Fuel feed circuit for motor vehicle engine

摘要

The fuel feed circuit has a tank (1) with a fuel pump (5), a fuel filter (7) and a high pressure pump. the high pressure outlet (14) of the pump has parallel switching with multiple injectors (16) and an electric high pressure control valve (17) with a return pipe (20). The return pipe has a cooler (19,21) that the first return pipe (18), the injectors (16) and a second return pipe (20) of the high pressure regulating valve can be connected to. At least the second return pipe (20) has a cooler (21) with the discharge side connected to the line between the fuel pump and high pressure pump.