Quick start fuel system for gaseous fuel internal combustion engine and method

A gaseous fuel engine system comprising:

• a gaseous fuel engine having a plurality of cylinders formed therein;
• an intake system including an intake conduit extending in an upstream to downstream direction between an intake air inlet and the plurality of cylinders, and a compressor operated via a flow of exhaust from the gaseous fuel engine;
• a main fuel system including a main fuel admission valve coupled to the intake conduit at an upstream fuel admission location that is upstream of the compressor, for admission of a main gaseous fuel into the intake conduit;
• a quick start fuel system including a pressurized gaseous fuel supply, a fuel feed conduit, and a quick start fuel admission valve;
• the fuel feed conduit being coupled to the intake conduit at a downstream fuel admission location that is downstream of the compressor;
• and
• the quick start fuel admission valve being electrically actuated and positioned fluidly between the intake conduit and the pressurized gaseous fuel supply to admit a pressurized gaseous fuel via the fuel feed conduit for quick starting the gaseous fuel engine;
• wherein the main fuel system includes a lower pressure fuel supply containing a main gaseous fuel, and the pressurized fuel supply includes a higher pressure fuel supply containing a quick start gaseous fuel;
• and
• wherein the main fuel system includes a lower pressure fuel supply containing a main gaseous fuel, and the pressurized fuel supply includes a higher pressure fuel supply containing a quick start gaseous fuel.

A quick start system for a gaseous fuel internal combustion engine comprising:

• a pressurized supply of a quick start gaseous fuel;
• a conduit section structured for fluidly connecting a compressor to an intake manifold in an intake system for a gaseous fuel internal combustion engine;
• a fuel feed conduit coupled to the conduit section;
• a shutoff valve;
• and
• an electrically actuated quick start fuel admission valve positionable fluidly between the conduit section and the pressurized supply of a quick start gaseous fuel to admit the quick start gaseous fuel via the fuel feed conduit for quick starting the gaseous fuel internal combustion engine;
• wherein the conduit section includes an elbow connector forming a bend between a first conduit end and a second conduit end, and the fuel feed conduit is attached to the conduit section between the first conduit end and the second conduit end at a fuel admission location.