WO2020258601A1 - Procédé et appareil de commande de sortie de puissance de moteur - Google Patents

Procédé et appareil de commande de sortie de puissance de moteur Download PDF

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Publication number
WO2020258601A1
WO2020258601A1 PCT/CN2019/111862 CN2019111862W WO2020258601A1 WO 2020258601 A1 WO2020258601 A1 WO 2020258601A1 CN 2019111862 W CN2019111862 W CN 2019111862W WO 2020258601 A1 WO2020258601 A1 WO 2020258601A1
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WO
WIPO (PCT)
Prior art keywords
conditioning system
speed
threshold
target vehicle
cut
Prior art date
Application number
PCT/CN2019/111862
Other languages
English (en)
Chinese (zh)
Inventor
杨德凤
Original Assignee
奇瑞汽车股份有限公司
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Publication date
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Publication of WO2020258601A1 publication Critical patent/WO2020258601A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/10—Accelerator pedal position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
    • B60W2555/40—Altitude

Definitions

  • the invention relates to the field of automobile electronic control, and in particular to a method and device for controlling the power output of an engine.
  • the non-independent air conditioning system in the car is directly driven by the driving power of the car.
  • This type of car only needs an engine, but because the engine mainly drives the car to travel, there is not much power reserved for the air conditioning system And the air-conditioning system generally consumes 10%-15% of the engine's power, which will directly affect the acceleration performance of the car, and then affect the comfort of the car.
  • the non-independent air conditioning systems in automobiles are mostly replaced with independent air conditioning systems.
  • the car is equipped with a special engine to drive the operation of the air conditioner, which can operate independently, will not conflict with the power part of the car, and can ensure the driving comfort of the car.
  • a car equipped with an independent air-conditioning system needs two engines, which greatly increases fuel consumption, high engineering costs, high repair and maintenance costs, and difficulty. Moreover, the design and installation of dual engines will increase the frequency of failures.
  • the embodiment of the present invention provides a method and device for controlling the power output of an engine, which can control the power output of the engine to the air conditioning system in real time, thereby improving the comfort of driving of the vehicle.
  • the technical scheme of the present invention is as follows:
  • a control method of engine power output includes:
  • the selectable gear of the target vehicle determines the selectable gear of the target vehicle, wherein the selectable gear includes at least one of all forward gears in the target vehicle
  • shutting off the air conditioning system of the target vehicle includes:
  • the target vehicle is cut off Air conditioning system.
  • the method further includes:
  • the method further includes:
  • the air conditioning system of the target vehicle is cut off.
  • the cutting off the air conditioning system of the target vehicle includes:
  • the air-conditioning system When the continuous cut-off time of the air-conditioning system is greater than the first cut-off time period, the air-conditioning system is sucked in after the continuous cut-off time reaches the first cut-off time period.
  • the cutting off the air conditioning system of the target vehicle further includes:
  • the cut-off state of the air-conditioning system is maintained, and the air-conditioning system is sucked in after the continuous cut-off time reaches the second cut-off time period.
  • the cutting off the air conditioning system of the target vehicle further includes:
  • An embodiment of the present application also provides a control device for engine power output, and the control device includes:
  • the first determining module is configured to determine the selectable gear of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle, wherein the selectable gear includes the target At least one of all forward gears in the vehicle;
  • a second determination module configured to obtain the torque loss of the air conditioning system, and determine the driver demand torque of the target vehicle according to the selectable gear
  • the cut-off module is configured to cut off the air-conditioning system of the target vehicle when the sum of the torque required by the driver and the torque loss of the air-conditioning system is greater than a torque threshold, and the engine speed is greater than the speed threshold.
  • the cutting module includes:
  • a comparing unit configured to obtain the vehicle speed of the target vehicle, and compare the vehicle speed with the first speed threshold
  • the first cut-off unit is configured to, if the vehicle speed is not greater than a first speed threshold, when the sum of the driver demand torque and the torque loss of the air conditioning system is greater than the first torque threshold, and the engine speed is greater than the first Cut off the air conditioning system of the target vehicle when the speed threshold is reached;
  • the second cut-off unit is configured to, if the vehicle speed is greater than the first speed threshold, when the sum of the driver demand torque and the torque loss of the air conditioning system is greater than the second torque threshold, and the engine speed is greater than the second speed Threshold, cut off the air conditioning system of the target vehicle,
  • the first torque threshold is less than the second torque threshold, and the first rotational speed threshold is less than the second rotational speed threshold.
  • the driver can set the threshold of the altitude coefficient according to the geographical location of the target vehicle, and can determine the optional gear of the target vehicle according to the altitude coefficient and intake air temperature, so that on the one hand, the speed of the target vehicle can be controlled, and the other
  • the threshold of the altitude coefficient can be set lower, so that when the driver is driving on a plateau, the speed of the vehicle is not easy to control.
  • the threshold of the altitude coefficient can be changed by the driver, so that the method can be adapted to different driving situations.
  • the driver's required torque is determined according to the gear selected by the driver, and the sum of the driver's required torque of the target vehicle and the loss torque of the air-conditioning system can be used to determine whether to cut off the air-conditioning system, so that the air-conditioning system can operate under different driving conditions. More suitable for the needs of drivers. Thresholds are set for the sum of the driver's required torque and the torque loss of the air-conditioning system and the engine speed. When the driver needs to accelerate, and the sum of the driver's required torque and the torque loss of the air-conditioning system and the engine speed exceed their corresponding When the threshold is set, the power of the engine occupied by the operation of the air conditioning system can be reduced, thereby improving the comfort of the vehicle during driving.
  • Fig. 1 is a flowchart of an implementation manner of a method for controlling engine power output provided by an embodiment of the application;
  • FIG. 3 is a flowchart of another implementation manner when the vehicle speed is not greater than a first speed threshold in the method for controlling engine power output provided by an embodiment of this application;
  • 5 is a flowchart of another implementation manner when the vehicle speed is not greater than the first speed threshold in the method for controlling the power output of the engine provided by the embodiment of the application;
  • FIG. 6 is a flowchart of another implementation manner when the vehicle speed is greater than the first speed threshold in the method for controlling the power output of an engine provided by an embodiment of the application;
  • FIG. 7 is a flowchart of another implementation manner when the vehicle speed is greater than the first speed threshold in the method for controlling the power output of an engine provided by an embodiment of the application;
  • FIG. 8 is a block diagram of a control device for engine power output provided by an embodiment of the application.
  • FIG. 9 is a block diagram of an implementation manner of the cut-off module in the engine power output control device provided by an embodiment of the application.
  • Fig. 10 is a block diagram of another implementation of the cut-off module in the engine power output control device provided by an embodiment of the application.
  • the embodiment of the present application provides a method for controlling the power output of an engine.
  • the control method includes:
  • Step S101 Determine the selectable gear of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle, where the selectable gear includes at least one of all forward gears in the target vehicle.
  • the driver can Set the altitude coefficient of the location of the target vehicle. For example, when the altitude of the vehicle is below 2000 meters, the driver can choose any of all forward gears; when the target vehicle is in a geographical location with a higher altitude such as a small plateau, the driver can only choose Drive in the lower gear of the forward gears. In this way, the driving speed of the vehicle can be restricted to a certain extent, so as to prevent the driver's ability to control the speed of the vehicle from being reduced when the vehicle is at a higher altitude, which will affect the safety of the vehicle.
  • the difference in the intake air temperature of the target vehicle will also affect the power output of the engine.
  • the intake air temperature of the vehicle is about 30°C. Therefore, the driver can set the intake air temperature threshold of the target vehicle to 30°C. And the driver can set multiple thresholds for the altitude coefficient. For example, when the intake air temperature of the target vehicle is greater than 30°C and the altitude of the location of the target vehicle is lower than the first threshold, the driver can select any of all forward gears. When the intake air temperature of the target vehicle is greater than 30°C and the altitude is higher than the first threshold and less than the second threshold, the driver can select any gear from 1-4 gears. When the intake air temperature of the target vehicle is greater than 30°C, and the altitude is higher than the second threshold and less than the third threshold, the driver can select any one of 1-3 gears.
  • the values of the first threshold, the second threshold, and the third threshold can be increased successively, and the specific values of the first threshold, the second threshold and the third threshold can be set independently by the driver, or the performance parameters of the target vehicle itself control.
  • different drivers can set them according to their own needs and conditions.
  • Step S102 Obtain the torque loss of the air conditioning system, and determine the driver's required torque of the target vehicle according to the gear selected by the driver.
  • the torque required by the driver is equivalent to the speed required by the driver, and the speed of the vehicle will be restricted by the gear position. Therefore, the gear position selected by the driver is in a certain range. The degree reflects the driver's demand torque.
  • the power for the operation of the air conditioning system is provided by the engine, so the air conditioning system consumes a certain proportion of the power of the engine. According to the torque loss generated by the operation of the air conditioning system and the torque required by the driver, the power required by the engine can be more accurately known.
  • step S103 when the sum of the driver's required torque and the torque loss of the air conditioning system is greater than the torque threshold, and the engine speed is greater than the speed threshold, the air conditioning system of the target vehicle is cut off.
  • the manufacturer or the driver may set the torque threshold in advance for the sum of the driver's required torque and the torque loss of the air conditioning system, and set the speed threshold for the engine speed.
  • the sum of the torque required by the driver and the torque loss of the air-conditioning system and the engine speed together reflect to a certain extent the power that the engine needs to provide.
  • both are greater than their corresponding thresholds, that is, the power that the engine needs to provide exceeds A certain threshold value, in order to avoid excessive engine pressure, can cut off the air conditioning system of the target vehicle, reduce the power consumed by the air conditioning system, and then reduce the overall output power of the engine, so that the engine can provide power for vehicle acceleration as much as possible, and improve vehicle travel The comfort.
  • control method may include:
  • Step S201 Determine the selectable gear of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle.
  • Step S202 Obtain the torque loss of the air conditioning system, and determine the driver's required torque of the target vehicle according to the gear selected by the driver.
  • Step S203 Calculate the sum of the torque required by the driver and the torque loss of the air conditioning system.
  • Step S204 Obtain the vehicle speed and engine speed of the target vehicle.
  • Step S205 Determine whether the speed of the target vehicle is less than a first speed threshold. If yes, go to step S208, otherwise go to step S206.
  • the driver may set a threshold value for the vehicle speed of the target vehicle in advance.
  • the first speed threshold may be 30km/h, so that when the vehicle speed is obtained, it can be compared with the first speed threshold to know whether the target vehicle is currently driving at a low speed or a high speed.
  • the specific value of the first speed threshold can be set independently by the driver according to his own habits, or can be set according to the performance parameters of the target vehicle.
  • step S206 it is determined whether the sum of torques is greater than the first torque threshold. If yes, go to step S207, otherwise go to step S211.
  • Step S207 Determine whether the engine speed is greater than the first speed threshold. If yes, go to step S210, otherwise go to step S211.
  • step S208 it is determined whether the sum of torques is greater than the second torque threshold. If yes, go to step S209, otherwise go to step S211.
  • Step S209 Determine whether the engine speed is greater than the second speed threshold. If yes, go to step S210, otherwise go to step S211.
  • Step S210 cut off the air conditioning system of the target vehicle.
  • Step S211 end the operation.
  • the vehicle speed of the target vehicle is compared with the first speed threshold, so as to know whether the current vehicle is traveling at a low speed or a high speed.
  • the first torque threshold may be different from the second torque threshold, and the first speed threshold may be different from the second speed threshold. In this way, setting different torque thresholds and speed thresholds for different vehicle speeds can make the control method more suitable The needs of the driver in different situations are more in line with the performance of the target vehicle itself.
  • the numerical values can be set independently according to the driver’s own habits or according to the target The performance parameters of the vehicle are set.
  • control method may include:
  • Step S301 Determine the selectable gear of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle.
  • Step S302 Obtain the vehicle speed, engine speed and accelerator pedal opening of the target vehicle.
  • Step S303 Determine whether the speed of the target vehicle is greater than a first speed threshold. If not, step S304 is executed.
  • Step S304 Determine whether the engine speed of the target vehicle is greater than a third speed threshold. If yes, go to step S305, otherwise go to step S309.
  • Step S305 Determine whether the engine speed of the target vehicle is less than a fourth speed threshold. If yes, go to step S306, otherwise go to step S307.
  • Step S306 Determine whether the accelerator pedal opening of the target vehicle is greater than the first opening threshold. If yes, go to step S308, otherwise go to step S309.
  • Step S307 Determine whether the accelerator pedal opening of the target vehicle is greater than the second opening threshold. If yes, go to step S308, otherwise go to step S309.
  • Step S309 end the operation.
  • the vehicle speed is not greater than the first speed threshold, it can be determined whether to cut off the air conditioning system of the target vehicle according to the engine speed and the opening degree of the accelerator pedal.
  • the accelerator pedal opening refers to the depth produced by the driver stepping on the accelerator.
  • the third rotational speed threshold, the fourth rotational speed threshold, and the first opening threshold may be 900rpm, 1000rpm, 40%, 1000rpm, 1400rpm, 50%, and 1400rpm, 2000rpm, 60%. One of them.
  • the second opening threshold may be 70%.
  • the fourth speed threshold at this time is 1000 rpm.
  • the 1000 rpm at this time becomes the third speed threshold, and the corresponding fourth speed threshold at this time is 1400 rpm.
  • the 1400 rpm at this time becomes the third speed threshold, and the corresponding fourth speed threshold at this time is 2000 rpm.
  • steps S305 and S306 may specifically include the following sub-steps:
  • Step S3051 Determine whether the engine speed of the target vehicle is less than the first sub-value of the fourth speed threshold. If yes, go to step S3061, otherwise go to step S307.
  • Step S3052 Determine whether the engine speed of the target vehicle is less than the second sub-value of the fourth speed threshold. If yes, go to step S3062, otherwise go to step S307.
  • Step S3053 It is determined whether the engine speed of the target vehicle is less than the third sub-value of the fourth speed threshold. If yes, go to step S3063, otherwise go to step S307.
  • the values of the first sub-value of the fourth rotational speed threshold, the second sub-value of the fourth rotational speed threshold, and the third sub-value of the fourth rotational speed threshold are successively increased.
  • Step S3061 Determine whether the accelerator pedal opening of the target vehicle is greater than the first sub-value of the first opening threshold. If yes, go to step S308, otherwise go to step S309.
  • Step S3062 Determine whether the accelerator pedal opening of the target vehicle is greater than the second sub-value of the first opening threshold. If yes, go to step S308, otherwise go to step S309.
  • Step S3063 Determine whether the accelerator pedal opening of the target vehicle is greater than the third sub-value of the first opening threshold. If yes, go to step S308, otherwise go to step S309.
  • the values of the first sub-value of the first opening degree threshold, the second sub-value of the first opening degree threshold, and the third sub-value of the first opening degree threshold are successively increased.
  • the fourth rotational speed threshold may further include more sub-values.
  • the setting of the third rotational speed threshold, the fourth rotational speed threshold, and the first opening threshold in the present application is not limited to the above-mentioned values.
  • the driver can set according to his own habits or the vehicle's The performance parameters independently set specific values of the third rotational speed threshold, the fourth rotational speed threshold, the first opening threshold and the second opening threshold.
  • control method may include:
  • Step S501 Determine the selectable gear of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle.
  • Step S502 Obtain the torque loss of the air conditioning system, and determine the driver's required torque according to the gear selected by the driver.
  • Step S503 Calculate the sum of the torque required by the driver and the torque loss of the air conditioning system.
  • Step S504 Obtain the vehicle speed, engine speed, and accelerator pedal opening of the target vehicle.
  • step S504 may also be executed before step S501.
  • Step S505 Determine whether the vehicle speed is greater than a first speed threshold. If not, step S506 is executed.
  • step S506 it is determined whether the sum of the torques is greater than the first torque threshold. If yes, go to step S507, otherwise go to step S508.
  • Step S507 Determine whether the engine speed is greater than the first speed threshold. If yes, go to step S512, otherwise go to step S508.
  • Step S508 Determine whether the engine speed is greater than the third speed threshold. If yes, go to step S509, otherwise go to step S513.
  • Step S509 Determine whether the engine speed is less than the fourth speed threshold. If yes, go to step S510, otherwise go to step S511.
  • step S407 and step S408 are the same as the process of step S307 and step S308 described above, so it is not explained here.
  • Step S510 Determine whether the accelerator pedal opening degree is greater than the first opening degree threshold. If yes, go to step S512, otherwise go to step S513.
  • step S511 it is determined whether the rate of change of the accelerator pedal opening degree is greater than the second opening degree threshold. If yes, go to step S512, otherwise go to step S513.
  • Step S512 cut off the air conditioning system of the target vehicle.
  • steps S508-S511 can also be executed before step S506, that is, when the judgment result of any one of steps S508, S510, and S511 is negative, step S506 can be executed again. Whether it is necessary to cut off the air conditioning system. And when the judgment result of steps S506 and S507 is no, step S513 can be directly executed.
  • control method may include:
  • Step S601 Determine the selectable gear of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle.
  • Step S602 Obtain the vehicle speed, engine speed, and accelerator pedal opening of the target vehicle.
  • Step S603 Determine whether the speed of the target vehicle is less than a first speed threshold. If not, step S604 is executed.
  • Step S604 Determine whether the engine speed is greater than a fifth speed threshold. If yes, go to step S605, otherwise go to step S606.
  • Step S605 Determine whether the accelerator pedal opening degree is greater than the fourth opening degree threshold. If yes, go to step S608, otherwise go to step S607.
  • Step S606 Determine whether the accelerator pedal opening degree is greater than the third opening degree threshold. If yes, go to step S608, otherwise go to step S607.
  • step S607 it is determined whether the rate of change of the accelerator pedal opening is less than the first change threshold. If yes, go to step S609, otherwise go to step S608.
  • Step S608 cut off the air conditioning system of the target vehicle.
  • Step S609 the operation ends.
  • the fifth rotational speed threshold may be set to 3000 rpm
  • the third opening threshold may be set to 80%
  • the fourth opening threshold may be set to 90%
  • the first The change threshold is set to 5%/10ms.
  • the air conditioning system of the target vehicle is cut off.
  • the present application is not limited to the above-mentioned values. In other implementations of the embodiments of the present application, it can be set according to driving The user’s habits or the performance parameters of the target vehicle itself are set.
  • step S607 may also be executed before step S604.
  • step S604 is executed to judge whether the air conditioning system needs to be shut off again.
  • step S609 is executed.
  • control method may include:
  • Step S701 Determine the selectable gear of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle.
  • Step S702 Obtain the torque loss of the air conditioning system, and determine the driver's required torque according to the gear selected by the driver.
  • Step S403 Calculate the sum of the torque required by the driver and the torque loss of the air conditioning system.
  • Step S704 Obtain the vehicle speed, engine speed, and accelerator pedal opening of the target vehicle.
  • step S704 can also be executed before step S701.
  • Step S705 Determine whether the vehicle speed is greater than the first speed threshold. If yes, step S706 is executed.
  • step S706 it is determined whether the sum of the torques is greater than the second torque threshold. If yes, go to step S707, otherwise go to step S708.
  • Step S707 Determine whether the engine speed is greater than the second speed threshold. If yes, go to step S712, otherwise go to step S708.
  • Step S708 Determine whether the engine speed is greater than the fifth speed threshold. If yes, go to step S709, otherwise go to step S710.
  • Step S709 Determine whether the accelerator pedal opening degree is greater than the fourth opening degree threshold. If yes, go to step S412, otherwise go to step S711.
  • Step S710 Determine whether the accelerator pedal opening degree is greater than the third opening degree threshold. If yes, go to step S712, otherwise go to step S711.
  • step S711 it is determined whether the rate of change of the accelerator pedal opening degree is greater than the first change threshold. If yes, go to step S712, otherwise go to step S713.
  • Step S712 cut off the air conditioning system of the target vehicle.
  • Step S713 the operation ends.
  • step S706 or S707 when the judgment result of step S706 or S707 is no, step S706 or S707 can also be executed first. S711, if the judgment result of step S711 is also no, step S708 is executed again. Alternatively, when the judgment result of step S705 is yes, step S708 or S711 may be executed first. When the judgment results of steps S706-S711 are all no, step S713 is executed. If the judgment result of any one of steps S707, S709, S710 and S711 is yes, step S712 is executed. In this way, by performing multiple comprehensive judgments in different aspects, the result of judging whether the air conditioning system needs to be cut off can be more accurate.
  • the air-conditioning system when the continuous cut-off time of the air-conditioning system is greater than the first cut-off time period, the air-conditioning system is automatically sucked in after the continuous cut-off time reaches the first cut-off time period.
  • the air-conditioning system when the conditions for cutting off the air-conditioning system always exist, the air-conditioning system will not always be in the cut-off state.
  • the duration of the cut-off state reaches the first cut-off period, the air-conditioning system is automatically closed to make the air-conditioning system operate and regulate the interior of the vehicle. To avoid long-term interruption of the operation of the air-conditioning system and affect the temperature in the vehicle interior.
  • the first cut-off duration is the longest cut-off time of the air-conditioning system.
  • the air-conditioning system is automatically closed, which can better meet the needs of the driver.
  • the time for the driver to slam on the accelerator is very short, that is, the duration of meeting the conditions for cutting off the air conditioning system is very short.
  • the system performs a cut-off operation to maintain the disconnected state of the air-conditioning system.
  • the air-conditioning system is automatically closed.
  • the pull-in state of the air-conditioning system is maintained, and after the continuous pull-in time reaches the first pull-in duration, cut off Air Conditioning System.
  • the suction is maintained. After the closed state reaches the first pull-in time, it responds to the cut-off request.
  • the first cutting time period may be 15s
  • the second cutting time period may be 5s
  • the first pull-in time period may be 5s.
  • the air conditioning system can perform 5s ⁇ cut-off duration ⁇ 15s ⁇ switch-on duration ⁇ 5s ⁇ 5s ⁇ cut-off duration ⁇ 15s ⁇ switch-on duration ⁇ 5s ⁇ 5s ⁇ cutting time ⁇ 15s ⁇ switching time ⁇ 5s cycle. This can prevent the air-conditioning system from cutting off and closing operations too quickly to damage the operation of the air-conditioning system. It can also reduce the engine power occupied by the air-conditioning system as much as possible, improve the driving comfort of the vehicle, and ensure the appropriate indoor temperature.
  • the setting of the maximum disconnection time, the shortest disconnection time, and the shortest pull-in time of the air conditioning system in this application is not limited to the above-mentioned values.
  • the first disconnection time of the air conditioning system , The specific values of the second cut-off duration and the first pull-in duration can be set according to the driver’s habits or the performance parameters of the target vehicle.
  • the control method can be applied to the same driver or/and different vehicles.
  • the same driver can set different thresholds for different vehicles, and different drivers can also set different thresholds for the same target vehicle.
  • control device for engine power output.
  • the control device includes:
  • the first determining module 801 is configured to determine the selectable gears of the target vehicle according to the altitude coefficient of the location of the target vehicle and the intake air temperature of the target vehicle, wherein the selectable gears include all forward gears in the target vehicle At least one of
  • the second determination module 802 is configured to obtain the torque loss of the air conditioning system, and determine the driver's required torque of the target vehicle according to the selectable gears;
  • the cut-off module 803 is configured to cut off the air-conditioning system of the target vehicle when the sum of the torque required by the driver and the torque loss of the air-conditioning system is greater than the torque threshold, and the engine speed is greater than the speed threshold.
  • the cut-off module may include:
  • the comparing unit 8031 is configured to obtain the vehicle speed of the target vehicle, and compare the vehicle speed with a first speed threshold;
  • the first cut-off unit 8032 is configured to cut off the target vehicle if the vehicle speed is not greater than the first speed threshold, when the sum of the driver demand torque and the torque loss of the air conditioning system is greater than the first torque threshold, and the engine speed is greater than the first speed threshold Air conditioning system;
  • the second cut-off unit 8033 is configured to cut off the target vehicle when the vehicle speed is greater than the first speed threshold, when the sum of the driver's demand torque and the torque loss of the air-conditioning system is greater than the second torque threshold, and the engine speed is greater than the second speed threshold.
  • Air Conditioning System Air Conditioning System.
  • the first cut-off unit 8032 may also be configured to, if the vehicle speed is not greater than the first speed threshold, when the engine speed is greater than the third speed threshold and not less than the fourth speed threshold, and When the accelerator pedal opening is not less than the first opening threshold, the air conditioning system of the target vehicle is cut off.
  • the first cut-off unit 8032 is further configured to cut off the air conditioning system of the target vehicle when the engine speed is greater than the fifth speed threshold and the accelerator pedal opening is greater than the second opening threshold .
  • the third rotational speed threshold, the fourth rotational speed threshold, and the first opening threshold may be 900 rpm, 1000 rpm, 40%, 1000 rpm, 1400 rpm, 50%, 1400 At least one of rpm, 2000 rpm, and 60%, the fifth rotational speed threshold may be 2000 rpm, and the second opening degree threshold may be 70%.
  • the second cut-off unit 8033 is further configured to, if the vehicle speed is greater than the first speed threshold, when the engine speed is not greater than the fifth speed threshold, and the accelerator pedal opening is greater than the first speed threshold.
  • the threshold of three degrees of opening cut off the air conditioning system of the target vehicle, or,
  • the air conditioning system of the target vehicle is cut off.
  • the fifth rotational speed threshold can be set to 3000 rpm
  • the third opening threshold can be set to 80%
  • the fourth opening threshold can be set to 90%
  • the first change threshold Can be set to 5%/10ms.
  • the cutting module 803 may further include:
  • the pull-in unit 8034 is configured to pull in the air-conditioning system when the continuous cut-off time of the air-conditioning system is greater than the first cut-off time period, after the continuous cut-off time reaches the first cut-off time period, and is also configured to pull in the air-conditioning system when the air-conditioning system is cut off continuously.
  • the time is less than the second cut-off time period, the air-conditioning system is maintained in the cut-off state, and after the continuous cut-off time reaches the second cut-off time period, the air-conditioning system is sucked in.
  • the cut-off module 803 is further configured to maintain the suction state of the air conditioning system when the continuous pull-in time of the air-conditioning system is not greater than the first pull-in time. After reaching the first pull-in duration, the air conditioning system is cut off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

La présente invention concerne un procédé de commande de sortie de puissance de moteur comprenant les étapes consistant à : déterminer un rapport sélectionnable d'un véhicule cible en fonction d'un coefficient d'altitude de la position de véhicule cible et d'une température d'air d'admission du véhicule cible, le rapport sélectionnable comprenant au moins l'un de tous les rapports de marche avant du véhicule cible ; acquérir une perte de couple d'un système de climatisation, et déterminer un couple requis par un conducteur du véhicule cible selon un rapport sélectionné par le conducteur ; et lorsque la somme du couple requis par le conducteur et de la perte de couple du système de climatisation est supérieure à un seuil de couple, et lorsqu'un régime moteur est supérieur à un seuil de régime, éteindre le système de climatisation du véhicule cible. Le procédé commande la sortie de puissance du moteur au système de climatisation en temps réel, ce qui permet d'améliorer le confort de conduite. La présente invention concerne également un appareil de commande de sortie de puissance de moteur.
PCT/CN2019/111862 2019-06-26 2019-10-18 Procédé et appareil de commande de sortie de puissance de moteur WO2020258601A1 (fr)

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