高原高寒地域中重型车辆发动机预热起动辅助装置研究

摘要

目的 提高中重型车辆装备在高原高寒环境下的低温起动性能.方法 研制一种适应高原高寒地域低温低气压环境的冷却液加热器,加热器将燃油燃烧产生的热量传递给冷却液,通过冷却液的循环对发动机机体进行预热.结果 在低温试验室内-41℃常压环境下,使用冷却液加热器预热25 min后起动发动机,一次起动成功.在高原进行环境适应性试验,预热时间在25 min内,发动机一次起动成功.结论 发动机预热可有效提高-30~-41℃温度地域的发动机低温起动性能.%Objective To improve the starting performance of medium duty vehicles & heavy duty vehicles in plateau and severe cold area.Methods A type of fuel heater used in plateau and severe cold environment was designed. The hea-ter diffused the heat from combustion of fuel to the coolant to increase the temperature of the engine.Results In test room, the engine was started successfully within 25 min at-41℃ by using the fuel heater. In plateau and severe cold area, the engine was started successfully within 25 min by using the fuel heater.Conclusion The engine starting perfor-mance can be improved effectively by using the engine preheating equipment at-30~-41℃ .