This article provides engine coolant temperature sensor pdf on a coolant temperature sensor, how it works and how to check the temperature specificity of this sensor. A coolant temperature sensor is confined to the engine of a vehicle.
This device measures the temperature of the vehicle’s engine coolant. The ECU then responds to a change in the temperature difference and readjusts the engines fuel injection. A coolant sensor is similar to a thermistor, based on the working principle that a change in electrical resistance will be a direct product of a change in the temperature to a wire carrying a current. In Figure 1, illustrates the main circuitry to the coolant temperature sensor. With a coolant temperature sensor, the full sensor is located in a coolant passage that sits before a thermostat and is connected to the engine control and monitoring unit.
Structural features to the temperature coolant sensor. USA, New York: Thomas Delmar Learning. The coolant temperature sensor is fastened to the intake manifold of an engine coolant and is often referred to as a negative temperature coefficient type of sensor. In terms of resistance capacity, this coolant sensor has 20,000 ohms at 248 degrees Fahrenheit. A basic functional principle to a coolant temperature sensor begins with the ignition switch.