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Cold-booting auxiliary device for diesel engine and control method

An auxiliary control and auxiliary device technology, applied in engine control, fuel injection control, engine starting, etc., can solve problems such as lack of start-up auxiliary function, glow plug inoperability, and inability to adjust, so as to improve cold start performance, Effects of changing fuel supply advance angle, improving combustion and exhaust emissions

Inactive Publication Date: 2012-06-13
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the warm-up time of the glow plug used in diesel engines is fixed at present, and cannot be changed according to the change of ambient temperature, and it is only limited to the warm-up stage, and the glow plug does not work in the engine start-up stage and idling warm-up stage ;In addition, the fuel injection pump on the diesel engine adopts non-electrically controlled fuel injection, and its fuel supply advance angle at startup is fixed and cannot be adjusted, and it does not have a start-up auxiliary function

Method used

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  • Cold-booting auxiliary device for diesel engine and control method
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  • Cold-booting auxiliary device for diesel engine and control method

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Embodiment Construction

[0040] Explanation of related terms

[0041] Glow plug: also known as a glow plug, similar to the resistance wire heating of an electric kettle;

[0042] Idle speed: the lowest stable engine speed;

[0043] Fuel supply in advance: The theoretical fuel supply time of the engine starts when the piston reaches the uppermost end. In order to improve the combustion performance of the engine and reduce noise and vibration, it is generally necessary to supply oil in advance, that is, the oil supply starts when the piston does not run to the uppermost end. .

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in th...

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Abstract

An embodiment of this invention discloses a cold-booting auxiliary device for a diesel engine and a control method; because the cold-booting auxiliary method disclosed by this invention adjusts a heating time of a preheating plug according to an actual water temperature, the method disclosed by this invention realizes to adjust the heating time of the preheating plug according to change of an environment temperature and develops heating action at a stating stage and an idling warming-up stage, the temperature of a combustion chamber of an engine is increased, and combustion and tail gas emission of the engine can be improved obviously; simultaneously, an actual temperature and a position of a booting switch are detected so as to control a booting time and a diesel injection quantity of a diesel injection pump advancer, thus, a diesel supply advancing angle of the diesel engine is changed; when a water temperature is low, diesel injection of the diesel engine can be assisted so as to further improve cold-booting performance of the diesel engine; based on an above-mentioned method, the cold-booting auxiliary device disclosed by this invention improves the cold-booting performance of the diesel engine.

Description

technical field [0001] The invention relates to the field of diesel engine auxiliary equipment, more specifically, to a diesel engine cold start auxiliary device and a control method. Background technique [0002] The diesel engine belongs to the compression ignition method, and it is difficult to start cold at low temperature, so cold start auxiliary devices are needed, such as adopting various heating measures to increase the intake air temperature of the engine, the temperature of the engine oil, the temperature of the cooling water, and the temperature of the combustion chamber, etc., so as to improve The starting performance of diesel engine at low temperature. [0003] The low-temperature start-up performance of the diesel engine can be improved by using the cold start auxiliary device when the diesel engine is started. After the diesel engine has just started, it will take a while to heat up. At this time, the combustion of the diesel engine is not ideal, which direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N19/10F02D1/02
Inventor 张纪元黄丽玲王建军胡益聪韩景峰
Owner WEICHAI POWER CO LTD
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