Electronic unit injector

Details Electronic unit injector Electronic unit injector

F - Mech Eng,Light,Heat,Weapons

02

M

123/135

F02M 39/00 (2006.01) F02M 45/06 (2006.01) F02M 57/02 (2006.01) F02M 59/22 (2006.01) F02M 59/36 (2006.01)

Patent

CA 1321327

ABSTRACT OF THE DISCLOSURE An electronic unit injector employs an expandable chamber which expands as pressure in the injector increases between a pair of threshold pressures. The expansion of the chamber results in a two-phase rate of injection of the injector whereby the initial injection rate is significantly lower than the second injection rate. In one embodiment, the expandable chamber is formed by a pin which is displaceable in a cap mounted to the injector body. The pin bottoms against the cap to define the phase transition. 23

581822

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