P07.04-3019-79
1 | Charge air temperature sensor upstream of throttle valve |
Overview
This document contains information on:
General
Location
Function
General
The charge air temperature sensor upstream of the throttle valve provides an electrical signal from which the charge air temperature can be determined. The air mass can be calculated in combination with the absolute pressure in the intake manifold and the rpm signal.
Location
The charge air temperature sensor upstream of the throttle valve is located in the charge air pipe upstream of the throttle valve.
Function
The electrical resistance of the NTC precision resistor varies according to charge air temperature. Electrical resistance decreases as temperature increases. The resistance variation results in a voltage change that is used by the combustion engine control unit to calculate the charge air temperature.
The charge air temperature sensor upstream of the throttle valve contains a NTC precision resistor as an electrical component for measuring the charge air temperature.
NTC (Negative Temperature Coefficient): The electrical resistance falls as the temperature increases (NTC thermistor).