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95QA系列机是参照国外产品自行开发研制的一种高速轻型车用柴油机,其中295QA和495QA型机分别获得1983年省优质产品和1986年、1987年云南省科技成果奖。 95QA系列机采用三环热流型活塞、彗星5号燃烧系统,使机体和配气机构刚度提高。由于可靠的配气相位和高次方配气凸轮、平切口短连杆、完善的冷却水流道设计、斜插齿轮式机油泵以及盒式油底壳等先进技术,使柴油机在高速运转中平稳可靠。选用优质材料制造零件,球铁曲轴经软氮化表面处理,气阀与阀座、凸轮与挺柱、涡流室镶块等对磨副材质优良、选配恰当,从而提高了柴油机的使用性能。 295QA和495QA型柴油机主要技术参数列于下表,曲线图示出柴油机性能特性。主要用途可分别作1～1.5吨级农用运输车和2～3吨级载货柴油汽车动
95QA series machine is a kind of high-speed and light-duty diesel engine developed by ourselves with reference to foreign products. Among them, 295QA and 495QA type machines won 1983 provincial quality products and Yunnan Province Science and Technology Achievement Awards in 1986 and 1987, respectively. 95QA series of machines using three-ring heat flow piston, the Comet No. 5 combustion system, the body and the valve body stiffness increased. Due to the reliable gas phase and the high-side gas distribution cam, flat-cut short connecting rod, perfect cooling water flow channel design, oblique gear gear oil pump and cassette oil pan and other advanced technology, the diesel engine at high speed stable reliable. Selection of high quality materials for the manufacture of parts, ductile iron crankshaft nitrocarburized surface treatment, valve and valve seat, cam and tappet, eddy chamber inserts, such as grinding on the Vice material quality, matching properly, thereby improving the performance of diesel engines. The main technical parameters of the 295QA and 495QA diesel engines are listed in the table below. The graphs show the performance characteristics of the diesel engine. The main purposes can be respectively for 1 to 1.5 tons of agricultural vehicles and 2 to 3 tons of diesel truck loading