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正确地测定曲轴箱申的窜气量比根据机油烧损量更能精确地反映出气缸—活塞组零件的磨损情况,因此目前大力推广这种方法。测定发动机曲轴箱窜气量须用专用的仪器—KH—4887—1型气体流量仪。 KH—4887—1型气体流量仪与其它一些仪器相比之所以获得广泛应用,是因为它可在背压为大气压力的情况下从曲轴箱中吸取废气,以而能足够精确地测定出曲轴箱中的窜气量。该检查仪的工作原理是:
Correctly determining the amount of blow-by gas in the crankcase is more accurate than the burn-in of the cylinder-piston assembly, reflecting the wear of the cylinder-piston assembly. Therefore, this method is currently being promoted. Determination of engine crankcase blow-by gas use special equipment-KH-4887-1-type gas flow meter. KH-4887-1-type gas flow meter and other instruments compared to a wide range of applications, because it can back pressure at atmospheric pressure from the crankcase to extract exhaust gas, which can be accurately enough to determine the crankshaft The amount of gas in the box. The working principle of the tester is: