Magneto-hydraulic compensator for a fuel injector

Details Magneto-hydraulic compensator for a fuel injector Magneto-hydraulic compensator for a fuel injector

2006-01-31

2006-01-31

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

C239S533300, C239S585500, C239S088000, C239S533900

Reexamination Certificate

active

06991187

ABSTRACT:
An apparatus and method of compensating for thermal expansion and tolerance variations (wear, brinelling, mounting distortion) in a fuel injector is provided. The apparatus includes a magneto-hydraulic thermal expansion compensator containing magnetically-active fluid positioned in operative contact with the fuel injector actuation element. A electromagnetic coil is provided proximate the magneto-hydraulic compensator. Magnetic flux generated by the electromagnetic coil causes the viscosity of the magnetically-active fluid within the magneto-hydraulic compensator to increase, causing the magneto-hydraulic compensator to become substantially rigid during actuation of the fuel injector.

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