Dual-purpose fuel engine electronic control system and electronic control method

Abstract

The invention discloses a dual-purpose fuel engine electronic control system and an electronic control method. The dual-purpose fuel engine electronic control system comprises an engine electronic control unit, a power source, a relay, a fuel change-over switch, a first fuel system and a second fuel system, wherein the engine electronic control unit is in driving connection with the first fuel system and the second fuel system, and controls and drives the first fuel system or the second fuel system to work; the power source is selectively connected with the first fuel system and the second fuel system through the relay and provides power for the first fuel system or the second fuel system; and the engine electronic control unit is connected with the fuel change-over switch, the fuel change-over switch detects an instruction of an operator, and the electronic control unit drives the relay to select a fuel nozzle driving circuit of one of the fuel systems to provide power according to the detected instruction. The system can work in the best state in various fuel modes, and the purposes of saving energy and protecting the environment are realized. In addition, the number of components of the system is reduced to the maximum extent, the topological structure is simplified, and operation is simple, convenient and reliable.

Description

technical field [0001] The invention belongs to the field of engine electric control, and relates to an electric control system and an electric control method for a dual-purpose fuel engine. Background technique [0002] When considering the two aspects of supply convenience and energy saving and environmental protection, many engines hope to work in two fuel modes: one mode is to be able to get fuel supplements very conveniently, such as gasoline; the other mode is to save money as much as possible Or environmental protection, such as CNG / LNG (compressed natural gas / liquefied natural gas). Using CNG / LNG is the best choice. However, due to the problem of gas source, CNG / LNG may have a supply bottleneck. Therefore, dual-use fuel is the best choice. Use gas when the gas source is sufficient, and use fuel oil for emergency when the gas source is tight. [0003] The most popular dual-purpose fuel system is the translation type, that is, a translation controller is added on t...

AI Technical Summary

Problems solved by technology

This translational system ignores the difference in combustion of different fuels, which inevitably reduces the working efficiency of the engine in the second fuel (CNG / LNG) mode, and this structure cannot support OBD (On-BoardDiagnostics, on-board Automatic diagnosis system), with the continuous upgrading of national environmental protection regulations, will be eliminated

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