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Start control method of gas engine adapting to change of concentration of methane

A gas engine, methane concentration technology, applied in the direction of engine control, combustion engine, internal combustion piston engine, etc., can solve problems such as difficulty in starting, and achieve the effect of solving difficulty in starting and starting quickly

Inactive Publication Date: 2019-02-12
GUANGXI YUCHAI MASCH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0012] The object of the present invention is to provide a gas engine start-up control method with simple and reasonable steps and self-adaptive to the change of methane concentration. The change is programmed, and the biogas engine starts quickly, effectively solving the difficult problem of starting caused by the change of methane in biogas

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  • Start control method of gas engine adapting to change of concentration of methane
  • Start control method of gas engine adapting to change of concentration of methane

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Embodiment Construction

[0021] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0022] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0023] Such as figure 1 As shown, the gas engine start-up control method for adaptive methane concentration change according to the preferred embodiment of the present invention realizes automatic detection of methane concentration change in biogas, programming of adaptive methane concentration change, fast start-up of biogas engine, and effectively solves problems caused by methane concentration in biogas. Difficulty star...

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Abstract

The invention discloses a start control method of a gas engine adapting to the change of the concentration of methane. The start control method of the gas engine includes the following steps that firstly, before the engine is started, a methane concentration signal in marsh gas in a pipeline is measured through a methane concentration sensor; then a control unit judges whether a methane concentration value is within the range meeting the requirement of the gas engine or not by monitoring a feedback value of the methane concentration sensor, and when the methane concentration value is proper, an ECU queries a target opening value of an electronic control mixer according to the methane concentration value and a target value of the mixing ratio of the marsh gas and fresh air; and finally, thecontrol unit calls the target opening value of the electronic control mixer to adjust the opening of an inlet valve of the electronic control mixer for start. By means of the start control method ofthe gas engine, detection automation of the change of the concentration of the methane in the marsh gas is achieved, adaption to the change of the concentration of the methane is programmed, the marshgas engine is rapidly started, and the problem that the gas engine is difficult to start as the concentration of the methane in the marsh gas changes is effectively solved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a start-up control method of a gas engine adaptive to changes in methane concentration. Background technique [0002] With the country's emphasis on environmental protection, local governments have increasingly strengthened the supervision of farm sewage, coupled with the country's advocacy of distributed energy, more and more farms have begun to build a large number of biogas digesters to ferment livestock manure And eventually turn into electricity utilization, this distributed energy application method is very suitable for farms that are far away from urban areas and cannot provide mains power. Therefore, biogas engines using biogas as the combustion medium are increasingly favored by farms. Its working process is as figure 1 Shown: the sewage of animals or living water is fermented in a biogas digester to produce biogas. After biogas pretreatment (desulfurization and water removal), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D19/02F02D41/00
CPCF02D19/023F02D19/029F02D41/0027Y02T10/30
Inventor 王家祥莫员李庆飞曾志龙金伟张发雄吕亦文
Owner GUANGXI YUCHAI MASCH CO LTD
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