Method for diagnosing and processing fault of throttle position sensor

Abstract

The invention relates to a method for diagnosing and processing a fault of a throttle position sensor. The method adopts that: when an engine idles, a throttle position sensor signal acquired by the ECU judgment is compared with a sensor signal; and if the throttle position sensor is judged to be faulty, an engine control unit executes an emergency measure to carry out emergency processing on vehicles. The method can detect the situation of the fault of the throttle position sensor in time to ensure driving safety of the vehicles.

Description

technical field [0001] The invention relates to an automobile fault processing method, in particular to a throttle position sensor fault diagnosis processing method. Background technique [0002] TPS (throttle position sensor, throttle position sensor, the same below) is the most important sensor in the electronic control system of automobiles, and is used in control systems such as engine electronic fuel injection, electronic ignition, automatic transmission, and cruise system. The role of the throttle position sensor is to convert the position and opening of the throttle into a voltage signal, and transmit this signal to the ECU (Engine control unit, engine control unit), as the basis for the ECU to judge the engine operating condition. If the throttle position sensor fails, the ECU must take certain measures to replace the normal driver's throttle command, so that the engine can continue to run with reduced power, so that the vehicle can be driven to the maintenance stati...

AI Technical Summary

Problems solved by technology

The patent of Korean Patent Application Publication No. KR100298747B discloses a method for diagnosing TPS faults, but this method must obtain the maximum and minimum values ​​for fault diagnosis during vehicle driving, which limits the use of this fault diagnosis method

And in the prior art, the processing method for the failure of the throttle position sensor does not consider whether other running parts of the automobile are operating normally, and all use the same fault handling measure, which will lead to the wrong operation of the ECU.

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