Internal-combustion engines – Free piston – Single chamber; one piston
Reexamination Certificate
2005-12-06
2005-12-06
Yuen, Henry C. (Department: 3747)
Internal-combustion engines
Free piston
Single chamber; one piston
Reexamination Certificate
active
06971339
ABSTRACT:
A method for controlling a servo for an actuator that applies a force to a piston that reciprocates in a cylinder of a free piston engine having axially-aligned cylinders and a pair of mutually connected pistons that reciprocate in the cylinders. The servo has a first state at which an energy source is connected to the actuator for developing the actuating force. The length of a response period for the actuator force to reach a desired magnitude after applying a control signal to the servo is determined. The length of a period for the piston to reach a desired position where the actuator force will reach the desired magnitude is determined. The servo is switched to the first state when the length of time for the piston to move from its current position to the desired position reaches the length of the response period.
REFERENCES:
patent: 5213067 (1993-05-01), Kramer
patent: 5829393 (1998-11-01), Achten et al.
patent: 5983638 (1999-11-01), Achten et al.
patent: 6105541 (2000-08-01), Berlinger
patent: 6158401 (2000-12-01), Bailey
patent: 6170443 (2001-01-01), Hofbauer
patent: 6206656 (2001-03-01), Bailey et al.
patent: 6279517 (2001-08-01), Achten
patent: 6293231 (2001-09-01), Valentin
patent: 6823671 (2004-11-01), Achten
Goertz et al., SAE Technical Paper Series 2000-01-0996, Free Piston Engine Its Application and Optimization, Mar. 6-9, 2000, pp. 1-10.
Ali Hyder
Ford Global Technologies LLC
Kelley David B.
MacMillan Sobanski & Todd
Yuen Henry C.
LandOfFree
Electromagnetic servo valve strategy for controlling a free... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electromagnetic servo valve strategy for controlling a free..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic servo valve strategy for controlling a free... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3495042