Title:
WATER-COOLED ENGINE AND SMALL PLANING BOAT FURNISHED WITH IT
Document Type and Number:
Japanese Patent JP3373798
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lower engine speed without depending on partial flame-out driving in the case when cooling water does not normally flow to a water-cooled engine.
SOLUTION: Engine speed is detected by a tachometer 34 and pressure of cooling water W in the inside of a cooling water passage is detected by a pressure sensor 35 on a water-cooled engine 4 furnished with the cooling water passage 20 having an intake port 23 to take in the cooling water W from outside and a discharge port to discharge the cooling water after engine cooling outside. Ignition timing of an ignition plug is lagged by a lag means 38 at the time when detected cooling water pressure is lower than an allowable value to change in accordance with engine speed. Consequently, engine speed is automatically lowered when the cooling water W does not smoothly flow to the engine 4.
Inventors:
Atsunori Ozaki
Kazuhisa Kuroshita
Kazuhisa Kuroshita
Application Number:
JP32936898A
Publication Date:
February 04, 2003
Filing Date:
November 19, 1998
Export Citation:
Assignee:
Kawasaki Heavy Industries, Ltd.
International Classes:
B63H11/08; B63B35/73; B63H21/00; F01N3/24; F01P3/20; F02P5/15; (IPC1-7): F02P5/15; B63B35/73; B63H11/08; B63H21/00; F01N3/24; F01P3/20
Domestic Patent References:
| JP6436399A | ||||
| JP10278888A | ||||
| JP726953A | ||||
| JP953439A | ||||
| JP6286691A | ||||
| JP988586A |
Attorney, Agent or Firm:
Shuji Sugimoto