Engine start-stop control method and device

Abstract

The invention provides an engine start-stop control method and device. According to the traffic light information of an intersection where a vehicle is located, the driving state of the vehicle is predicted, when the predicted vehicle needs to stop for a long time, an engine is turned off in time, an electronic handbrake is automatically pulled up, the resource loss caused by engine starting during long-time parking is avoided, the energy-saving and emission-reducing efficiency is improved, and the vehicle is guaranteed not to slide off; and when the predicted vehicle is about to be started, the engine is started in advance, the electronic handbrake is automatically released, the stability of the starting is improved, and the driving experience of a driver is improved.

Description

technical field [0001] The present invention relates to the technical field of automotive electronics, and more specifically, to a method and device for controlling engine start and stop. Background technique [0002] The engine start-stop technology means that when the engine control system judges that it is currently in a parking state and the engine can be turned off, the engine is turned off, and when it is judged that the vehicle needs to continue driving, the engine is started, so as to achieve the effect of energy saving and emission reduction. Since the start-stop control technology has a good effect on energy saving and emission reduction, it is more and more used in smart cars. [0003] The existing engine control system generally judges whether to turn off the engine according to the time when the vehicle is in the parking state, for example, the engine is turned off if the parking state exceeds the set time. However, this start-stop control method is likely to c...

AI Technical Summary

Problems solved by technology

However, this start-stop control method is likely to cause the problem that the engine is not turned off in time. For example, when the traffic light is red when parking, it is necessary to wait for the set time to turn off the engine. It is necessary to restart the engine immediately. In this case, it will not only cause unnecessary resource consumption, but also affect the driver's driving experience because the engine shutdown time is too short.

[0004] And in the prior art, the start-stop control of the engine and the control of the electronic handbrake are generally two independent control systems. The driving system releases the electronic brake, and the transmission system accelerates. The combination of the vibration when the engine starts, the release of the electronic handbrake and the acceleration from stationary to forward driving will generate greater vehicle vibration, reduce ride comfort, and affect driving experience.

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