Control system for automatic start-stop of engine

Abstract

The invention provides a control system for automatic start-stop of an engine. The control system comprises a start-stop control module, a start enabling switch, a stop enabling switch and an electronic control module. According to the control system provided by the invention, factors such as vehicle safety, emission, engine reliability and vehicle comfort level are sufficiently taken into consideration according to gas cylinder pressure parameters, storage battery electric quantity parameters, SCR urea box thawed state parameters, SCR catalyst upstream temperature parameters, air-condition state parameters and engine idle-speed heat dissipation time parameters, so that the problems such as potential safety hazards of a vehicle, engine service life attenuation and discharge efficiency decrease as a result of frequency start and stop are solved; and moreover, according to the control system, an automatic start function and an automatic stop function can coexist and also can individually exist.

Description

technical field [0001] The invention relates to the technical field of engine control, and more specifically, relates to a control system for automatic engine start and stop. Background technique [0002] With the continuous development of society, automobiles have been widely used in people's daily life, but it is found through investigation that in the running state of urban vehicles, the engine is idle for more than 30% of the time, which increases the consumption of fuel or gas. At the same time, a large amount of exhaust pollutants are also produced. [0003] In order to solve the above problems, those skilled in the art have realized the engine start-stop technology according to the automatic start-stop switch, hand brake, foot brake, clutch state, vehicle speed, gear position and throttle opening. [0004] However, it does not take into account the safety pressure of the gas cylinder, the SCR after-treatment system, the idling time of the engine after high-speed oper...

AI Technical Summary

Problems solved by technology

[0004] However, it does not take into account the safety pressure of the gas cylinder, the SCR after-treatment system, the idling time of the engine after high-speed operation, and the status of the air conditioner switch. In the process of frequent start and stop, there will be certain safety factors, which will affect vehicle emissions and engine reliability. performance and vehicle comfort

[0005] Moreover, the automatic start-stop switch is closed or disconnected only to realize that the start-stop function works or neither works, and it cannot only retain the automatic start function or the automatic stop function

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