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Yao Chunde
Yao Guangtao
Song Jinou
Wang Yinshan
State Key Laboratory of
Engine Combustion,
Tianjin University,
Tianjin 300072, China |
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MECHANISM ON
DISTRIBUTION OF
PILOT FUEL SPRAY AND COMPRESS-
ING IGNITION IN PREMIXED
NATURAL GAS ENGINE IGNITED
BY PILOT DIESEL*
Abstract:
Numerical simulations of pilot fuel spray and compressing ignition for pre-mixed natural gas ignited by pilot diesel are described. By means of these modeling, the dual fuel and diesel fuel ignition mechanism of some phenomena investigated on an optional engine by technology of high-speed CCD is analyzed. It is demonstrated that the longer delay of ignition in dual fuel engine is not mainly caused by change of the mixture thermodynamics parameters. The analysis results illustrate that the ignition of pre-mixed natural gas ignited by pilot diesel taking place in dual fuel engine is a process of homogenous charge compression ignition.
Key words:
Dual fuel Pilot diesel Modeling of spray and ignition Delay of ignition Spray field |