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气门杆与气门导管的配合间隙对发动机的机油消耗量有直接影响。我们曾做过这样的试验,一台S195型柴油机,当气门杆与气门导管的配合间隙超过磨损极限(0.3毫米)时,其机油消耗量为标准间隙的三倍之多。也就是说,在此种情况下由气门杆与气门导管的间隙所消耗的机油要比从活塞与气缸的间隙消耗的机油还要多。由此可见,控制气门杆与气门导管的配合间隙,使之保持最佳值,是降低柴油机机油比油耗的一个办法。于是,就涉及到了怎样正确测量气门杆与气门导管的配合间隙的问题。一般的修理厂都用下述方法测量气门杆与气门导管的配合间隙:即先用外
Valve stem and valve guide with the gap on the engine oil consumption has a direct impact. We have done such a test, a S195 diesel engine, when the valve stem and valve guide over the wear limit (0.3 mm), the oil consumption is three times the standard clearance. That is to say, in this case, the oil consumed by the gap between the valve stem and the valve guide pipe is consumed more than the oil consumed from the gap between the piston and the cylinder. Thus, the control valve stem and valve guide with the gap, so to maintain the best value is to reduce the diesel engine oil than fuel a way. Thus, it involves how to correctly measure the valve stem and valve guide with the gap. General repair shop using the following method to measure the valve stem and valve guide with the gap: that is used first