Preheating gas admission method and device used for automobile cold-starting

Abstract

The present invention is preheating intake method and device for cold start of automobile. Alcohols or ethers are burnt to preheat air before the air is mixed with air intake to the engine. The auxiliary igniter set between the air inlet and the intake manifold of the engine includes one sealed cavity, one fuel inlet pipe connected between the fuel tank and the nozzle inside the sealed cavity, onepreheating evaporator in the fuel inlet pipe to heat the fed alcohol or ether fuel and to evaporate to form vapor flow in the nozzle and one igniting unit. By means of the auxiliary igniter, the alcohol or ether vapor and the air are mixed and ignited to produce high temperature fume, which is mixed with the main gas flow to raise the intake temperature of the automobile engine.

Description

technical field [0001] The invention relates to a method for preheating intake air for cold start of automobiles. [0002] The invention also relates to a preheating device for implementing the above method. Background technique [0003] The development of my country's automobile industry is facing the two major problems of oil shortage and environmental pollution. The consensus among scientists is to use methanol, ethanol and other alcohol fuels as oil alternative fuels. Considering the country's energy strategy, the purpose of using alcohol fuel as an alternative fuel for vehicles is to rationally utilize coal and biomass resources and ease the pressure on oil imports. Therefore, it is hoped that alcohol fuels can be used to replace gasoline and diesel as much as possible; from From an economic point of view, the price advantage of methanol fuel is the fundamental reason for the commercialization of methanol vehicles. The use of pure methanol can highlight the price advan...

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Problems solved by technology

[0008] Although the air intake preheating device burning alcohol fuel has the above-mentioned advantages, this method faces the following technical difficulties: first, it requires the burner to be able to start smoothly at low temperature; second, it requires the burner and heat exchanger The size of the device is small enough to be placed in the cabin of the car engine without affecting the daily maintenance of the engine; third, the device is required to have a simple structure, stable and reliable operation, and low cost, and is suitable as an accessory for mass-produced automotive engines

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