Testing system and method for electronic control unit of automobile engine

Abstract

The invention discloses a testing system and a testing method for an electronic control unit of an automobile engine. The testing system comprises a signal simulation unit, an electronic control unit, a load unit and a monitoring unit, wherein the signal simulation unit is connected with the electronic control unit by a motor wiring harness and used for simulating cranking signals and cam signals generated when a motor operates according to an externally-input rotate speed and sending the cranking signals and the cam signals to the electronic control unit; the electronic control unit is used for acquiring on-load running control signals according to the cranking signals and the cam signals as well as control parameters and sending the on-load running control signals to the load unit; the load unit is an actual engine component, connected with the electronic control unit by the motor wiring harness and used for executing action according to the on-load running control signals sent by the electronic control unit; and the monitoring unit is used for monitoring the states of the electronic control unit and the load unit, and sending the control parameters input by the user to the electronic control unit in a calibration state. The testing system and the testing method can simultaneously carry out off-vehicle test on the ECU (electronic control unit) and use the actual engine component to compensate for the reality insufficiency existed of the traditional off-vehicle test so as to achieve the effect of carrying out reliable, low-cost and local test on the ECU (electronic control unit).

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to a test system and a test method for an electric control unit of an automobile engine. Background technique [0002] There are two main ways to test the electronic control unit (ECU) of the automobile engine. One is to place the ECU on the actual engine and test it with a bench or vehicle test, and the other is to use a computer for virtual testing. [0003] The former requires that the ECU must be placed on the actual engine, all the input and output of the ECU are directly connected with the car, and all the data are measured data. This will result in extremely high testing costs, and when performing bench experiments, there are many uncertain factors that may damage system equipment or even threaten the safety of experimenters. At the same time, when testing on the actual engine, due to the influence of various factors such as mechanical equipment and sensors, it is...

AI Technical Summary

Problems solved by technology

This will result in extremely high testing costs, and there are many uncertain factors that will damage the system equipment or even threaten the safety of the experimenters when performing bench experiments.

At the same time, when testing on the actual engine, due to the influence of various factors such as mechanical equipment and sensors, it is impossible to judge the quality of the ECU very well.

[0004] If the computer is completely used for virtual testing, it will cause insufficient realism. Even if the full virtual testing is carried out under the condition of ensuring realism, the cost of the developed system and technology will be too high.

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