Patent ID: 6675774
Filing Date: 2004-01-13
Classification: F02M

Abstract:
A fuel injection system for internal combustion engines, in particular Diesel engines, comprising a fuel reservoir (15, 15a, 15b),a high-pressure pump (14) which supplies fuel to the fuel reservoir, a number of injectors (22-25) corresponding to the number of cylinders of the engine, the injectors being supplied with fuel from the fuel reservoir, and a pressure limiting valve (49, 49a, 49b), which is connected sealingly to the fuel reservoir and which has a valve housing (51, 51b), a high-pressure region (inlet 56), a low-pressure region (return 57; 73, 74), a valve seat (55) oriented toward the inlet, an axially displaceable valve body (54), and a valve spring (52) urging the valve body in the direction of the valve seat, the pressure limiting valve (49, 49a, 49b) being integratedâ€”at least partiallyâ€”with the fuel reservoir (15, 15a, 15b), in such a way that at least the valve seat (55) and the valve body (54) are spatially associated with the fuel reservoir (15, 15a, 15b), and the seal (69) sealing off the pressure limiting valve (49, 49a, 49b) from the fuel reservoir (15, 15a, 15b) is associated with the low-pressure region of the pressure limiting valve (49, 49a, 49b).