Bumpers for protecting an O-ring seal of a fuel injector during the injector's insertion into a socket
AssigneeSiemens Automotive Corporation
InventorGary I. Kennedy
Life of this patent
Estimating the term…
Abstract
The interior sidewall surface of a fuel injector socket is provided with a pair of bumpers, one to either side of an opening in the sidewall surface that communicates the socket to a fuel passage. The bumpers prevent an O-ring seal that is disposed around the outside of the fuel injector from contacting the edge of that opening during insertion and removal of the fuel injector into and from the socket. The bumpers have radiused surfaces that are presented to the fuel injector so that their contact with the O-ring does not damage the O-ring.
Claims16
A fuel injector mounting comprising a socket having an interior wall surface extending inwardly from an open end via which an electromechanical-actuated fuel injector is inserted into the socket, a fuel passage transversely intersecting said interior wall surface so as to provide an opening between said fuel passage and said socket, said interior wall surface having a sealing surface portion disposed interiorly of said socket beyond said opening relative to said open end, said sealing surface adapted to seal in fluid-tight manner with an annular elastomeric seal disposed around and carried by such a fuel injector after such a fuel injector has been inserted into said socket whereby said seal passes across said opening during such insertion, characterized by two bumpers disposed on said interior wall surface, one to either side of said opening circumferentially about said socket, said bumpers protruding radially inwardly from said interior wall surface and presenting rounded surfaces to such a fuel injector so as to be effective to prevent such a seal from contacting said opening during insertion of such a fuel injector into said socket.
A fuel injector mounting comprising in combination with an electromechanical-actuated fuel injector a socket having an interior wall surface extending inwardly from an open end via which said fuel injector is inserted into said socket, a fuel passage transversely intersecting said interior wall surface so as to provide an opening between said fuel passage and said socket, said interior wall surface having a sealing surface portion disposed interiorly of said socket beyond said opening relative to said open end, said sealing surface sealing in fluid-tight manner with an annular elastomeric seal disposed around and carried by said fuel injector after said fuel injector has been inserted into said socket whereby said seal passes across said opening during such insertion, characterized by two bumpers disposed on said interior wall surface, one to either side of said opening circumferentially about said socket, said bumpers protruding radially inwardly from said interior wall surface and presenting rounded surfaces to said fuel injector so as to be effective to prevent such said seal from contacting said opening during insertion of said fuel injector into said socket.
Dependencies are inferred from the claim text.