Title:
パルス圧縮で自由ピストン内燃機関を動作させる方法
Document Type and Number:
Japanese Patent JP4480899
Kind Code:
B2
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.
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Inventors:
Brett M. Bailey
Application Number:
JP2000601317A
Publication Date:
June 16, 2010
Filing Date:
February 07, 2000
Export Citation:
Assignee:
CATERPILLAR INCORPORATED
International Classes:
F01B11/00; F02B71/00; F02B71/04
Domestic Patent References:
| JP7501122A | ||||
| JP4298644A | ||||
| JP31004816B1 |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe