RANGE OF ENGINES USING COMMON RAIL FUEL SYSTEM WITH PUMP AND RAIL ASSEMBLIES HAVING COMMON COMPONENTS

摘要

A pump and rail assembly (54) includes a plurality of quills (84) that are compressed between quill seats (108, 109) on a pump (75) and an output rail (76). A rail pressure control valve (77) and a rail pressure sensor (79) are attached to respective ends of the output rail (76). An inlet throttle valve (95) is attached to a housing (100) of the pump and rail assembly (54). Depending upon the application, the output rail (76) may supply fuel to a first injection bank (70) that includes a plurality of fuel injectors (72) in a first common rail (49, 50), and a second fuel injection bank that includes a second common rail (52, 53) and a plurality of fuel injectors (72). Different engines having different numbers of cylinders (11, 16, 21, 26, 27, 33, 35, 41, 43, 48, 51, 57, 60) may use similar pump and rail assemblies that each include a plurality of quills (84), a plurality of pumping elements (94) positioned in a pump housing (100) and an output rail (76). The quills (84) for each of the different engine applications are interchangeable but differ in number. In addition, the pumping elements (94) of each of the different engine applications are also interchangeable but differ in number.