Internal-combustion engines – Free piston – Single chamber; one piston
Patent
1999-02-24
2000-12-12
McMahon, Marguerite
Internal-combustion engines
Free piston
Single chamber; one piston
F02B 7100
Patent
active
061584010
ABSTRACT:
A method of operating a free piston engine of the present invention provides a piston including a piston head reciprocally disposed within a combustion cylinder, a plunger head reciprocally disposed within a hydraulic cylinder, and a plunger rod interconnecting the piston head with the plunger head. The plunger head and the hydraulic cylinder define a variable volume pressure chamber on a side of the plunger head generally opposite the plunger rod. A supply of hydraulic fluid is pulsed from a high pressure hydraulic accumulator into the pressure chamber during a beginning portion of a compression stroke to cause the piston head to move toward a top dead center position. The high pressure hydraulic accumulator is then decoupled from the pressure chamber. A low pressure hydraulic accumulator is coupled with the pressure chamber during a remaining portion of the compression stroke, thereby allowing a relatively lower pressure hydraulic fluid to flow into the hydraulic cylinder as the piston head moves toward the top dead center position.
REFERENCES:
patent: 3182895 (1965-05-01), Panhard
patent: 3606591 (1971-09-01), Potma
patent: 4599861 (1986-07-01), Beaumont
patent: 4705460 (1987-11-01), Braun
patent: 4992031 (1991-02-01), Sampo
patent: 5540194 (1996-07-01), Adams
patent: 5775273 (1998-07-01), Beale
Tu Dresden--publication date unknown--earliest date 1993--Dresden University in Germany.
Application Ser. No. 08/974,326, filed Nov. 19, 1997, entitled "Two Cycle Engine Having a Mono-Valve Integrated with a Fuel Injector".
Application Ser. No. 08/978,329 filed Nov. 25, 1997, entitled "Hydraulic Apparatus with Improved Accumulator for Reduced Pressure.."
Application Ser. No. 09/151,267 filed Sep. 11, 1998, entitled "Method for Operation of a Free Piston Engine".
Application Ser. No. 09/225,525 filed Jan. 4, 1999, entitled "Fuel Injector Assembly Tool and Method".
Benton Jason
Caterpillar Inc.
McMahon Marguerite
Taylor Todd T.
LandOfFree
Method of operating a free piston internal combustion engine wit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of operating a free piston internal combustion engine wit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of operating a free piston internal combustion engine wit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-206878