Title:
VARIABLE COMPRESSION RATIO MECHANISM FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2004316465
Kind Code:
A
Abstract:
To miniaturize a hydraulic source, materialize low electric power consumption, and quickly drive a control shaft in a variable compression ratio mechanism for an internal combustion engine.
A hydraulic circuit 8 is provided with an accumulator 18 between a hydraulic pump 15 and a hydraulic control valve 21, and with a controller 23 controlling a hydraulic control valve 21 and a electric motor 22 based on signals from a hydraulic pressure sensor 20 and a position sensor 34. The controller 23 stops operation of the electric motor 22 after pressure of the accumulator 18 exceeds a predetermined value, the hydraulic actuator 11 is driven by pressure of the accumulator 18.
Inventors:
SUGAWARA NARIFUMI
MOGI KATSUYA
MOGI KATSUYA
Application Number:
JP2003108091A
Publication Date:
November 11, 2004
Filing Date:
April 11, 2003
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
NISSAN MOTOR
NISSAN MOTOR
International Classes:
F02B75/04; F01B9/02; F01B31/14; F02B75/32; F02D15/02; (IPC1-7): F02D15/02; F01B9/02; F01B31/14; F02B75/04; F02B75/32
Attorney, Agent or Firm:
Hiroaki Tazawa
Konobu Kato
Konobu Kato
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