Automotive electronic equipment cooling fluid temperature gauge, oil pressure gauge circuit

Published:2011/4/28 19:12:00 Author:Christina | Keyword: Automotive electronic equipment, cooling fluid temperature gauge, oil pressure gauge | From:SeekIC

In order to understand and control the car engine's working-situation, and to detect and eliminate the failure, cars are equipped with the automotive electronic equipment cooling fluid temperature gauge, oil pressure gauge. As the figure 6－38 shown, the circuit can displays engine coolant temperature and oil pressure. It is composed of the coolant temperature sensor w1 (Thermistor type), the oil pressure sensor w2 (bimetallic resistance-type), the lm339 and the red, yellow, green light-emitting diode monitor. The coolant temperature sensor is in the engine water-jacket, the coolant temperature measurement circuit is composed of the coolant temperature sensor and resistance r11. The oil pressure sensor is in the engine's main oil pipeline, and the oil pressure measuring circuit is composed of the oil pressure sensor and resistance r18. The automotive electronic equipment cooling fluid temperature gauge, oil pressure gauge circuit is as shown:



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