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二、发动机电控燃油喷射系统水温传感器的工作原理水温传感器是利用热敏电阻的原理工作的,它与发动机ECU中的5V参考电阻(上拉电阻)串联工作,经过简化的原理图如图6所示。在由两个电阻串联后组成的分压电路中,上拉电阻固定不变,下拉电阻变化时会有两个方向的极端情况:1.下拉电阻为0,这时信号电压S
Second, the engine electrically controlled fuel injection system water temperature sensor works Water temperature sensor is the use of the principle of thermistor work, it and the engine ECU 5V reference resistor (pull-up resistor) in series work, simplified schematic diagram shown in Figure 6 As shown. In the voltage divider circuit composed of two resistors connected in series, the pull-up resistor is fixed, the pull-down resistor changes in two directions will have extreme conditions: 1. Pull-down resistor is 0, then the signal voltage S