Title:
制御された均質充填混合圧縮着火エンジン
Document Type and Number:
Japanese Patent JP2005511946
Kind Code:
A
Abstract:
An engine has a plurality of combustion cylinders with a first piston reciprocably mounted in each of the combustion cylinders in the conventional manner. The engine head has, in communication with each of the combustion cylinders, a cylindrical recess containing a reciprocably mounted second piston. On the side of the second piston opposite the combustion chamber is a control chamber with inlets and outlets for controlling movement of the second piston. The second piston is used to increase the compression ratio without appreciably reducing the expansion ratio. Alternatively, the second piston may be used as a pump to pump fluid from the control chamber. In yet another alternative method of operation, the second piston can be driven outward within the cylindrical recess to an extent which varies in accordance with power demand, thereby varying the compression ratio in accordance with the power demand.
Inventors:
Gray Charles El Jr.
Application Number:
JP2003549707A
Publication Date:
April 28, 2005
Filing Date:
November 13, 2002
Export Citation:
Assignee:
United States Environmental Protection Agency
International Classes:
F02D45/00; F02B1/12; F02B75/04; F02D15/04; F02D41/30; (IPC1-7): F02D15/04; F02D45/00
Attorney, Agent or Firm:
Makoto Kawai