Title:
MAGNETO-HYDRAULIC COMPENSATOR FOR A FUEL INJECTOR
Document Type and Number:
WIPO Patent Application WO2002038948
Kind Code:
A8
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 (130) containing magnetically-active fluid positioned in operative contact with the fuel injector actuation element (124). An electromagnetic coil (129) is provided proximate the magneto-hydraulic compensator (130). 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 (130) to become substantially rigid during actuation of the fuel injector (100).
Inventors:
CZIMMEK PERRY ROBERT
Application Number:
PCT/US2001/051253
Publication Date:
November 13, 2003
Filing Date:
November 13, 2001
Export Citation:
Assignee:
SIEMENS VDO AUTOMOTIVE CORP (US)
International Classes:
F02M51/06; F02M61/16; F02M63/00; (IPC1-7): F02M61/16; F02M51/06
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