Engine control module environment durability test all-purpose platform and test method

Abstract

The invention provides a universal platform for environment endurance test of the control module of an engine, comprising an industrial control computer, a signal generating sub-system, a state monitoring sub-system, a simulation load sub-system box, an environment test box, application software, a database management system, etc. The system is constructed on the basis of key techniques such as control technique of electro-jet motor, multilayer CAN bus network communication technique, endurance test criterion and PCM long-term reliability assessment method. Based on dummy instrument technique and an embedded computer system, the invention can provide analog signals of a vehicle sensor and action of an execution mechanism, real-time control environment variables and a large-power DC power supply and on-line monitor operation state of PCM, thus evaluating the endurance of PCM by a reliability evaluation expert system. The platform is compatible to environment endurance tests of PCM of multi-manufactures and multi-types and is the open test system with high upgrading and expanding capacity.

Description

technical field [0001] The invention relates to an engine control module (POWER CONTROL MODULE, PCM), in particular to the environment durability testing technology and device of the engine control module. Background technique [0002] The automotive engine control module (PCM) is the core component in the field of automotive electronics. It receives signals from sensors such as the throttle opening, crankshaft position, and vehicle speed of the engine. After calculation by the program, it precisely controls the fuel supply, ignition advance angle and The idling air flow greatly improves the power and fuel economy of the car, and at the same time effectively reduces the exhaust emission. PCM is generally installed in the engine compartment, where the working environment is extremely harsh, and its reliability is of paramount importance. All newly designed PCMs must pass the environmental durability test before they can pass the design verification, and each production batch...

AI Technical Summary

Problems solved by technology

In the 1980s, several internationally renowned PCM module manufacturing companies, such as Bosch (BOSCH), Siemens (SIEMENS), Delphi (DELPHI), and Visteon (VISTEON), successively conducted research on PCM durability testing technology for their own products. , and developed corresponding equipment, the representative one is the test system developed by Visteon, but at present this kind of equipment still uses the design system more than 20 years ago, which can no longer adapt to the ever-changing development of automotive EFI engine technology, although In the process of use, some upgrades have been made to these devices according to the development of automotive electronics technology, such as adding CAN bus communication functions, etc., but the overall technology platform is still backward, and there are some insurmountable defects, such as incompatibility with PCM modules from different manufacturers. , cannot set automatic cycle strategy, cannot configure analog signal types and parameters on site, etc., urgently need to use virtual instrument technology and embedded computer technology to build a new platform

Images