柴油机曲轴箱内积存废气过多,气压就会升高。试验表明,柴油机每工作1分钟,就有3千克的废气漏入曲轴箱内,随着活塞环、气缸套的磨损,漏气量逐渐增加,当气压高到一定值时,曲轴油封处出现渗油,气压再增高时,各机件接合处就出现明显的漏油。柴油机工作时,曲轴箱内的机油在废气压力下,从活塞环和气门导管处窜入燃烧室烧掉或从排气管喷出,严重时因烧机油 Excessive accumulation of diesel engine crankcase gas pressure will rise. Experiments show that every minute of diesel engine work, there are 3 kg of leaking into the crankcase exhaust, with the piston ring, cylinder liner wear and tear, the amount of air leakage increased, when the air pressure is high to a certain value, the crankshaft oil seal appeared infiltration Oil, air pressure and then increased, the joints of the obvious leakage occurred. Diesel engine work, the crankcase oil in the exhaust pressure, from the piston ring and the valve guide tube into the combustion chamber burned or discharged from the exhaust pipe, due to burning oil