Title:
【発明の名称】パルス圧縮式自由ピストン内燃機関
Document Type and Number:
Japanese Patent JP2002538353
Kind Code:
A
Abstract:
A free piston internal combustion engine includes a housing with a combustion cylinder and a hydraulic cylinder. A piston includes a piston head reciprocally disposed within the combustion cylinder and movable during a compression stroke to a top dead center position and during a return stroke to a BDC position. A plunger head is reciprocally disposed within the hydraulic cylinder. A plunger rod interconnects and is rigidly affixed to each of the piston head and 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. At least one valve interconnects a hydraulic accumulator with the pressure chamber during a portion of the compression stroke to act on the plunger head and thereby move the piston head toward the top dead center position, and interconnects the hydraulic accumulator with the pressure chamber during the return stroke to pressurize the hydraulic accumulator during movement of the piston head toward the BDC position.
Inventors:
Brett M. Bailey
Application Number:
JP2000601319A
Publication Date:
November 12, 2002
Filing Date:
January 07, 2000
Export Citation:
Assignee:
CATERPILLAR INCORPORATED
International Classes:
F02B71/04; (IPC1-7): F01B11/00; F02B71/00; F02D15/02
Attorney, Agent or Firm:
Yoshikazu Tani (2 outside)