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现代汽车上,发动机真空度越来越多地用作种种辅助设备的动力,如利用真空度控制着许多用于控制排放的装置、真空助力制动器、紧急制动释放器等。若发动机在一定工况下的真空度值偏离实际范围,这肯定是由一些故障引起的,在汽车维修作业中,若能方便地测得进气歧管的真空度,会给我们解决问题带来很大方便。可见,真空表是一个极好的故障诊断仪器,维修人员有必要掌握它。 为了更好地使用真空表,测试前首先必须严格地按照技术要求调整好初始点火正时与怠速极限值,如果这
In modern cars, the engine vacuum is increasingly being used as a power source for a wide variety of auxiliary equipment, such as vacuum control of many devices used to control emissions, vacuum booster brakes, emergency brake releasers and the like. If the engine under certain conditions, the value of the vacuum deviate from the actual range, which is certainly caused by a number of faults in the vehicle maintenance operations, if you can easily measure the intake manifold vacuum will give us to solve the problem with Very convenient. Visible, vacuum gauge is an excellent fault diagnosis equipment, maintenance personnel need to grasp it. In order to better use the vacuum gauge, the test must first be strictly in accordance with technical requirements to adjust the initial ignition timing and idle speed limit, if this