Dalian Locomotive Successfully Developed Diesel Engine Electronic Fuel Injection Controller

Since December 22, 2013, the electronic injection controller of Harvard N3 diesel locomotive independently developed by Dalian Locomotive Company has broken the monopoly of foreign technology through speed test. Since it was put into use, the Battery Locomotive application evaluation of the electronic injection controller in the loading stage has been continuously praised.

The 16V265H diesel engine is the "heart" of the Harmony N3 locomotive. The technology in the current domestic similar products is relatively advanced. This kind of diesel engine adopts the electronic control system. Because there are technical barriers to EFI technology, the core technology is controlled by a few foreign companies. At present, Underground Mining Locomotive the EFI controller still needs to be imported.

Compared with the traditional mechanical speed control method, the electronic fuel injection diesel engine can take advantage of the rapidity and accuracy of electronic signal transmission, so that the diesel engine control is more accurate and stable. In order to break the technical monopoly of foreign companies in the field of diesel engine EFI controllers, Dalian Locomotive Corporation mobilized its technical backbone. After four years of design, manufacturing, testing and improvement, it successfully developed an electronically controlled controller with completely independent intellectual property rights.

The controller accumulatively applied for 3 national invention patents and 1 utility model patent, and published 4 core journal search papers. The electrical interface Locomotive and main functions of the new EFI controller can be equivalently replaced with the original EMDEC EFI controller. At the same time, it can be compatible with the Harmony N3 locomotive on-board microcomputer to realize the condition monitoring and fault diagnosis of the diesel engine. This technology is at the leading level in domestic similar products,Locomotive can effectively improve the performance of diesel engines, optimize the fuel economy of diesel engines, and improve emissions. In particular, the fuel consumption rate index, the new electronic injection controller equivalent to, or even better than the imported electronic fuel injection controller.