CN-122014474-A - Vehicle control method and vehicle

CN122014474ACN 122014474 ACN122014474 ACN 122014474ACN-122014474-A

Abstract

The application relates to a vehicle control method and a vehicle, and belongs to the technical field of engines; the vehicle control method comprises the steps of judging whether an engine needs to be warmed up when a vehicle door unlocking signal is received, and controlling a heating component to warm up the engine by a vehicle body control unit when the engine needs to be warmed up. By advancing the trigger node of engine preheating to the time of unlocking the vehicle door, the time window for preparing the vehicle for getting on the vehicle by the driver is effectively utilized, the waiting time of the vehicle after powering on in the traditional process is shortened, the response speed and the operation convenience of the vehicle starting in the low-temperature environment are improved, and the user experience is improved.

Inventors

LIU YANG
LIU JIAN
WANG XIAOPENG
WANG ZONGBO
SUN XINXIN

Assignees

长城汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. A vehicle control method characterized by comprising: when a vehicle door unlocking signal is received, judging whether the engine needs to be preheated or not; When it is determined that the engine needs to be warmed up, the vehicle body control unit controls the heating member to warm up the engine.
2. The vehicle control method according to claim 1, characterized in that when it is determined that warm-up of the engine is required, it is determined whether or not a power-on signal is received by the vehicle body control unit; if the vehicle body control unit does not receive the power-on signal, the vehicle body control unit controls the heating component to preheat the engine; and if the vehicle body control unit receives a power-on signal, the engine control unit controls the heating component to preheat the engine.
3. The vehicle control method according to claim 2, wherein when the vehicle body control unit controls the heating member to warm up the engine, if the vehicle body control unit receives a power-on signal, the vehicle body control unit exits the control of the heating member, and the engine control unit takes over the control of the heating member by the vehicle body control unit.
4. The vehicle control method according to claim 3, characterized in that the engine control unit determines whether the engine needs to continue warming up, while taking over control of the heating member by the vehicle body control unit; If the engine needs to be continuously warmed up, the heating component is controlled to continuously warm up the engine; And if the engine does not need to be continuously warmed up, controlling the heating component to stop warming up the engine.
5. The vehicle control method according to claim 4, characterized in that the method of determining whether the engine needs to continue warming up includes the steps of: acquiring the current water temperature of the engine; comparing the current water temperature of the engine with a first threshold; If the current water temperature of the engine is higher than the first threshold value, judging that the engine does not need to be continuously warmed up; And if the current water temperature of the engine is lower than the first threshold value, judging whether the engine needs to be warmed up or not secondarily according to the warming-up information of the heating component.
6. The vehicle control method according to claim 5, characterized in that the secondary determination method of whether the engine continues to warm up includes the steps of: Acquiring the duration of the heating component controlled by the vehicle body control unit to preheat the engine, and recording the duration as a first preheating duration; If the first warming-up duration is smaller than the second threshold value, judging that the engine needs to be continuously warmed up; if the first preheating time length is greater than or equal to a second threshold value, further judging whether the engine needs to be continuously preheated or not.
7. The vehicle control method according to claim 6, characterized in that the secondary determination method of whether the engine continues to warm up when the first warm-up time period is equal to or greater than a second threshold value further includes the steps of: calculating a time interval between the last time and the current time of the heating component for preheating the engine by the vehicle body control unit; Comparing whether the time interval is greater than or equal to a third threshold; if the time interval is greater than or equal to the third threshold value, judging that the engine needs to be continuously warmed up; And if the time interval is smaller than the third threshold value, judging that the engine does not need to continue to warm up.
8. The vehicle control method according to claim 1, characterized in that the vehicle body control unit controls the heating member to stop warming up if a warming-up period of the engine reaches a set value while controlling warming-up of the heating member; and if the preheating time of the engine does not reach the set value, controlling the heating component to continue preheating.
9. The vehicle control method according to claim 1, characterized in that the method of determining whether the engine needs warming up includes the steps of: Acquiring the ambient temperature at the time of engine shutdown; Comparing the ambient temperature at the shutdown time with a fourth threshold; if the ambient temperature at the stopping time is greater than or equal to a fourth threshold value, judging that the engine does not need to be warmed up; if the environmental temperature at the stopping time is smaller than the fourth threshold value, acquiring the water temperature at the stopping time of the engine, the environmental temperature at the stopping time and the stopping time, and further judging whether the engine needs to be preheated or not.
10. A vehicle, characterized by comprising: a memory storing executable program code; a processor for calling and executing the executable program code from the memory, so that the vehicle executes the vehicle control method according to any one of claims 1 to 8.

Description

Vehicle control method and vehicle Technical Field The application relates to the technical field of engines, in particular to a vehicle control method and a vehicle. Background An engine is a power component of a motor vehicle that reliably initiates a direct determination of the normal driving and operating capabilities of the vehicle. In a low-temperature environment, the temperature of compressed air in an engine cylinder is reduced, the fuel atomization effect is poor, the viscosity of lubricating oil is increased, and the like, so that the engine is difficult to reach the conditions required for normal starting. In particular, diesel engines rely on compressed air to produce high temperatures so that diesel fuel is combusted, and in low temperature environments, the temperature of the compressed air in the engine cylinder cannot reach the ignition point of the diesel fuel, resulting in difficult starting. Existing diesel vehicles typically use a heating element such as a glow plug to heat the air in the cylinder to assist in starting. However, the heating components such as the glow plug and the like are heated and usually controlled to work by the engine control unit, and the engine control unit can normally work after the vehicle is electrified, and then the heating components such as the glow plug and the like are controlled to heat, so that a driver needs to wait for a period of time to finish preheating after the power is electrified, the overall time consumption of starting the vehicle is prolonged, the operation convenience is reduced, and the driving experience of a user is also influenced. Disclosure of Invention Aiming at the problems of engine preheating delay, long vehicle starting time consumption and the like in the prior art, the application provides a vehicle control method and a vehicle, the vehicle body control unit controls the heating component to carry out preheating operation through the judging flow of starting the engine preheating requirement in the unlocking stage of the vehicle door, the engine control unit is not required to start preheating after the vehicle is electrified, so that the starting time of preheating is effectively shortened, the overall starting time consumption of the vehicle is shortened, the convenience of vehicle operation is improved, and the driving experience of a user is improved. In a first aspect, the present application provides a vehicle control method including: when a vehicle door unlocking signal is received, judging whether the engine needs to be preheated or not; When it is determined that the engine needs to be warmed up, the vehicle body control unit controls the heating member to warm up the engine. According to the embodiment of the application, whether the engine needs to be warmed up or not is judged when the driver unlocks the vehicle door, so that the trigger node for warming up the engine is advanced to the time when the vehicle door is unlocked, the waiting time of the driver after the vehicle is electrified is shortened, the response speed of starting the vehicle is improved, and the starting experience of a user in a low-temperature environment is improved. The heating component is controlled by the vehicle body control unit to perform preheating operation, the engine control unit is not required to start a preheating process after the vehicle is electrified, the starting time of preheating is effectively shortened, and the starting time of the whole vehicle is shortened. With reference to the first aspect, in certain implementation manners of the first aspect, when it is determined that the engine needs to be warmed up, it is determined whether the vehicle body control unit receives a power-on signal; If the vehicle body control unit does not receive the power-on signal, the vehicle body control unit controls the heating component to preheat the engine; If the vehicle body control unit receives the power-on signal, the engine control unit controls the heating component to preheat the engine. In the embodiment of the application, the vehicle body control unit does not receive a power-on signal to indicate that the engine of the vehicle is not started, at the moment, the engine control unit does not power on and cannot control the heating component to work, the vehicle body control unit controls the heating component to preheat the engine so as to carry out preheating work in advance before the engine is started, thus the engine can be directly started or the waiting time of a driver for preheating can be reduced when the engine is started, the vehicle body control unit receives the power-on signal to indicate that the engine of the vehicle is started, the engine control unit powers on, the engine control unit controls the heating component to preheat the engine, the smoothness and the reliability of the engine preheating process are ensured, the engine can be ensured to quickly reach the conditions required by normal starting in a