摘要
针对电控高压共轨柴油机因低压油路存气导致发动机起动困难问题,设计制作不同结构形式的低压燃油系统自动排气方案,并对方案进行试验验证。结果表明:粗滤器上带排气孔可有效排出粗滤中的空气,在输油泵后的精滤器上增加排气单向阀,能够排出精滤器中的空气,较好地提高柴油机起动性能。
Aiming at the problem of engine starting difficulty caused by low-pressure fuel circuit storage of electronically controlled high pressure common rail diesel engine, automatic engine degassing of low-pressure fuel system with different structure is designed and tested. The test results show that vent holes can effectively discharge the air in the coarse filter, and an exhaust one-way valve added to the fine filter behind the fuel pump can discharge the air in the fine filter and better improve the starting performance of the diesel engine.
作者
郝其山
范宁霞
刘俊杰
HAO Qishan;FAN Ningxia;LIU Junjie(State key Laboratory of Reliability of Engine,Weifang 261060,China;Weichai Power Co. ,Ltd. , Weifang 261061,China)
出处
《内燃机与动力装置》
2019年第1期73-79,共7页
Internal Combustion Engine & Powerplant
关键词
燃油滤清器
自动排气
单向阀
fuel filter
automatic degassing
one-way valve
