【作者】

Ryan Roecker

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。A known issue with all gaseous-fueled engines, including dual-fuel engines, and especially those with fumigation-type or other “upstream” injection of gas, is poor transient response. This is due to the transport delay from the gaseous fuel injection point to the engine cylinders. This delay can result in slow up-transients as well as slow down-transients. We present a solution to the problem of poor up-transients (a request for increased torque from the driver) in the form of state-based diesel fueling. That is, matching the quantity, timing, pressure, and pattern of the diesel injection to the current in-cylinder state of the engine. In order to have state-based fueling knowledge of the state must be available. This is achieved via a natural gas fraction observer. That is, a model of the intake manifold natural gas to air ratio. Other important states include pressure, mass and/or concentration of oxygen, and temperature.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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