Vehicle control method, system and vehicle
A control method and control system technology, applied in the direction of engine control, combustion engine, machine/engine, etc., can solve the problems of unreasonable engine air intake, inability to guarantee engine air intake, and inability to meet engine air intake requirements, etc. Achieve the effect of improving work efficiency
Active Publication Date: 2019-10-01
GREAT WALL MOTOR CO LTD
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Problems solved by technology
The operating parameters of this valve are generally fixed, resulting in an unreasonable intake air volume under other operating conditions of the engine.
The non-continuously variable valve lift mechanism cannot meet the ideal intake air volume requirements of the engine under various operating conditions, that is, continuously changing the valve lift cannot guarantee the ideal intake air volume of the engine under various operating conditions
Method used
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Embodiment Construction
[0029] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0030] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0031] figure 1 is a flowchart of a vehicle control method according to an embodiment of the present invention.
[0032] Such as figure 1 As shown, the vehicle control method according to one embodiment of the present invention includes the following steps:
[0033] S101: Detect the water temperature of the engine.
[0034] In an embodiment of the present invention, the engine water temperature can be detected by a temperature sensor, and the temperature sensor has the advantage of low cost.
[0035] S102: Determine whether the water temperature of the engine is lower than a first preset temperature.
[0036] Wherein, the value range of the first preset temperature is but not limite...
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The invention provides a vehicle control method and system, and a vehicle. The vehicle control method comprises detecting the water temperature of an engine; determining whether the water temperature of the engine is lower than the first preset temperature; controlling a continuously-variable valve lift system to adjust the valve lift to the maximum lift and adjusting the air inflow of the engine through a throttle in dependence on the current operation condition of the engine when the water temperature of the engine is lower than the first preset temperature; and controlling the throttle to be adjusted to the maximum opening degree and adjusting the air inflow of the engine through the continuously-variable valve lift system in dependence on the current operation condition of the engine when the water temperature of the engine is larger than or equal to the first preset temperature. According to the invention, the air inflow of the engine under a plurality of conditions can be optimized, and therefore the working efficiency of the engine is improved.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle control method, system and vehicle. Background technique [0002] In related technologies, some gasoline engines adjust the intake air volume through a throttle valve, and others adjust the intake air volume through a valve lift mechanism. In the method of adjusting the intake air volume by changing the throttle opening, when the engine is in a light load condition, the throttle opening is small, and the vacuum behind the throttle is very large, which causes the engine to pump air during the ventilation process. The loss is great. In the way of adjusting the intake air volume through the valve lift mechanism, the valve timing of some valve lift mechanisms is determined by local optimization of engine performance based on a certain range of operating conditions, and the valve movement law is determined by the cam profile. . Such valve operating parameters are gene...
Claims
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IPC IPC(8): F02D9/02F02D13/02
CPCY02T10/12
Inventor 刘涛张文龙徐黎明胡佳佳尹吉李冠宇刘胜强房艳龙张华
Owner GREAT WALL MOTOR CO LTD