汽车真空度的理解与应用（Understanding and application of automobile vacuum）.docVIP

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汽车真空度的理解与应用（Understanding and application of automobile vacuum）.doc

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汽车真空度的理解与应用（Understanding and application of automobile vacuum）

汽车真空度的理解与应用（Understanding and application of automobile vacuum） Understanding and application of automotive vacuum technology; automotive technology; 2009-11-23 17:17:55 reading 228 review; 0: big and small The vacuum is generated by the engine piston in the working process, the reaction conditions can he an engine is normal when the fuel injection quantity is large, the vacuum negative pressure variable {his}, make the engine run smoothly and effectively, accelerate the fast response, the pointer table is more stable, the work of the engine in the reaction. So smooth, powerful, good acceleration. {the mixture is too thin and the vacuum is small For the car, the effect of the exhaust stroke during operation, is produced in the intake manifold vacuum, the vacuum is caused by each cylinder alternately in the intake process, intake manifold vacuum size and stability, and the speed of the engine, the number of cylinders, the possibility of ignition, combustible gas mixture the quality of vacuum size {} are closely linked, in addition, also by the throttle opening effect is proportional to the solar term door opening size is equal to the load of the engine, with a vacuum table detection engine intake manifold vacuum degree of the vacuum gauge, throttle back, start the engine under normal circumstances, are idle, change that can get value from the vacuum gauge in the vacuum, according to these values change, you can analyze and judge the fault of engine. Vacuum can detect engine fault range. 1, is the normal operation of the gasoline engine, must have three conditions, and a certain proportion of combustible gas. 2, it is a place that can make gas mixture, air intake, compression and combustion. 3, a standard ignition device is required. These three conditions are indispensable, and is closely linked to changes in second conditions with the engine intake manifold vacuum, and the first third conditions, there are indirect relationship, and the intake manifold vacuum change