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Title:
PISTON RECIPROCAL INTERNAL COMBUSTION ENGINE HAVING VARIABLECOMPRESSION RATIO
Document Type and Number:
Japanese Patent JPS60204947
Kind Code:
A
Abstract:
For changing the compression ratio of a reciprocating piston internal combustion engine the piston 3 consists of an outer piston part 7 and an inner piston part 10 which are connected with each other by a thread 13,14. By turning the outer piston part 7 by means of a bushing 18 which is axially fixed, but rotatable around piston axis 15 and which is in engagement with the outer piston part 7 by means of a longitudinal gear 19,20, the outer piston part 7 can be turned steplessly during operation with respect to the inner piston part 10, whereby the outer piston part 7 is displaced along the piston axis 15, thus changing the volume of the operating chamber and thereby the compression ratio.

Inventors:
ANTON KESURAA
Application Number:
JP2336485A
Publication Date:
October 16, 1985
Filing Date:
February 07, 1985
Export Citation:
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Assignee:
AUDI AG
International Classes:
F02B75/04; F02D15/02; F02F3/00; F16J1/24; (IPC1-7): F02B75/04; F02D15/04; F02F3/00
Attorney, Agent or Firm:
Yoshihiro Morimoto