Direct fuel injection

Details Direct fuel injection Direct fuel injection

F - Mech Eng,Light,Heat,Weapons

02

M

123/236.1

F02M 61/08 (2006.01) F02B 23/08 (2006.01) F02B 23/10 (2006.01) F02D 41/34 (2006.01) F02F 3/26 (2006.01) F02M 51/06 (2006.01) F02M 51/08 (2006.01) F02M 67/12 (2006.01) F02M 69/00 (2006.01) F02B 61/04 (2006.01) F02B 75/02 (2006.01) F02B 75/12 (2006.01)

Patent

CA 1299039

Abstract Improvements in fuel ingection nozzles for spark ingnited internal combustion engines enabling a metered quantity of fuel entrained in a gas to be delivered into a combustion chamber to optimise the efficiency of operation of the engine. The fuel injection nozzle has a port (11) and a valve (15) movable relative to the port (11). Port (11) and the valve (15) have respective annular sealing faces (13) and (18) defining an annular frustoconical shaped throat 25 when the nozzle is open for the flow of metered fuel therethrough. The nozzle has a shroud (20) extending from the port (11) surrounding the periphery of the valve (15) when the nozzle is open and defining a delivery passage 27 downstream of the throat in the direction of fuel flow towards the combustion chamber. The delivery passage 27 being configured to be purged of fuel after each fuel delivery cycle to prevent carbon build-up in the nozzle.

549175

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