Patent ID: 7069908

Claim:
An injector for directly injecting fuel into a cylinder of an internal combustion engine having a socket, the injector comprising: a nozzle insertable into the socket, the nozzle including a distal end, wherein an annular gap is defined between the nozzle and the socket when the nozzle is received in the socket; a first seal groove, formed in the nozzle, for receiving a first gas seal that seals the annular gap, the first seal groove having a first depth; a second seal groove, formed in the nozzle, for receiving a second gas seal that seals the annular gap, the second seal groove being formed closer to the distal end of the nozzle than the first seal groove and having a second depth that is greater than the first depth; and a basal end, wherein the first seal groove includes a sloped wall that forms a space between the sloped wall and the socket when the nozzle is received in the socket, and in which the space narrows in a direction towards the basal end of the injector.