Heat engine idling speed setting method and device

Abstract

The invention discloses a heat engine idling speed setting method and device. The method comprises the steps of firstly calculating an initial idling speed matrix array of a target heat engine, obtaining an initial rotating speed torque matrix of the target heat engine according to the initial idling speed matrix array, further obtaining the combustion heat of the target heat engine, then, according to the obtained initial idling speed matrix array, the rotating speed torque matrix and the combustion characteristics, simulating vibration data of a power assembly of the target heat engine and vibration data of a whole vehicle part, and finally, according to the simulated vibration data of the power assembly of the target heat engine and the simulated vibration data of the whole vehicle part, setting idling speed value of the target heat engine. Visibly, when the idling speed value of the target heat engine is set, the vibration data of the power assembly of the target heat engine and the vibration data of the whole vehicle part are considered, so that the set idling speed value can be prevented from losing efficacy, and the reasonability of the idling speed setting result and the development efficiency of a whole vehicle are improved.

Description

technical field [0001] The present application relates to the technical field of engines, in particular to a method and device for setting idle speed of a thermal engine. Background technique [0002] The idling state refers to a working state when the engine is idling. In real life, if the engine idling speed is too low, the vehicle will stall when the vehicle stops temporarily. If the engine idling speed is too high, it will increase the fuel consumption, making The engine working temperature rises, which will accelerate the wear of the engine and cause damage to the vehicle. Therefore, it is necessary to set the idle speed value of the engine reasonably, especially for an engine with a rising water temperature (that is, a heat engine), it is even more necessary to pre-set a suitable engine idle speed. Value, in order to ensure that the vehicle runs smoothly and prolong the working life of the engine. [0003] At present, for the setting method of the idle speed of the wh...

AI Technical Summary

Problems solved by technology

In addition, since the idle speed value of the heat engine has a great influence on the calibration of the whole vehicle, the idle speed value is directly related to the acceleration, deceleration, throttle opening and ignition angle setting of the vehicle during driving. If the previously set idle speed value fails, Then the calibration work related to idle speed also needs to be restarted, which may affect the vehicle development time node

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