| 主权项 |
1. A dual fuel compression ignition engine, comprising:
a gaseous fuel common rail fluidly connected to a plurality of fuel injectors each positioned for direct injection into one engine cylinder; a liquid fuel common rail fluidly connected to the plurality of fuel injectors; a gaseous fuel supply and pressure control system fluidly connected to the gaseous fuel common rail; a liquid fuel supply and pressure control system fluidly connected to the liquid fuel common rail; and an electronic controller in control communication with each of the plurality of fuel injectors, the gaseous fuel supply and pressure control system, and the liquid fuel supply and pressure control system, and having a pressure control algorithm executable thereon, wherein the electronic controller is configured to control a liquid fuel pressure within the liquid fuel common rail toward a desired liquid fuel pressure, control a gaseous fuel pressure within the gaseous fuel common rail toward a desired gaseous fuel pressure that is less than the desired liquid fuel pressure, receive an input signal indicative of a commanded change in the liquid fuel pressure to a decreased liquid fuel pressure that is less than both the desired liquid fuel pressure and a current gaseous fuel pressure, and maintain the liquid fuel pressure above the gaseous fuel pressure during a transition of the liquid fuel pressure toward the decreased liquid fuel pressure by executing the pressure control algorithm. |
