Patent ID: 9234472
Filing Date: 2016-01-12
CPC Classification: F02D,F02M,Y02T

Claim Text:
1. A compression ignition dual fuel 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; an evaporated gas system fluidly positioned between an electronically controlled supply valve fluidly connected to an intake manifold and the gaseous fuel supply and pressure control system, and the electronically controlled supply valve being movable between an open position and a closed position; each of the fuel injectors having a liquid drain outlet fluidly connected to the liquid fuel supply and pressure control system; and an electronic controller in control communication with each of the plurality of fuel injectors, the liquid fuel supply and pressure control system, the gaseous fuel supply and pressure control system and the electronically controlled supply valve, the electronic controller configured to selectively and independently control each of the plurality of fuel injectors, the liquid fuel supply and pressure control system, the gaseous fuel supply and pressure control system and the electronically controlled supply valve, the electronic controller further configured to control the electronically controlled supply valve based at least upon a risk of methane slip, a risk of intake ignition, or a load on the compression ignition dual fuel engine, or a combination thereof.