CN110588369B - Method, system and device for simulating flameout of manual fuel-oil-blocking vehicle - Google Patents
Method, system and device for simulating flameout of manual fuel-oil-blocking vehicle Download PDFInfo
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- CN110588369B CN110588369B CN201910927374.0A CN201910927374A CN110588369B CN 110588369 B CN110588369 B CN 110588369B CN 201910927374 A CN201910927374 A CN 201910927374A CN 110588369 B CN110588369 B CN 110588369B
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 239000000446 fuel Substances 0.000 claims abstract description 59
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- 239000000295 fuel oil Substances 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000007935 neutral effect Effects 0.000 claims description 13
- 238000004088 simulation Methods 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 6
- 230000002596 correlated effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/28—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed without contact making and breaking, e.g. using a transductor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/48—Drive Train control parameters related to transmissions
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The invention discloses a method, a system and a device for simulating flameout of a manual-gear fuel vehicle, which are applied to an electric vehicle. The electric automobile is controlled to extinguish if the state of the electric automobile meets any one of flameout conditions when the electric automobile actually works. Therefore, the motor rotating speed is not simply used as the only judgment condition for flameout of the electric automobile under different flameout conditions, but different flameout conditions of the electric automobile are correspondingly set according to different flameout conditions of the manual-gear fuel-oil automobile, namely, different state information changes of the electric automobile are used as judgment conditions, the control precision requirement on the motor rotating speed is lowered, and therefore different flameout conditions of the manual-gear fuel-oil automobile can be well simulated under the condition that the motor rotating speed cannot well simulate the change of the engine rotating speed.
Description
Technical Field
The invention relates to the field of new energy automobile motor drive control, in particular to a method, a system and a device for simulating flameout of a manual-gear fuel-fired automobile.
Background
The energy consumption efficiency of the new energy automobile is higher than that of the traditional fuel vehicle, and the engine efficiency of the fuel vehicle is very low under a low-speed working condition and generally does not reach 20%; the motor efficiency of the electric automobile can basically reach more than 70% under any working condition, and can reach about 96% at most. Therefore, for vehicles requiring long-term low-speed driving (such as driving schools), the use of electric vehicles can save a lot of fuel cost, and therefore, for fuel vehicles requiring long-term low-speed driving, it is necessary to replace them with electric vehicles.
At present, compared with an automatic-gear fuel vehicle, an electric vehicle can basically realize seamless switching, but the electric vehicle has a larger difference compared with a manual-gear fuel vehicle, and the main difference is that the manual-gear fuel vehicle can stop flame and idle shake under the condition of improper operation. In the prior art, in order to make the electric automobile simulate the driving experience of flameout of the manual fuel-oil-retaining vehicle, the commonly adopted technical means are as follows: and judging whether the rotating speed of the motor is less than a flameout rotating speed threshold value, if so, controlling the motor to stop rotating, namely controlling the electric automobile to flameout. However, there is more than one flameout condition of the manual-gear fuel vehicle, and because the existing flameout simulation method uses the motor speed as the only determination condition for flameout of the electric vehicle, if different flameout conditions of the manual-gear fuel vehicle are to be well simulated, the condition that the motor speed can well simulate the change of the engine speed is required.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a method, a system and a device for simulating flameout of a manual-gear fuel vehicle, wherein different flameout conditions of an electric vehicle are set correspondingly according to different flameout conditions of the manual-gear fuel vehicle, namely, different state information changes of the electric vehicle are all used as judgment conditions, so that the requirement on the control precision of the rotating speed of a motor is lowered, and different flameout conditions of the manual-gear fuel vehicle can be well simulated under the condition that the rotating speed of the motor cannot well simulate the rotating speed change of an engine.
In order to solve the technical problem, the invention provides a method for simulating flameout of a manual-gear fuel vehicle, which is applied to an electric vehicle and comprises the following steps:
different flameout conditions of the electric automobile are set correspondingly according to different flameout conditions of the manual fuel-oil-transmission vehicle in advance;
and detecting the state information of the electric automobile, and controlling a motor of the electric automobile to stop rotating when the electric automobile is determined to meet any flameout condition of different flameout conditions according to the state information so as to control the electric automobile to flameout.
Preferably, the flameout condition of the fuel-operated vehicle comprises a flameout condition of the fuel-operated vehicle when the fuel-operated vehicle is started at idle speed;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
under the conditions that the electric automobile is not started, a clutch pedal of the electric automobile is in an invalid state, and a gear is engaged into a non-neutral gear, if the condition that the motor rotating speed of the electric automobile is smaller than a preset flameout rotating speed threshold value or the motor torque is larger than a preset flameout torque threshold value is detected, the electric automobile is determined to meet flameout conditions.
Preferably, the flameout condition of the fuel-operated vehicle comprises a flameout condition of the fuel-operated vehicle when the fuel-operated vehicle is started at idle speed;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
in the process that the clutch pedal is changed from the invalid state to the valid state, if the detected motor torque is greater than a preset first torque threshold value and the duration is greater than a first time, determining that the electric automobile meets a flameout condition; wherein the first time is inversely related to the motor torque.
Preferably, the first time is (k1-k2 × motor torque) × 10; and k1 and k2 are parameters defined according to the actual flameout condition of the manual fuel vehicle during idle starting.
Preferably, the flameout condition of the fuel-operated vehicle comprises a flameout condition of the fuel-operated vehicle when the fuel-operated vehicle is started at idle speed;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
in a preset second time after the clutch pedal is changed from the invalid state to the valid state, if the fact that the increment of the motor torque is larger than a preset torque change threshold and the duration is larger than a preset third time or the fact that the motor torque is larger than a preset second torque threshold and the duration is larger than a preset third time is detected, it is determined that the electric automobile meets a flameout condition; wherein the preset second time is greater than the preset third time.
Preferably, the flameout condition of the manual fuel-shift vehicle comprises a flameout condition of the manual fuel-shift vehicle when the manual fuel-shift vehicle starts in a gear;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
under the condition that the gear of the electric automobile is engaged into a non-neutral gear and a clutch pedal is in an effective state, if it is detected that the starting time of the electric automobile reaches a preset fourth time or the motor torque is larger than a preset starting flameout torque threshold value, it is determined that the electric automobile meets flameout conditions.
Preferably, the flameout condition of the manual fuel-shift vehicle comprises a flameout condition of the manual fuel-shift vehicle during driving;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
in the running process of the electric automobile, if the rotating speed of the motor is detected to be less than a preset flameout maximum rotating speed threshold value and the duration time reaches a fifth time, determining that the electric automobile meets a flameout condition; wherein the fifth time is positively correlated with the motor speed.
Preferably, the fifth time is (k3 × motor speed-k 4) × 10; wherein k3 and k4 are parameters defined according to the actual flameout condition of the manual fuel-cut vehicle during running.
In order to solve the technical problem, the invention also provides a system for simulating flameout of a manual-gear fuel vehicle, which is applied to an electric vehicle and comprises:
the condition setting module is used for correspondingly setting different flameout conditions of the electric automobile in advance according to different flameout conditions of the manual fuel-oil-shift vehicle;
and the flameout control module is used for detecting the state information of the electric automobile, and controlling the motor of the electric automobile to stop rotating when the electric automobile is determined to meet any flameout condition in different flameout conditions according to the state information so as to control the electric automobile to flameout.
In order to solve the technical problem, the invention also provides a device for simulating flameout of a manual fuel-oil-retaining vehicle, which comprises:
a memory for storing a computer program;
and the processor is used for realizing the steps of any one of the simulation methods for flameout of the manual fuel-oil-shift vehicle when the computer program is executed.
The invention provides a method for simulating flameout of a manual-gear fuel vehicle, which is applied to an electric vehicle. The electric automobile is controlled to extinguish if the state of the electric automobile meets any one of flameout conditions when the electric automobile actually works. Therefore, the motor rotating speed is not simply used as the only judgment condition for flameout of the electric automobile under different flameout conditions, but different flameout conditions of the electric automobile are correspondingly set according to different flameout conditions of the manual-gear fuel-oil automobile, namely, different state information changes of the electric automobile are used as judgment conditions, the control precision requirement on the motor rotating speed is lowered, and therefore different flameout conditions of the manual-gear fuel-oil automobile can be well simulated under the condition that the motor rotating speed cannot well simulate the change of the engine rotating speed.
The invention also provides a system and a device for simulating flameout of the manual-gear fuel vehicle, and the system and the device have the same beneficial effects as the simulation method.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a method for simulating flameout of a manual fuel-fired vehicle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system for simulating flameout of a manual fuel-stop vehicle according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a method, a system and a device for simulating flameout of a manual fuel-blocking vehicle, different flameout conditions of an electric vehicle are correspondingly set according to different flameout conditions of the manual fuel-blocking vehicle, namely, different state information changes of the electric vehicle are all used as judgment conditions, and the requirement on the control precision of the rotating speed of a motor is reduced, so that different flameout conditions of the manual fuel-blocking vehicle can be well simulated under the condition that the rotating speed of the motor cannot well simulate the rotating speed change of an engine.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a method for simulating flameout of a manual fuel-fired vehicle according to an embodiment of the present invention.
The method for simulating flameout of the manual-gear fuel vehicle is applied to the electric vehicle and comprises the following steps:
step S1: different flameout conditions of the electric automobile are set correspondingly according to different flameout conditions of the manual fuel-oil-transmission vehicle in advance.
Specifically, the flameout condition of the manual fuel-shift vehicle is firstly analyzed according to the driving habit of the manual fuel-shift vehicle, and the manual fuel-shift vehicle generally comprises the following flameout conditions: 1) when the manual-gear fuel vehicle is in an idle speed, the gear of the manual-gear fuel vehicle is shifted into a 1 gear or a 2 gear or a reverse gear, a clutch pedal of the manual-gear fuel vehicle is released for starting, the rotating speed of an engine can be rapidly reduced below the idle speed under the condition that the clutch pedal is too fast released, and the manual-gear fuel vehicle is flameout; 2) when the manual-gear fuel vehicle is in an idle speed, the gear of the manual-gear fuel vehicle is shifted to a gear above 2, an accelerator pedal is not stepped on in time when a clutch pedal is released to start so as to maintain the engine at or above the idle speed, and the manual-gear fuel vehicle is flamed out; 3) when the manual-gear fuel vehicle is started, if a clutch pedal is not stepped on and a gear is engaged to a non-neutral gear, namely the manual-gear fuel vehicle is started with a gear, the starting fails, and the manual-gear fuel vehicle is flamed out; 4) during the driving process of the manual fuel-oil-shift vehicle, the engine is not in neutral gear or the clutch pedal is not pressed down after the rotating speed of the engine is reduced below the idling rotating speed, so that the engine is suppressed and flameout is caused.
Based on this, in order to make electric automobile simulate the different flame-out circumstances of manual fender fuel vehicle well, this application sets up electric automobile's different flame-out conditions according to the different flame-out circumstances of manual fender fuel vehicle correspondingly in advance, and manual fender fuel vehicle stalls under a driving scene promptly, and then electric automobile should also satisfy flame-out conditions under the same driving scene, lays the basis for follow-up electric automobile simulation manual fender fuel vehicle stalls.
Step S2: and detecting the state information of the electric automobile, and controlling the motor of the electric automobile to stop rotating when the electric automobile is determined to meet any flameout condition of different flameout conditions according to the state information so as to control the electric automobile to flameout.
Specifically, the electric automobile of this application can be transformed into by manual fender fuel car: on the basis of a manual fuel-oil-retaining Vehicle, a power System and an energy storage System of the manual fuel-oil-retaining Vehicle are electrically modified, specifically, an engine is replaced by a Motor, an engine Electronic Control Unit (ECU) is removed, a clutch, a gearbox, an accelerator pedal (a pedal stroke sensor for detecting stroke information of the accelerator pedal is reserved, the Brake pedal (only switches and is ineffective when not being stepped on and does not perform Brake operation), the clutch pedal (only switches and is ineffective when any stroke is stepped on, namely the clutch plate is effective when not being stepped on, of course, the switches can be in other forms and have the same principle), a VCU (Vehicle Control Unit), an MCU (Motor Control Unit) and an ABS (anti-lock Brake System), and the whole modification amount is small.
Correspondingly, the state information of the electric automobile can comprise clutch pedal on-off state, gear information, motor rotating speed, motor torque and automobile running speed, and can also comprise information such as accelerator pedal travel information and brake pedal on-off state, the brake pedal on-off state can be acquired by the VCU, specifically, the VCU directly acquires the gear information, the accelerator pedal travel information, the brake pedal on-off state and the clutch pedal on-off state by detecting the position of the gear shifting lever, the MCU returns the motor rotating speed and the motor torque to the VCU, and the ABS returns the automobile running speed to the VCU.
Based on this, the state information of the electric vehicle can be detected when the electric vehicle works, then whether the electric vehicle meets any flameout condition of the different flameout conditions set in the step S1 is judged according to the state information of the electric vehicle, and when the electric vehicle meets any flameout condition, the motor of the electric vehicle is controlled to stop rotating, so that the electric vehicle is controlled to flameout. Therefore, the electric automobile replaces the manual-gear fuel vehicle, so that fuel cost is saved, emission pollution is reduced, flameout driving experience of the manual-gear fuel vehicle can be well simulated, and driving habits of traditional fuel vehicles are kept.
In addition, the MCU of the electric automobile of this application can be operated under two kinds of control mode: the mode switch is carried out to rotational speed control mode and torque control mode by VCU control it, and this application contrasts two kinds of control mode, gives the electric automobile's of this application control strategy: the electric automobile is in a rotating speed control mode when the electric automobile is not stepping on the accelerator (namely idling), and is in a torque control mode when the electric automobile is stepping on the accelerator.
The invention provides a method for simulating flameout of a manual-gear fuel vehicle, which is applied to an electric vehicle. The electric automobile is controlled to extinguish if the state of the electric automobile meets any one of flameout conditions when the electric automobile actually works. Therefore, the motor rotating speed is not simply used as the only judgment condition for flameout of the electric automobile under different flameout conditions, but different flameout conditions of the electric automobile are correspondingly set according to different flameout conditions of the manual-gear fuel-oil automobile, namely, different state information changes of the electric automobile are used as judgment conditions, the control precision requirement on the motor rotating speed is lowered, and therefore different flameout conditions of the manual-gear fuel-oil automobile can be well simulated under the condition that the motor rotating speed cannot well simulate the change of the engine rotating speed.
On the basis of the above-described embodiment:
as an alternative embodiment, the flameout condition of the manual-gear fuel vehicle comprises the condition that the manual-gear fuel vehicle is flameout when idling for starting;
accordingly, the setting process of the flameout condition of the electric vehicle includes:
under the conditions that the electric automobile is not started, the clutch pedal of the electric automobile is in an invalid state, and the gear is engaged into a non-neutral gear, if the condition that the motor rotating speed of the electric automobile is smaller than a preset flameout rotating speed threshold value or the motor torque is larger than a preset flameout torque threshold value is detected, the electric automobile is determined to meet flameout conditions.
It should be noted that the preset of the present application is set in advance, and only needs to be set once, and the reset is not needed unless the modification is needed according to the actual situation.
Specifically, according to the above embodiment, the flameout condition of the manual-gear fuel vehicle includes a flameout condition of the manual-gear fuel vehicle when the manual-gear fuel vehicle starts idling, and the flameout principle of the manual-gear fuel vehicle under the condition is as follows: the engine runs at an idle speed, when the clutch pedal is released to start, a large load is suddenly loaded on the engine, the idle speed of the engine is reduced due to the limited idle speed regulation speed of the engine, and when the engine speed is reduced to a certain threshold value below the idle speed, the engine stops oil injection and ignition, namely stops working.
The operation of the known electric vehicle at idle-speed take-off is: the gear of the electric automobile is engaged into a non-neutral gear, a clutch pedal is released, and when a clutch plate is contacted, the resistance of a tire is loaded on a motor of the electric automobile through a transmission shaft and a clutch, so that the rotating speed of the motor is reduced; in order to maintain the target rotating speed of the motor issued by the VCU, the MCU increases the output torque of the motor. When the clutch pedal is loosened more quickly, the more the motor speed is reduced, the greater the motor output torque reaches.
Based on the above, in order to make the electric vehicle simulate the condition that the manual fuel-oil-gear vehicle is shut down during the idle-speed starting, the first shut-down condition of the electric vehicle during the idle-speed starting is set as follows: under the conditions that the electric automobile is not started (namely the running speed of the automobile returned by the ABS is 0), the clutch pedal of the electric automobile is in an invalid state (the clutch pedal is in an invalid state in the process of gradually releasing the clutch pedal), and the gear is engaged into a non-neutral gear, if the motor rotating speed of the electric automobile is detected to be smaller than a preset flameout rotating speed threshold value n1 or the motor torque is detected to be larger than a preset flameout torque threshold value T0, the electric automobile is determined to meet the flameout condition.
As an alternative embodiment, the flameout condition of the manual-gear fuel vehicle comprises the condition that the manual-gear fuel vehicle is flameout when idling for starting;
accordingly, the setting process of the flameout condition of the electric vehicle includes:
in the process of changing the clutch pedal from the invalid state to the valid state, if the detected torque of the motor is greater than a preset first torque threshold value and the duration is greater than a first time, determining that the electric automobile meets a flameout condition; wherein the first time is inversely related to the motor torque.
Specifically, it is considered that in the first flameout condition of the electric vehicle at the time of idle start mentioned in the above embodiment, if the set value of the preset flameout rotation speed threshold n1 is small, the electric vehicle is difficult to flameout; if the preset flameout speed threshold n1 is set to be larger, the electric vehicle will flameout more frequently, so the preset flameout speed threshold n1 is set to be higher.
Based on this, this application still can set up the second kind for electric automobile when idle starting flameout condition: during the process that the clutch pedal is changed from the invalid state to the valid state, namely during the process that the clutch pedal is pressed down to be completely released, if the motor torque is detected to be larger than a preset first torque threshold value T1 and the duration (counting is started when the motor torque is larger than a preset first torque threshold value T1, and if the motor torque is larger than a preset first torque threshold value T1, the counting time is accumulated all the time, and the counting time is the duration) is larger than the first time T1, the electric automobile is determined to meet the flameout condition.
It can be understood that, when the value of the preset first torque threshold T1 is set, the value should be set to be smaller, so as to avoid that the electric vehicle is difficult to flameout; and because of the setting of the first time, the electric automobile is prevented from being flameout frequently.
In addition, for better adaptability, the first time t1 is related to the motor torque, and it can be understood that the larger the motor torque, the smaller the first time t1, the faster the electric vehicle is turned off, i.e., the first time t1 is in negative correlation with the motor torque.
As an alternative embodiment, the first time is (k1-k2 × motor torque) × 10; and k1 and k2 are parameters defined according to the actual flameout condition of the manual fuel vehicle during idle starting.
Further, the first time t1 is linear with the motor torque, specifically, the first time t1 ═ k1-k2 × motor torque × 10 (motor torque unit: N · m; first time unit: ms). Since the embodiment corresponds to the actual flameout condition of the electric automobile when the manual-gear fuel vehicle starts idling, the parameters k1 and k2 are defined according to the actual flameout condition of the manual-gear fuel vehicle when the manual-gear fuel vehicle starts idling.
As an alternative embodiment, the flameout condition of the manual-gear fuel vehicle comprises the condition that the manual-gear fuel vehicle is flameout when idling for starting;
accordingly, the setting process of the flameout condition of the electric vehicle includes:
in a preset second time after the clutch pedal is changed from the invalid state to the valid state, if the fact that the increment of the motor torque is larger than a preset torque change threshold and the duration is larger than a preset third time or the fact that the motor torque is larger than a preset second torque threshold and the duration is larger than a preset third time is detected, it is determined that the electric automobile meets a flameout condition; wherein the preset second time is greater than the preset third time.
Specifically, considering that the clutch plate can slip under the condition that the clutch pedal of the electric vehicle is loosened too fast, the clutch plate cannot be completely contacted at the moment that the clutch pedal is completely loosened, and the clutch plate can be completely contacted only within a certain time, so that the electric vehicle cannot meet the flameout condition of the electric vehicle during idle starting when the clutch pedal is loosened too fast, and therefore the third flameout condition can be set for the electric vehicle during idle starting: if the increase of the motor torque is detected to be larger than a preset torque change threshold value delta T and the duration (if the motor torque is increased after the clutch pedal is completely released, timing is started when the increase of the motor torque is larger than the preset torque change threshold value delta T, and if the increase of the motor torque is always larger than the preset torque change threshold value delta T, the timing time is accumulated all the time, and the timing time is the duration) is larger than a preset third time T3 within a preset second time T2 after the clutch pedal is changed from an invalid state to an valid state (namely, after the clutch pedal is completely released), the electric automobile is determined to meet a flameout condition; or detecting that the motor torque is greater than the preset second torque threshold T2 and the duration (counting is started when the motor torque is greater than the preset second torque threshold T2, if the motor torque is greater than the preset second torque threshold T2, the counting time is accumulated all the time, and the counting time is the duration) is greater than the preset third time T3, and determining that the electric vehicle meets the flameout condition.
The electric vehicle according to the present invention may be configured such that the engine stop condition at the time of idling start is selected from one of the three engine stop conditions mentioned in the above embodiments, and the specific engine stop condition is selected according to the actual situation.
As an alternative embodiment, the flameout condition of the manual fuel-shift vehicle comprises the condition that the manual fuel-shift vehicle is flameout when starting in a gear;
accordingly, the setting process of the flameout condition of the electric vehicle includes:
under the condition that the gear of the electric automobile is engaged into a non-neutral gear and the clutch pedal is in an effective state, if the starting time of the electric automobile reaches the preset fourth time or the motor torque is larger than the preset starting flameout torque threshold value, it is determined that the electric automobile meets flameout conditions.
Specifically, it can be known from the above embodiments that the flameout condition of the manual fuel-cut vehicle includes a flameout condition of the manual fuel-cut vehicle when the manual fuel-cut vehicle starts with a gear, and the flameout principle of the manual fuel-cut vehicle under this condition is as follows: when the manual-gear fuel vehicle is started, if a clutch pedal is not stepped on and a gear is engaged to a non-neutral gear, namely the starting torque of an engine is smaller than the load torque of the vehicle, the starting is failed, and the manual-gear fuel vehicle is flamed out.
Based on this, in order to make the electric automobile simulate the situation that the manual fuel-oil-retaining vehicle stalls when starting with the gear, the stall condition of the electric automobile in the starting process is set as follows: under the condition that the gear of the electric automobile is engaged into a non-neutral gear and a clutch pedal is in an effective state (the clutch pedal is not stepped on), if the torque of a motor is detected to be larger than a preset starting flameout torque threshold value T3, the electric automobile is determined to meet flameout conditions; or detecting that the starting time of the electric automobile reaches the preset fourth time t4, determining that the electric automobile meets the flameout condition (namely the electric automobile fails to start).
As an alternative embodiment, the flameout condition of the manual fuel-cut vehicle comprises a flameout condition of the manual fuel-cut vehicle during driving;
accordingly, the setting process of the flameout condition of the electric vehicle includes:
in the running process of the electric automobile, if the rotating speed of the motor is detected to be less than the preset flameout maximum rotating speed threshold value and the duration time reaches a fifth time, determining that the electric automobile meets the flameout condition; wherein the fifth time is positively correlated with the motor speed.
Specifically, it can be known from the above embodiments that the flameout condition of the manual fuel-cut vehicle includes a flameout condition of the manual fuel-cut vehicle during driving, and the flameout principle of the manual fuel-cut vehicle in this case is as follows: during the driving process of the manual fuel-oil-shift vehicle, after the rotating speed of the engine is reduced to be lower than the idling rotating speed, the engine is not in neutral or the clutch pedal is not pressed, namely the rotating speed of the engine is continuously lower than the idling rotating speed, so that the engine is suppressed to stop.
Based on this, in order to make the electric automobile simulate the situation that the manual fuel-cut vehicle stalls during the driving process, the stall condition of the electric automobile during the driving process is set as follows: in the running process of the electric automobile, if the motor rotating speed is detected to be less than the preset flameout maximum rotating speed threshold n2 and the duration (from the time when the motor rotating speed is less than the preset flameout maximum rotating speed threshold n2, if the motor rotating speed is less than the preset flameout maximum rotating speed threshold n2, the timing time is accumulated all the time, and the timing time is the duration) reaches a fifth time t5, it is determined that the electric automobile meets the flameout condition.
In addition, in order to have stronger adaptability, the fifth time t5 is related to the motor speed, and it can be understood that the larger the motor speed is, the larger the fifth time t5 is, the slower the electric vehicle is turned off, that is, the fifth time t5 is positively related to the motor speed.
As an alternative embodiment, the fifth time is (k3 × motor speed-k 4) × 10; wherein k3 and k4 are parameters defined according to the actual flameout condition of the manual fuel-cut vehicle during driving.
Specifically, the fifth time t5 is linear with the motor speed, specifically, the fifth time t5 is (k3 × motor speed-k 4) × 10 (motor speed unit: rpm; fifth time unit: ms). Since the embodiment corresponds to the actual flameout condition of the electric automobile during the driving process of the manual fuel-cut vehicle, the parameters k3 and k4 are defined according to the actual flameout condition of the manual fuel-cut vehicle during the driving process.
More specifically, the parameters and conditions of the electric vehicle may be set as follows: the idle speed is 850rpm, T1 is 80N · m, T1 is (44-0.34 × motor torque) × 10ms, T2 is 220ms, Δ T is 30N · m, T2 is 90N · m, T4 is 300ms, T3 is 70N · m, N2 is 650rpm, and T5 is (1.596 × motor speed-637) × 10 ms.
It should be noted that actual flameout conditions of the manual fuel-stop vehicles of different vehicle types are different, so the electric vehicle of the present application needs to set related parameters according to the simulated vehicle type of the manual fuel-stop vehicle.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a system for simulating flameout of a manual fuel-fired vehicle according to an embodiment of the present invention.
This manual fender fuel vehicle simulation system that stalls is applied to electric automobile, includes:
the condition setting module 1 is used for correspondingly setting different flameout conditions of the electric automobile in advance according to different flameout conditions of the manual fuel-oil-shift vehicle;
and the flameout control module 2 is used for detecting the state information of the electric automobile, and controlling the motor of the electric automobile to stop rotating when the electric automobile is determined to meet any flameout condition of different flameout conditions according to the state information so as to control the electric automobile to flameout.
For introduction of the simulation system provided in the present application, reference is made to the embodiments of the simulation method described above, and details of the simulation system are not repeated herein.
The invention also provides a flameout simulation device of the manual fuel-oil-blocking vehicle, which comprises the following components:
a memory for storing a computer program;
and the processor is used for realizing the steps of any one of the simulation methods for flameout of the manual fuel-oil-shift vehicle when executing the computer program.
For the introduction of the simulation apparatus provided in the present application, reference is made to the above-mentioned embodiments of the simulation method, which are not repeated herein.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A method for simulating flameout of a manual-gear fuel-oil vehicle is applied to an electric vehicle and comprises the following steps:
different flameout conditions of the electric automobile are set correspondingly according to different flameout conditions of the manual fuel-oil-transmission vehicle in advance;
detecting state information of the electric automobile, and controlling a motor of the electric automobile to stop rotating when the electric automobile is determined to meet any flameout condition of different flameout conditions according to the state information so as to control the electric automobile to flameout;
the flameout condition of the manual fuel-oil-blocking vehicle comprises a flameout condition of the manual fuel-oil-blocking vehicle during driving;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
in the running process of the electric automobile, if the rotating speed of the motor is detected to be less than a preset flameout maximum rotating speed threshold value and the duration time reaches a fifth time, determining that the electric automobile meets a flameout condition; wherein the fifth time is positively correlated with the motor speed.
2. The method for simulating flameout of a fuel-operated manual transmission vehicle as claimed in claim 1, wherein the flameout condition of the fuel-operated manual transmission vehicle comprises a flameout condition of the fuel-operated manual transmission vehicle when idling for starting;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
under the conditions that the electric automobile is not started, a clutch pedal of the electric automobile is in an invalid state, and a gear is engaged into a non-neutral gear, if the condition that the motor rotating speed of the electric automobile is smaller than a preset flameout rotating speed threshold value or the motor torque is larger than a preset flameout torque threshold value is detected, the electric automobile is determined to meet flameout conditions.
3. The method for simulating flameout of a fuel-operated manual transmission vehicle as claimed in claim 1, wherein the flameout condition of the fuel-operated manual transmission vehicle comprises a flameout condition of the fuel-operated manual transmission vehicle when idling for starting;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
in the process that a clutch pedal is changed into an effective state from an ineffective state, if the torque of a motor is detected to be larger than a preset first torque threshold value and the duration is detected to be larger than first time, the electric automobile is determined to meet flameout conditions; wherein the first time is inversely related to the motor torque.
4. The method for simulating flameout of a manual fuel-fired vehicle according to claim 3, wherein the first time is (k1-k2 x motor torque) x 10; and k1 and k2 are parameters defined according to the actual flameout condition of the manual fuel vehicle during idle starting.
5. The method for simulating flameout of a fuel-operated manual transmission vehicle as claimed in claim 1, wherein the flameout condition of the fuel-operated manual transmission vehicle comprises a flameout condition of the fuel-operated manual transmission vehicle when idling for starting;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
in a preset second time after the clutch pedal is changed from the invalid state to the valid state, if the fact that the increment of the motor torque is larger than a preset torque change threshold and the duration is larger than a preset third time or the fact that the motor torque is larger than a preset second torque threshold and the duration is larger than a preset third time is detected, it is determined that the electric automobile meets flameout conditions; wherein the preset second time is greater than the preset third time.
6. The method for simulating flameout of a fuel-operated manual transmission vehicle as claimed in any one of claims 1 to 5, wherein the flameout condition of the fuel-operated manual transmission vehicle comprises a flameout condition of the fuel-operated manual transmission vehicle when starting in a gear;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
under the condition that the gear of the electric automobile is engaged into a non-neutral gear and a clutch pedal is in an effective state, if it is detected that the starting time of the electric automobile reaches a preset fourth time or the motor torque is larger than a preset starting flameout torque threshold value, it is determined that the electric automobile meets flameout conditions.
7. The method for simulating flameout of a manual fuel-fired vehicle according to claim 1, wherein the fifth time is (k3 x motor speed-k 4) x 10; wherein k3 and k4 are parameters defined according to the actual flameout condition of the manual fuel-cut vehicle during running.
8. The utility model provides a manual fender fuel vehicle simulation system that stalls which characterized in that is applied to electric automobile, includes:
the condition setting module is used for correspondingly setting different flameout conditions of the electric automobile in advance according to different flameout conditions of the manual fuel-oil-shift vehicle;
the flameout control module is used for detecting state information of the electric automobile, and controlling a motor of the electric automobile to stop rotating when the electric automobile is determined to meet any flameout condition of different flameout conditions according to the state information so as to control the electric automobile to flameout;
the flameout condition of the manual fuel-oil-blocking vehicle comprises a flameout condition of the manual fuel-oil-blocking vehicle during driving;
accordingly, the process of setting the flameout condition of the electric vehicle includes:
in the running process of the electric automobile, if the rotating speed of the motor is detected to be less than a preset flameout maximum rotating speed threshold value and the duration time reaches a fifth time, determining that the electric automobile meets a flameout condition; wherein the fifth time is positively correlated with the motor speed.
9. The utility model provides a manual fender fires oil vehicle flame-out analogue means which characterized in that includes:
a memory for storing a computer program;
processor for implementing the steps of the method for simulating a manual fuel cut shut-off of a vehicle according to any one of claims 1 to 7 when executing said computer program.
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| CN113320398B (en) * | 2021-03-26 | 2023-05-12 | 联合汽车电子有限公司 | Whole vehicle flameout working condition driving motor protection method, module and system |
| CN113071331B (en) * | 2021-04-22 | 2022-04-29 | 神龙汽车有限公司 | Method for simulating shaking and flameout of electric and manual shift instruction car |
| CN114834264B (en) * | 2022-04-20 | 2025-03-25 | 江苏涵润汽车电子有限公司 | Automobile control method, system, storage medium and vehicle |
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