Multifunctional engine control unit

Abstract

The invention provides a multifunctional engine control unit. The multifunctional engine control unit comprises a peripheral drive circuit module, a microcontroller unit, a protocol transceiver module, an input and output module, a connector module and a power module, wherein the connector module is used for being connected with vehicle fault diagnosis equipment; the protocol transceiver module is used for storing at least one communication protocol; and the microcontroller unit is used for selecting the corresponding communication protocols for communication from the protocol transceiver module according to different vehicle types so as to finish checking and overhauling of the vehicle fault diagnosis equipment. According to the multifunctional engine control unit, the functions of various engine control units in the prior art are integrated through compatibility of a plurality of communication protocols so as to achieve the all-in-one effect, so that convenience is provided for checking and overhauling of the vehicle fault diagnosis equipment, the problems of high cost, low possibility of purchasing, unavailability in repairing and the like of a building block type engine control unit in the prior art are avoided, and the production cost is reduced to a certain extent.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an on-vehicle engine control unit (ECU, Eletronic Control Unit) used for troubleshooting and function testing of automobile fault diagnosis equipment. Background technique [0002] The engine control unit that controls the fuel injection, ignition, and vehicle emissions on the vehicle is composed of a microprocessor (CPU), a memory (ROM, RAM), an input / output interface (I / O), and a module. It is composed of large-scale integrated circuits such as digital converter (A / D) and shaping and driving. The function of the engine control unit is to calculate, process and judge the information input by the air flow meter and various sensors according to the programs and data stored in it, and then output instructions to provide the fuel injector with an electric pulse signal of a certain width to control the fuel injection. The fuel injection quantity and fuel injection time of the engine, the ...

AI Technical Summary

Problems solved by technology

see figure 1 , in order to test whether the general-purpose vehicle fault diagnosis equipment can test different vehicle models or different engine control units, you can purchase a variety of engine control units 1, 2, 3, 4... n stacked together by building blocks However, the disadvantages of this method are: 1. Difficult to purchase; 2. High cost; 3. Basically no repairable performance; 4. Heavy

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