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Title:
A drive and an internal-combustion engine for change-over valves of an internal-combustion engine
Document Type and Number:
Japanese Patent JP6126268
Kind Code:
B2
Abstract:
An actuating device (11) is provided for changeover valves (10) of an internal combustion engine having an adjustable compression ratio. Each changeover valve (10) is used to control a hydraulic oil flow in hydraulic chambers of an eccentric adjusting device of a respective connecting rod (1) of the internal combustion engine. Each changeover valve (10) has a pick-off element (12) that can be actuated by the actuating device (11). The actuating device (11) has a selector fork (13) for each changeover valve (10) and hence for each pick-off element (12) to be actuated. The selector forks are secured on a support structure (14) and can be moved from a first selection position into a second selection position against the restoring force of a return element (22), and wherein the restoring force of the return element (22) moves the selector forks (13) automatically in the direction of the first selection position.

Inventors:
Michael Paul
Application Number:
JP2016086143A
Publication Date:
May 10, 2017
Filing Date:
April 22, 2016
Export Citation:
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Assignee:
Dr. Ing. h.c. F. Porsche Aktiengesellschaft
International Classes:
F02B75/18; F02B75/04; F02D15/02; F16C7/06
Domestic Patent References:
JP2011196549A
JP3242433A
Foreign References:
WO2014019684A1
DE102012014917A1
DE102012112461A1
DE102005055199A1
US2989954
DE102014118728A1
Attorney, Agent or Firm:
Nobuyuki Okajima