A kind of engine start-stop control method

Abstract

The present invention relates to the technical field of vehicles, and discloses an engine start-stop control method, comprising the following steps: S11, step on the brake pedal; S12, the current vehicle speed of the vehicle is not greater than the first preset speed, record the size of the physical quantity, the current vehicle speed drops When reaching the second preset speed, record that the vehicle speed of the vehicle is not greater than the second preset speed, until the maximum value of the physical quantity in the first preset time is the upper limit of execution; S13, after the time reaches the first preset time, the physical quantity The current value of the current value is the comparison value and the variation of the physical quantity in any second preset time length is the actual variation; S14, the comparison value is not less than the execution upper limit or the actual variation is greater than the preset value, then it is determined that the driver has the intention to stop; S15, the engine enters the shutdown state when the basic shutdown condition is satisfied. The engine start-stop control method disclosed in the present invention can quickly identify the driving intention of the driver and combine it with whether the stop condition is met, so as to confirm the working state of the engine.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to an engine start-stop control method. Background technique [0002] Engine start-stop technology is a technology that stops the engine of the vehicle when the vehicle is temporarily parked in order to optimize the fuel economy of the vehicle. This technology does help reduce fuel consumption and eliminate vehicle vibration caused by engine idling when the vehicle is temporarily parked for a long time. Because the stop control method cannot accurately identify the driver's driving intention and driving conditions, the engine start and stop function is often activated by mistake, resulting in frequent engine stop and start, which will not only cause complaints from the driver, but may also cause serious damage to the engine. System-related hardware devices, such as starters and engines, cause certain damage. It is precisely because of the above reasons that a considerable proport...

AI Technical Summary

Problems solved by technology

This technology does help reduce fuel consumption and eliminate vehicle vibration caused by engine idling when the vehicle is temporarily parked for a long time. Because the stop control method cannot accurately identify the driver's driving intention and driving conditions, the engine start and stop function is often activated by mistake, resulting in frequent engine stop and start, which will not only cause complaints from the driver, but may also cause serious damage to the engine. System-related hardware equipment, such as starters and engines, causing certain damage

It is precisely because of the above reasons that a considerable proportion of drivers will choose to completely turn off the engine start and stop function through the switch at the first time when starting the vehicle, resulting in a waste of vehicle configuration resources

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