Title:
船舶の推進装置
Document Type and Number:
Japanese Patent JP4201195
Kind Code:
B2
Abstract:
A propulsion unit can comprise a propeller and an internal combustion engine for driving the propeller. The propulsion unit can include a gear switching device for changing a drive mode of the propulsion unit between a forward drive mode, a reverse drive mode and a neutral mode. A throttle valve can be configured to control an opening of a first intake passage of the engine, and an idle speed control valve can be configured to control an opening of a second intake passage downstream of the first intake passage can also be provided. The propulsion unit can also comprise a control unit for controlling the idle speed control valve, wherein the control unit is configured to bring the engine to a first target rotational speed when the propeller is in the neutral mode, and to a second target rotational speed when the propeller is in the forward or reverse drive mode, wherein the first rotational speed is greater than the second rotational speed.
Inventors:
Hideaki Masui
Chiju Saito
Chiju Saito
Application Number:
JP2004115936A
Publication Date:
December 24, 2008
Filing Date:
April 09, 2004
Export Citation:
Assignee:
Yamaha Marine Co., Ltd.
International Classes:
B63H20/00; F02D29/02; B63H21/22; F02B61/04; F02D29/00; F02D31/00; F02D41/08; F02D45/00
Domestic Patent References:
| JP2002201974A | ||||
| JP2001152896A | ||||
| JP10176560A | ||||
| JP2001152895A | ||||
| JP200141078A | ||||
| JP1047128A | ||||
| JP200045836A |
Attorney, Agent or Firm:
Tadao Sawada