Electronically Controlled High Pressure Common Rail Diesel Fuel Injection System And Development Environment

In the diesel engine industry, the growing trends are toward wider use of electronically controlled fuel injection equipment to provider better engine performance, while confirming to the stringent exhaust emission standards.Although there have recently been some research of high-pressure fuel injection system, there is little literature published about high-pressure common rail type electronically controlled fuel injection system.This paper describes the details of a study made on electronically controlled system for high-pressure common rail fuel injection diesel associated with ECU, controlled software and integrated development environment, with an electronically controlled high-pressure common rail type fuel injection system installed in an in-line-6-cylinder turbocharged and intercooled DI diesel engine.The study brings the concept of integrated development environment for electronically controlled diesel engine based on CAN bus, and describes its modules and functions in detail. With the integrated development environment, it can realize the debug of multi-ECU and the communication of point-to-point and point-to-multipoint at the same time.Based on the result of the study, the parameters of common rail pressure, injection timing and injection quantity were optimized in all engine operation ranges. Consequently, the smoke was cut in half in comparison with the conventional engine, while reducing the fuel consume rate and exhaust temperature. Moreover, high-pressure common rail system was found to be very effective for improvement of engine startability and reduction of white smoke at low temperatures.