Software load testing system and method for engine ECU

Abstract

The invention discloses a software load testing system for an engine ECU. The software load testing system comprises a hardware-in-the-loop simulation system, an on-chip debugger and an information management system. The hardware-in-the-loop simulation system is used for setting instructions according to engine parameters and outputting engine simulation data to the engine ECU. The on-chip debugger is used for collecting software load information of the engine ECU and outputting the software load information of the engine ECU to the information management system. The information management system is used for configuring test cases, translating driving conditions in the test cases into engine parameter setting instructions, sending the engine parameter setting instructions to the hardware-in-the-loop simulation system and outputting load test tables according to the software load information corresponding to all the driving conditions in the test cases. The invention further discloses a software load testing method for the engine ECU. According to the software load testing system and method for the engine ECU, the truest software load conditions of the engine ECU can be comprehensively detected.

Description

technical field [0001] The invention relates to automobile electronic technology, in particular to a software load testing system and method of an engine electronic control unit. Background technique [0002] In order to improve fuel efficiency and reduce pollutant emissions in modern engines, it is the general trend to use electronic engine control systems. Because of this, when the engine electronic control system, which is the core of the vehicle, fails, it will cause damage to the vehicle and pose a threat to the safety of the driver. Therefore, for the detection of potential problems of the engine electronic control unit ECU under various driving conditions, the It is even more important in the development process of the engine electronic control unit ECU. [0003] When the ECU software load of the engine electronic control unit is too large, it will cause an unexpected reset of the ECU software of the engine electronic control unit, which poses a threat to the safety ...

AI Technical Summary

Problems solved by technology

[0004] Existing software load testing methods of the engine electronic control unit ECU usually only use self-defined methods to test the software load of the engine electronic control unit ECU at the theoretical maximum load point, and the engine electronic control unit ECU at the theoretical maximum load point The load test of the software cannot cover the complex situations of the engine under various driving conditions (for example: the super knock monitoring module needs to perform integral calculation, which occupies a lot of software resources of the electronic control unit ECU, because only in certain specific working conditions The monitoring window will be opened for calculation only when the theoretical load is at the maximum point, and the working condition at the single theoretical maximum load point usually cannot meet the requirements of these specific working conditions), resulting in that the software load test of the electronic control unit ECU of this type of engine cannot detect The most realistic engine electronic control unit ECU software load

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