WO2021169760A1 - 一种可变截面涡轮增压器的控制方法、装置及车辆 - Google Patents

一种可变截面涡轮增压器的控制方法、装置及车辆 Download PDF

Info

Publication number
WO2021169760A1
WO2021169760A1 PCT/CN2021/075112 CN2021075112W WO2021169760A1 WO 2021169760 A1 WO2021169760 A1 WO 2021169760A1 CN 2021075112 W CN2021075112 W CN 2021075112W WO 2021169760 A1 WO2021169760 A1 WO 2021169760A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle ring
engine
preset
self
cleaning operation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/075112
Other languages
English (en)
French (fr)
Inventor
谭振东
晏双鹤
王岩
黄松
刘云辉
杨金鹏
陈海岩
韩广华
谷凌志
赵普天
董清泉
顾亚松
戴保绅
张召
胡宇辰
谷建毅
侯文浩
付东波
俞杰
王伟
张德胜
肖姗姗
张鹏
尚运
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Great Wall Motor Co Ltd
Original Assignee
Great Wall Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Great Wall Motor Co Ltd filed Critical Great Wall Motor Co Ltd
Publication of WO2021169760A1 publication Critical patent/WO2021169760A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/002—Cleaning of turbomachines
    • 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
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present disclosure relates to the field of automobile technology, and in particular to a control method, device and vehicle of a variable-section turbocharger.
  • VHT Variable Geometry Turbocharger
  • VGT has no bypass valve setting.
  • the exhaust gas sucked in directly passes through the turbine, and a set of nozzles that can change the section of the turbine chamber inlet and the blowing direction of the intake air are installed in the volute. ⁇ Ring device.
  • the nozzle ring device can adjust the angle according to the different exhaust flow to obtain the maximum energy, and drive the compressor through the concentric shaft to force the fresh air into the cylinder to increase the air intake and fuel injection volume of the cylinder, thereby making The unit cylinder volume can produce more power.
  • the present disclosure aims to provide a control method, device and vehicle for a variable-section turbocharger, so as to solve the problem that the variable-section turbocharger in the prior art is prone to sticking due to carbon deposits. The problem.
  • a method for controlling a variable area turbocharger is applied to a vehicle, the vehicle includes an engine with a variable area turbocharger, the variable area turbocharger includes a nozzle ring, wherein the method includes:
  • the self-cleaning operation includes controlling the nozzle ring to switch a preset number of times between a fully open state and a fully closed state according to a preset frequency.
  • controlling the nozzle ring to perform a self-cleaning operation includes:
  • control the nozzle ring to perform the self-cleaning operation when the engine reaches a deceleration and fuel cut-off condition
  • the nozzle is controlled when the engine speed is less than a preset speed threshold and the engine torque is less than a first preset torque threshold The ring performs the self-cleaning operation.
  • controlling the nozzle ring to perform a self-cleaning operation includes:
  • the cooling water temperature is greater than a preset temperature threshold, and the rotation speed of the engine is less than a second preset rotation speed threshold, the nozzle ring is controlled to perform the self-cleaning operation.
  • the method further includes:
  • controlling the nozzle ring to perform a self-cleaning operation includes:
  • the engine If the engine is currently in operation and no nozzle ring jam failure has been detected, and after the engine is in operation, the execution times of the self-cleaning operation have not reached the execution times threshold, then the engine will decelerate When the oil is cut off, the nozzle ring is controlled to perform the self-cleaning operation.
  • the vehicle stores a preset upper limit of opening for the fully open state and a preset lower limit for the opening of the fully closed state; in the acquisition Before the target state information of the engine, it also includes:
  • the method further includes: diagnosing whether the nozzle ring has a nozzle ring jamming fault;
  • Another object of the present disclosure is to provide a control device for a variable-section turbocharger, which is applied to a vehicle.
  • the vehicle includes an engine with a variable-section turbocharger, and the variable-section turbocharger includes A nozzle ring, wherein the device includes:
  • the first acquisition module is configured to acquire target state information of the engine, where the target state information is related to the engine state;
  • a control module configured to control the nozzle ring to perform a self-cleaning operation when the target state information meets a preset condition
  • the self-cleaning operation includes controlling the nozzle ring to switch a preset number of times between a fully open state and a fully closed state according to a preset frequency.
  • control module includes:
  • the first control unit is configured to control the nozzle ring to perform the self-cleaning operation when the engine reaches the deceleration and fuel cut-off condition if the engine is currently running and the nozzle ring jam failure is not detected;
  • the second control unit is configured to, if the engine is currently in operation and a nozzle ring jam fault is detected, the engine speed is less than a first preset speed threshold, and the engine torque is less than the preset torque When the threshold is set, the nozzle ring is controlled to perform the self-cleaning operation.
  • control module includes:
  • the third control unit is configured to control the nozzle ring to execute the engine when the shutdown signal for the engine is detected, the cooling water temperature is greater than the preset temperature threshold, and the engine speed is less than the second preset rotational speed threshold. Describe the self-cleaning operation.
  • control device further includes:
  • the first prompt information module is configured to generate a stuck fault prompt message if the stuck fault of the nozzle ring is not eliminated after the nozzle ring is controlled to perform the self-cleaning operation.
  • the vehicle stores a preset upper limit of opening for the fully open state and a preset lower limit for the opening of the fully closed state;
  • the control device also includes:
  • the second acquisition module is configured to acquire the current upper limit value of the opening degree and the current lower limit value of the opening degree of the nozzle ring when the start signal for the engine is detected;
  • the confirmation module is configured to confirm the entry to the office when the current upper limit of opening is equal to the preset upper limit of opening, and the current lower limit of opening is equal to the preset lower limit of opening. The step of acquiring the target state information of the engine;
  • the second prompt information module is configured to: when the current upper limit of opening is not equal to the preset upper limit of opening, and/or the current lower limit of opening is not equal to the preset lower limit of opening When the value is set, a stuck fault prompt message is generated.
  • control method and device of the variable cross-section turbocharger described in the present disclosure have the following advantages:
  • the nozzle ring By acquiring target state information related to the engine state in the engine, and when the target state information meets a preset condition, control the nozzle ring to perform a self-cleaning operation; wherein, the self-cleaning operation includes performing a self-cleaning operation at a preset frequency , Controlling the nozzle ring to switch a preset number of times between the fully open state and the fully closed state. That is, by controlling the nozzle ring to switch between the fully open state and the fully closed state for a preset number of times according to a preset frequency, the drastic changes in the opening of the nozzle ring are used to generate jitter, thereby removing the carbon deposits attached to the nozzle ring.
  • Another object of the present disclosure is to provide a vehicle that includes an engine with a variable-section turbocharger, and the variable-section turbocharger includes a nozzle ring, wherein the vehicle further includes the Variable area turbocharger control device.
  • the vehicle has the same advantages as the above-mentioned variable-section turbocharger control method and device compared with the prior art, and will not be repeated here.
  • the present disclosure also provides a computing processing device, including:
  • a memory in which computer-readable codes are stored
  • One or more processors when the computer-readable code is executed by the one or more processors, the computing processing device executes the above-mentioned control method.
  • the present disclosure also provides a computer program, including computer readable code, which when the computer readable code runs on a computing processing device, causes the computing processing device to execute the above-mentioned control method.
  • the present disclosure also provides a computer-readable medium in which the above-mentioned computer program is stored.
  • FIG. 1 is a schematic flow chart of a control method of a variable cross-section turbocharger proposed by an embodiment of the disclosure
  • FIG. 2 is a schematic flow chart of a control method of a variable cross-section turbocharger proposed in a preferred embodiment of the present disclosure
  • FIG. 3 is an execution flow chart of the control method of the variable cross-section turbocharger proposed by the embodiment of the disclosure
  • Fig. 4 is a schematic structural diagram of a control device for a variable cross-section turbocharger proposed by an embodiment of the present disclosure
  • Fig. 5 schematically shows a block diagram of a computing processing device for executing the method according to the present disclosure.
  • Fig. 6 schematically shows a storage unit for holding or carrying program codes for implementing the method according to the present disclosure.
  • FIG. 1 shows a schematic flowchart of a method for controlling a variable-section turbocharger provided by an embodiment of the present disclosure, which is applied to a vehicle, and the vehicle includes an engine with a variable-section turbocharger,
  • the variable area turbocharger includes a nozzle ring, and the method includes steps S100 to S200.
  • step S100 because the self-cleaning operation of the nozzle ring will affect the air intake of the engine, that is, it will affect the power output of the engine, that is, it will affect the operation of the vehicle. Therefore, it is necessary to obtain the The current state of the engine; and the engine has different operating data in different states, so the current state of the engine can be determined through the target state information related to the engine state to determine whether the current state of the engine allows the nozzle ring to execute Self-cleaning operation.
  • the above-mentioned target state information includes the start signal, shutdown signal, speed, torque, throttle state, brake state, cooling water temperature, operating time and other information for the engine.
  • the current state of the engine can be judged through the above data. It then determines whether the self-cleaning operation of the nozzle ring is currently allowed.
  • the above-mentioned target state information also includes nozzle ring jamming fault information, so as to determine whether Need to control the nozzle ring to perform self-cleaning operation.
  • Step S200 When the target state information meets a preset condition, control the nozzle ring to perform a self-cleaning operation; the self-cleaning operation includes controlling the nozzle ring to be in a fully open state and a fully closed state at a preset frequency. Switch the preset number of times back and forth.
  • the preset condition refers to the operating parameter state of the engine that requires and allows the control of the nozzle ring to perform self-cleaning.
  • the above-mentioned target state information meets the above-mentioned preset conditions, it is determined that the current needs and the nozzle ring are operated for self-cleaning operation, so the nozzle ring is controlled to perform the self-cleaning operation, so as to complete the nozzle ring without affecting the normal driving of the vehicle. Clean.
  • step S200 specifically, by controlling the duty ratio of the electronic actuator according to the preset frequency, the nozzle ring opening is adjusted between 100% and 0% for a preset number of times, so as to realize the control of the nozzle ring in the fully open state and The effect of reciprocating switching preset times between fully closed states to complete the self-cleaning operation of the nozzle ring.
  • the above-mentioned self-cleaning operation utilizes the drastic change of the opening of the nozzle ring to generate jitter, thereby removing the carbon deposits attached to the nozzle ring, realizing the self-cleaning of the nozzle ring, and avoiding the jamming failure of the nozzle ring.
  • the nozzle ring when the nozzle ring is controlled to switch between the fully open state and the fully closed state for a preset number of times, you can first control the nozzle ring to enter the fully open state, then control the nozzle ring to enter the fully closed state, and then control the nozzle ring to enter It can be carried out in a fully open state; it can also be carried out by first controlling the nozzle ring to enter the fully closed state, then controlling the nozzle ring to enter the fully open state, and then controlling the nozzle ring to enter the fully closed state.
  • the above-mentioned preset frequency and preset times need to be set according to the specific combustion performance of the engine and the difficulty of the carbon deposit on the nozzle ring.
  • the above preset frequency and preset times are set as small as possible, so that the nozzle ring can use the minimum opening switching times and switching frequency to achieve the effect of cleaning the nozzle ring That is, the nozzle ring can use the minimum shaking frequency and the number of shaking to achieve the effect of shaking off carbon deposits, so as to minimize the damage to the nozzle ring caused by the self-cleaning operation described above, thereby extending the service life of the nozzle ring.
  • control method of the variable cross-section turbocharger described in the present disclosure has the following advantages:
  • the nozzle ring is controlled to perform a self-cleaning operation; wherein, the self-cleaning operation includes performing a self-cleaning operation at a preset frequency , Controlling the nozzle ring to switch a preset number of times between the fully open state and the fully closed state. That is, by controlling the nozzle ring to switch between the fully open state and the fully closed state for a preset number of times according to a preset frequency, the drastic changes in the opening of the nozzle ring are used to generate jitter, thereby removing the carbon deposits attached to the nozzle ring.
  • the self-cleaning of the nozzle ring is realized, the jamming failure of the nozzle ring is avoided, and the problem that the variable-section turbocharger in the prior art is prone to jamming due to carbon deposits is solved.
  • the vehicle stores a preset upper limit of opening for the fully open state and a preset for the fully closed state.
  • Set the lower limit of the opening degree; the method further includes steps S101 to S103 before step S100.
  • the above preset upper limit of opening is the maximum opening value that can be reached when the nozzle ring is not stuck or other faults, that is, the maximum opening value that can be reached under normal conditions; and the preset lower limit of opening is in the nozzle
  • Step S101 When a start signal for the engine is detected, the current upper limit value of the opening degree and the current lower limit value of the opening degree of the nozzle ring are acquired.
  • the upper limit value and lower limit value of the opening degree that the nozzle ring can currently reach are obtained, that is, the upper limit value of the current degree of opening and the lower limit value of the current degree of opening can be obtained, Used to combine the preset upper limit of the opening degree and the preset lower limit of the opening degree to determine whether the nozzle ring is stuck when the engine is started.
  • the above-mentioned start signal may be a power-on signal for the engine.
  • Step S102 When the current upper limit of opening is equal to the preset upper limit of opening, and the current lower limit of opening is equal to the preset lower limit of opening, enter the acquisition location. Describe the steps of the target state information of the engine.
  • step S102 if the current upper limit of opening is equal to the preset upper limit of opening, and the current lower limit of opening is equal to the preset lower limit of opening, it means that the nozzle ring can be opened and closed normally.
  • the opening and closing state is affected by the adhesion of carbon deposits, so it can be determined that there is no jamming fault at present, and therefore, the step of obtaining the target state information of the engine can be entered normally, that is, step S100.
  • Step S103 when the current upper limit of opening is not equal to the preset upper limit of opening, and/or the current lower limit of opening is not equal to the preset lower limit of opening, generate Stuck failure prompt message.
  • step S103 if the current upper limit of opening is not equal to the preset upper limit of opening, and/or the current lower limit of opening is not equal to the preset lower limit of opening, it means that the nozzle ring cannot Normal opening and closing, that is, it can be determined that there is a stuck fault, so it is necessary to generate a stuck fault prompt message to remind the driver that the supercharger is abnormal.
  • step S200 includes step S201:
  • Step S201 If the engine is currently running and the nozzle ring jam failure is not detected, control the nozzle ring to perform the self-cleaning operation when the engine reaches a deceleration and fuel cut-off condition.
  • the jamming failure of the nozzle ring can be determined by monitoring the output power of the engine.
  • the aforementioned deceleration and fuel cut-off conditions are preset on the vehicle to trigger the engine to perform deceleration and fuel cut-off operations.
  • the deceleration and fuel cut-off conditions may specifically be Including the engine speed is greater than or equal to the deceleration cut-off speed threshold, and the accelerator pedal pedal angle is 0, and no braking action is detected.
  • the self-cleaning operation of the nozzle ring can be performed by using the process of the engine to perform the deceleration and fuel cut operation, and the nozzle ring can be adjusted on the premise of the normal operation of the engine. Clean up the carbon deposits to prevent it from causing jamming of the nozzle ring and ensure the normal operation of the turbocharger.
  • step S201 specifically includes:
  • the engine If the engine is currently in operation and no nozzle ring jam failure has been detected, and after the engine is in operation, the execution times of the self-cleaning operation have not reached the execution times threshold, then the engine will decelerate When the oil is cut off, the nozzle ring is controlled to perform the self-cleaning operation.
  • a threshold for the number of executions is preset. During a single drive of the vehicle, at most the number of self-cleaning operations corresponding to the preset threshold for the number of executions can be executed. When the threshold for the number of executions is exceeded, no self-cleaning operation can be performed. Then control the nozzle ring to perform self-cleaning operation, so as to avoid unnecessary excessive self-cleaning of the nozzle ring, prevent the turbocharger from frequently performing oil cut-off self-cleaning operations, and extend the service life of the nozzle ring.
  • the preset execution times threshold can be 2 or 3 times, which can be confirmed according to the needs of the nozzle ring service life. If the nozzle ring service life is short, the number of times is set less, and vice versa.
  • step S200 includes step S202:
  • Step S202 If the engine is currently in operation and a nozzle ring jam failure is detected, when the engine speed is less than a first preset speed threshold, and the engine torque is less than a preset torque threshold, control The nozzle ring performs the self-cleaning operation.
  • the engine speed of the nozzle ring is controlled to be less than the first preset speed threshold, and the torque of the engine is less than the preset torque threshold.
  • the self-cleaning operation is performed, that is, when the nozzle ring jam failure is detected, the nozzle ring self-cleaning operation is controlled when the engine is at low speed and light load, so as to ensure the safety of the vehicle. Clean the carbon deposits on the nozzle ring.
  • step S203 is further included:
  • Step S203 If the stuck-up failure of the nozzle ring is not eliminated, a stuck-up failure prompt message is generated.
  • step S202 if the nozzle ring jamming failure is not eliminated, it means that the self-cleaning operation of the nozzle ring fails to effectively eliminate the nozzle ring jamming problem, and the jamming problem is likely to be It is caused by other reasons such as nozzle ring damage, so it is necessary to generate a stuck fault prompt message for the nozzle ring so as to remind the driver to understand the engine condition and perform further operations for troubleshooting.
  • step S200 includes step S204:
  • Step S204 When a shutdown signal for the engine is detected, the cooling water temperature is greater than a preset temperature threshold, and the rotation speed of the engine is less than a second preset rotation speed threshold, control the nozzle ring to perform the self-cleaning operation .
  • the cooling water temperature is set to be higher than the preset temperature threshold and the engine speed is detected when the engine enters the shutdown state, the shutdown signal, the cooling water temperature and the engine speed are used to determine whether to control the nozzle ring to execute the automatic
  • the above-mentioned shutdown signal may be a power-off signal for the engine.
  • the temperature of the cooling water can reflect whether the engine is in a warm state, that is, it can reflect the running time of the engine.
  • the aforementioned preset temperature threshold is a preset temperature threshold used to determine whether the engine has completed the heat engine process. When the cooling water temperature is higher than the preset temperature threshold, it indicates that the engine has been running for a period of time and has completed the warm-up process and entered the normal state.
  • the nozzle ring can be self-cleaned ; And if the cooling water temperature is lower than the preset temperature threshold, it means that the engine has not completed the heat engine process and is in a warm engine state, so the running time is short, so there is no need to clean the nozzle ring.
  • the rotation speed of the engine is set to be lower than the second preset rotation speed threshold, and the engine is determined to be in a power-off state, so as to ensure that the nozzle ring does not damage the engine when the nozzle ring performs the self-cleaning operation.
  • the above-mentioned cooling water temperature can also be replaced by the engine oil temperature, that is, the engine oil temperature is used to determine whether the engine has completed the heat-up process, and then determine whether the nozzle ring needs to be cleaned of carbon deposits.
  • step S205 is further included:
  • Step S205 after controlling the nozzle ring to perform the self-cleaning operation, diagnose whether the nozzle ring has a nozzle ring stuck fault; if there is no stuck fault, end the process; control the variable section turbocharger Exit the self-cleaning function; if there is a stuck nozzle ring fault, and the number of executions of the self-cleaning operation for the current nozzle ring stuck fault has not reached the set value, continue to control the nozzle ring to execute all The self-cleaning operation; if there is a stuck nozzle ring failure, and the number of executions of the self-cleaning operation for the current nozzle ring stuck failure reaches a set value, a fault code will be reported and the driver will be reminded.
  • the general setting value is 2 or 3 times, which needs to be set according to the service life of the nozzle ring. If the service life of the nozzle ring is shorter, the number of times is set less, and vice versa.
  • the nozzle ring is controlled to perform the self-cleaning operation
  • if there is a nozzle ring stuck fault continue to control the nozzle ring to perform the self-cleaning operation until the nozzle ring stuck fault is eliminated or the self-cleaning operation is completed.
  • the number of executions reaches a predetermined value, and after the number of executions of the self-cleaning operation for the current nozzle ring stuck fault reaches the set value, the nozzle ring stuck fault has not been eliminated, the fault code is reported and the driver is reminded, so It can automatically realize the troubleshooting of the nozzle ring jamming fault, avoiding unnecessary fault reminding to the driver.
  • FIG. 2 shows a schematic flow chart of a method for controlling a variable-section turbocharger according to a preferred embodiment of the present disclosure, which is applied to a vehicle, and the vehicle includes a variable-section turbocharger.
  • An engine the variable area turbocharger includes a nozzle ring, and the vehicle stores a preset upper limit of opening for the fully open state of the nozzle ring, and a preset opening for the fully closed state of the nozzle ring Degree lower limit; the method includes steps S211 to S218.
  • Step S211 When the start signal for the engine is detected, the current upper limit value of the opening degree and the current lower limit value of the opening degree of the nozzle ring are acquired.
  • step S211 reference may be made to the detailed description of step S101, which will not be repeated here.
  • Step S212 When the current upper limit of opening is equal to the preset upper limit of opening, and the current lower limit of opening is equal to the preset lower limit of opening, enter the acquisition Describe the steps of the target state information of the engine.
  • step S212 reference may be made to the detailed description of step S102, which will not be repeated here.
  • Step S213 When the current upper limit of opening is not equal to the preset upper limit of opening, and/or the current lower limit of opening is not equal to the preset lower limit of opening, generate Stuck failure prompt message.
  • step S213 reference may be made to the detailed description of step S103, which will not be repeated here.
  • Step S214 Obtain target state information of the engine, where the target state information is related to the engine state.
  • step S214 refers to the detailed description of step S100, which will not be repeated here.
  • Step S215 If the engine is currently running and the nozzle ring jam failure is not detected, control the nozzle ring to perform the self-cleaning operation when the engine reaches a deceleration and fuel cut condition.
  • step S215 reference may be made to the detailed description of step S201, which will not be repeated here.
  • Step S216 If the engine is currently running and a nozzle ring jam failure is detected, when the engine speed is less than a preset speed threshold, and the engine torque is less than a preset torque threshold, control the The nozzle ring performs the self-cleaning operation.
  • step S216 reference may be made to the detailed description of step S202, which will not be repeated here.
  • Step S217 If the stuck-up failure of the nozzle ring is not eliminated, a stuck-up failure prompt message is generated.
  • step S217 reference may be made to the detailed description of step S203, which will not be repeated here.
  • Step S218 When a shutdown signal for the engine is detected, the cooling water temperature is greater than a preset temperature threshold, and the rotation speed of the engine is less than the preset rotation speed threshold, control the nozzle ring to perform the self-cleaning operation.
  • step S21 reference may be made to the detailed description of step S204, which will not be repeated here.
  • step S219 is further included:
  • Step S219 After controlling the nozzle ring to perform the self-cleaning operation, diagnose whether the nozzle ring has a nozzle ring stuck fault; if there is no stuck fault, the process ends; control the variable section turbocharger Exit the self-cleaning function; if there is a stuck nozzle ring fault, and the number of executions of the self-cleaning operation for the current nozzle ring stuck fault has not reached the set value, continue to control the nozzle ring to execute all The self-cleaning operation; if there is a stuck nozzle ring failure, and the number of executions of the self-cleaning operation for the current nozzle ring stuck failure reaches a set value, a fault code will be reported and the driver will be reminded.
  • step S2128 reference may be made to the detailed description of step S205, which will not be repeated here.
  • control method of the variable cross-section turbocharger described in the embodiments of the present disclosure has the following advantages:
  • the nozzle ring By controlling the nozzle ring to perform the self-cleaning operation when the engine reaches the deceleration and fuel cut-off condition when the engine is running and the nozzle ring jam failure is not detected; and the engine is currently running, and If the nozzle ring jamming failure is detected, when the engine speed is less than the preset speed threshold, and the engine torque is less than the preset torque threshold, the nozzle ring is controlled to perform the self-cleaning operation; When the shutdown signal of the engine, and the cooling water temperature is greater than the preset temperature threshold, and the engine speed is less than the preset speed threshold, the nozzle ring is controlled to perform the self-cleaning operation; so as to achieve when required and the current engine operating conditions allow When the nozzle ring performs self-cleaning operation, it uses the drastic changes in the opening of the nozzle ring to generate jitter, thereby removing the carbon deposits attached to the nozzle ring, realizing the self-cleaning of the nozzle ring, avoiding the nozzle ring jamming failure
  • FIG. 3 shows an execution flow chart of the control method of the variable section turbocharger proposed by the embodiment of the present disclosure.
  • step S301 first obtain the current upper limit of opening degree and the current lower limit of opening of the nozzle ring to determine whether the VGT self-learning is successful, and after determining that the VGT self-learning is successful, proceed to step S302;
  • step S302 the engine operating state is judged based on the target state information
  • step S303 if an after-run signal for the engine is detected, and the engine speed is lower than the second preset speed threshold and the water temperature of the cooling water reaches the preset temperature threshold, the VGT is controlled to perform a self-cleaning operation, Then go to step S304;
  • step S304 perform the nozzle ring stuck diagnosis after completing the VGT self-cleaning; if there is no stuck fault, go to step S305 to confirm the completion of self-cleaning; if there is stuck fault, go to step S306 to confirm self-cleaning Unsuccessful, and enter step S307 to report the fault code to remind the fault;
  • step S307 if it is detected that the engine is currently in normal operation, that is, the vehicle is in the process of driving, and the VGT stuck fault is not detected, and the engine currently meets the deceleration and fuel cut (DFCO) requirements, the VGT is controlled to perform self-cleaning operation ;
  • step S310 when it is detected that the engine is currently in a normal operating state, and it is detected that the VGT is stuck and the current speed of the engine is less than the first preset speed threshold and the torque is less than the preset torque threshold, the VGT is controlled to perform a self-cleaning operation , And then enter step S311;
  • step S311 perform nozzle ring stuck diagnosis after completing VGT self-cleaning; if there is no stuck fault, go to step S312 to confirm the completion of self-cleaning; if there is stuck fault, go to step S313 to confirm self-cleaning It is unsuccessful, and enters step S307 to report a fault code to give a fault reminder.
  • Another object of the present disclosure is to provide a control device for a variable-section turbocharger, which is applied to a vehicle.
  • the vehicle includes an engine with a variable-section turbocharger, and the variable-section turbocharger includes Nozzle ring, please refer to FIG. 4, which shows a structural schematic diagram of a control device for a variable cross-section turbocharger proposed in an embodiment of the present disclosure, and the device includes:
  • the first obtaining module 10 is configured to obtain target state information of the engine, where the target state information is related to the engine state;
  • the control module 20 is configured to control the nozzle ring to perform a self-cleaning operation when the target state information meets a preset condition
  • the self-cleaning operation includes controlling the nozzle ring to switch a preset number of times between a fully open state and a fully closed state according to a preset frequency.
  • the target state information related to the engine state in the engine is acquired through the first acquisition module 10, and the control module 20 controls the nozzle when the target state information meets a preset condition
  • the ring performs a self-cleaning operation; wherein, the self-cleaning operation includes controlling the nozzle ring to switch a preset number of times between a fully open state and a fully closed state according to a preset frequency. That is, by controlling the nozzle ring to switch between the fully open state and the fully closed state for a preset number of times according to a preset frequency, the drastic changes in the opening of the nozzle ring are used to generate jitter, thereby removing the carbon deposits attached to the nozzle ring.
  • control module 20 includes:
  • the first control unit is configured to control the nozzle ring to perform the self-cleaning operation when the engine reaches a deceleration and fuel cut-off condition if the engine is currently in a running state and the nozzle ring jam failure is not detected.
  • control module 20 includes:
  • the second control unit is configured to, if the engine is currently in operation and a nozzle ring jam fault is detected, the engine speed is less than a first preset speed threshold, and the engine torque is less than the preset torque When the threshold is set, the nozzle ring is controlled to perform the self-cleaning operation.
  • control module 20 includes:
  • the third control unit is configured to control the nozzle ring to execute the engine when the shutdown signal for the engine is detected, the cooling water temperature is greater than the preset temperature threshold, and the engine speed is less than the second preset rotational speed threshold. Describe the self-cleaning operation.
  • control device further includes:
  • the first prompt information module is configured to generate a stuck fault prompt message if the stuck fault of the nozzle ring is not eliminated after the nozzle ring is controlled to perform the self-cleaning operation.
  • the first control unit is specifically configured to: if the engine is currently in operation and no nozzle ring jam fault is detected, and after the engine is in operation, If the number of executions of the self-cleaning operation does not reach the threshold of the number of executions, when the engine reaches a deceleration and fuel cut-off condition, the nozzle ring is controlled to execute the self-cleaning operation.
  • the vehicle stores a preset upper limit of opening for the fully open state and a preset lower limit for the opening of the fully closed state;
  • the control The device also includes:
  • the second acquisition module is configured to acquire the current upper limit value of the opening degree and the current lower limit value of the opening degree of the nozzle ring when the start signal for the engine is detected;
  • the confirmation module is configured to confirm the entry to the office when the current upper limit of opening is equal to the preset upper limit of opening, and the current lower limit of opening is equal to the preset lower limit of opening. The step of acquiring the target state information of the engine;
  • the second prompt information module is configured to: when the current upper limit of opening is not equal to the preset upper limit of opening, and/or the current lower limit of opening is not equal to the preset lower limit of opening When the value is set, a stuck fault prompt message is generated.
  • Another object of the present disclosure is to provide a vehicle that includes an engine with a variable-section turbocharger, and the variable-section turbocharger includes a nozzle ring, wherein the vehicle further includes the Variable area turbocharger control device.
  • the vehicle has the same advantages as the above-mentioned variable-section turbocharger control method and device compared to the prior art, and will not be repeated here.
  • control method, device, and vehicle for a variable cross-section turbocharger obtain target state information related to the engine state in the engine, and when the target state information meets a preset condition
  • control the nozzle ring to perform a self-cleaning operation includes controlling the nozzle ring to switch a preset number of times between a fully open state and a fully closed state according to a preset frequency. That is, by controlling the nozzle ring to switch between the fully open state and the fully closed state for a preset number of times according to a preset frequency, the drastic changes in the opening of the nozzle ring are used to generate jitter, thereby removing the carbon deposits attached to the nozzle ring.
  • the device embodiments described above are merely illustrative.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network units.
  • Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without creative work.
  • the various component embodiments of the present disclosure may be implemented by hardware, or by software modules running on one or more processors, or by a combination of them.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the computing processing device according to the embodiments of the present disclosure.
  • DSP digital signal processor
  • the present disclosure can also be implemented as a device or device program (for example, a computer program and a computer program product) for executing part or all of the methods described herein.
  • Such a program for realizing the present disclosure may be stored on a computer-readable medium, or may have the form of one or more signals.
  • Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.
  • FIG. 5 shows a computing processing device that can implement the method according to the present disclosure.
  • the computing processing device traditionally includes a processor 1010 and a computer program product in the form of a memory 1020 or a computer readable medium.
  • the memory 1020 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • the memory 1020 has a storage space 1030 for executing program codes 1031 of any method steps in the above methods.
  • the storage space 1030 for program codes may include various program codes 1031 respectively used to implement various steps in the above method. These program codes can be read from or written into one or more computer program products.
  • Such computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards, or floppy disks.
  • Such a computer program product is usually a portable or fixed storage unit as described with reference to FIG. 6.
  • the storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 1020 in the computing processing device of FIG. 5.
  • the program code can be compressed in an appropriate form, for example.
  • the storage unit includes computer-readable code 1031', that is, code that can be read by a processor such as 1010, which, when run by a computing processing device, causes the computing processing device to execute the method described above. The various steps.
  • any reference signs placed between parentheses should not be constructed as a limitation to the claims.
  • the word “comprising” does not exclude the presence of elements or steps not listed in the claims.
  • the word “a” or “an” preceding an element does not exclude the presence of multiple such elements.
  • the present disclosure can be realized by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims that list several devices, several of these devices can be embodied by the same hardware item.
  • the use of the words first, second, and third, etc. do not indicate any order. These words can be interpreted as names.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)

Abstract

一种可变截面涡轮增压器的控制方法，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，可变截面涡轮增压器包括喷嘴环，所述方法包括：获取发动机的目标状态信息，所述目标状态信息与发动机状态相关（S100）；在所述目标状态信息符合预设条件时，控制喷嘴环执行自清洗操作；所述自清洗操作包括按预设频率，控制喷嘴环在全开状态与全关状态之间往复切换预设次数（S200）。还公开了一种可变截面涡轮增压器的控制装置及具有其的车辆。在该控制方法中，利用喷嘴环开度的剧烈变化产生抖动，从而清除喷嘴环上附着的积碳，实现喷嘴环的自清洗，避免了喷嘴环卡滞故障。

Description

一种可变截面涡轮增压器的控制方法、装置及车辆
相关申请的交叉引用
本公开要求在2020年02月28日提交中国专利局、申请号为202010131058.5、名称为“一种可变截面涡轮增压器的控制方法、装置及车辆”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及汽车技术领域，特别涉及一种可变截面涡轮增压器的控制方法、装置及车辆。
背景技术
当前，由于可变截面涡轮增压器(Variable Geometry Turbocharger，VGT)不仅提高发动机的功率，还可以降低发动机排放污染，使得其在燃油汽车发动机中得到广泛应用。
与传统废气旁通阀增压器不同，VGT无旁通阀设置，其吸入的废气直接经过涡轮，且其涡壳内设置了一套可以改变涡轮室进气道截面及进气吹拂方向的喷嘴环装置。该喷嘴环装置可以依据排气流量的不同对应调整角度，以获得最大的能量，并通过同心轴带动压气机将新鲜空气强制压入气缸，以增加气缸的进气量和喷油量，从而使单位气缸容积能够产生更大的做功能量。
但是，在现有技术中，由于发动机长时间运转及油品差异影响，容易在涡端喷嘴环附着积碳，进而导致喷嘴环产生卡滞现象。上述现象不仅影响发动机的能量输出，也严重损害了喷嘴环的使用寿命。
概述
有鉴于此，本公开旨在提出一种可变截面涡轮增压器的控制方法、装置及车辆，以解决现有技术中的可变截面涡轮增压器容易因为附着积碳而出现卡滞现象的问题。
为达到上述目的，本公开的技术方案是这样实现的：
可变截面涡轮增压器的控制方法，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其中，所述方法包括：
获取所述发动机的目标状态信息，所述目标状态信息与发动机状态相关；
在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；
所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。
进一步地，所述的控制方法中，所述在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作，包括：
若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作；
若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于预设转速阈值，且所述发动机的扭矩小于第一预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作。
进一步地，所述的控制方法中，所述在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作，包括：
在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且所述发动机的转速小于第二预设转速阈值时，控制所述喷嘴环执行所述自清洗操作。
进一步地，所述的控制方法中，在所述若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于第一预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作之后，还包括：
若所述喷嘴环卡滞故障未消除，则生成卡滞故障提示信息。
进一步地，所述的控制方法中，在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作，包括：
若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，且在所述发动机处于运行状态后，所述自清洗操作的执行次数未达到执行次数阈值，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作。
进一步地，所述的控制方法中，所述车辆存储有针对所述全开状态的预设开度上限值，以及针对所述全关状态的预设开度下限值；在所述获取所述发动机的目标状态信息之前，还包括：
在检测到针对所述发动机的启动信号时，获取所述喷嘴环的当前开度上限值及当前开度下限值；
在所述当前开度上限值等于所述预设开度上限值，且所述当前开度下限值等于所述预设开度下限值时，则进入所述获取所述发动机的目标状态信息的步骤；
在所述当前开度上限值不等于所述预设开度上限值，和/或所述当前开度下限值不等于所述预设开度下限值时，则生成卡滞故障提示信息。
进一步地，所述在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作之后，还包括：诊断所述喷嘴环是否存在喷嘴环卡滞故障；
若不存在所述卡滞故障，则结束流程，控制所述可变截面涡轮增压器退出自清洗功能；
若存在所述喷嘴环卡滞故障，且针对当次所述喷嘴环卡滞故障的所述自清洗操作的执行次数未达到设定值，则继续控制所述喷嘴环执行所述自清洗操作；
若存在所述喷嘴环卡滞故障，且针对当次喷嘴环卡滞故障的所述自清洗操作的执行次数达到设定值，则报出故障码，并提醒驾驶员。
本公开的另一目的在于提出一种可变截面涡轮增压器的控制装置，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其中，所述装置包括：
第一获取模块，用于获取所述发动机的目标状态信息，所述目标状态信息与发动机状态相关；
控制模块，用于在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；
所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。
进一步地，所述的控制装置中，所述控制模块，包括：
第一控制单元，用于若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作；
第二控制单元，用于若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于第一预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作。
进一步地，所述的控制装置中，所述控制模块，包括：
第三控制单元，用于在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且所述发动机的转速小于第二预设转速阈值时，控制所述喷嘴环执行所述自清洗操作。
进一步地，所述控制装置，还包括：
第一提示信息模块，用于若在控制所述喷嘴环执行所述自清洗操作之后，所述喷嘴环卡滞故障未消除，则生成卡滞故障提示信息。
进一步地，所述的控制装置中，所述车辆存储有针对所述全开状态的预设开度上限值，以及针对所述全关状态的预设开度下限值；所述控制装置， 还包括：
第二获取模块，用于在检测到针对所述发动机的启动信号时，获取所述喷嘴环的当前开度上限值及当前开度下限值；
确认模块，用于在所述当前开度上限值等于所述预设开度上限值，且所述当前开度下限值等于所述预设开度下限值时，则确认进入所述获取所述发动机的目标状态信息的步骤；
第二提示信息模块，用于在所述当前开度上限值不等于所述预设开度上限值，和/或所述当前开度下限值不等于所述预设开度下限值时，则生成卡滞故障提示信息。
相对于在先技术，本公开所述的可变截面涡轮增压器的控制方法及装置具有以下优势：
通过获取所述发动机中与发动机状态相关的目标状态信息，并在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；其中，所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。即通过按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数，以利用喷嘴环开度的剧烈变化产生抖动，从而清除喷嘴环上附着的积碳，实现喷嘴环的自清洗，避免了喷嘴环卡滞故障，解决了现有技术中的可变截面涡轮增压器容易因为附着积碳而出现卡滞现象的问题；另外，由于上述自清洗操作过程的执行无需额外增加清洗装置，也即不会增加发动机的制作成本。
本公开的再一目的在于提出一种车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其中，所述车辆还包括所述的可变截面涡轮增压器的控制装置。
所述车辆与上述一种可变截面涡轮增压器的控制方法、装置相对于现有技术所具有的优势相同，在此不再赘述。
本公开还提供了一种计算处理设备，包括：
存储器，其中存储有计算机可读代码；
一个或多个处理器，当所述计算机可读代码被所述一个或多个处理器执行时，所述计算处理设备执行上述的控制方法。
本公开还提供了一种计算机程序，包括计算机可读代码，当所述计算机可读代码在计算处理设备上运行时，导致所述计算处理设备执行上述的控制方法。
本公开还提供了一种计算机可读介质，其中存储了上述的计算机程序。
上述说明仅是本公开技术方案的概述，为了能够更清楚了解本公开的技 术手段，而可依照说明书的内容予以实施，并且为了让本公开的上述和其它目的、特征和优点能够更明显易懂，以下特举本公开的具体实施方式。
附图简述
构成本公开的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1为本公开实施例所提出的可变截面涡轮增压器的控制方法流程示意图；
图2为本公开一优选实施例所提出的可变截面涡轮增压器的控制方法流程示意图；
图3为本公开实施例所提出的可变截面涡轮增压器的控制方法的执行流程图；
图4为为本公开实施例所提出的可变截面涡轮增压器的控制装置结构示意图；
图5示意性地示出了用于执行根据本公开的方法的计算处理设备的框图；以及
图6示意性地示出了用于保持或者携带实现根据本公开的方法的程序代码的存储单元。
详细描述
下面将参考附图更详细地描述本公开的实施例。虽然附图中显示了本公开的实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更彻底地理解本公开，并且能够将本公开的范围完整地传达给本领域的技术人员。
需要说明的是，在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。
下面将参考附图并结合实施例来详细说明本公开。
请参阅图1，示出了本公开实施例所提供的一种可变截面涡轮增压器的控制方法的流程示意图，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，所述方法包括步骤S100～S200。
S100、获取所述发动机的目标状态信息，所述目标状态信息与发动机状 态相关。
上述步骤S100中，因为喷嘴环的自清洗操作会影响发动机的进气量，也即会影响发动机的动力输出，也即会影响车辆的运行，因而在控制喷嘴环执行自清洗操作前，需要获取发动机的当前所处状态；而发动机在不同的状态下的运行数据不同，因而可以通过发动机中与发动机状态相关的目标状态信息，确定其当前所处状态，以确定发动机当前状态是否允许喷嘴环执行自清洗操作。
在实际应用中，上述目标状态信息包括针对发动机的启动信号、关闭信号、转速、扭矩、油门状态、刹车状态、冷却水温度、运行时长等信息，通过上述数据即可以判断发动机当前所处状态，进而判断当前是否允许对喷嘴环执行自清洗操作。
另外，考虑到是否需要对可变截面涡轮增压器的喷嘴环执行自清洗操作，取决于喷嘴环上的积碳状态，因而上述目标状态信息还包括喷嘴环卡滞故障信息，以便于确定是否需要控制喷嘴环执行自清洗操作。
步骤S200、在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。
上述步骤S200中，预设条件指的是需要且允许控制喷嘴环执行自清洗的发动机的工作参数状态。在上述目标状态信息符合上述预设条件时，即确定当前需要且运行喷嘴环进行自清洗操作，因而控制喷嘴环执行自清洗操作，以在不影响车辆正常行驶的前提下，完成对喷嘴环的清洗。
上述步骤S200中，具体是通过按预设频率，通过控制电子执行器占空比，调节喷嘴环开度在100％与0％之间切换预设次数，从而实现控制喷嘴环在全开状态与全关状态之间往复切换预设次数的效果，以完成喷嘴环的自清洗操作。上述自清洗操作即利用喷嘴环开度的剧烈变化产生抖动，从而清除喷嘴环上附着的积碳，实现喷嘴环的自清洗，避免了喷嘴环卡滞故障。
在实际应用中，控制喷嘴环在全开状态与全关状态之间往复切换预设次数时，可以按先控制喷嘴环进入全开状态，再控制喷嘴环进入全关状态，然后控制喷嘴环进入全开状态的方式进行；也可以按先控制喷嘴环进入全关状态，再控制喷嘴环进入全开状态，然后控制喷嘴环进入全关状态的方式进行。
上述预设频率及预设次数需要根据发动机的具体燃烧性能及积碳在喷嘴环上附着的难以程度进行设置。在实际应用中，在保证抖落积碳的前提下，将上述预设频率及预设次数设置的尽量小，以使得喷嘴环可以利用最小的开度切换次数及切换频率实现清洗喷嘴环的效果，也即使得喷嘴环可以利用最 小抖动频率及抖动次数实现的抖落积碳的效果，以尽量降低上述自清洗操作对喷嘴环带来的损害，从而延长喷嘴环的使用寿命。
相对于现有技术，本公开所述的可变截面涡轮增压器的控制方法具有以下优势：
通过获取所述发动机中与发动机状态相关的目标状态信息，并在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；其中，所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。即通过按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数，以利用喷嘴环开度的剧烈变化产生抖动，从而清除喷嘴环上附着的积碳，实现喷嘴环的自清洗，避免了喷嘴环卡滞故障，解决了现有技术中的可变截面涡轮增压器容易因为附着积碳而出现卡滞现象的问题。
可选地，在一种实施方式中，本公开实施例所述的控制方法，所述车辆存储有针对所述全开状态的预设开度上限值，以及针对所述全关状态的预设开度下限值；所述方法在步骤S100之前，还包括步骤S101～S103。
上述预设开度上限值即在喷嘴环未出现卡滞等故障时可以达到的最大开度值，即正常情况下可以达到的最大开度值；而预设开度下限值即在喷嘴环未出现卡滞等故障时可以达到的最小开度值，即正常情况下可以达到的最小开度值。
步骤S101、在检测到针对所述发动机的启动信号时，获取所述喷嘴环的当前开度上限值及当前开度下限值。
上述步骤S101中，即在检测到需要启动发动机时，获取喷嘴环当前可以达到的开度上限值及开度下限值，即可以获取当前开度上限值及当前开度下限值，用以结合预设开度上限值及预设开度下限值，判断喷嘴环在发动机启动时是否存在卡滞现象。在实际应用中，上述启动信号可以为针对发动机的上电信号。
步骤S102、在所述当前开度上限值等于所述预设开度上限值，且所述当前开度下限值等于所述预设开度下限值时，则进入所述获取所述发动机的目标状态信息的步骤。
上述步骤S102中，若当前开度上限值等于预设开度上限值，且所述当前开度下限值等于所述预设开度下限值，说明喷嘴环可以正常开合，未因积碳的附着而影响其开合状态，因而可以判定其当前不存在卡滞故障，因而可以正常进入所述获取所述发动机的目标状态信息的步骤，也即步骤S100。
步骤S103、在所述当前开度上限值不等于所述预设开度上限值，和/或所 述当前开度下限值不等于所述预设开度下限值时，则生成卡滞故障提示信息。
上述步骤S103中，若当前开度上限值不等于预设开度上限值，和/或所述当前开度下限值不等于所述预设开度下限值，则说明喷嘴环无法正常开合，也即可以判定其当前存在卡滞故障，因而需要生成卡滞故障提示信息以提示驾驶员增压器异常。
在本实施方式中，通过在检测针对到发动机的启动信号时，检测喷嘴环的当前开度上限值与当前开度下限值，以判断喷嘴环当前是否存在无卡滞现象，在不存在卡滞现象时则进入后续步骤，而在存在卡滞现象时体现提醒驾驶员。通过本实施方式即可以实现增压器自学习的效果。
可选地，在一种实施方式中，上述步骤S200包括步骤S201：
步骤S201、若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作。
在本实施方式中，喷嘴环卡滞故障可以通过监测发动机的输出功率确定，上述减速断油条件为预先设定在车辆上的触发发动机进行减速断油操作的条件，该减速断油条件具体可以包括发动机的转速大于或等于减速断油转速阈值，且油门踏板的踩踏角度为0，且未检测到刹车动作。
本公开实施方式中，即在不存在喷嘴环卡滞故障时，利用发动机执行减速断油操作的过程执行喷嘴环的自清洗操作，可以在不发动机的正常运转的前提下，实现对喷嘴环上的积碳进行清理，防止其导致喷嘴环出现卡滞故障，保证增压器正常工作。
优选地，在一种具体实施方式中，上述步骤S201具体包括：
若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，且在所述发动机处于运行状态后，所述自清洗操作的执行次数未达到执行次数阈值，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作。
本实施方式中，预先设置执行次数阈值，在单次驾驶车辆的过程中，最多可以执行该预设设置好的执行次数阈值对应次数的自清洗操作，在超过该该执行次数阈值时，则不再控制喷嘴环执行自清洗操作，从而避免对喷嘴环的不必要的过度自清洗，不让增压器频繁的进行断油自清洗操作，延长喷嘴环的使用寿命。在实际应用中，该预设执行次数阈值可以为2次或3次，具体可以根据需要针对喷嘴环使用寿命来确认，若喷嘴环使用寿命较短，则次数设定就少一些，反之则多一些。
可选地，在一种实施方式中，上述步骤S200包括步骤S202：
步骤S202、若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障， 则在所述发动机的转速小于第一预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作。
本公开实施方式中，即在所发动机当前处于运行状态，且检测到喷嘴环卡滞故障时，控制喷嘴环在发动机的转速小于第一预设转速阈值，且发动机的扭矩小于预设扭矩阈值的运行状态下，执行自清洗操作，即在检测到喷嘴环卡滞故障时，控制在发动机处于低速、小负荷的状态进行执行喷嘴环自清洗操作，以在保证车辆的行车安全的前提下，实现对喷嘴环上的积碳进行清理。
优选地，在一种具体实施方式中，在上述步骤S202之后，还包括步骤S203：
步骤S203、若所述喷嘴环卡滞故障未消除，则生成卡滞故障提示信息。
在本具体实施方式中，即在执行步骤S202之后，若喷嘴环卡滞故障未消除，则说明喷嘴环的自清洗操作未能有效消除喷嘴环的卡滞问题，其该卡滞问题很可能是由喷嘴环损坏等其他原因造成的，因而需要生成针对喷嘴环的卡滞故障提示信息，以便于提醒驾驶员了解发动机状况并作进一步操作，以进行故障排查。
可选地，在一种实施方式中，上述步骤S200包括步骤S204：
步骤S204、在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且所述发动机的转速小于第二预设转速阈值时，控制所述喷嘴环执行所述自清洗操作。
上述步骤S204中，设置冷却水温度高于预设温度阈值且发动机的转速即在检测到发动机进入关停状态时，通过关停信号、冷却水温度及发动机的转速来判断是否控制喷嘴环执行自清洗操作，在实际应用中，上述关闭信号可以为针对发动机的下电信号。
其中，因为只有在发动机运行时间达到一定长度时才会在喷嘴环上产生积碳，才有必要对其进行清理，以避免因为频繁上、下电多次自清洗影响增压器寿命。而冷却水温度的高低可以反映发动机是否处于热机状态，也即可以反应发动机的运行时长。上述预设温度阈值即为预先设置的用于判定发动机是否完成了热机过程的温度阈值。在冷却水温度高于该预设温度阈值时，说明发动机已经经过一段时间的运行且完成了热机过程而进入正常状态，此时为了防止出现喷嘴环卡滞现象，可以对喷嘴环进行自清洗操作；而若冷却水温度低于该预设温度阈值时，说明发动机未完成了热机过程而处于热机状态，因而运行时间较短，因而没必要对喷嘴环进行清洗。
其中，设置发动机的转速低于第二预设转速阈值，确定发动机处于下电状态，以保证喷嘴环执行自清洗操作时不会损害发动机。
通过本实施方式，可以确保发动机每次长时间运行后，增压器均会进行自动清理喷嘴环积碳，保证增压器正常工作。
在实际应用中，上述冷却水温度也可以用发动机的机油温度代替，即通过机油温度来判断发动机是否完成了热机过程，进而判断是否需要对喷嘴环进行积碳清理。
优选地，在一种具体实施方式中，上述步骤S204之后，还包括步骤S205：
步骤S205、在控制所述喷嘴环执行自清洗操作完成后，诊断喷嘴环是否存在喷嘴环卡滞故障；若不存在所述卡滞故障，则结束流程；控制所述可变截面涡轮增压器退出自清洗功能；若存在所述喷嘴环卡滞故障，且针对当次所述喷嘴环卡滞故障的所述自清洗操作的执行次数未达到设定值，则继续控制所述喷嘴环执行所述自清洗操作；若存在所述喷嘴环卡滞故障，且针对当次喷嘴环卡滞故障的所述自清洗操作的执行次数达到设定值，则报出故障码，并提醒驾驶员。
在上述步骤S205中，一般设定值取2次或3次，需要针对喷嘴环使用寿命来设置，若喷嘴环使用寿命较短，则次数设定就少一些，反之则多一些。
本实施方式中，在发动机下电并控制喷嘴环执行完自清洗操作后，若存在喷嘴环卡滞故障，则继续控制喷嘴环执行自清洗操作，直至喷嘴环卡滞故障消除或自清洗操作的执行次数达到预定值，并在针对当次喷嘴环卡滞故障的所述自清洗操作的执行次数达到设定值后喷嘴环卡滞故障尚未消除，则报出故障码，并提醒驾驶员，从而可以自动实现对喷嘴环卡滞故障的排查，避免对驾驶员进行不必要的故障提醒。
请参阅图2，示出了本公开一优选实施例所提供的一种可变截面涡轮增压器的控制方法的流程示意图，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，所述车辆存储有针对所述喷嘴环全开状态的预设开度上限值，以及针对所述喷嘴环全关状态的预设开度下限值；所述方法包括步骤S211～S218。
步骤S211、在检测到针对所述发动机的启动信号时，获取所述喷嘴环的当前开度上限值及当前开度下限值。
上述步骤S211可参照步骤S101的详细说明，此处不再赘述。
步骤S212、在所述当前开度上限值等于所述预设开度上限值，且所述当前开度下限值等于所述预设开度下限值时，则进入所述获取所述发动机的目标状态信息的步骤。
上述步骤S212可参照步骤S102的详细说明，此处不再赘述。
步骤S213、在所述当前开度上限值不等于所述预设开度上限值，和/或所 述当前开度下限值不等于所述预设开度下限值时，则生成卡滞故障提示信息。
上述步骤S213可参照步骤S103的详细说明，此处不再赘述。
步骤S214、获取所述发动机的目标状态信息，所述目标状态信息与发动机状态相关。
上述步骤S214可参照步骤S100的详细说明，此处不再赘述。
步骤S215、若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作。
上述步骤S215可参照步骤S201的详细说明，此处不再赘述。
步骤S216、若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作。
上述步骤S216可参照步骤S202的详细说明，此处不再赘述。
步骤S217、若所述喷嘴环卡滞故障未消除，则生成卡滞故障提示信息。
上述步骤S217可参照步骤S203的详细说明，此处不再赘述。
步骤S218、在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且所述发动机的转速小于预设转速阈值时，控制所述喷嘴环执行所述自清洗操作。
上述步骤S218可参照步骤S204的详细说明，此处不再赘述。
可选地，上述步骤S218之后，还包括步骤S219：
步骤S219、在控制所述喷嘴环执行自清洗操作完成后，诊断喷嘴环是否存在喷嘴环卡滞故障；若不存在所述卡滞故障，则结束流程；控制所述可变截面涡轮增压器退出自清洗功能；若存在所述喷嘴环卡滞故障，且针对当次所述喷嘴环卡滞故障的所述自清洗操作的执行次数未达到设定值，则继续控制所述喷嘴环执行所述自清洗操作；若存在所述喷嘴环卡滞故障，且针对当次喷嘴环卡滞故障的所述自清洗操作的执行次数达到设定值，则报出故障码，并提醒驾驶员。
上述步骤S218可参照步骤S205的详细说明，此处不再赘述。
相对于现有技术，本公开实施例所述的可变截面涡轮增压器的控制方法具有以下优势：
通过在所述发动机处于运行状态，且未检测到喷嘴环卡滞故障，在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作；以及发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于预设转速阈值，且发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环 执行所述自清洗操作；以及在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且发动机的转速小于预设转速阈值时，控制所述喷嘴环执行所述自清洗操作；从而实现在需求时且当前发动机工况允许喷嘴环执行自清洗操作时，以利用喷嘴环开度的剧烈变化产生抖动，从而清除喷嘴环上附着的积碳，实现喷嘴环的自清洗，避免了喷嘴环卡滞故障，解决了现有技术中的可变截面涡轮增压器容易因为附着积碳而出现卡滞现象的问题。
在实际应用中，请参阅图3，示出了本公开实施例所提出的可变截面涡轮增压器的控制方法执行流程图。
如图3所示，在步骤S301中，先获取喷嘴环的当前开度上限值及当前开度下限值，以判断VGT是否自学习成功，并在判断VGT自学习成功后进入步骤S302；
在步骤S302中，通过目标状态信息对发动机运行状态进行判断；
在步骤S303中，若检测到针对发动机的下电(After run)信号，且发动机的转速低于第二预设转速阈值且冷却水的水温达到预设温度阈值，则控制VGT进行自清洗操作，然后进入步骤S304；
在步骤S304中，在完成VGT自清洗后进行喷嘴环卡滞诊断；若无卡滞故障，则进入步骤S305中，确认自清洗完成；若有卡滞故障，则进入步骤S306中，确认自清洗不成功，并进入步骤S307中报出故障码以进行故障提醒；
在步骤S307中，若检测出发动机当前处于正常运行状态，即车辆处于行驶过程中，且未检测到VGT卡滞故障，且发动机当前满足减速断油(DFCO)要求，则控制VGT进行自清洗操作；
在步骤S310中，在检测出发动机当前处于正常运行状态，且检测出VGT有卡滞故障且发动机的当前转速小于第一预设转速阈值及扭矩小于预设扭矩阈值时，控制VGT进行自清洗操作，然后进入步骤S311中；
在步骤S311中，在完成VGT自清洗后进行喷嘴环卡滞诊断；若无卡滞故障，则进入步骤S312中，确认自清洗完成；若有卡滞故障，则进入步骤S313中，确认自清洗不成功，并进入步骤S307中报出故障码以进行故障提醒。
本公开的另一目的在于提出一种可变截面涡轮增压器的控制装置，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其中，请参阅图4，图4示出了本公开实施例所提出的一种可变截面涡轮增压器的控制装置的结构示意图，所述装置包括：
第一获取模块10，用于获取所述发动机的目标状态信息，所述目标状态信息与发动机状态相关；
控制模块20，用于在所述目标状态信息符合预设条件时，控制所述喷嘴 环执行自清洗操作；
所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。
本公开实施例所述的系统中，通过第一获取模块10获取所述发动机中与发动机状态相关的目标状态信息，并控制模块20在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；其中，所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。即通过按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数，以利用喷嘴环开度的剧烈变化产生抖动，从而清除喷嘴环上附着的积碳，实现喷嘴环的自清洗，避免了喷嘴环卡滞故障，解决了现有技术中的可变截面涡轮增压器容易因为附着积碳而出现卡滞现象的问题；另外，由于上述自清洗操作过程的执行无需额外增加清洗装置，也即不会增加发动机的制作成本。
可选地，所述的控制装置中，所述控制模块20，包括：
第一控制单元，用于若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作。
可选地，所述的控制装置中，所述控制模块20，包括：
第二控制单元，用于若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于第一预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作。
可选地，所述的控制装置中，所述控制模块20，包括：
第三控制单元，用于在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且所述发动机的转速小于第二预设转速阈值时，控制所述喷嘴环执行所述自清洗操作。
可选地，所述控制装置，还包括：
第一提示信息模块，用于若在控制所述喷嘴环执行所述自清洗操作之后，所述喷嘴环卡滞故障未消除，则生成卡滞故障提示信息。
可选地，所述的控制装置中，所述第一控制单元，具体用于若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，且在所述发动机处于运行状态后，所述自清洗操作的执行次数未达到执行次数阈值，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作。
可选地，所述的控制装置中，所述车辆存储有针对所述全开状态的预设开度上限值，以及针对所述全关状态的预设开度下限值；所述控制装置，还 包括：
第二获取模块，用于在检测到针对所述发动机的启动信号时，获取所述喷嘴环的当前开度上限值及当前开度下限值；
确认模块，用于在所述当前开度上限值等于所述预设开度上限值，且所述当前开度下限值等于所述预设开度下限值时，则确认进入所述获取所述发动机的目标状态信息的步骤；
第二提示信息模块，用于在所述当前开度上限值不等于所述预设开度上限值，和/或所述当前开度下限值不等于所述预设开度下限值时，则生成卡滞故障提示信息。
本公开的再一目的在于提出一种车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其中，所述车辆还包括所述的可变截面涡轮增压器的控制装置。
所述车辆与上述一种可变截面涡轮增压器的控制方法、装置相对于现有技术所具有的优势相同，在此不再赘述
关于上述系统和车辆的技术细节和好处已在上述方法中进行了详细阐述，此处不再赘述。
综上所述，本公开提供的可变截面涡轮增压器的控制方法、装置及车辆，通过获取所述发动机中与发动机状态相关的目标状态信息，并在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；其中，所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。即通过按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数，以利用喷嘴环开度的剧烈变化产生抖动，从而清除喷嘴环上附着的积碳，实现喷嘴环的自清洗，避免了喷嘴环卡滞故障，解决了现有技术中的可变截面涡轮增压器容易因为附着积碳而出现卡滞现象的问题；另外，由于上述自清洗操作过程的执行无需额外增加清洗装置，也即不会增加发动机的制作成本。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以 理解并实施。
本公开的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的软件模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本公开实施例的计算处理设备中的一些或者全部部件的一些或者全部功能。本公开还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本公开的程序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。
例如，图5示出了可以实现根据本公开的方法的计算处理设备。该计算处理设备传统上包括处理器1010和以存储器1020形式的计算机程序产品或者计算机可读介质。存储器1020可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储器1020具有用于执行上述方法中的任何方法步骤的程序代码1031的存储空间1030。例如，用于程序代码的存储空间1030可以包括分别用于实现上面的方法中的各种步骤的各个程序代码1031。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘，紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为如参考图6所述的便携式或者固定存储单元。该存储单元可以具有与图5的计算处理设备中的存储器1020类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常，存储单元包括计算机可读代码1031’，即可以由例如诸如1010之类的处理器读取的代码，这些代码当由计算处理设备运行时，导致该计算处理设备执行上面所描述的方法中的各个步骤。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本公开的至少一个实施例中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本公开可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬 件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开的保护范围之内。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。

Claims (16)

  1. 一种可变截面涡轮增压器的控制方法，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其特征在于，所述方法包括：
    获取所述发动机的目标状态信息，所述目标状态信息与发动机状态相关；
    在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；
    所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。
  2. 根据权利要求1所述的控制方法，其特征在于，所述在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作，包括：
    若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作；
    若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于第一预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作。
  3. 根据权利要求1所述的控制方法，其特征在于，所述在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作，包括：
    在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且所述发动机的转速小于第二预设转速阈值时，控制所述喷嘴环执行所述自清洗操作。
  4. 根据权利要求2所述的控制方法，其特征在于，所述若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于第一预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作之后，还包括：
    所述喷嘴环卡滞故障未消除，则生成卡滞故障提示信息。
  5. 根据权利要求1所述的控制方法，其特征在于，在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作，包括：
    若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，且在所述发动机处于运行状态后，所述自清洗操作的执行次数未达到执行次数阈值，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作。
  6. 根据权利要求1所述的控制方法，其特征在于，所述车辆存储有针对所述全开状态的预设开度上限值，以及针对所述全关状态的预设开度下限值；在所述获取所述发动机的目标状态信息之前，还包括：
    在检测到针对所述发动机的启动信号时，获取所述喷嘴环的当前开度上 限值及当前开度下限值；
    在所述当前开度上限值等于所述预设开度上限值，且所述当前开度下限值等于所述预设开度下限值时，则进入所述获取所述发动机的目标状态信息的步骤；
    在所述当前开度上限值不等于所述预设开度上限值，和/或所述当前开度下限值不等于所述预设开度下限值时，则生成卡滞故障提示信息。
  7. 根据权利要求1所述的控制方法，其特征在于，所述在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作之后，还包括：诊断所述喷嘴环是否存在喷嘴环卡滞故障；
    若不存在所述卡滞故障，则结束流程，控制所述可变截面涡轮增压器退出自清洗功能；
    若存在所述喷嘴环卡滞故障，且针对当次所述喷嘴环卡滞故障的所述自清洗操作的执行次数未达到设定值，则继续控制所述喷嘴环执行所述自清洗操作；
    若存在所述喷嘴环卡滞故障，且针对当次喷嘴环卡滞故障的所述自清洗操作的执行次数达到设定值，则报出故障码，并提醒驾驶员。
  8. 一种可变截面涡轮增压器的控制装置，应用于车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其特征在于，所述装置包括：
    第一获取模块，用于获取所述发动机的目标状态信息，所述目标状态信息与发动机状态相关；
    控制模块，用于在所述目标状态信息符合预设条件时，控制所述喷嘴环执行自清洗操作；
    所述自清洗操作包括按预设频率，控制所述喷嘴环在全开状态与全关状态之间往复切换预设次数。
  9. 根据权利要求8所述的控制装置，其特征在于，所述控制模块，包括：
    第一控制单元，用于若所述发动机当前处于运行状态，且未检测到喷嘴环卡滞故障，则在所述发动机达到减速断油条件时，控制所述喷嘴环执行所述自清洗操作；
    第二控制单元，用于若所述发动机当前处于运行状态，且检测到喷嘴环卡滞故障，则在所述发动机的转速小于第一预设转速阈值，且所述发动机的扭矩小于预设扭矩阈值时，控制所述喷嘴环执行所述自清洗操作。
  10. 根据权利要求8所述的控制装置，其特征在于，所述控制模块，包括：
    第三控制单元，用于在检测到针对所述发动机的关闭信号，且冷却水温度大于预设温度阈值，且所述发动机的转速小于第二预设转速阈值时，控制所述喷嘴环执行所述自清洗操作。
  11. 根据权利要求9所述的控制装置，其特征在于，所述控制模块，还包括：
    第一提示信息模块，用于若在控制所述喷嘴环执行所述自清洗操作之后，所述喷嘴环卡滞故障未消除，则生成卡滞故障提示信息。
  12. 根据权利要求8所述的控制装置，其特征在于，所述的控制装置中，所述车辆存储有针对所述全开状态的预设开度上限值，以及针对所述全关状态的预设开度下限值；所述控制装置，还包括：
    第二获取模块，用于在检测到针对所述发动机的启动信号时，获取所述喷嘴环的当前开度上限值及当前开度下限值；
    确认模块，用于在所述当前开度上限值等于所述预设开度上限值，且所述当前开度下限值等于所述预设开度下限值时，则确认进入所述获取所述发动机的目标状态信息的步骤；
    第二提示信息模块，用于在所述当前开度上限值不等于所述预设开度上限值，和/或所述当前开度下限值不等于所述预设开度下限值时，则生成卡滞故障提示信息。
  13. 一种车辆，所述车辆包括具有可变截面涡轮增压器的发动机，所述可变截面涡轮增压器包括喷嘴环，其特征在于，所述车辆还包括如权利要求8-12任一项所述的可变截面涡轮增压器的控制装置。
  14. 一种计算处理设备，其特征在于，包括：
    存储器，其中存储有计算机可读代码；
    一个或多个处理器，当所述计算机可读代码被所述一个或多个处理器执行时，所述计算处理设备执行如权利要求1-7中任一项所述的控制方法。
  15. 一种计算机程序，包括计算机可读代码，当所述计算机可读代码在计算处理设备上运行时，导致所述计算处理设备执行根据权利要求1-7中任一项所述的控制方法。
  16. 一种计算机可读介质，其中存储了如权利要求15所述的计算机程序。
PCT/CN2021/075112 2020-02-28 2021-02-03 一种可变截面涡轮增压器的控制方法、装置及车辆 Ceased WO2021169760A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010131058.5A CN112392589B (zh) 2020-02-28 2020-02-28 一种可变截面涡轮增压器的控制方法、装置及车辆
CN202010131058.5 2020-02-28

Publications (1)

Publication Number Publication Date
WO2021169760A1 true WO2021169760A1 (zh) 2021-09-02

Family

ID=74603814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/075112 Ceased WO2021169760A1 (zh) 2020-02-28 2021-02-03 一种可变截面涡轮增压器的控制方法、装置及车辆

Country Status (2)

Country Link
CN (1) CN112392589B (zh)
WO (1) WO2021169760A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113982750A (zh) * 2021-09-30 2022-01-28 东风商用车有限公司 一种vgt增压器自清洁控制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003049675A (ja) * 2001-08-08 2003-02-21 Toyota Motor Corp 内燃機関
US20090151351A1 (en) * 2007-12-18 2009-06-18 Detroit Diesel Corporation Method for determining necessity of multiple vane cleaning procedures
JP2010025054A (ja) * 2008-07-23 2010-02-04 Toyota Motor Corp ターボチャージャの制御装置
US7870730B2 (en) * 2007-12-18 2011-01-18 Detroit Diesel Corporation Variable geometry turbocharger extender idle vane cycle
CN104100378A (zh) * 2014-08-01 2014-10-15 安徽江淮汽车股份有限公司 一种增压器喷嘴叶片的积碳清除方法及装置
CN105986844A (zh) * 2015-01-30 2016-10-05 上海汽车集团股份有限公司 可变喷嘴涡轮增压器控制方法及装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492519A (en) * 1979-02-15 1985-01-08 Wallace Murray Corporation Turbocharger exhaust gas by-pass valve
EP1627993A1 (de) * 2004-08-16 2006-02-22 ABB Turbo Systems AG Reinigungsvorrichtung für eine Abgasturbine
FI117804B (fi) * 2005-09-16 2007-02-28 Waertsilae Finland Oy Järjestely ja menetelmä turbokompressorilla varustetun mäntämoottorin yhteydessä
CN101113678A (zh) * 2007-07-31 2008-01-30 孙敏超 一种变出口流动截面可调节涡轮喷嘴环
US9239013B2 (en) * 2011-01-03 2016-01-19 General Electric Company Combustion turbine purge system and method of assembling same
DE102011082089A1 (de) * 2011-09-02 2013-03-07 Abb Turbo Systems Ag Reinigungsvorrichtung einer Abgasturbine
EP2781699B1 (de) * 2013-03-19 2018-05-02 ABB Turbo Systems AG Reinigungsvorrichtung einer Abgasturbine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003049675A (ja) * 2001-08-08 2003-02-21 Toyota Motor Corp 内燃機関
US20090151351A1 (en) * 2007-12-18 2009-06-18 Detroit Diesel Corporation Method for determining necessity of multiple vane cleaning procedures
US7870730B2 (en) * 2007-12-18 2011-01-18 Detroit Diesel Corporation Variable geometry turbocharger extender idle vane cycle
JP2010025054A (ja) * 2008-07-23 2010-02-04 Toyota Motor Corp ターボチャージャの制御装置
CN104100378A (zh) * 2014-08-01 2014-10-15 安徽江淮汽车股份有限公司 一种增压器喷嘴叶片的积碳清除方法及装置
CN105986844A (zh) * 2015-01-30 2016-10-05 上海汽车集团股份有限公司 可变喷嘴涡轮增压器控制方法及装置

Also Published As

Publication number Publication date
CN112392589B (zh) 2021-12-28
CN112392589A (zh) 2021-02-23

Similar Documents

Publication Publication Date Title
JP5293897B2 (ja) 内燃機関の制御装置
US20180128145A1 (en) Method and system for an exhaust diverter valve
JP5573391B2 (ja) 排気ガス浄化システム
US20130304357A1 (en) Diesel Engine Operation for Fast Transient Response and Low Emissions
CN1670342A (zh) 柴油机微粒滤清器的再生
US20110289919A1 (en) Control apparatus of vehicle
US7657364B2 (en) Apparatus, system, and method for thermal management of an engine comprising a continuously variable transmission
US8109091B2 (en) Exhaust gas recirculation control systems and methods
CN113958417A (zh) 一种egr单向阀高温保护控制方法、装置及存储介质
JP5931993B2 (ja) 内燃機関の制御装置
US11067018B2 (en) Method for regenerating an Otto particle filter of an internal combustion engine of a vehicle
WO2021169760A1 (zh) 一种可变截面涡轮增压器的控制方法、装置及车辆
US11767787B2 (en) Catalyst early activation control at cold engine start
CN113187614B (zh) 一种电子节气门控制方法及电子控制单元
JP5525549B2 (ja) 自動車の自動停止を管理する方法
JP4400411B2 (ja) 内燃機関のｅｇｒ制御装置
JP6233492B1 (ja) 排気浄化装置の再生制御装置
JP6406333B2 (ja) 過給機付エンジンの制御装置及び制御方法
JP6980490B2 (ja) エンジンシステムの診断方法および装置
CN110500186A (zh) 发动机停机控制系统、控制方法及车辆
WO2008032472A1 (en) Control device for exhaust gas recirculation valve
JP2024073697A (ja) 内燃機関の制御装置
CN111456836A (zh) 一种减少发动机废气排放的方法和装置
JP6406334B2 (ja) 過給機付エンジンの制御装置及び制御方法
JP6073644B2 (ja) 排圧調整バルブの制御装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21761900

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21761900

Country of ref document: EP

Kind code of ref document: A1