Title:
VARIABLE TURBO SUPERCHARGER AND METHOD OF DRIVING THE SAME
Document Type and Number:
WIPO Patent Application WO/2008/041577
Kind Code:
A1
Abstract:
A hydraulic servo drive device (30) for driving a swing mechanism of a variable super
charger is constructed from a servo piston (31) connected to a drive shaft (21)
of the swing mechanism and from a pilot spool (36) received in a center hole (34)
of the servo piston (31) and slid by pilot pressure. A first hydraulic chamber (47)
and second hydraulic chamber (48) into and from which pressurized oil flows are
arranged in a housing (33). In the servo piston (31) are separately arranged a
pressure port (51) into which pressurized oil flows from the outside, a first piston
port (53) for interconnecting the center hole (34) and the first hydraulic chamber
(47), a second piston port (54) for interconnecting the center hole (34) and the
second hydraulic chamber (48), and a return port (52) from which pressurized oil
flows.
Inventors:
NISHIYAMA TOSHIHIKO (JP)
HORI SHUUJI (JP)
IINO TAKAHISA (JP)
KOZUKA DAISUKE (JP)
HORI SHUUJI (JP)
IINO TAKAHISA (JP)
KOZUKA DAISUKE (JP)
Application Number:
PCT/JP2007/068653
Publication Date:
April 10, 2008
Filing Date:
September 26, 2007
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
NISHIYAMA TOSHIHIKO (JP)
HORI SHUUJI (JP)
IINO TAKAHISA (JP)
KOZUKA DAISUKE (JP)
NISHIYAMA TOSHIHIKO (JP)
HORI SHUUJI (JP)
IINO TAKAHISA (JP)
KOZUKA DAISUKE (JP)
International Classes:
F02B37/24; F01D17/16; F01D25/24; F15B13/042
Foreign References:
| JP2004084545A | 2004-03-18 | |||
| JPS57134401U | 1982-08-21 | |||
| JPS6383407A | 1988-04-14 |
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (Ogikubo TM Building26-13, Ogikubo 5-chom, Suginami-ku Tokyo, JP)
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