Diesel engine starting assistance system and method applicable to high attitude area

Abstract

The invention relates to a diesel engine starting assistance system and a diesel engine starting assistance method applicable to a high attitude area. The system comprises an auxiliary booster air intake pipe, low-pressure-ratio high-flow fluid machinery, an atmospheric pressure sensor, a cooling fluid temperature sensor and a control unit, wherein an air inlet is connected with the air intake end of a turbine booster air intake pipe and the air intake end of the auxiliary booster air intake pipe respectively through an air shunt valve; the air intake end of an intercooler is connected with the air exhaust end of the turbine booster air intake pipe and the air exhaust end of the auxiliary booster air intake pipe respectively through an air confluence valve; the low-pressure-ratio high-flow fluid machinery is arranged in the auxiliary booster air intake pipe; the air exhaust end of the intercooler is connected with the air intake end of an engine; the atmospheric pressure sensor is arranged at the air inlet; and the cooling fluid temperature sensor is arranged in a transmitter. Compared with the prior art, the diesel engine starting assistance system disclosed by the invention has the advantages that the start success rate of the engine at high altitude can be increased, and the start acceleration time of a low-compression-ratio diesel engine can be shortened, so that the diesel engine can enter a stable idling state more quickly.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to a starting auxiliary system and method for diesel engines suitable for high-altitude areas. Background technique [0002] Low compression ratio diesel engine is an important development trend in the field of diesel engines at present, mainly due to the stricter emission regulations at home and abroad, the diesel engine nitrogen oxide emission and particulate matter emission control technology has been vigorously developed, and the explosion pressure in the cylinder of the diesel engine after reducing the compression ratio The temperature and temperature have dropped, which can greatly reduce the emissions of nitrogen oxides and particulate matter from diesel engines. Another benefit of reducing the compression ratio of the diesel engine is that the mechanical load and heat load of the diesel engine are significantly reduced, which provides the necessary conditions for the ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a diesel engine starting assist system and method suitable for high altitude areas in order to overcome the above-mentioned defects in the prior art, which can improve the success rate of engine starting at high altitudes and shorten the starting liter of low compression ratio diesel engines. Acceleration time, so that the diesel engine enters the stable idling state faster, and solves the problem of difficult starting of the diesel engine at plateau

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