Heat activated valve system

Details Heat activated valve system Heat activated valve system

2007-04-13

2009-08-25

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

C123S090160

Reexamination Certificate

active

07578270

ABSTRACT:
An electronically actuated valve assembly for an internal combustion engine is disclosed, wherein the valve assembly comprises a valve stem, a shape memory alloy actuator in operative communication with the valve stem, a coolant passage through which at least a portion of the shape memory alloy actuator extends, and a cooling fluid source in communication with the coolant passage.

REFERENCES:
patent: 5211371 (1993-05-01), Coffee
patent: 6178934 (2001-01-01), Hirasawa et al.
patent: 6625848 (2003-09-01), Schneider
patent: 6830019 (2004-12-01), Kluge
patent: 6843465 (2005-01-01), Scott
patent: 6916159 (2005-07-01), Rush et al.
patent: 2005/0173661 (2005-08-01), Mignon et al.
patent: 2001-173550 (2001-06-01), None
patent: 2001173550 (2001-06-01), None
Abstract of JP 2001173550A shown above.
“Nitinol Actuator Wire-Flexinot Nitinol Wire.” Small Parts, Inc.-The Hardware Store for Researchers and Developers; Accessed Mar. 8, 2006. <http://www/smallparts.com/products/descriptions
aw.cfm>.

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