Patent ID: 8751139

Claim:
A method, comprising: fluidly coupling a gaseous fuel supply for an engine to an air intake of the engine upstream of a pressurizing device in the air intake with a first fuel conduit; fluidly coupling an upstream side of a valve in a second fuel conduit to the gaseous fuel supply for the engine; fluidly coupling a downstream side of the valve to the air intake of the engine at a position downstream of the pressurizing device so that the second fuel conduit bypasses the pressurizing device; in response to starting the engine, actuating the valve to route gaseous fuel from the gaseous fuel supply through the second fuel conduit to the position downstream of the pressurizing device and then to the engine while supplying gaseous fuel to the air intake upstream of the pressurizing device through the first conduit; and in response to the engine transitioning from starting to a running operating condition, closing the valve to cease gaseous fuel supply from the second fluid conduit so the engine is entirely supplied with gaseous fuel from the first fluid conduit in the running operating condition.