Engine start and stop control system for automobile and control method of engine start and stop control system

Abstract

The invention discloses an engine start and stop control system for an automobile. The system comprises an information acquisition module, a judgment module and an executing module. The information acquisition module is provided with a first information acquisition sub-module used for acquiring the rotation speed of wheels, a second information acquisition sub-module used for acquiring the gear position of an automatic speed changer, and a third information acquisition sub-module used for acquiring the position of a braking device. The judgment module is used for judging whether the rotation speed of the wheels is zero or not, whether the automatic speed changer is located at a neutral position or a parking gear position, and whether the braking device is located at a braking position or not. The executing module is used for controlling an engine to be stopped or started according to the judgment result of the judgment module. According to the engine start and stop control system for the automobile, the requirement of an existing engine automatic start and stop technology for a special automobile automatic speed reducer is omitted, the engine automatic start and stop technology can be applied in a low-end automobile market, and the oil saving performance of low-end automobiles is substantially improved.

Description

technical field [0001] The present invention relates to the field of automobiles with automatic transmissions, more specifically, the present invention relates to a vehicle engine start-stop control system for such automobiles and a control method thereof. Background technique [0002] The automatic start-stop function of the engine in the prior art can bring excellent fuel-saving effect to the automobile, so it is widely used in the field of automobiles all over the world. [0003] Currently, in vehicles with automatic transmissions, the oil pressure to open the clutch is usually provided by a pump connected to the internal combustion engine. But it can't generate oil pressure when the vehicle is stopped, so it can't keep the clutch open. Therefore, in order to realize the automatic start-stop function of the engine in a vehicle with an automatic transmission, it is usually necessary to set a dedicated electric oil pump or a pressure storage device for it, that is, a speci...

AI Technical Summary

Problems solved by technology

Therefore, this automatic engine start-stop function for vehicles with automatic transmissions is only used in the high-end car market

Images