CN114776504A

CN114776504A - Engine start control method, device, medium and equipment

Info

Publication number: CN114776504A
Application number: CN202110795985.1A
Authority: CN
Inventors: 刘健; 何荣章; 刘洋; 吴迪
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-07-22
Anticipated expiration: 2041-07-14
Also published as: CN114776504B

Abstract

The present disclosure relates to an engine start control method, apparatus, medium, and device. The method comprises the following steps: receiving a reservation starting instruction sent by a user terminal; if the reserved starting instruction is received, controlling to start the engine when the vehicle reaches a first time after flameout; and if the engine is started successfully and flameout conditions are met, controlling the engine to flameout. Therefore, the engine can be automatically started to heat before the temperature of the engine water is reduced to a lower temperature, and the problem that the vehicle is difficult to cold start at an extremely low temperature is effectively solved.

Description

Engine start control method, device, medium and equipment

Technical Field

The present disclosure relates to the field of vehicle automatic control technologies, and in particular, to an engine start control method, apparatus, medium, and device.

Background

At present, vehicles matched with a power assembly system mainly comprising an internal combustion engine have greatly reduced starting performance in low-temperature seasons in alpine regions along with reduction of environmental temperature after long-time low-temperature standing. After the diesel engine uses the preheating plug preheating technology, a certain auxiliary starting function can be achieved. When the temperature is lower than the ambient temperature (-25-0 ℃), the preheating effect of the preheating plug is better. At extremely low temperatures of-30 ℃ and below, the discharge capacity of the battery sharply decreases due to further increase in engine resistance, thereby resulting in sharp deterioration of the starting performance. Especially in the vehicle type with double-mass flywheel, the starting process needs to pass through the torsional vibration area, and the phenomenon of difficult starting is easy to occur.

Current solutions to this problem are: 1. the compression ratio of the engine is improved, the explosion pressure of the engine in the starting process is improved, and the cold starting capability is optimized. As emission regulations are continuously upgraded, the limit value of NOx is continuously tightened, and the compression ratio is reduced close to that of a gasoline engine. 2. After sale, a cooling liquid heating device is additionally arranged, so that the engine cooling liquid is heated to a higher temperature at an extremely low temperature, the friction torque of the engine is lower, and the engine can be started smoothly. This measure however means that long waiting times and additional heating device installations are required, with a certain risk of malfunction and failure of the vehicle.

Disclosure of Invention

An object of the present disclosure is to provide an engine start control method, apparatus, medium, and device that can effectively improve the cold start performance of a vehicle at extremely low temperatures.

In order to achieve the above object, the present disclosure provides an engine start control method including:

receiving a reservation starting instruction sent by a user terminal;

if the reserved starting instruction is received, controlling to start the engine when the time reaches a first time after the vehicle is shut down;

and if the engine is started successfully and flameout conditions are met, controlling the engine to flameout.

Optionally, the reserved starting instruction includes the first duration.

Optionally, the controlling starting the engine when the first time period is reached after the vehicle is turned off includes:

the engine is started by TBOX after the vehicle is turned off, and the engine is started by ECM control when the first time period is determined to be reached.

Optionally, the method further comprises:

if the engine start is successful, the ECM sets an engine state value sent to TBOX to a start state.

Optionally, the misfire condition comprises: the water temperature of the engine is larger than or equal to a preset temperature threshold, and the electric quantity of the power battery is larger than or equal to a preset electric quantity threshold.

Optionally, after the controlling starts the engine, the method further comprises:

if the engine fails to start, restarting the engine after a predetermined second time period;

and if the engine fails to be started again, sending an alarm message to the user terminal, and not starting the engine.

Optionally, the method further comprises:

if the engine fails to restart, the ECM sets an engine state value sent to TBOX to an un-started state.

Optionally, after the controlling the engine to stall, the method further comprises:

and controlling the engine to be started every third time interval until the preset starting times are reached, and stopping controlling the engine to be started.

Optionally, the reservation starting instruction includes the third duration.

The present disclosure also provides an engine start control apparatus, the apparatus comprising:

the receiving module is used for receiving a reservation starting instruction sent by a user terminal;

the first control module is used for controlling the starting of the engine when the vehicle is flamed out for a first time length if the reserved starting instruction is received;

and the second control module is used for controlling the engine to be shut down if the engine is started successfully and meets a shut-down condition.

The present disclosure also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described method provided by the present disclosure.

The present disclosure also provides an electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the above method provided by the present disclosure.

Through the technical scheme, if a reserved starting instruction sent by the user terminal is received, the engine is controlled to be started when the first time length is reached after the vehicle is shut down; and if the engine is successfully started and the flameout condition is met, controlling the engine to flameout. The user can send an instruction through the user terminal, and the engine is started in an appointed mode after the vehicle is shut down, so that the engine can be automatically started to be heated before the water temperature of the engine is reduced to a lower temperature, and the problem that the vehicle is difficult to cold start at an extremely low temperature is effectively solved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but do not constitute a limitation of the disclosure. In the drawings:

FIG. 1 is a flow chart of an engine start control method provided in an exemplary embodiment;

FIG. 2 is a flow chart of an engine start control method provided by another exemplary embodiment;

FIG. 3 is a block diagram of an engine start control apparatus provided in an exemplary embodiment;

FIG. 4 is a block diagram of an electronic device shown in an exemplary embodiment.

Detailed Description

The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

FIG. 1 is a flow chart of an engine start control method provided by an exemplary embodiment. As shown in fig. 1, the method may include the steps of:

in step S11, a reservation activation instruction transmitted from the user terminal is received.

In step S12, if the reserved start command is received, the engine is controlled to start when the vehicle reaches the first time period after the vehicle is turned off.

And step S13, if the engine is started successfully and the flameout condition is met, controlling the engine to flameout.

A user may install an Application (APP) in a user terminal (e.g., a computer, a tablet, a smartphone, a wearable device, etc.), and generate a reservation start instruction by triggering in the APP, the reservation start instruction being sent to a vehicle through a server. For example, when the user clicks a soft key "start engine warm-up by reservation" in APP, a reservation start instruction is transmitted to the server. The vehicle may be provided with a communication module (e.g., TBOX) in communication with the server to receive the reservation start instruction.

The vehicle may receive the reserved launch instruction prior to shutdown. If the vehicle is turned off, the signal sent by the server can be received by periodically waking up the vehicle.

The first time period may be stored in the vehicle in advance, the first time period indicating a period from when the vehicle is turned off to when the engine is automatically started, and the first time period may be predetermined, for example, 3.5 hours or 4 hours. Controlling starting the engine when the first time period is reached after the vehicle is turned off may include: the Engine is started by TBOX after the vehicle is turned off, and controlled by an Engine Controller (ECM) to start the Engine when it is determined that the first time period has been reached.

If the engine start is successful, the ECM may set an engine state value sent to TBOX to a start state so that TBOX can pause timing.

After the engine is started, whether a flameout condition is achieved or not is monitored, if the flameout condition is met, the engine can be considered to be started to play a certain role in heating the engine, heating can be finished, and the engine can be controlled to be flamed out.

In one embodiment, the reservation initiation instruction may include a first duration. That is, the user may select the first duration at the user terminal. For example, an input box may be displayed in the APP interface, in which the user inputs the first duration, or a plurality of selectable durations may be displayed in the APP interface, where the duration clicked by the user is the first duration.

In this embodiment, the user can be based on actual conditions and independently control the length of time of reservation start engine for the engine starts to heat and accords with actual demand more, and the flexibility is better.

Wherein the flameout condition may include: the water temperature of the engine is greater than or equal to a preset temperature threshold value, and the electric quantity of the power battery is greater than or equal to a preset electric quantity threshold value. If the water temperature of the engine is equal to or higher than the predetermined temperature threshold, it is considered that the engine is heated to a certain degree. When the engine runs, the power battery can be charged. If the electric quantity of the power battery is larger than or equal to the preset electric quantity threshold value, the power battery can be considered to have more electric quantity, the normal driving requirement can be met, at the moment, the power battery can not be charged any more, and the engine can be flamed out. The predetermined temperature threshold and the predetermined charge threshold may be experimentally or empirically derived.

Sometimes the first start of the engine fails to start, and a second attempt may be made. In still another embodiment, on the basis of fig. 1, after the step S12 of controlling starting the engine, the method may further include:

if the engine fails to start, the engine is restarted after a preset second time length;

Whether the ignition is successful or not CAN be monitored through signals in a CAN bus, if the ignition is failed for the second time, an alarm message CAN be sent to a user terminal through a server, the ignition is not started, and a vehicle owner is waited to manually ignite. The APP in the user terminal can pop up a reminding window, for example, a text box of 'schedule engine start failure, please process as soon as possible' is popped up. Thus, the user can know the starting condition of the engine as soon as possible so as to process as early as possible, and the condition that the cold starting is difficult due to the fact that the vehicle is kept still for a long time at an extremely low temperature is avoided. In the present embodiment, the second period of time may be set to 5s, 10s, 15s, 20s, 25s, 30s, 35s, or the like.

If the engine restart fails, the ECM may set an engine state value sent to TBOX to an un-started state so that TBOX can restart timing.

After the engine is scheduled to start and shut down for the first period of time, heating may also be repeatedly initiated at certain intervals. In yet another embodiment, after step S13 of controlling the engine to stall, the method may further include: and controlling the engine to be started every third time interval until the preset starting times are reached, and stopping controlling the engine to be started.

The third period may be stored in the vehicle in advance. Repeatedly starting the heating at certain time intervals can maintain the engine heating state of the vehicle, and prevent the vehicle from standing at an extremely low temperature for too long.

In one embodiment, the reserved activation instruction may include a third duration. That is, the user may select the third duration at the user terminal. For example, an input box may be displayed in the APP interface, and the user inputs the third duration therein, or a plurality of selectable durations may be displayed in the APP interface, and the duration clicked by the user is the third duration. The third duration may be equal to the first duration, or the third duration may be equal to the first duration by default, and of course, the third duration may be set to be smaller than or greater than the first duration. For example, the first time period is 3.5 hours, the first time period is 4 hours, the engine is automatically restarted for the first time when the vehicle is shut down by the user and reaches 3.5 hours after the vehicle is shut down, the timing is restarted after the engine is shut down and reaches 4 hours, the engine is automatically restarted for the second time when the shut down condition is met and the timing is restarted and reaches 4 hours after the engine is shut down, the engine is automatically restarted for the third time, and so on, until the number of times of automatic starting after the vehicle is shut down by the user reaches a preset number of times (for example, 3 times), the engine is not automatically started again after the shut down, and the engine can only be manually started by the user.

In the embodiment, the user can independently control the time length for repeatedly starting the engine according to the actual condition, so that the engine is started and heated to meet the actual requirement, and the flexibility is better.

The method of the present disclosure may be performed by one or more controllers in a vehicle. FIG. 2 is a flow chart of an engine start control method provided by another exemplary embodiment. In this embodiment, the technical features of the above embodiments are combined. As shown in fig. 2, the engine start control method may include the steps of:

1. the APP sends a start time (which can be calculated by the TBOX according to the first time length) set by a user/a time interval (a time length from flameout to automatic starting of the engine, such as a third time length) to the TBOX in real time;

2. timing by TBOX;

3. if the set time/time interval is reached, TBOX sends a signal 1 (engine start request) to the body controller KBCM;

4. KBCM sends signal 2 (engine start request) to ECM to start the engine;

5. the ECM determines whether the ignition is successful, and if so, sets a coding value of an engine state signal 3 sent to the TBOX as a start state;

6. if the engine state signal is unsuccessful, the ECM sets a coding value of an engine state signal 3 sent to the TBOX as a non-starting state, the TBOX sends a signal 1 to the KBCM after timing for 20s by the TBOX, and the KBCM sends a signal 2 to the ECM to start the engine;

7. judging whether ignition is successful again, if so, setting a coding value of an engine state signal 3 sent to the TBOX as a starting state by the ECM, if not, sending a TBOX signal 5 by the ECM, reminding a mobile phone APP of error reporting by the TBOX, not igniting again, and waiting for manual ignition when a vehicle owner arrives at the vehicle;

8. after the engine is started, the TBOX judges whether the water temperature of the engine and the electric quantity of the power battery reach target values, and if the water temperature and the electric quantity of the power battery reach the target values, the TBOX sends a signal 4 to the KBCM to control flameout.

Fig. 3 is a block diagram of an engine start control apparatus provided in an exemplary embodiment. As shown in FIG. 3, the engine start control apparatus 300 may include a receiving module 301, a first control module 302, and a second control module 303.

The receiving module 301 is configured to receive a reservation starting instruction sent by a user terminal.

The first control module 302 is configured to control starting of the engine when a first time period is reached after the vehicle is shut down if a reserved start instruction is received.

The second control module 303 is configured to control the engine to stall if the engine is started successfully and a stall condition is met.

Optionally, the reserved activation instruction includes a first duration.

Alternatively, the engine start control apparatus 300 may include a TBOX and an ECM.

The engine is started by TBOX after the vehicle is turned off, and the engine is started by ECM control when it is determined that the first time period has been reached.

Optionally, the ECM is further configured to set an engine state value sent to TBOX to a start state.

Optionally, the misfire condition comprises: the water temperature of the engine is larger than or equal to a preset temperature threshold value, and the electric quantity of the power battery is larger than or equal to a preset electric quantity threshold value.

Alternatively, the engine start control apparatus 300 may further include a third control module.

The third control module is used for restarting the engine after a preset second time length if the engine fails to start; and if the engine fails to be started again, sending an alarm message to the user terminal, and not starting the engine.

Alternatively, if the engine fails to start again, the ECM sets an engine state value sent to TBOX to an un-started state.

Optionally, the first control module 302 is further configured to control starting the engine every third interval until a predetermined number of starts is reached without controlling starting the engine.

Optionally, the reservation initiation instruction includes a third duration.

With regard to the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.

The present disclosure also provides an electronic device comprising a memory and a processor, the memory having stored thereon a computer program; the processor is used to execute the computer program in the memory to realize the steps of the above method provided by the present disclosure.

Fig. 4 is a block diagram illustrating an electronic device 400 according to an example embodiment. As shown in fig. 4, the electronic device 400 may include: a processor 401 and a memory 402. The electronic device 400 may also include one or more of a multimedia component 403, an input/output (I/O) interface 404, and a communication component 405.

The processor 401 is configured to control the overall operation of the electronic apparatus 400, so as to complete all or part of the steps in the engine start control method. The memory 402 is used to store various types of data to support operation at the electronic device 400, such as instructions for any application or method operating on the electronic device 400 and application-related data, such as contact data, transmitted and received messages, pictures, audio, video, and so forth. The Memory 402 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 403 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving an external audio signal. The received audio signal may further be stored in the memory 402 or transmitted through the communication component 405. The audio assembly further comprises at least one speaker for outputting audio signals. The I/O interface 404 provides an interface between the processor 401 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC for short), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, which is not limited herein. The corresponding communication component 405 may therefore include: Wi-Fi module, Bluetooth module, NFC module, etc.

In an exemplary embodiment, the electronic Device 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the engine start control method described above.

In another exemplary embodiment, a non-transitory computer readable storage medium including program instructions that, when executed by a processor, implement the steps of the engine start control method described above is also provided. For example, the computer readable storage medium may be the memory 402 including program instructions executable by the processor 401 of the electronic device 400 to perform the engine start control method described above.

In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the engine start control method described above when executed by the programmable apparatus.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure as long as it does not depart from the gist of the present disclosure.

Claims

1. An engine start control method, characterized by comprising:

receiving a reservation starting instruction sent by a user terminal;

and if the engine is started successfully and meets the flameout condition, controlling the engine to flameout.

2. The method of claim 1, wherein the reservation initiation instruction comprises the first length of time.

3. The method of claim 1, wherein controlling starting the engine when the first time period is reached after the vehicle is turned off comprises:

4. The method of claim 1, further comprising:

5. The method of claim 1, wherein the misfire condition comprises: the water temperature of the engine is greater than or equal to a preset temperature threshold, and the electric quantity of the power battery is greater than or equal to a preset electric quantity threshold.

6. The method of claim 1, wherein after the controlling starts the engine, the method further comprises:

7. The method of claim 6, further comprising:

8. The method of claim 1, wherein after the controlling the engine to stall, the method further comprises:

9. The method of claim 8, wherein the reservation initiation instruction comprises the third length of time.

10. An engine start control apparatus, characterized by comprising:

11. A non-transitory computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 9.

12. An electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 9.