Browse Publications Technical Papers 2005-01-0915
2005-04-11

In-cylinder Studies of Multiple Diesel Fuel Injection in a Single Cylinder Optical Engine 2005-01-0915

An experimental study has been carried out on the multiple fuel injection process and its effect on the mixing and combustion in a single cylinder diesel engine with optical access. The engine is equipped with a production type cylinder head and a high pressure common rail fuel system which comprises a directly driven high pressure fuel pump and a control system capable of 8 injections per stroke. The single cylinder optical engine could be operated lubrication-free for up to 5 minutes due to the application of special coating on the piston liner and careful design of the piston and extended cylinder block. The in-cylinder spray and combustion were visualized at 10,000 fps by a high-speed colour video camera and a copper vapour laser. The high-speed video recordings and in-cylinder pressure and heat release analysis for up to four fuel injections will be presented and discussed.

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