Gas flow control method and device of dual-fuel engine

Abstract

The invention provides a gas flow control method and device of dual-fuel engine. The method comprises the following steps: acquiring current revolving speed information and current power information of the engine and current open degree of a gas flow control valve; inquiring required open degree of the gas flow control valve in an MAP chart according to the current revolving speed information and the current power information; controlling through proportional integral according to the current open degree and the required open degree, and outputting a driving control signal so as to control the engine to run under the required open degree of the gas flow control valve, wherein the MAP chart is a relation chart of the revolving speed of the engine and the required open degree of the gas flow control valve. The method can effectively improve emission level of the engine on the premise of relatively low modification, application and maintenance costs.

Description

technical field [0001] The invention relates to the technical field of electronic control, in particular to a method and device for controlling gas flow of a dual-fuel engine. Background technique [0002] At present, with the implementation of high emission regulations such as National IV and National V and the strengthening of people's awareness of environmental protection, the pure diesel generator sets with electronic governors and mechanical pumps purchased early on the market have gradually failed to meet the current emission regulations. , facing the possibility of being eliminated. In addition, although the high-pressure common rail electronically controlled fuel injection system widely used in road vehicle diesel engines can meet the emission requirements of generator sets, the cost of replacement and maintenance is relatively high. [0003] Therefore, how to effectively improve the engine emission level has become an urgent problem to be solved under the premise o...

AI Technical Summary

Problems solved by technology

[0002] At present, with the implementation of high emission regulations such as National IV and National V and the strengthening of people's awareness of environmental protection, the pure diesel generator sets with electronic governors and mechanical pumps purchased early on the market have gradually failed to meet the current emission regulations. , facing the possibility of being eliminated

In addition, although the high-pressure common rail electronically controlled fuel injection system widely used in road vehicle diesel engines can meet the emission requirements of generator sets, the cost of replacement and maintenance is relatively high

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