Idling dormancy control method and system for engine

Abstract

The invention relates to an idling dormancy control method and system for an engine. The method comprises the steps that whether working signal input of the engine exists or not is detected; if working signal input is still not detected after the engine is successfully started and after a first preset period of time, the engine is controlled to enter a dormancy idling working condition; and otherwise, the engine is controlled to operate at a preset rotation speed according to the working signal input of the engine. By the adoption of the idling dormancy control method and system for the engine, whether the engine is under the working condition or not can be judged by judging whether working signal input exists or not, and accordingly whether an idling dormancy function is achieved or not is judged automatically; and the situation that the idling dormancy function is achieved only through triggering by pressing a switch manually is avoided, so that array position resources of a controller are saved, and an intelligent automatic triggering judgment mechanism is achieved.

Description

technical field [0001] The present invention relates to the field of engineering machinery, in particular to an engine idling sleep control method and system. Background technique [0002] The idling state refers to a working state when the engine is idling. In real life, if the engine idle speed is too low, the car will stall when it temporarily stops (such as stopping at a red light, turning a car, and decelerating). However, if the engine idle speed is too high, it will increase the fuel consumption, increase the operating temperature of the engine, accelerate the wear of the engine, and there will be a loud impact sound when changing gears, which will cause great damage to the car. Therefore, the idle speed must be adjusted to an appropriate range in order to ensure the smooth running of the car and prolong the working life of the engine. [0003] In the prior art, the engine enters the idling dormancy function by manually controlling multiple sets of working switches ...

AI Technical Summary

Problems solved by technology

However, it is obvious that using multiple sets of working switches occupies too many controller pins, which wastes resources, and because the control strategy of the idle speed is not strict enough, the idle speed cannot be changed, and there is no minimum idle speed protection, which will cause the engine to stall when the idle speed is too low, and The self-test of the sleep function is not considered, and the engine safety is not guaranteed

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