摘要
针对某型煤矿井下用防爆柴油机的原有冷却系统进行了分析研究，提出了防爆柴油机本体冷却循环与水冷增压器一排气冷却循环系统双循环的改进方案。通过防爆柴油机热平衡试验对防爆柴油机改进前后的冷却系统进行了试验验证，并对试验结果进行了对比。研究结果表明：改进后的冷却系统进出口温差降低了50％～85％，冷却效果更好，柴油机工作温度更合理；防爆柴油机的水冷增压器、水冷排气管等高温件的表面温度降低了3%～9％，远优于防爆柴油机要求的150℃，更安全可靠；防爆柴油机的最大功率提高了5．5％，燃油消耗率平均下降了3．6％。
To solve problem of mine diesel engine frequently ＂boiling＂, analyzed original cooling system of a flameproof diesel engine for coal mine, an optimized scheme of double circuits （engine cooling circuit and supercharger and exhaust cooling circuit） was put forward. Heat balance tests of flameproof diesel engines equipped with original cooling systems and optimized one are tested and compared. Results show that for optimized cooling system, the temperature difference between inlet and outlet reduces by 50%-85%, exhibiting better cooling effect and engine operating temperature; surface temperatures of engine thermal parts, supercharger and water cooled exhaust pipe etc., decrease by 3%- 9%, further away from the flameproof engine limit of 150℃, so more safe and reliable; the maximum engine power increases by 5.5%, specific fuel consumption reduces by 3.6% on average.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2015年第2期111-115,共5页
Chinese Internal Combustion Engine Engineering
关键词
内燃机
防爆柴油机
冷却系统
改进设计
热平衡
防爆要求
IC engine
flameproof diesel engine
cooling system
optimizationdesign
heat balance
flameproof requirement
