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Combustion control system and method for switching between spark and pilot-ignited operating modes in dual fuel engine
Combustion control system and method for switching between spark and pilot-ignited operating modes in dual fuel engine
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机译:双燃料发动机中火花和试点点火操作模式切换的燃烧控制系统和方法
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摘要
A method of controlling a dual fuel engine system includes adjusting a phasing control parameter such as air-fuel ratio (AFR), based on a phasing signal to limit an error in a phasing of combustion of gaseous fuel. The cylinder is switched to a dual fuel liquid pilot-ignited mode by commanding direct injection of an early pilot shot of liquid fuel, based on the adjustment to the phasing control parameter, and production of a spark to ignite gaseous fuel in the cylinder. Switching the cylinder to the dual fuel liquid pilot-ignited mode is completed by commanding direct injection of an early pilot shot and a second pilot shot of liquid fuel to ignite gaseous fuel in response to combustion of the early and second pilot shots in the cylinder.
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