Engine start-stop control method compatible with ACC system

Abstract

The invention relates to an engine start-stop control method compatible with an ACC system. The engine start-stop control method comprises the steps of checking whether ACC system calibration is started or not when an engine enters a critical stop state; if the ACC system calibration is not started, executing idle stop; and if the ACC system calibration is started, judging whether the ACC system allows stop or not, and conducting controlling according to a judgment result. By means of the control method, the situation that a traditional STT system cannot completely meet the start-stop requirement of the ACC system can be avoided, and logic disorder caused by the fact that multiple systems directly control the engine to stop is avoided; request signals of the ACC system are managed througha calibration quantity, and enabling and shielding of compatible functions of the ACC system are flexibly achieved; and based on a control strategy of the existing STT system, hardware does not need to be newly added, and only a software module compatible with the requirement of the ACC system for starting and stopping the engine needs to be newly added to software.

Description

technical field [0001] The present application relates to the technical field of automobile engine start-stop control, in particular to an engine start-stop control method compatible with an ACC system. Background technique [0002] With the development of automobile intelligent driving technology, some vehicles are equipped with ACC (Adaptive Cruise Control, adaptive cruise control) system. When the ACC system controls the braking of the vehicle, it usually limits the braking deceleration to a level that does not affect comfort. When a greater deceleration is required, the ACC control unit will send out an audible and visual signal to inform the driver to take the initiative to take the braking operation. [0003] The STT system (Start-Stop, start-stop system) is a system that controls the start and stop of the engine. By implanting a reinforced motor with idle start-stop function on the traditional engine, the engine is completely turned off and does not work when the car...

AI Technical Summary

Problems solved by technology

[0005] In related technologies, multiple systems directly control engine shutdown, leading to logic confusion

The traditional STT system cannot fully integrate the ACC system’s start-stop requirements: some directly ignore the ACC system’s prohibition shutdown requirements, some always suppress idle shutdown when the ACC system is configured, and some trigger shutdown by default when ACC allows shutdown condition

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