CN115013215B - Multifunctional heating system for engineering machinery in alpine region and automatic control method thereof - Google Patents
Multifunctional heating system for engineering machinery in alpine region and automatic control method thereof Download PDFInfo
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- CN115013215B CN115013215B CN202210741624.3A CN202210741624A CN115013215B CN 115013215 B CN115013215 B CN 115013215B CN 202210741624 A CN202210741624 A CN 202210741624A CN 115013215 B CN115013215 B CN 115013215B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/001—Arrangements thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A multifunctional heating system for engineering machinery in alpine regions and an automatic control method thereof comprise a first oil tank, a second oil tank, a cooling liquid heater, a first oil tank heater, a hydraulic oil tank and a heater thereof, a storage battery and a heater thereof, an engine oil pan and a heater thereof, an engine air inlet electric heater, a cooling liquid diversion block, a main controller, various sensors, a relay, an electromagnetic reversing valve and the like. And the main controller controls the electromagnetic reversing valve, the relay and other electrical elements according to the input signals of the sensor. The invention solves the problems that the viscosity of hydraulic oil is reduced when the diesel engine is started in a severe cold area, the starting load of the engine is greatly increased, the engine is started in a cold state, the abrasion of a transmission part is aggravated, the service life of the engine is influenced, the capacity of a storage battery is reduced and the charging capacity is reduced in a low temperature state, the starting power is insufficient, and the like. Meanwhile, the operation cost of equipment in high and cold areas is greatly reduced, the attendance rate of the equipment is improved, the reliability is improved, and the like.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a multifunctional heating system for an engineering machinery in a alpine region and an automatic control method thereof.
Background
At present, when most engineering machinery works in high and cold areas, high-grade diesel oil is easy to be cured due to the influence of cold climate conditions; the viscosity of the hydraulic oil is reduced, so that the equipment starting load is greatly increased, and the engine is started in a cold state, so that the abrasion of a transmission part is increased, and the service life of the engine is influenced; the problems of insufficient starting power of the equipment and the like caused by the decrease of the capacity and the charging capability of the storage battery in a low-temperature state. In order to solve the starting problem of the diesel engine in the alpine region, low-grade diesel and some auxiliary starting devices are generally required to be selected. But the low-grade diesel oil has higher cost, so that the operation cost of equipment can be greatly increased. In some places or after the whole equipment is dragged into a greenhouse for preheating, the equipment is started, but because the engineering machinery is large in general size, the movement is difficult, the time is wasted, and a proper preheating space is not found well.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art and providing a multifunctional heating system for engineering machinery in alpine regions and an automatic control method thereof, wherein the multifunctional heating system has a simple structure and a good effect.
The invention is realized by the following technical scheme: the multifunctional heating system for the alpine region of the engineering machinery comprises a diesel tank, an engine, a cooling liquid heater, a hydraulic oil tank and a storage battery, wherein the diesel tank comprises a first oil tank added with high-grade diesel oil and a second oil tank added with low-grade diesel oil, the lower ends of the first oil tank and the second oil tank are communicated through ball valves, the oil outlet ends of the first oil tank and the second oil tank are connected with the engine through electromagnetic directional valves I, the oil return ends of the first oil tank and the second oil tank are connected with the engine through electromagnetic directional valves II, and the oil return end of the first oil tank is connected with a diesel radiator in parallel through the electromagnetic directional valves III; the engine is provided with a starting motor, an alternating current generator, an engine air inlet electric heater, an engine rotating speed sensor and an engine ECM;
the cooling liquid heater is connected with a cooling liquid loop of the engine, the cooling liquid heater is also connected with a cooling liquid diversion block, the cooling liquid diversion block is connected with a first oil tank heater, a hydraulic oil tank heater, an engine oil bottom shell heater and a storage battery heater, and an electromagnetic reversing valve IV, an electromagnetic reversing valve V, an electromagnetic reversing valve VI and an electromagnetic reversing valve VII are respectively arranged between liquid outlet ends of the first oil tank heater, the hydraulic oil tank heater, the engine oil bottom shell heater and the storage battery heater and the cooling liquid diversion block;
The intelligent engine cooling device is characterized by further comprising a main controller, a power switch, a key switch, a starting relay, a power-off delay relay, an engine ECM key electric relay and a cooling liquid heater relay, wherein the key switch is provided with a suction coil port, a B binding post, an ACC binding post, a BR binding post and a C binding post which are respectively connected with a storage battery anode, a power relay, a key electric signal input port of the main controller and an engine starting signal port, the input end of the main controller is connected with a first oil tank temperature sensor, a hydraulic oil tank temperature sensor, an engine air inlet temperature sensor, a cooling liquid temperature sensor, an engine oil temperature sensor, a storage battery temperature sensor, an environment temperature sensor, an engine rotating speed sensor, a BR binding post and a C binding post, and the output end of the main controller is connected with an electromagnetic reversing valve I, an electromagnetic reversing valve II, an electromagnetic reversing valve III, an electromagnetic reversing valve IV, an electromagnetic reversing valve V, an electromagnetic reversing valve VI, an electromagnetic reversing valve VII, a starting relay, a power-off delay relay, an engine ECM relay and an engine heating liquid heater electric heater; the main controller is provided with a constant electricity and key electric interface, and the power relay is connected with an ACC binding post of the key switch.
It is further: the detachable storage battery insulation sleeve is arranged outside the storage battery.
The electromagnetic directional valve IV, the electromagnetic directional valve V, the electromagnetic directional valve VI and the electromagnetic directional valve VII are electromagnetic directional valves integrated with the one-way valve.
The engine air inlet electric heater is a resistance heating type air inlet heater and is arranged at an inlet of an engine air inlet pipe.
The ambient temperature sensor is arranged at the bottom of the cab in a shade without heat source and direct sunlight.
The engine speed sensor is mounted near the rear end crankshaft of the engine.
The switching side of the power-off delay relay is connected with the suction coil of the power relay, and a diode is arranged between the power-off delay relay and the power relay.
An automatic control method of a multifunctional heating system for engineering machinery in alpine regions comprises an engine starting temperature protection control method and a power-off delay flameout control method, and specifically comprises the following steps:
engine start temperature protection control:
a1, turning off a key switch from off to on to power on, and starting a power-off delay relay and an engine ECM key electric relay;
A2, the power-on time is less than 2s, the starting relay is disconnected, and the starting of the engine is forbidden;
a3, monitoring the following temperature conditions: the temperature of the cooling liquid is less than or equal to 10 ℃, or the temperature of engine oil is less than or equal to minus 20 ℃, or the temperature of hydraulic oil is less than or equal to 0 ℃, or the temperature of diesel oil in a first oil tank is less than or equal to 5 ℃, or the temperature of engine air inlet is less than or equal to minus 20 ℃, or the temperature of a storage battery is less than or equal to minus 20 ℃, and the engine state monitoring step is carried out when all the above conditions are not met; when any one of the items is satisfied, the electromagnetic directional valve I and the electromagnetic directional valve II are electrified and opened, and the main controller controls the relay of the cooling liquid heater to be closed, so that the cooling liquid heater starts to work; simultaneously, the main controller starts an air inlet electric heater of the engine to heat the air inlet temperature for 20s;
A4, after the cooling liquid heater is started in the step A3, outputting an instruction by the main controller to start the electromagnetic directional valve V, the electromagnetic directional valve VI and the electromagnetic directional valve VII, wherein the monitored temperature meets the following starting requirements: the engine state monitoring step is carried out again when the temperature of the cooling liquid is more than 10 ℃, the temperature of engine oil is more than 0 ℃, the temperature of hydraulic oil is more than 0 ℃ and the temperature of the storage battery is more than 0 ℃, otherwise, the step A3 is returned to;
A5, the engine speed is 0rpm, and the next step is carried out; otherwise, the starting relay is forbidden to start, so that the starting gear is prevented from tooth punching;
A6, starting a key switch when the engine is longer than 15s from the last starting interval time; otherwise, the starting relay is prohibited from starting, so that the frequent starting overheat burning loss of the starting motor is prevented;
A7, after the key switch is started, the engine speed is not 0rpm after 2 seconds, and the next step is carried out; otherwise, the starting relay is prohibited from starting, the starting motor is powered on and then has adhesive top teeth, the phenomenon that the engine has no rotating speed is shown, and the starting motor needs to be quickly disconnected;
A8, starting the key switch for less than 15 seconds, and starting the relay; otherwise, the starting relay is stopped to start, the starting time is not too long, and the coil is prevented from being overheated and burnt;
A9, when the engine speed is greater than 450rpm, the starting is considered to be successful, and the starting relay is disconnected; otherwise, returning to the step A7;
And (3) power-off delay flameout control:
B1, after the key switch is powered off, judging according to signals detected by an engine rotation speed sensor, if no rotation speed of the engine is detected, directly closing an engine ECM key electric relay and a power-off delay relay; if the engine is detected to be in an operating state, the engine ECM key electric relay and the power-off delay relay still remain in a closed state;
B2, if the rotating speed of the engine is always less than or equal to 3 gears after the engine is started, and the engine is kept at more than 60s in a time less than 3 gears after the key switch is powered off, the main controller controls the electromagnetic directional valve I to be closed, the electromagnetic directional valve II is kept to be disconnected, the diesel oil suction port of the engine is switched to the second oil tank, the diesel oil return path of the engine is kept to be returned to the first oil tank and the key relay of the engine ECM is closed after the key switch is operated for 60 s;
If the engine speed is greater than 3, after the engine enters a delayed flameout, after the engine speed is reduced to a low idle speed within 10 seconds, the main controller controls the electromagnetic directional valve I to be closed, the electromagnetic directional valve II is kept to be disconnected, the engine diesel oil suction port is switched to the second oil tank, the engine diesel oil return path is continuously maintained to return to the first oil tank and the engine ECM key electric relay is closed after the engine diesel oil return path runs for 60 seconds;
and B4, the disconnection time of the engine ECM key electric relay is more than or equal to 10s or the engine is not started after the engine is started, and the power-off delay relay is disconnected.
Also comprises a control method for automatically switching the high-grade diesel oil road and the low-grade diesel oil road during the startup and shutdown, which comprises the following steps,
When the engine is started, the engine starting protection step A3 is connected, the electromagnetic directional valve I and the electromagnetic directional valve II are electrified and started, and after the cooling liquid heater is started, the electromagnetic directional valve IV is started at the same time, and the high-grade diesel oil of the first oil tank is heated; after the high-grade diesel oil is heated to more than 5 ℃, the main controller controls the electromagnetic directional valve I and the electromagnetic directional valve II to be disconnected, and the cooling liquid heater is automatically closed after the high-grade diesel oil is switched back to the first oil tank;
And C2, when the equipment is shut down, a power-off delay flameout control program step B1 is connected, after the main controller firstly adjusts the engine to a proper rotating speed according to the rotating speed information of the engine, if the rotating speed is less than or equal to 3 grades or low idle speed, the main controller controls the electromagnetic directional valve I to be closed, the electromagnetic directional valve II is kept to be opened, the engine diesel oil suction port is switched to the second oil tank, the engine diesel oil return path is kept to return to the first oil tank and is closed after the engine ECM key electric relay is operated for 60 seconds, the whole process enables the engine diesel oil pipeline to be full of low-grade diesel oil, and the high-grade diesel oil is prevented from waxing, and the equipment starting and attendance rate are affected.
The automatic switching control method of the diesel radiator oil return path in the low-temperature environment is also included, the specific method is as follows,
In the engine starting protection step A2, when the ambient temperature is less than or equal to 0 ℃ after power-on, the electromagnetic directional valve III is electrified and opened, and diesel oil does not pass through the diesel radiator; on the contrary, the electromagnetic reversing valve III is powered off and closed, and diesel oil passes through the diesel radiator.
The invention has the following advantages:
1. According to the invention, the automatic control of equipment start protection in alpine regions is realized by simple heating pipelines, electrical elements and a main controller at lower cost, the damage of a start motor caused by manual misoperation is reduced, and the attendance rate of the equipment can be greatly improved;
2. According to the invention, through automatic control of the temperature of the hydraulic oil, the viscosity of the hydraulic oil is reduced, and the starting load of an engine and the abrasion of related hydraulic transmission parts in the initial stage of equipment starting are greatly reduced. The durable reliability of parts is improved, and the electric energy consumption of the starting motor is effectively reduced;
3. the engine oil temperature and the cooling liquid temperature are automatically controlled, so that the starting difficulty of the engine at low temperature caused by the increase of the viscosity of the engine oil and the resistance of the engine transmission part is effectively overcome, the abrasion of the engine power transmission part in a cold state is reduced, and the service life of the engine is prolonged. The electric energy consumption of the starting motor is effectively reduced;
4. the capacity of the storage battery is only about 40% of the rated capacity under the environment of-20 ℃. The invention effectively improves the problem of insufficient power of the starting motor caused by the capacity reduction and the charging capacity reduction of the storage battery in a low-temperature state through the heating system of the storage battery and the automatic control program thereof;
5. According to the invention, through the automatic switching function of the high-grade diesel oil and the low-grade diesel oil, the high-grade diesel oil can be used in winter, the operation cost can be reduced by more than 10%, and an engine delay flameout automatic control program is arranged after the key switch of the equipment is closed, so that the engine diesel oil circuit is automatically filled with the low-grade diesel oil, the manual switching is not needed, and the risk of wax deposition caused by the fact that the high-grade diesel oil remains in the diesel oil circuit due to human error factors is greatly reduced;
6. According to the invention, the starting protection control program of the starting motor is perfected by monitoring the rotating speed of the engine, so that the risks of tooth beating and coil overheating burning loss of the starting motor are effectively reduced;
7. the invention increases the delay power-off function of the equipment. After the engine is flamed out, the flywheel can continue to rotate, and the generator can still generate electricity, so that the generator can be effectively protected;
8. According to the invention, the opening and closing of the electromagnetic reversing valve at the inlet of the diesel radiator are automatically controlled by the main controller through monitoring the environmental temperature. When the ambient temperature is low, the temperature of diesel oil flowing can be effectively increased, the flowing resistance of the diesel oil can be reduced, and the power of a plurality of cooling fans can be indirectly saved.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a schematic diagram of the electrical principle of the present invention;
fig. 3 and4 are logic diagrams of the control method of the present invention.
In the figure: 1. a first oil tank, 2, a second oil tank, 3, a coolant heater, 4, a hydraulic oil tank, 5, a storage battery, 6, a first oil tank temperature sensor, 7, a hydraulic oil tank temperature sensor, 8, an engine intake air temperature sensor, 9, a coolant temperature sensor, 10, an engine oil temperature sensor, 11, a storage battery temperature sensor, 12, an ambient temperature sensor, 13, an electromagnetic directional valve I, 14, an electromagnetic directional valve II, 15, an electromagnetic directional valve III, 16, an electromagnetic directional valve IV, 17, an electromagnetic directional valve V, 18, an electromagnetic directional valve VI, 19, an electromagnetic directional valve VII, 20, a ball valve, 21, first tank heater, 22, hydraulic tank heater, 23, engine sump heater, 24, battery heater, 25, engine intake electric heater, 26, starter motor, 27, alternator, 28, diesel radiator, 29, battery thermal sleeve, 30, coolant diverter block, 31, engine speed sensor, 32, engine ECM,33, master controller, 34, power switch, 35, key switch, 36, starter relay, 37, power relay, 38, diode, 39, power-off delay relay, 40, engine ECM key relay, 41, coolant heater relay.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are for illustration and explanation of the present invention, and are not intended to limit the present invention.
The multifunctional heating system for the engineering machinery in the alpine region comprises a diesel tank, an engine, a cooling liquid heater 3, a hydraulic oil tank 4 and a storage battery 5, wherein the diesel tank comprises a first oil tank 1 added with high-grade diesel oil and a second oil tank 2 added with low-grade diesel oil, the lower ends of the first oil tank 1 and the second oil tank 2 are communicated through ball valves, the oil outlet ends of the first oil tank 1 and the second oil tank 2 are connected with the engine through an electromagnetic directional valve I13, the oil return ends of the first oil tank 1 and the second oil tank 2 are connected with the engine through an electromagnetic directional valve II 14, and the oil return end of the first oil tank 1 is connected with a diesel oil radiator 28 in parallel through an electromagnetic directional valve III 15; the engine is provided with a starting motor 26, an alternating current generator 27, an engine air inlet electric heater 25, an engine rotating speed sensor 31 and an engine ECM32;
According to the multifunctional heating system for the engineering machinery in the alpine region, the bottoms of the first oil tank and the second oil tank are communicated and provided with the manual ball valves, the manual ball valves are closed when the air temperature is low, the high-low grade diesel oil is isolated, the manual ball valves are opened when the air temperature is high, the effective volume of the diesel oil tank assembly can be increased by adding the high grade diesel oil on the second oil tank, and the oiling period can be prolonged under certain environmental temperature conditions; the cooling liquid heater and the diesel oil supply loop of the engine are connected with the first oil tank and the second oil tank through the electromagnetic reversing valve I13 and the electromagnetic reversing valve II 14, and the main controller controls and switches the engine oil suction path and the engine oil return path according to the temperature information input by the first oil tank temperature sensor; the internal diesel oil electronic oil suction pump, the combustion-supporting wind wheel, the electric spark plug, the water pump and the work indicator lamp are automatically controlled after the relay of the cooling liquid heater is electrified by the electric signal sent by the main controller;
The electromagnetic directional valve III 15 is added at the inlet of the diesel radiator on the diesel system loop, the temperature information fed back to the main controller by the ambient temperature sensor automatically controls the on-off of the electromagnetic directional valve to switch the oil way, when the ambient temperature is low, the flow resistance can be reduced by effectively improving the temperature of diesel during the flow, and the power of a cooling fan can be indirectly saved.
The multifunctional heating system for engineering machinery in alpine regions is shown in fig. 1-2, wherein the cooling liquid heater 3 is connected with a cooling liquid loop of an engine, the cooling liquid heater 3 is also connected with a cooling liquid split block 30, the cooling liquid split block 30 is connected with a first oil tank heater 21, a hydraulic oil tank heater 22, an engine oil bottom shell heater 23 and a storage battery heater 24, and electromagnetic directional valves IV 16, V17, VI 18 and VII 19 are respectively arranged between the liquid outlet ends of the first oil tank heater 21, the hydraulic oil tank heater 22, the engine oil bottom shell heater 23 and the storage battery heater 24 and the cooling liquid split block 30; the cooling liquid loop of the cooling liquid heater is connected with cooling liquid in the engine to form a loop, a cooling liquid split block is arranged at a hot water outlet of the cooling liquid heater and is connected with each heater functional module, and the heated cooling liquid is provided for each functional module to perform heat exchange so as to achieve the aim of preheating related liquid media; the temperature sensor is arranged at a proper position on each functional module to monitor the temperature, and the main controller controls the opening and closing of the cooling liquid heater and the on-off of the electromagnetic reversing valve of each heater loop according to signals input by the sensor, so that the related media obtain the temperature suitable for starting the equipment.
The heater on the first oil tank is arranged at a position close to the oil suction port, so that low-viscosity heated diesel oil can be sucked conveniently. The temperature sensor is arranged at a proper position away from the oil suction port and the heater, the temperature sensor is too close to be beneficial to the rising of the temperature of diesel oil in the whole first oil tank, and the excessive heating is too far to waste combustion energy. And the main controller controls the electromagnetic reversing valve IV to open and close the heating loop according to the temperature information fed back by the first oil tank temperature sensor.
The heater on the hydraulic oil tank is arranged at a position close to the oil pumping port of the working pump, so that the working pump can conveniently pump the hydraulic oil with reduced viscosity after heating. The temperature sensor of the hydraulic oil tank is arranged at a proper position away from the oil suction port and the heater, and the temperature sensor is too close to be beneficial to the increase of the overall temperature in the whole hydraulic oil tank, and too far is excessively heated to waste combustion energy. And the main controller controls the electromagnetic reversing valve V to open and close the heating loop according to temperature information fed back by the hydraulic oil tank temperature sensor.
The engine oil pan heater of the present invention is mounted at a position closer to the oil pumping pan to facilitate pumping of engine oil having a reduced viscosity after heating by the working pump. The engine oil temperature sensor is arranged at a proper position away from the oil suction port and the heater, and the engine oil temperature sensor is too close to be beneficial to the increase of the overall temperature in the whole engine oil pan, and too far is excessively heated to waste combustion energy. And the main controller controls the electromagnetic reversing valve VI to open and close the heating loop according to the temperature information fed back by the engine oil temperature sensor.
The multifunctional heating system for the alpine region for engineering machinery as shown in fig. 2 further comprises a main controller 33, a power switch 34, a key switch 35, a starting relay 36, a power relay 37, a power-off delay relay 39, an engine ECM key electric relay 40 and a coolant heater relay 41, wherein the key switch 35 is provided with a B binding post, an ACC binding post, a BR binding post and a C binding post which are respectively connected with a storage battery anode, an absorption coil port of the power relay, a key electric signal input port of the main controller and an engine starting signal port, and the input end of the main controller 33 is connected with a first oil tank temperature sensor 6, The hydraulic oil tank temperature sensor 7, the engine air inlet temperature sensor 8, the cooling liquid temperature sensor 9, the engine oil temperature sensor 10, the storage battery temperature sensor 11, the environment temperature sensor 12, the engine rotating speed sensor 31, the BR binding post and the C binding post, wherein the output end of the main controller 33 is connected with an electromagnetic directional valve I13, an electromagnetic directional valve II 14, an electromagnetic directional valve III 15, an electromagnetic directional valve IV 16, an electromagnetic directional valve V17, an electromagnetic directional valve VI 18, an electromagnetic directional valve VII 19, a starting relay 36, a power-off delay relay 39, an engine ECM key electric relay 40, a cooling liquid heater relay 41 and an engine air inlet electric heater 25; The main controller 33 is provided with a normal electricity and key electric interface, and the power relay 37 is connected with an ACC terminal of the key switch 35. The key switch is provided with three gears of 0 (off), I (on) and II (start), and four binding posts are respectively connected with a storage battery anode (B), an adsorption coil port (ACC) of a power relay, a key electric signal input port (BR) of a main controller and an engine start signal port (R); one end of the power relay on-off side is connected with the positive electrode of the storage battery, and the other end of the power relay on-off side is connected with the key electric port of the main controller; one end of the suction coil side is connected with a key switch binding post (ACC), and the other end is grounded; Controlling the on-off of key electricity of the whole electrical system of the equipment; one end of the starting relay switch side is connected with a key power supply, and the other end of the starting relay switch side is connected with a starting motor body relay; one end of the suction coil side is connected with an output port of the main controller for receiving a key switch starting signal, and the other end of the suction coil side is grounded. After receiving the engine starting signal sent by the main controller, the suction coil is electrified, so that the starting motor starts to work after the relay of the starting motor body is connected. One end of the switch side of the power-off delay relay is connected with the key power, and the other end of the switch side of the power-off delay relay is connected with the diode and then is connected with the attraction coil of the power relay; one end of the suction coil side is connected with the output port of the power-off delay relay of the main controller, and the other end is grounded. one end of the switch side of the engine ECM key electric relay is connected with the key electricity, and the other end of the switch side is connected with the engine ECM power port; one end of the suction coil side is connected with an output port of an engine ECM power relay of the main controller, and the other end of the suction coil side is grounded; one end of the relay switch side of the coolant heater is connected with the positive electrode of the storage battery, and the other end of the relay switch side of the coolant heater body is provided with a power supply control relay; one end of the suction coil side is connected with the output port of the cooling liquid heater relay of the main controller, and the other end is grounded; controlling the opening and closing of the cooling liquid heater; all temperature and rotation speed input ports on the main controller are low-level input and are uniformly grounded; the related electromagnetic reversing valves are high-level output and are respectively grounded; The main controller port is separately connected with an engine ECM intake air heating control port.
When the key switch is turned from off to on, the power supply relay, the power-off delay relay and the engine ECM key electric relay are electrified, the power supply relay provides power for the whole vehicle, and the engine ECM key electric relay provides key electricity for the engine ECM. When the key switch is turned from on to off, the key switch is detected to be turned off by the output port of the engine ECM key electric relay on the main controller, and according to the change of the engine rotating speed, the main controller can delay to cut off the power supply of the engine ECM controller through the engine ECM key electric relay, and the engine is flameout after running for a period of time in a low-speed state. Because after flameout, the engine can continue to rotate due to inertia of the flywheel, the generator still can generate electricity, in order to protect the generator, the power relay needs to be powered off in a delayed mode, the power relay can continue to supply power to the power relay attraction coil, and at the moment, some key electric related electric device elements can be turned off in a delayed mode.
The multifunctional heating system for the engineering machinery in the alpine region is shown in fig. 1, and a detachable storage battery insulation sleeve 29 is arranged outside the storage battery 5. The temperature of electrolyte is maintained by the detachable insulating layer, the battery is installed in winter and disassembled in summer, in addition, the temperature sensor of the battery is installed in the electrolyte of the battery, the heater is tightly attached to and spirally sleeved on the shell of the battery, and the main controller controls the electromagnetic reversing valve VII to open and close the heating loop according to the temperature information fed back by the temperature sensor of the battery.
The multifunctional heating system for the engineering machinery in the alpine region is shown in fig. 1, and the electromagnetic directional valve IV 16, the electromagnetic directional valve V17, the electromagnetic directional valve VI 18 and the electromagnetic directional valve VII 19 are electromagnetic directional valves integrated with one-way valves, so that the cooling liquid is prevented from flowing backwards.
The multifunctional heating system for the engineering machinery in the alpine region is shown in fig. 1, the engine air inlet electric heater 25 is a resistance heating type air inlet heater, and the engine air inlet electric heater 25 is arranged at the inlet of an engine air inlet pipe. A resistance heating type air inlet heater is arranged at the inlet of an engine air inlet pipe, and the on-off and heating time of the heater are automatically controlled by an engine ECM according to signals input by an air inlet temperature sensor.
The multifunctional heating system for engineering machinery in alpine regions is shown in fig. 1, and the environmental temperature sensor 12 is arranged at a shade position without heat source and direct sunlight at the bottom of a cab, so that the effectiveness of temperature parameters is prevented from being influenced.
The engine speed sensor 31 is installed near the rear end crankshaft of the engine to monitor the engine speed, as shown in fig. 1, of a multifunctional heating system for construction machinery in alpine regions.
The multifunctional heating system for engineering machinery in alpine regions is shown in fig. 1, wherein the switch side of the power-off delay relay 39 is connected with the suction coil of the power relay 37, and a diode 38 is arranged between the power-off delay relay 39 and the power relay 37.
The automatic control method of the multifunctional heating system for the alpine region for the engineering machinery as shown in fig. 3 to 4 comprises an engine starting temperature protection control method and a power-off delay flameout control method, and specifically comprises the following steps:
engine start temperature protection control:
A1, the key switch 35 is turned from off to on to power on, and the power-off delay relay 39 and the engine ECM key electric relay 40 are opened;
A2, the power-on time is less than 2s, the starting relay 36 is disconnected, and the starting of the engine is forbidden;
A3, monitoring the following temperature conditions: the temperature of the cooling liquid is less than or equal to 10 ℃, or the temperature of engine oil is less than or equal to minus 20 ℃, or the temperature of hydraulic oil is less than or equal to 0 ℃, or the temperature of diesel oil in a first oil tank is less than or equal to 5 ℃, or the temperature of engine air inlet is less than or equal to minus 20 ℃, or the temperature of a storage battery is less than or equal to minus 20 ℃, and the engine state monitoring step is carried out when all the above conditions are not met; when any one of the above conditions is met, the electromagnetic directional valve I13 and the electromagnetic directional valve II 14 are electrified and opened, and the main controller 33 controls the relay 41 of the coolant heater to be closed, so that the coolant heater 3 starts to work; simultaneously, the main controller 33 turns on the engine air inlet electric heater 25 to heat the air inlet temperature for 20s;
A4, after the cooling liquid heater 3 is started in the step A3, the main controller 33 outputs instructions to start the electromagnetic directional valve V17, the electromagnetic directional valve VI 18 and the electromagnetic directional valve VII 19, and the monitored temperature meets the following starting requirements: the engine state monitoring step is carried out again when the temperature of the cooling liquid is more than 10 ℃, the temperature of engine oil is more than 0 ℃, the temperature of hydraulic oil is more than 0 ℃ and the temperature of the storage battery is more than 0 ℃, otherwise, the step A3 is returned to;
a5, the engine speed is 0rpm, and the next step is carried out; otherwise, the start relay 36 is prohibited from being started, and the starting gear is prevented from being toothed;
A6, starting the key switch 35 when the engine is longer than 15s from the last starting interval time; otherwise, the starting relay 36 is prohibited from starting, so that the frequent starting overheat burning loss of the starting motor is prevented;
A7, after the key switch 35 is started, the engine speed is not 0rpm after 2 seconds, and the next step is carried out; otherwise, the starting relay 36 is prohibited from being started, and the starting motor is powered on to generate adhesive top teeth, which is shown by no rotating speed of the engine and needs to be quickly disconnected;
A8, starting time of the key switch 35 is less than 15s, and starting the relay 36; on the contrary, the starting relay 36 is stopped to be started, the starting time is not too long, and the coil is prevented from being overheated and burnt;
A9, when the engine speed is greater than 450rpm, the starting is considered to be successful, and the starting relay is disconnected; otherwise, returning to the step A7;
And (3) power-off delay flameout control:
B1, after the key switch 35 is powered off, judging according to signals detected by the engine speed sensor 31, if no engine speed is detected, directly closing the engine ECM key electric relay 40 and the power-off delay relay 39; if the engine is detected to be in an operating state, the engine ECM key electric relay 40 and the power-off delay relay 39 remain in a closed state;
B2, if the rotating speed is always less than or equal to 3 gears after the engine is started, and the engine is kept at more than 60s in a time less than 3 gears after the key switch 35 is powered off, the main controller 33 controls the electromagnetic directional valve I13 to be closed, the electromagnetic directional valve II 14 is kept to be opened, the engine diesel oil suction port is switched to the second oil tank 2, and the engine ECM key electric relay 40 is closed after the engine diesel oil return path is continuously maintained to return to the first oil tank 1 and runs for 60 s;
If the engine speed is greater than 3, after the time delay flameout is carried out, the main controller 33 controls the electromagnetic directional valve I13 to be closed after the engine speed is reduced to low idle speed within 10 seconds, the electromagnetic directional valve II 14 is kept to be disconnected, the engine diesel oil suction port is switched to the second oil tank 2, the engine diesel oil return path is continuously maintained to return to the first oil tank 1, and the engine ECM key electric relay 40 is closed after the engine is operated for 60 seconds;
B4, the disconnection time of the engine ECM key electric relay 40 is more than or equal to 10 seconds or the engine is not started after the engine is started, and the power-off delay relay 39 is disconnected.
The high-low grade diesel oil way is automatically switched and controlled when the machine is started and shut down,
When the engine is started, the engine starting protection step A3 is connected, the electromagnetic directional valve I13 and the electromagnetic directional valve II 14 are electrified and started, and after the cooling liquid heater 3 is started, the electromagnetic directional valve IV 16 is started at the same time, and the high-grade diesel oil of the first oil tank 1 is heated; after the high-grade diesel oil is heated to more than 5 ℃, the main controller 33 controls the electromagnetic directional valve I13 and the electromagnetic directional valve II 14 to be disconnected, and the cooling liquid heater 3 is automatically closed after the high-grade diesel oil is switched back to the high-grade diesel oil circuit of the first oil tank 1;
And C2, when the equipment is shut down, the step B1 of a power-off delay flameout control program is connected, the main controller 33 firstly adjusts the engine to a proper rotating speed according to the rotating speed information of the engine, if the rotating speed is less than or equal to 3 or the low idle speed, the main controller 33 controls the electromagnetic directional valve I13 to be closed, the electromagnetic directional valve II 14 is kept to be opened, the engine diesel oil suction port is switched to the second oil tank 2, the engine diesel oil return path is continuously maintained to return to the first oil tank 1 and is operated for 60 seconds, and then the engine ECM key relay 40 is closed, so that the engine diesel oil pipeline is filled with low-grade diesel oil in the whole process, and the high-grade diesel oil waxing is prevented, and the equipment starting and the attendance rate are influenced.
The automatic switching control of the oil return path of the diesel radiator in a low-temperature environment,
In the engine starting protection step A2, when the ambient temperature is less than or equal to 0 ℃ after power-on, the electromagnetic directional valve III 15 is powered on, and diesel oil does not pass through the diesel oil radiator; otherwise, the electromagnetic directional valve III 15 is powered off, and diesel oil passes through the diesel radiator.
According to the multifunctional heating system for the engineering machinery in the alpine region and the automatic control method thereof, the temperature of the hydraulic oil tank, the temperature of the cooling liquid, the temperature of engine oil and the temperature of the storage battery which are acquired by the temperature sensor are input to the main controller; the main controller automatically controls the opening and closing of the relay of the cooling liquid heater based on the data state, and simultaneously controls the opening and closing of the electromagnetic reversing valve of the cooling liquid loop of the heater of each functional module; automatically turning off the coolant heater after the relevant liquid medium obtains a temperature suitable for starting the equipment; the on-off and heating time of the heater are automatically controlled by an engine ECM through signals input by a temperature sensor at an engine intake manifold; the environmental temperature information is input to the main controller through the environmental temperature sensor, and the main controller automatically controls the on-off of the electromagnetic reversing valve to open and close the inlet of the diesel radiator; the main controller judges whether the set starting protection conditions are met or not and then starts the equipment by monitoring the engine speed, the engine coolant temperature, the hydraulic oil temperature, the storage battery temperature, the engine oil temperature and the engine air inlet temperature, and a detailed starting motor starting protection program is set; the power-off delay relay is controlled by the main controller by monitoring the temperature of the first oil tank. When the equipment is started, the oil inlet and return paths of the first oil tank and the second oil tank are automatically switched according to actual conditions, and after the key switch of the equipment is closed, an engine delay flameout program is arranged to automatically switch the oil paths again; the delayed power-off program is set through the power-off delay relay, the whole vehicle power relay and the engine ECM power relay.
Finally, it should be noted that: the foregoing description is only a preferred example of the present invention and is not intended to limit the present invention, but although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An automatic control method of a multifunctional heating system for engineering machinery in alpine regions is characterized by comprising the following steps of: the diesel oil tank comprises a first diesel oil tank (1) for adding high-grade diesel oil and a second diesel oil tank (2) for adding low-grade diesel oil, wherein the lower ends of the first diesel oil tank (1) and the second diesel oil tank (2) are communicated through ball valves, the oil outlet ends of the first diesel oil tank (1) and the second diesel oil tank (2) are connected with the engine through electromagnetic reversing valves I (13), the oil return ends of the first diesel oil tank (1) and the second diesel oil tank (2) are connected with the engine through electromagnetic reversing valves II (14), and the diesel oil radiator (28) is connected in parallel with the oil return end of the first diesel oil tank (1) through electromagnetic reversing valves III (15); the engine is provided with a starting motor (26), an alternating current generator (27), an engine air inlet electric heater (25), an engine rotating speed sensor (31) and an engine ECM (32);
The cooling liquid heater (3) is connected with a cooling liquid loop of the engine, the cooling liquid heater (3) is also connected with a cooling liquid diversion block (30), the cooling liquid diversion block (30) is connected with a first oil tank heater (21), a hydraulic oil tank heater (22), an engine oil bottom shell heater (23) and a storage battery heater (24), and an electromagnetic reversing valve IV (16), an electromagnetic reversing valve V (17), an electromagnetic reversing valve VI (18) and an electromagnetic reversing valve VII (19) are respectively arranged between the liquid outlet ends of the first oil tank heater (21), the hydraulic oil tank heater (22), the engine oil bottom shell heater (23) and the storage battery heater (24) and the cooling liquid diversion block (30);
Still include master controller (33), switch (34), key switch (35), start relay (36), power relay (37), outage time delay relay (39), engine ECM key electric relay (40) and coolant heater relay (41), be equipped with on key switch (35) and connect battery positive pole, power relay's actuation coil port, master controller key electrical signal input port and engine start signal port's B terminal, ACC terminal, BR terminal and C terminal respectively, the input of master controller (33) is connected with first oil tank temperature sensor (6), hydraulic tank temperature sensor (7), engine air intake temperature sensor (8), coolant temperature sensor (9), engine oil temperature sensor (10), battery temperature sensor (11), environment temperature sensor (12), engine speed sensor (31), BR terminal and C terminal, the output of master controller (33) is connected with solenoid valve I (13), solenoid valve II (14), solenoid valve III (16), solenoid valve IV (17), solenoid valve VI (17), the relay of ECM (18), the outage time delay relay (39), the solenoid valve of switching-over (40) is electronic change-over (19) switch-over valve (40) A coolant heater relay (41) and an engine intake electric heater (25); the main controller (33) is provided with a constant electricity and key electric interface, and the power relay (37) is connected with an ACC binding post of the key switch (35);
the method comprises an engine starting temperature protection control method and a power-off delay flameout control method, and specifically comprises the following steps:
engine start temperature protection control:
a1, turning on a key switch (35) from off to on, and turning on a power-off delay relay (39) and an engine ECM key electric relay (40);
a2, the power-on time is less than 2s, a starting relay (36) is disconnected, and the starting of the engine is forbidden;
A3, monitoring the following temperature conditions: the temperature of the cooling liquid is less than or equal to 10 ℃, or the temperature of engine oil is less than or equal to minus 20 ℃, or the temperature of hydraulic oil is less than or equal to 0 ℃, or the temperature of diesel oil in a first oil tank is less than or equal to 5 ℃, or the temperature of engine air inlet is less than or equal to minus 20 ℃, or the temperature of a storage battery is less than or equal to minus 20 ℃, and the engine state monitoring step is carried out when all the above conditions are not met; when any one of the items is satisfied, the electromagnetic directional valve I (13) and the electromagnetic directional valve II (14) are electrified and opened, and the main controller (33) controls the relay (41) of the cooling liquid heater to be closed, so that the cooling liquid heater (3) starts to work; simultaneously, a main controller (33) turns on an engine air inlet electric heater (25) to heat the air inlet temperature for 20s;
A4, after the cooling liquid heater (3) is started in the step A3, a main controller (33) outputs instructions to start an electromagnetic directional valve V (17), an electromagnetic directional valve VI (18) and an electromagnetic directional valve VII (19), and the temperature to be monitored meets the following starting requirements: the engine state monitoring step is carried out again when the temperature of the cooling liquid is more than 10 ℃, the temperature of engine oil is more than 0 ℃, the temperature of hydraulic oil is more than 0 ℃ and the temperature of the storage battery is more than 0 ℃, otherwise, the step A3 is returned to;
A5, the engine speed is 0rpm, and the next step is carried out; otherwise, the starting relay (36) is forbidden to start, so that the starting gear is prevented from being toothed;
A6, starting a key switch (35) when the engine is longer than 15s from the last starting interval time; otherwise, the starting relay (36) is prohibited from starting, so that the frequent starting of the starting motor is prevented from overheating and burning;
A7, after the key switch (35) is started, the engine speed is not 0rpm after 2 seconds, and the next step is carried out; otherwise, the starting relay (36) is prohibited from starting, the starting motor is powered on, and then the adhesive top teeth appear, which is shown that the engine has no rotating speed and needs to be quickly disconnected;
a8, the starting time of the key switch (35) is less than 15s, and the starting relay (36) is started; otherwise, the starting relay (36) is stopped to start, the starting time is not too long, and the coil is prevented from overheating and burning;
A9, when the engine speed is greater than 450rpm, the starting is considered to be successful, and the starting relay is disconnected; otherwise, returning to the step A7;
And (3) power-off delay flameout control:
B1, after the key switch (35) is powered off, judging according to the signal detected by the engine speed sensor (31), if no rotating speed of the engine is detected, directly closing an engine ECM key electric relay (40) and a power-off delay relay (39); if the engine is detected to be in an operating state, the engine ECM key electric relay (40) and the power-off delay relay (39) are still kept in a closed state;
B2, if the rotating speed is always less than or equal to 3 gears after the engine is started, and the engine is kept at more than 60 seconds in a time less than 3 gears after the key switch (35) is powered off, the main controller (33) controls the electromagnetic directional valve I (13) to be closed, the electromagnetic directional valve II (14) is kept to be opened, the engine diesel oil suction port is switched to the second oil tank (2), the engine diesel oil return path is continuously maintained to return to the first oil tank (1) and is closed after the engine ECM key electric relay (40) is operated for 60 seconds;
If the engine speed is more than 3, after the time delay flameout is carried out, the engine speed is reduced to low idle speed within 10 seconds, the main controller (33) controls the electromagnetic directional valve I (13) to be closed, the electromagnetic directional valve II (14) is kept to be disconnected, the engine diesel oil suction port is switched to the second oil tank (2), the engine diesel oil return path is continuously maintained to return to the first oil tank (1) and is operated for 60 seconds, and then the engine ECM key electric relay (40) is closed;
and B4, the disconnection time of the engine ECM key electric relay (40) is more than or equal to 10s or the engine is not started after the engine is started, and the power-off delay relay (39) is disconnected.
2. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: a detachable battery thermal insulation sleeve (29) is arranged outside the battery (5).
3. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: the electromagnetic directional valve IV (16), the electromagnetic directional valve V (17), the electromagnetic directional valve VI (18) and the electromagnetic directional valve VII (19) are electromagnetic directional valves integrated with one-way valves.
4. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: the engine air inlet electric heater (25) is a resistance heating type air inlet heater, and the engine air inlet electric heater (25) is arranged at the inlet of an engine air inlet pipe.
5. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: the ambient temperature sensor (12) is installed in a shade where no heat source and no direct sunlight are present at the bottom of the cab.
6. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: the engine speed sensor (31) is mounted near the rear end crankshaft of the engine.
7. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: the switching side of the power-off delay relay (39) is connected with the attraction coil of the power relay (37), and a diode (38) is arranged between the power-off delay relay (39) and the power relay (37).
8. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: also comprises a control method for automatically switching the high-grade diesel oil road and the low-grade diesel oil road during the startup and shutdown, which comprises the following steps,
When the engine is started, the engine starting protection step A3 is connected, the electromagnetic directional valve I (13) and the electromagnetic directional valve II (14) are electrified and opened, and after the cooling liquid heater (3) is started, the electromagnetic directional valve IV (16) is simultaneously opened to heat the high-grade diesel oil of the first oil tank (1); after the high-grade diesel oil is heated to more than 5 ℃, the main controller (33) controls the electromagnetic directional valve I (13) and the electromagnetic directional valve II (14) to be disconnected, and the cooling liquid heater (3) is automatically closed after the high-grade diesel oil is switched back to the first oil tank (1);
And C2, when the equipment is shut down, the power-off delay flameout control program step B1 is connected, the main controller (33) firstly adjusts the engine to a proper rotating speed according to the rotating speed information of the engine, if the rotating speed is less than or equal to 3 grades or low idle speed, the main controller (33) controls the electromagnetic directional valve I (13) to be closed, the electromagnetic directional valve II (14) is kept to be disconnected, the engine diesel oil suction port is switched to the second oil tank (2), the engine diesel oil return path is continuously maintained to return to the first oil tank (1) and is closed after the engine diesel oil return path runs for 60 seconds, and the engine ECM key electric relay (40) is closed, so that the engine diesel oil pipeline is full of low-grade diesel oil in the whole process, and the high-grade diesel oil waxing is prevented, and the equipment starting and the attendance rate are influenced.
9. The automatic control method of the multifunctional heating system for the engineering machinery in the alpine region of claim 1, which is characterized in that: the automatic switching control method of the diesel radiator oil return path in the low-temperature environment is also included, the specific method is as follows,
In the engine starting protection step A2, when the ambient temperature is less than or equal to 0 ℃ after power-on, the electromagnetic directional valve III (15) is electrified and opened, and diesel oil does not pass through the diesel oil radiator; on the contrary, the electromagnetic directional valve III (15) is powered off and closed, and diesel oil passes through the diesel oil radiator.
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| CN209100148U (en) * | 2018-10-17 | 2019-07-12 | 徐州徐工挖掘机械有限公司 | A kind of high revolving speed flame-out protection device of engine |
| CN110700974A (en) * | 2019-11-21 | 2020-01-17 | 鲁东大学 | Vehicle oil tank control system |
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| JP3074512B2 (en) * | 1994-07-12 | 2000-08-07 | 株式会社クボタ | Diesel engine start-up device |
| JP2008128156A (en) * | 2006-11-24 | 2008-06-05 | Toyota Motor Corp | Engine start control device |
| RU2382230C2 (en) * | 2007-12-19 | 2010-02-20 | ООО "Объединение Родина" | Electronically controlled electric torch device and method of diesel cold start |
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| CN209100148U (en) * | 2018-10-17 | 2019-07-12 | 徐州徐工挖掘机械有限公司 | A kind of high revolving speed flame-out protection device of engine |
| CN110700974A (en) * | 2019-11-21 | 2020-01-17 | 鲁东大学 | Vehicle oil tank control system |
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