HIGH EFFICIENCY ENGINE WITH VARIABLE COMPRESSION RATIO AND CHARGE

Title:

HIGH EFFICIENCY ENGINE WITH VARIABLE COMPRESSION RATIO AND CHARGE

Document Type and Number:

Japanese Patent JP2008180235

Kind Code:

A

Abstract:

To provide a high efficiency prime mover for smaller output requirement than the maximum one of an engine, having lighter and smaller construction than conventional one.

An internal combustion engine uses a variable compression ratio and variable fuel supply to one of two combustion chambers. Varying the compression ratio is accomplished by changing the volume of a single combustion chamber 53 with an auxiliary piston 57 energized in an open position by a spring 58. This, in combination with lean burning, results in a highly efficient prime mover particularly at the low torque outputs needed in passenger car applications. The relationship of compression ratio and fuel feed is varied with engine speed. Burning occurs in two stages, and this results in a clean exhaust. This allows very highly efficient throttling of two-cycle engine to be realized.

Inventors:

COWANS KENNETH W

Application Number:

JP2008112809A

Publication Date:

August 07, 2008

Filing Date:

April 23, 2008

Export Citation:

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Assignee:

COWANS KENNETH W

International Classes:

F02D15/04; F02D43/00; F02B15/00; F02B19/12; F02B19/16; F02B23/00; F02B25/18; F02B37/04; F02B75/04; F02D23/00; F02D23/02; F02D41/02; F02B1/12; F02B75/02

Domestic Patent References:

JPS56146012A	1981-11-13
JPS5128485Y2	1976-07-19
JPH07509553A	1995-10-19
JPS6441626A	1989-02-13
JPS6365119A	1988-03-23
JPS59188056A	1984-10-25
JPS63230961A	1988-09-27

Foreign References:

FR2440472A1

1980-05-30

Attorney, Agent or Firm:

Takuji Yamada
Mitsuo Tanaka
Masahiro Ishino
Mikio Takeuchi
Haruo Nakano
Kawabata Junichi

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