Range Of Engines Using Common Rail Fuel System With Pump And Rail Assemblies Having Common Components

A fuel system comprising:

• a pump and rail assembly that includes a plurality of quills, a plurality of pumping elements positioned in a pump housing, and an output rail;
• a first injection bank that includes a plurality of fuel injectors fluidly connected to a first common rail;
• a second injection bank that includes a plurality of fuel injectors fluidly connected to a second common rail;
• and
• each of the first and second common rails being fluidly connected to the output rail.

A plurality of engines having different numbers of cylinders but common components, comprising:

• a plurality of first engines, each having a small number of cylinders and a first fuel system with a first pump and rail assembly;
• a plurality of second engines, each having a large number of cylinders and a second fuel system with a second pump and rail assembly;
• the first and second pump and rail assemblies each include a plurality of quills, a plurality of pumping elements positioned in a pump housing, and an output rail;
• the plurality of quills for each of the first and second pump and rail assemblies being interchangeable but differing in number;
• and
• the plurality of pumping elements for each of the first and second pump and rail assemblies being interchangeable but differing in number.

A method of operating common rail fuel system, the method comprising:

• pressurizing an intermediate rail via individual fluid connections to a plurality of pumping elements;
• dampening pressure waves between the pumping elements and a plurality of fuel injectors by:
• supplying pressurized fuel to an injector rails from the intermediate rail via high pressure fuel line, and;
• supplying pressurized fuel to the plurality of fuel injectors via individual branch passages from the injector rail.