Exhaust system and method of low-pressure oil circuit

Abstract

The invention discloses an exhaust system and method of a low-pressure oil circuit. The exhaust system comprises a one-way valve and a low-pressure oil circuit assembly communicating with a high-pressure pump. An oil inlet of the one-way valve communicates with an oil outlet of the low-pressure oil circuit assembly. An oil outlet of the one-way valve communicates with an oil tank. The oil outlet of the low-pressure oil circuit assembly further communicates with an exhaust assembly. An oil outlet of the exhaust assembly communicates with the oil tank. An exhaust pipeline is formed from the oiloutlet of the low-pressure oil circuit assembly to the oil tank through the one-way valve, another exhaust pipeline is formed from the exhaust assembly to an oil tank through the low-pressure oil circuit assembly, and the two exhaust pipelines are in parallel connection. The exhaust system is simple in structure, modification made to the structure of an original automobile is small, meanwhile, low-pressure oil circuit exhaust is automatic, the using comfort is improved, in addition, low-pressure oil circuit exhaust is high in efficiency and good in effect, and normal start of an engine can beguaranteed.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to an exhaust system for a low-pressure oil circuit, and also relates to an exhaust method for a low-pressure oil circuit. Background technique [0002] At present, the world's industry is developing rapidly, and the transportation industry is one of the indispensable industries in the process of industrial development. Large trucks use diesel engines as vehicle engines. The air in the low-pressure oil circuit must be exhausted after the diesel engine is short of fuel or turned off, otherwise, the diesel engine will not start. [0003] In the prior art, the way of exhausting the low-pressure oil circuit includes manual mode and electric mode. Among them, the manual mode is to open the exhaust hole, and then press the manual exhaust pump to discharge the air, but this mode is cumbersome to operate and increases In addition, the electric method is to exhaust the air throu...

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Problems solved by technology

[0003] In the prior art, the way of exhausting the low-pressure oil circuit includes manual mode and electric mode. Among them, the manual mode is to open the exhaust hole, and then press the manual exhaust pump to discharge the air, but this mode is cumbersome to operate and increases In addition, the electric method is to exhaust the air through the electric fuel pump and the one-way valve. After the system is powered on, under the control of the timer, the electric fuel pump starts to work, and the one-way valve at the filter end opens. Realize the exhaust operation of the low-pressure oil circuit, but the one-way valve has a certain opening pressure and the exhaust hole on the valve is small, resulting in limited gas flow and incomplete exhaust

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