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oil pressure sensor function
The function of the sensor is to monitor, and the oil pressure sensor is naturally used to detect the oil pressure. Once the oil pressure is not enough, it will alarm. However, if the sensor fails, it won't affect your fueling, but it won't monitor the oil pressure either. Once a problem occurs, it can also lead to engine failure, so be sure to know how the oil pressure sensor is bad.
1. The oil pressure sensor uses you to detect the oil pressure. When the pressure is insufficient, it will alarm and the oil lamp on the instrument panel will light up. If there is no sensor, the engine will be irreversibly damaged when there is a problem such as lack of oil, so the oil pressure sensor plays a vital role. When the engine is in various speed states, if there is no pressure indication on the oil pressure gauge, it means that the oil pressure sensor is damaged or the engine lubrication system is faulty. If the engine has not been started after the ignition switch is turned on, the pointer of the oil pressure gauge has moved to the maximum pressure value, indicating that the oil pressure gauge is grounded to the sensor lead, etc. Or the internal ground of the oil pressure sensor.
2. If the oil pressure indicator does not go out after the engine is running, it means that the switch of the oil pressure sensor is damaged. Or the alarm indicator light goes to the sensor switch ground. If the short shows OK, it means your sensor is a normally open switch output. The switch has only two states. If there is oil in the chassis but the sensor still has no output, it means the sensor is damaged.
3. See if your sensor is double-wired. If yes, connect a small bulb (5-24V) in series and see if the bulb turns on. If not, the sensor is bad (if there is oil). If the sensor is broken, it will naturally need to be replaced, and the workload is still very small.
Fourth, the door potentiometer pressure sensor diesel engine is lubricated by lubricating oil. Once the lubricating oil pressure is too low, dry friction will occur due to lack of oil, causing serious wear and heat, thus damaging the diesel engine. Therefore, all diesel engines are equipped with an oil pressure measuring device to monitor the oil pressure. At present, Cummins diesel engines mostly use potentiometer-type pressure sensors to measure oil pressure. The sensor consists of a corrugated diaphragm and a sliding wire potentiometer. When the diesel oil pressure changes, the corrugated diaphragm is displaced, which drives the contacts on the potentiometer to slide, thereby changing the resistance value. The sensor of the one-wire system has one terminal where the potentiometer is wired to the diesel control unit or the oil pressure indicator and the other pole is grounded.
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