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近年来我国生产195型柴油机的一些厂家,采取了减少活塞环数目的新措施,将五环组活塞改为四环组活塞。按新图纸生产的活塞,取消了第二道油环槽,改装三道气环和一道油环。对于按老图纸生产的五环槽活塞,在装配时也只安装四道活塞环,而将第二道油环槽空着。有些机手,不了解其中缘故,维修时发现少装一道油环,还误认为工厂漏装了。有的机手则担心,少装一道油环后,会降低柴油机的工作性能。事实证明,这种担心是多余的。采用新式四环组活塞的195型柴油机,其动力性和经济性不但不降低,
In recent years, some manufacturers of 195 diesel engines in our country have adopted new measures to reduce the number of piston rings, and changed the piston of the pentacyclic group to the piston of the tetracyclic group. According to the new drawings produced piston, canceled the second oil ring groove, modified three gas rings and a oil ring. For the five-ring grooved piston produced according to the old drawing, only four piston rings are installed during assembly, and the second oil ring is empty. Some drivers, do not understand one of the reasons, maintenance, found less installed an oil ring, but also mistakenly believe that the factory missed the installation. Some machine drivers are worried that installing an oil ring will reduce the performance of the diesel engine. Facts have proved that this worry is superfluous. With the new type of piston ring 195 of the diesel engine, its dynamic and economic not only does not reduce,