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A method for judging the failures of diesel engine by sound rules

Update:2017-09-19 08:54Author:admin
A method for judging the failures of diesel engine by sound rules In the early years, diesel engine can only be used in need of big traction force of agricultural machinery, but nowadays with the development of diesel engine technology£¬ m
A method for judging the failures of diesel engine by sound rules
 
In the early years, diesel engine can only be used in need of big traction force of agricultural machinery, but nowadays with the development of diesel engine technology£¬ many imported cars have choice of car diesel engine. The design of the sound of the diesel engine is much more pleasant, because it is different from the gasoline engine in the structural characteristics, so it is easy to judge the fault by some characteristics. 
 
(1£©The continuous sound of diesel engine is usually the fault of rotating parts . the continuous sound often occurs in the timing gears, flywheel and other parts. 
 
(2) diesel engines emit no regular intermittent noise which means the engine accessories have fault, such as the alternator, starter, air compressor, water pump 
 
(3) diesel engine is rotating in a circle of abnormal sound which appears at the first time, with the crankshaft parts, such as piston, piston pin, piston and connecting rod bearing failure 
 
(4) diesel engine has an abnormal sound ,which is usually the fault of the cam shaft parts, such as valve, a push rod, valve spring and timing gear damage.  
 
(5) when the engine is running, if there is a rhythm and crisp " Dangdang" metal percussion sound which is generally incorrect in installating of the fuel injection timing gear, fuel injection pump 
 
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