Methanol engine cold start air inlet pipe device and control method thereof

Abstract

The invention belongs to the technical field of vehicle engine control, and particularly relates to a methanol engine cold start air inlet pipe device and a control method thereof. Comprising a methanol engine water temperature sensor arranged in a methanol engine water jacket, a cold start methanol fuel injector and a methanol fuel injector, wherein the cold start methanol fuel injector and the methanol fuel injector are arranged in a methanol engine air inlet pipe; the methanol engine water temperature sensor is in signal connection with the methanol engine electronic control unit ECU, and the methanol engine electronic control unit ECU controls the cold start methanol fuel injector and the methanol fuel injector. Combustion and emission can be controlled in the starting process of the methanol engine, and the performance of the methanol engine in the cold starting process is fully improved.

Description

technical field [0001] The invention belongs to the technical field of vehicle engine control, in particular to a methanol engine cold-start intake pipe device and a control method thereof. Background technique [0002] With the increasingly stringent requirements for energy saving and emission reduction, a variety of clean fuels are used in automobiles, such as new formula gasoline, ethanol, biodiesel, natural gas methanol, hydrogen, etc. Among them, methanol is a recognized clean energy with fast combustion rate, anti-corrosion The characteristics of good explosiveness, low pollution and no smoke exhaust are the preferred options for automobile alternative fuels. Research on methanol engines has been carried out as early as the last century. The related technologies of methanol engines have developed to a certain extent, but there are still many problems, such as Mechanism of combustion and low emission of methanol, life and reliability of alcohol-resistant key components,...

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Problems solved by technology

[0002] With the increasingly stringent requirements for energy saving and emission reduction, a variety of clean fuels are used in automobiles, such as new formula gasoline, ethanol, biodiesel, natural gas methanol, hydrogen, etc. Among them, methanol is a recognized clean energy with fast combustion rate, anti-corrosion The characteristics of good explosiveness, low pollution and no smoke exhaust are the preferred options for automobile alternative fuels. Research on methanol engines has been carried out as early as the last century. The related technologies of methanol engines have developed to a certain extent, but there are still many problems, such as Mechanism of combustion and low emission of methanol, life and reliability of alcohol-resistant key components, cold start of methanol engine, etc.

[0003] In order to promote the application of clean energy such as methanol in automobiles, it is necessary to carry out technical transformation on the engine so that it can gradually adapt to methanol as a fuel. One of the most important issues is the cold start of methanol engines in low temperature environments. Due to the large latent heat of vaporization of methanol fuel, the starting ability of methanol engines is weak in low temperature environments, especially below minus 15°C

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