Automobile engine fault detection device and detection method

Abstract

The invention discloses an automobile engine fault detection device and detection method. The automobile engine fault detection device comprises a controller. A dual FlexRay bus transceiver circuit is connected with the controller via a FlexRay interface. An analogy quantity sensor unit is connected with the controller via an AD interface. A digital quantity sensor unit is connected with the controller via an ECT interface. The detection method comprises the steps that a system initialization module program is operated; the interruption condition is operated and an interruption task is performed; a main loop module program is operated; a FlexRay interface interruption program is operated; an AD interface interruption program is operated; and an ECT interface interruption program is operated. The technical problems in the prior art that description of a driver on the engine fault generated in the automobile driving process is mainly adopted in automobile engine fault detection, and automobile engine fault maintenance cost is high, labor hour consumption is high, the situation of leak detection of the fault exists and automobile driving safety is severely influenced in engine detection through a computer and a special tester can be solved.

Description

technical field [0001] The invention belongs to the technical field of intelligent automobiles, and in particular relates to an automobile engine fault detection device and detection method. Background technique [0002] Automobile engine is the power device of automobile. As the heart of automobile, automobile engine has complex structure, many parts and harsh working environment. It is one of the parts that are more prone to failure in automobiles. Key factor. When the electronic control system of the automobile engine breaks down, if these failures cannot be found and eliminated in time, it will easily affect the safety of the car and even endanger the lives of the driver and passengers; the traditional way to deal with engine failures is to According to the driver's description of engine failures during driving, the engine is tested by computer and special testers, especially for some transient and hidden failures that occur occasionally during engine operation. Howeve...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention: provide a kind of automobile engine failure detection device and detection method, to solve the problem that the automobile engine failure detection in the prior art mainly adopts the driver's description of the engine failure in the driving process, through the computer and special tester Detecting the engine, there are technical problems such as high cost of repairing the faults of the automobile engine, consuming a long time, and missing faults, which seriously affect driving safety.

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