Engine idle speed reduction oil saving method and device

A technology of engine speed and engine, applied in engine control, machine/engine, governor, etc., can solve the problems of poor starting performance, easy increase of flameout, reduced driving efficiency of drivers and user experience, etc.

Inactive Publication Date: 2016-06-15
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this solution will hardly increase the cost of the engine, it will lead to poor starting performance of the vehicle, that is, it is easy to increase the problem of stalling due to starting, reducing the driver's driving efficiency and user experience

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  • Engine idle speed reduction oil saving method and device
  • Engine idle speed reduction oil saving method and device
  • Engine idle speed reduction oil saving method and device

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] In the prior art, in order to ensure that the engine can start easily, the current idle speed of commercial vehicles is (600-750) rpm, but in fact, the minimum speed for stable engine operation can be as low as below 500 rpm. For example, an engine matching a cement mixer truck can stably drive a cement tank at a speed of 475 rpm. Therefore, when the vehicle is ...

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Abstract

The invention relates to an engine idle speed reduction oil saving method and device. The method comprises the steps that driving state information of a current vehicle, the rotation speed of an engine and current speed changing intention information of a driver are detected; whether the current vehicle is in an idle speed state or not is judged according to the driving state information and the rotation speed of the engine; and if yes, whether the rotation speed of the engine of the current vehicle is adjusted from the current first idle speed to a preset low idle speed or not is determined according to the speed changing intention information. The scheme can be achieved only by an electric control system of the engine, the production cost of the engine does not need to be additionally increased, the problem that as the starting performance of the vehicle is reduced, the user experience is reduced is avoided, and the functions of energy conservation and emission reduction can be achieved.

Description

technical field [0001] The invention relates to the field of engine control, in particular to a method and device for reducing the idle speed of the engine and saving fuel. Background technique [0002] Because of urban traffic congestion, waiting for traffic lights, parking, etc., or because long-distance bus drivers take a nap in the car in summer and need to turn on the air conditioner, the vehicle stays still and the engine idles for a long time. It is inevitable that the engine will idle for a long time. The engine idling for a long time will increase fuel consumption and pollutant emissions. [0003] In order to solve the above problems, an existing main technical solution is to adopt a start-stop system. However, since the start-stop system requires a special starter, and the engine needs to be started and stopped repeatedly, the tolerance of the start-stop system needs to be high, thus resulting in an increase in the cost of the engine. Furthermore, there is curren...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/02F02D31/00F02D41/08
CPCF02D29/02F02D31/001F02D41/08F02D2200/101F02D2200/501F02D2200/502F02D2200/60F02D2200/602F02D2700/07
Inventor 王贵琛吉学之秦伟张长冲徐胜辉
Owner WEICHAI POWER CO LTD
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