摘要
以某大功率柴油机为研究对象,采用仿真和试验相结合的方法,在保持动力性和经济性不变的条件下,通过燃烧过程优化研究,采用小口径直口ω形1#燃烧室和8×Ф0.42 mm的喷油嘴,将发动机最高燃烧压力从15.5 MPa降低到14.5 MPa以下,提高了发动机的可靠性;将发动机的过量空气系数从2.1降低到1.9以下,缩小了空气滤的体积,降低了整车的重量,提高了车辆的机动性和灵活性。
Using simulation method combined with experiment,the combustion process of a high power diesel engine was optimized.Under the condition of keeping the same engine power and economy,by using the small diameter straight-sided toroidal chamber（1# scheme） matched with the nozzle of 8× Ф0.42 mm,the peak combustion pressure in cylinder is reduced from 15.5 MPa to 14.5 MPa,and the excess air ratio is lowered from 2.1 to 1.9.As the results,the engine reliability gets better and the air filter size can be reduced,further improving the vehicle weight target,motility and flexibility.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2011年第3期32-36,共5页
Chinese Internal Combustion Engine Engineering
基金
国家自然科学基金项目(50876075)
教育部博士点基金项目(200800560040)
关键词
内燃机
高强化柴油机
燃烧过程优化
最高燃烧压力
过量空气系数
IC engine
high power diesel engine
combustion process optimization
peak combustion pressure
excess air ratio
