CN201916049U - Walking vehicle and its internal combustion engine charging system - Google Patents

Abstract

The utility model discloses an inflation system for an internal combustion engine, which comprises an air storage device, the internal combustion engine provided with at least one air source cylinder, an oil sprayer arranged on the air source cylinder and a switching device arranged in an air channel for communicating the air storage device with the air source cylinder, an execution device, a pressure detection device and a control device, wherein the output end of the execution device is connected with the switching device; the input end of the pressure detection device is connected with the air storage device and the air source cylinder; the input end of the control device is connected with the output end of the pressure detection device; the output end of the control device is connected with the oil sprayer and the execution device; when the pressure value of the air storage device is less than or equal to the preset pressure value, the oil sprayer stops spraying oil; and when the pressure value of the air storage device is less than or equal to the preset pressure value and the difference value between the pressure value of the air storage device and the pressure value of a combustion chamber is less than or equal to the pressure value of the air storage device, the switching device is conducted by the execution device. The air source cylinder of the inflation system for the internal combustion engine, which is disclosed by the utility model, can be controlled by the control device to provide compressed air for the air storage device of matched products. The utility model further discloses a traveling vehicle.

Description

Walking vehicle and its internal combustion engine charging system

technical field

The utility model relates to the technical field of engineering machinery, in particular to an air charging system for an internal combustion engine. In addition, the utility model also relates to a walking vehicle comprising the above-mentioned charging system for an internal combustion engine.

Background technique

At present, the reciprocating piston internal combustion engine, as a common heat engine, is widely used in military and civilian fields such as automobiles, engineering machinery, ships, and tanks.

The working process of the internal combustion engine is briefly described as follows: air enters the combustion chamber during the intake stroke, and the gas in the combustion chamber is compressed to generate high-pressure gas during the compression stroke. When the compression stroke is about to end, fuel is injected to form high-temperature and high-pressure gas. The method makes the high-temperature and high-pressure gas burn to generate heat energy. During the power stroke, the heat energy drives the crank-link mechanism to rotate and converts it into mechanical energy to generate external power. The exhaust gas is discharged during the exhaust stroke, and then reciprocates in this way to provide continuous power for mechanical equipment.

For the convenience of description, some technical terms used in this article are explained as follows:

Internal combustion engine: It is a heat engine that mixes liquid or gaseous fuel with air and directly inputs it into the machine for combustion to generate heat energy and then converts it into mechanical energy.

Air compressor: It is the main body of the air source device. It is a device that converts the mechanical energy of the prime mover into gas pressure energy, and is a pressure generating device for compressing air.

ECU: electronic control unit, the function is to calculate, process and judge the information input by the air flow meter and various sensors according to the programs and data in its memory, and then output instructions to the controlled components.

One-way valve: A directional control valve in which the medium can only flow in one direction but not in the opposite direction.

The first predetermined pressure value: the minimum pressure value required for the normal operation of the gas storage device.

The second predetermined pressure value: the highest pressure value required for the normal operation of the gas storage device.

In order to meet the functional needs of the supporting products of the internal combustion engine, the internal combustion engine not only provides power output to the supporting products through the crank linkage, but also provides other forms of power to the supporting products by adding external equipment, such as: adding a generator to the battery of the supporting products At the same time, for internal combustion engines used in the fields of automobiles and construction machinery, an external air compressor is generally added, which is driven by a transmission mechanism to provide compression for the air brake system or other auxiliary air systems of supporting products. gas.

The air compressor is driven by the transmission mechanism of the internal combustion engine to provide compressed gas to the interior of the gas storage device such as the gas storage tank of the supporting product.

However, since the air compressor is an independent peripheral device of the internal combustion engine, its arrangement increases the weight of the internal combustion engine, thereby increasing the weight of equipment equipped with the above internal combustion engine. When the above internal combustion engine is applied to mobile equipment, the required The increase in traction power has resulted in an increase in the cost of use; at the same time, due to the high manufacturing cost of the air compressor itself, its application has also increased the cost of the entire internal combustion engine; further, the air compressor is used as a gas storage device The way of providing compressed gas is driven by the transmission mechanism of the internal combustion engine. Therefore, no matter whether the gas storage device is in a state that needs to be inflated, the air compressor will rotate with the engine. When filling the air device, the air compressor still rotates and consumes the power of the internal combustion engine, which makes the load on the internal combustion engine higher, increases fuel consumption, and increases working noise and vibration.

Of course, in order to solve the above-mentioned problems and avoid the need to inflate the gas storage device, in the prior art, the power transmission is cut off by setting a clutch, or an air pressure control circuit is set so that the air compressor does not output high-pressure gas to the outside; but The added clutch also consumes the power of the internal combustion engine needlessly, and the air compressor is also more complicated and the weight also increases; adding the air pressure control circuit, the air compressor is always rotating and consumes the power of the internal combustion engine, and the control circuit structure is complicated.

Therefore, on the basis of reducing the power consumption of the internal combustion engine, how to ensure the use of compressed gas in the auxiliary gas system of the auxiliary equipment of the internal combustion engine has become a technical problem to be solved by those skilled in the art.

Utility model content

The purpose of this utility model is to provide an internal combustion engine charging system, the gas source cylinder of the internal combustion engine of the internal combustion engine charging system can use the upward movement and downward movement of the piston during the working cycle of the reciprocating piston internal combustion engine itself under the control of the control device, Provide compressed gas for the gas storage device of supporting products. Another object of the present utility model is to provide a walking vehicle comprising the above-mentioned charging system for an internal combustion engine.

In order to solve the above technical problems, the utility model provides an internal combustion engine charging system, including a gas storage device, and also includes

an internal combustion engine provided with at least one gas source cylinder,

the fuel injector provided on the air source cylinder,

a switch device arranged in the air passage connecting the air storage device and the air source cylinder,

an actuator device whose output is connected to said switching device,

a pressure detection device whose input end is connected to the gas storage device and the combustion chamber,

The input end is connected to the output end of the pressure detection device, and the output end is connected to the control device connected to the fuel injector and the actuator device. When the pressure value of the gas storage device is less than or equal to a predetermined pressure value, the The injector stops fuel injection, when the pressure value of the gas storage device is less than or equal to the predetermined pressure value and the difference between the pressure value of the gas storage device and the pressure value of the combustion chamber is less than or equal to the pressure value of the gas storage device When the pressure value is , the actuating device turns on the switching device.

Preferably, the switch device is a two-position two-way valve.

Preferably, the actuator is a solenoid valve.

Preferably, the air passage is opened on the cylinder head or cylinder block of the internal combustion engine.

Preferably, the pressure detection device is a pressure sensor.

Preferably, the internal combustion engine is a four-stroke reciprocating piston internal combustion engine or a two-stroke direct injection internal combustion engine.

In order to solve the above-mentioned technical problems, the utility model also provides a walking vehicle, including gas equipment and an internal combustion engine charging system connected with the gas equipment, and the internal combustion engine charging system is the internal combustion engine charging system described in any one of the above.

The internal combustion engine inflation system provided by the utility model includes a gas storage device, and also includes an internal combustion engine provided with at least one gas source cylinder, an injector disposed on the gas source cylinder, and disposed in an air passage connecting the gas storage device and the gas source cylinder The switch device, the output end is connected to the actuator device of the switch device, the input end is connected to the gas storage device and the pressure detection device connected to the combustion chamber, the input end is connected to the output end of the pressure detection device, and the output end is connected to the fuel injector and the actuator device The control device, when the pressure value of the gas storage device is less than or equal to the predetermined pressure value, the injector stops injecting fuel, when the pressure value of the gas storage device is less than or equal to the predetermined pressure value and the pressure value of the gas storage device is the same as that of the combustion chamber When the difference of the pressure value is less than or equal to the pressure value of the gas storage device, the execution device makes the switch device conduct. During the working process, the pressure detection device detects the pressure value of the gas storage device and the combustion chamber of the air source cylinder at all times, and transmits the pressure value of the gas storage device and the pressure value of the combustion chamber to the control device, and the control device transmits the pressure value of the gas storage device Compare with the predetermined pressure value, and compare the difference between the pressure value of the gas storage device and the pressure value of the combustion chamber with the predetermined difference. When the pressure value of the gas storage device is less than or equal to the predetermined pressure value, the control device sends The fuel injector of the air source cylinder issues a command to stop fuel injection, while the air source cylinder is still driven by other cylinders of the internal combustion engine. , when the piston moves upward, the pressure value of the combustion chamber of the air source cylinder increases, and when the difference between the pressure value of the gas storage device and the pressure value of the combustion chamber is less than or equal to the predetermined difference, the execution device will The switch device is set at the conduction position to inflate the gas storage device. Once the piston of the gas source cylinder ends its upward movement and turns to downward movement, the gas pressure in the gas source cylinder decreases. When the pressure value of the gas storage device and the combustion chamber When the difference of the pressure value of the gas storage device is higher than the second predetermined difference value, the switch device is closed to prevent the gas backflow in the gas storage device, and so on, until the pressure value of the gas storage device is greater than or equal to the second predetermined pressure value, the control device controls The switch device remains in the closed state, and the fuel injector of the air source cylinder resumes fuel injection to provide power for walking vehicles and other supporting equipment. It can be seen that the internal combustion engine inflation system provided by the utility model inflates the air storage device of the walking vehicle through the air source cylinder of the internal combustion engine, and does not need an additional air compressor, thus avoiding a series of problems caused by the air compressor. Problem; At the same time, through the cooperation of the pressure detection device, the control device and the execution device, the precise control of the working state of the injector and the switch device is realized, which ensures the reliability of the inflation process.

The beneficial effects of the walking vehicle provided by the utility model are the same as those of the above-mentioned internal combustion engine charging system, and will not be repeated here.

Description of drawings

Fig. 1 is the structural block diagram of the internal combustion engine charging system provided by a kind of specific embodiment of the present utility model;

Fig. 2 is a schematic structural diagram of an internal combustion engine charging system provided by another specific embodiment of the present invention.

Detailed ways

The core of the utility model is to provide an internal combustion engine charging system, the gas source cylinder of the internal combustion engine of the internal combustion engine charging system can use the upward movement and downward movement of the piston during the working cycle of the reciprocating piston internal combustion engine itself under the control of its control device , to provide compressed gas for the gas storage device 4 of the supporting product. Another core of the utility model is to provide a walking vehicle including the above-mentioned internal combustion engine charging system.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 , which is a structural block diagram of an internal combustion engine charging system provided by a specific embodiment of the present invention.

As shown in Figure 1, in a specific embodiment, the internal combustion engine charging system provided by the utility model includes an internal combustion engine, a gas storage device 4, a pressure detection device 1, a control device 2 and an execution device 3, and also includes a switch device 5 , the internal combustion engine includes at least one air source cylinder 6, the switch device 5 is arranged in the air passage 8 communicating with the gas storage device 4 and the air source cylinder 6, the pressure detection device 1 detects the pressure in the gas storage device 4 and the air source cylinder 6, and obtains The pressure value of the gas storage device 4 and the pressure value of the combustion chamber, and transmit the pressure value of the gas storage device 4 and the pressure value of the combustion chamber to the control device 2, and the control device 2 compares the pressure value of the gas storage device 4 with the pre-stored pressure value Compare, and compare the difference between the pressure value of the gas storage device 4 and the pressure value of the combustion chamber with the predetermined difference, when the pressure value of the gas storage device 4 is lower than or equal to the pre-stored pressure value, the gas source cylinder 6 The fuel injector 7 stops injecting oil into the air source cylinder 6 according to the instruction of the control device 2, when the pressure value of the gas storage device 4 is lower than or equal to the pre-stored pressure value and When the difference is lower than or equal to the pressure value of the gas storage device 4 , the execution device 3 also controls the switch device 5 to conduct according to the instruction of the control device 2 .

Specifically, the gas source cylinder 6 described herein refers to the cylinder of the internal combustion engine that inflates the gas storage device 4. When the gas storage device 4 is not charged, the gas source cylinder 6 plays the same role as other cylinders to provide power for supporting equipment. The role of the switching device 5 described herein is set in the air passage 8 connecting the gas storage device 4 and the air source cylinder 6 means that the switching device 5 can be arranged in any position in the air passage 8, but usually in order to reduce The setting of the air passage 8 creates a harmful space for the air source cylinder 6 (referring to affecting the normal combustion of the air source cylinder, the space is not conducive to the full combustion of the high-pressure mixed gas), the switch device 5 can be set as close as possible to the air source cylinder 6 ; The internal combustion engine described herein can be a four-stroke reciprocating piston internal combustion engine or a two-stroke direct-injection internal combustion engine, and certainly can be other internal combustion engines that can realize the inflation effect; The pressure in the combustion chamber of 6, therefore, the number of pressure detection device 1 can be two, and, because pressure detection device 1 mainly detects the pressure in the combustion chamber of gas storage device 4 and air source cylinder 6, pressure detection device 1 can be Pressure Sensor.

Simultaneously, the opening position of air channel 8 can be determined according to the convenience of setting, both can be set on the cylinder head, also can be set on the cylinder block, as long as can realize the gap between the combustion chamber of the air source cylinder 6 and the gas storage device 4 connection is possible.

Since the switch device 5 has a certain action time from the opening to the maximum position, and the flow of gas is also affected by factors such as the flow capacity of the gas channel 8, so in the actual control process, the pressure value of the combustion chamber should be less than or equal to the pressure value of the gas storage device 4, start to open the switch device 5, and when the switch device 5 is fully opened, the pressure value of the combustion chamber has been equal to or greater than the pressure value of the gas storage device 4, to ensure the charging efficiency, the predetermined difference It is set in the above situation; similarly, the second predetermined difference is also set in consideration of the time from the maximum position of the switch device 5 to fully closed, gas flow inertia and other factors.

During the working process, the pressure detection device 1 detects the pressure value in the combustion chamber of the gas storage device 4 and the air source cylinder 6 at all times, and transmits the pressure value of the gas storage device 4 and the pressure value of the combustion chamber to the control device 2, and the control device 2 will The pressure value of the gas storage device 4 is compared with the predetermined pressure value, and the difference between the pressure value of the gas storage device 4 and the pressure value of the combustion chamber is compared with the predetermined difference, when the pressure value of the gas storage device 4 is less than or equal to When the predetermined pressure value is reached, the control device 2 sends an instruction to the fuel injector 61 of the air source cylinder 6 of the internal combustion engine to stop fuel injection, while the air source cylinder 6 is still driven by other cylinders of the internal combustion engine, and the piston is still moving downward, sucking in air and pistons from the outside. Upward, the reciprocating motion of compressing the air sucked into the cylinder, when the piston is upward, the pressure value of the combustion chamber of the air source cylinder 6 increases, when the difference between the pressure value of the gas storage device 4 and the pressure value of the combustion chamber is less than or equal to the predetermined difference, the execution device 3 sets the switch device 5 to the conduction position according to the instruction of the control device 2, so as to inflate the gas storage device 4, once the piston of the air source cylinder 6 finishes the upward movement and turns to the downward movement , the gas pressure in the gas source cylinder 6 decreases, and when the difference between the pressure value of the gas storage device 4 and the pressure value of the combustion chamber is higher than the second predetermined difference, the switch device 5 is closed to prevent the gas in the gas storage device 4 from Backflow, and so on, until the pressure value of the air storage device 4 is greater than or equal to the second predetermined pressure value, the control device 2 controls the switch device 5 to keep the closed state, and the fuel injector 61 of the air source cylinder 6 resumes injecting oil, for walking Vehicles and other supporting equipment provide power.

It can be seen that the internal combustion engine inflation system provided by the utility model inflates the air storage device 4 of the walking vehicle through the air source cylinder 6 of the internal combustion engine, without the need for an additional air compressor, thus avoiding the need for an air compressor. A series of problems, that is, on the basis of reducing the power consumption of the internal combustion engine, use a relatively simple structure to ensure the use of compressed gas in the auxiliary gas system of the internal combustion engine supporting equipment; The mutual cooperation of the two realizes the precise control of the working state of the fuel injector 7 and the switch device 5, and ensures the reliability of the charging process.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of an internal combustion engine charging system provided by another specific embodiment of the present invention.

As shown in the figure, in a specific implementation manner, the switching device 5 may include a two-position two-way valve 51, driven by the actuator 3, the two-position two-way valve 51 changes positions according to the instructions of the control device 1 to realize The conduction and cutoff of the air passage 8 communicating with the air source cylinder 6 and the air storage device 4 . The control process of the position change of the two-position two-way valve 51 is simple, and automatic control can be realized conveniently. Of course, the above-mentioned two-position two-way valve 51 can also be replaced by other valves capable of realizing the on-off function, and the specific method used is not limited herein.

For the convenience of control, the above-mentioned actuator 3 can be a solenoid valve 31, and the solenoid valve 31 can directly control the position of on-off valves such as two-position two-way valves by electromagnetic means after receiving the control command, so as to complete the execution task. Of course, the above-mentioned actuator 3 can also be It is a pneumatic circuit or a hydraulic circuit, and realizes the change of the position of the two-position two-way valve 51 and other on-off valves by means of air pressure or hydraulic pressure.

In addition to the above-mentioned internal combustion engine inflation system, the utility model also provides a walking vehicle, including gas equipment and an internal combustion engine inflation system connected with the gas equipment, the internal combustion engine inflation system is the above-mentioned internal combustion engine inflation system, the structure of other parts of the walking vehicle Please refer to the prior art, which will not be repeated here.

Of course, the supporting equipment of the internal combustion engine charging system can also be equipment such as power generation equipment or ships, and is not limited to the walking vehicles described herein.

Further, according to the different supporting equipment used in the internal combustion engine charging system, the above internal combustion engine charging system can specifically be the internal combustion engine charging system of the walking vehicle, the internal combustion engine charging system of the power generation equipment or the internal combustion engine charging system of the ship.

The walking vehicle and its internal combustion engine charging system provided by the utility model have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (7)

1. an internal-combustion engine gas charging system comprises caisson, it is characterized in that, also comprises

Be provided with the internal-combustion engine of at least one source of the gas cylinder,

Be arranged at the oil sprayer of described source of the gas cylinder,

Be arranged at the switch gear in the air flue that is communicated with described caisson and described source of the gas cylinder,

The actuating device that output terminal is connected with described switch gear,

The pressure-detecting device that input end and described caisson are connected with described firing chamber,

Input end is connected with the output terminal of described pressure-detecting device, the control gear that output terminal and described oil sprayer are connected with described actuating device, when the force value of described caisson is less than or equal to scheduled pressure value, described oil sprayer stops oil spout, when the difference that is less than or equal to the force value of the force value of scheduled pressure value and described caisson and described firing chamber when the force value of described caisson was less than or equal to the force value of described caisson, described actuating device made described switch gear conducting.

2. internal-combustion engine gas charging system according to claim 1 is characterized in that, described switch gear is a two position two-way valve.

3. internal-combustion engine gas charging system according to claim 2 is characterized in that, described actuating device is a solenoid valve.

4. internal-combustion engine gas charging system according to claim 3 is characterized in that, described air flue is opened on the cylinder head or cylinder block of described internal-combustion engine.

5. internal-combustion engine gas charging system according to claim 4 is characterized in that, described pressure-detecting device is a pressure transducer.

6. according to each described traveling vehicle internal-combustion engine gas charging system of claim 1 to 5, it is characterized in that described internal-combustion engine is four-stroke stroke piston combustion engine or two-stroke direct-injection internal combustion engine.

7. a traveling vehicle comprises gas equipment and the internal-combustion engine gas charging system that is connected with described gas equipment, it is characterized in that, described internal-combustion engine gas charging system is each described internal-combustion engine gas charging system of claim 1 to 6.

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