Title:
WATER JET PROPULSION BOAT
Document Type and Number:
Japanese Patent JP3898020
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To maintain turning performance by delaying time to drop engine speed down to idle speed when a throttle lever is released during navigation.
SOLUTION: A deceleration means is comprised of a diaphragm 39 and a orifice 43 and a deceleration releasing means is comprised of a solenoid valve 50. The deceleration means 39, 43 gradually decelerate rotational movement in a valve closing direction of a throttle valve 32 to control for delaying time to drop engine speed down to idle speed when the throttle lever 31 is released during navigation. The deceleration releasing means 50 releases deceleration of rotational movement of the throttle valve 32 to control to immediately drop engine speed down to idle speed when a time necessary for maintaining turning performance passes.
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Inventors:
Yanagihara
Ryoichi Nakase
Ryoichi Nakase
Application Number:
JP2001305150A
Publication Date:
March 28, 2007
Filing Date:
October 01, 2001
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
B41F7/02; F02D9/02; B41F13/10; B63B35/73; B63H11/08; F02D11/04; F02D41/12; (IPC1-7): F02D9/02; B63B35/73; B63H11/08; F02D11/04; F02D41/12
Domestic Patent References:
| JP5246380A | ||||
| JP2130227A |
Attorney, Agent or Firm:
Etsushi Kotani
Kyuichi Ueki
Yoshio Asano
Kyuichi Ueki
Yoshio Asano
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