Patent ID: 6637409
Filing Date: 2003-10-28
Classification: F02M,Y10T

Abstract:
A fuel injection system (1; 40) for internal combustion engines, comprisingan electronically triggered control valve (9; 9â€²) having an axial through bore (10), which is divided by two valve seats (19, 20) into three annular chambers (11, 12, 13), a supply line (7; 50) for fuel at high pressure, a high-pressure line (15; 49) leading away to an injection valve (8; 41), and a relief line (17) connected respectively to said three annular chambers (11, 12, 13), a control piston (14) guided in the through bore (10) and having two valve sealing faces (24, 27) cooperating with the two valve seats (19, 20), respectively, and a further valve sealing face (25) on said control piston cooperating with the first valve seat (19), the spacing (h1) from the first valve sealing face (24) to the further valve sealing face (25) being at least equal to the spacing (h2) between the second valve sealing face (27) and the second valve seat (20) when the first sealing seat is closed.