Title:
SHIP PROPULSION MACHINE AND SHIP
Document Type and Number:
Japanese Patent JP2023158781
Kind Code:
A
Abstract:
To provide a ship propulsion machine and a ship capable of stabilizing engine speed at the blow-up time of an over revolution.SOLUTION: An outboard engine 101 comprises an engine 1, an engine speed detection unit 4 to detect the blow-up of the engine speed, and a control unit 5 to control the suppression of the engine speed. The control unit 5 performs a first accidental fire control to determine whether or not a cylinder 1a is misfired for suppressing the engine speed when it is determined that the first blow-up of the engine speed to be an over revolution occurs based on the detected result by the engine speed detection unit 4. The control unit performs a subsequent accidental fire control to determine whether or not the cylinder 1a is misfired for suppressing the engine speed when it is determined that the first blow-up of the engine speed is followed by the subsequent blow-up of the engine speed to be the over revolution based on the engine speed of the detected result by the engine speed detection unit 4 not based on rate of change of the engine speed.SELECTED DRAWING: Figure 2
Inventors:
IWAKI RYUTARO
SUZUKI JUNSEI
NANNICHI TAIICHIRO
KASHIWAYAMA TOMOYUKI
SUZUKI JUNSEI
NANNICHI TAIICHIRO
KASHIWAYAMA TOMOYUKI
Application Number:
JP2022068763A
Publication Date:
October 31, 2023
Filing Date:
April 19, 2022
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD
International Classes:
B63H21/21; B63H20/00; F02D17/02; F02D41/04
Attorney, Agent or Firm:
Hirokazu Miyazono