Engine start-stop control method

Abstract

The invention relates to the technical field of vehicles, and discloses an engine start-stop control method. The method comprises the following steps that: S11, a brake pedal is treaded; S12, the magnitude of a physical quantity is recorded when the current speed of a vehicle is not greater than a first preset speed, and the duration that the speed of the vehicle is not greater than a second preset speed is recorded when the current speed is reduced to the second preset speed until the duration is the maximum value of the physical quantity in a first preset duration and is an execution upper limit; S13, after the duration reaches the first preset duration, the current value of the physical quantity is a comparison value, and the variable quantity of the physical quantity in any second preset duration is an actual variable quantity; S14, if the comparison value is not smaller than the execution upper limit or the actual variable quantity is larger than a preset value, it is judged thata driver intends to shut down; and S15, if an engine meets a basic shutdown condition, the engine enters a shutdown state. According to the engine start-stop control method, the driving intention of the driver can be quickly recognized, and the working state of the engine is confirmed on the basis of judgment on whether the shutdown condition is met or not.

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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