Patent ID: 6238191
Filing Date: 2001-05-29
Classification: F02M,F04D,Y10T

Abstract:
An apparatus for supplying fuel, said apparatus comprising a fuel tank (3) and a fuel feed unit (2) arranged in the fuel tank, said fuel feed unit (2) comprising a main housing (1), a suction cover (6) arranged in a bottom region of the main housing, a fuel pump and a degassing valve (10) arranged in the suction cover (6), said degassing valve (10) including means for degassing said fuel pump;wherein the fuel pump comprises an impeller housing (7) having a circular passage (8) for fuel flow and an impeller (9) arranged in the impeller housing (7), said impeller housing (7) is arranged in the main housing (1) and next to said suction cover(6), and said impeller housing (7) is provided with a degassing passage (11) connecting the circular passage (8) and the degassing valve (10); andwherein the degassing valve (10) includes a valve body (23), a valve seat (12) in the valve body, a valve ball (13) in the valve body, a compression spring (14) arranged in the valve body so as to bear on the valve ball (13) and guide ribs (15) for guiding said valve ball in the valve body and for spacing said valve ball from an opening of said degassing passage (11), so that the valve ball (13) is urged into a first position (A) in the direction of the degassing passage (11) from the valve seat (12) by means of the compression spring (14) when pressure in said degassing passage (11) does not exceed a predetermined value and the valve ball (13) is forced into a second position on the valve seat (12) with said compression spring (14) pressed together in operation when said pressure in said degassing passage (11) exceeds a predetermined value.