发动机积碳的检查方法（An inspection method for the carbon of an engine）.docVIP

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发动机积碳的检查方法（An inspection method for the carbon of an engine）.doc

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发动机积碳的检查方法（An inspection method for the carbon of an engine）

发动机积碳的检查方法（An inspection method for the carbon of an engine） An inspection method for the carbon of an engine An inspection method for the carbon of an engine. How do you know that the engine produces carbon? You might think that you take the engine apart, and then you look at it, and you look at it, and you clean it up. Is that good? This is the best way to get rid of carbon. However, this method is the most expensive and the longest, and the user is not likely to allow you to take such a long time. At the same time, each disassembly will affect the service life of an engine, so disintegration is not the best method. In general, we can use this method, just to look at it, to take the spark plug away and you can see the carbon inside the cylinder, take off the fuel injector, and you can see the carbon in the valve and the inlet. There is also a way to use test equipment to see the oxygen sensor voltage through the device. Normally, the voltage of the normal oxygen sensor varies between 0.3 and 0.7 V. When carbon is overgrown, it affects the adjustment cycle of the mixture and develops to the two sides, which can change to the most dilute and the most intense. This is because the carbon is constantly absorbing and releasing the fuel, affecting the adjustment cycle, the period is longer and the voltage increases. At this time, the oxygen sensor voltage varies between 0.1 and 0.9 V, while the normal value should change from 0.3 to 0.7 V, and the central value should be 0.45 V. With the production of carbon, it becomes 0.2-0.8 V, which has already produced carbon, but it is not very serious. When it reaches 0.1 ~ 0.9 V, the carbon product is very serious. Sometimes it stops at 0.9 V or 0.1 V for a long time, and then the computer discovers that the oxygen sensor is defective and the oxygen sensor fails. We could have been able to know that the carbon is produced by testing the voltage of the oxygen sensor before we get to that point. Usually check the voltage at idle s