To provide a marine propulsion device which can switch motor propulsion and hybrid propulsion, and capable of achieving high operability by preventing stagnating of rotational speed while switching.
The rotational speed of a motor generator M/G 20 in motor propulsion and the rotational speed of main engine in hybrid propulsion are controlled in a ramp function with a relatively high rate of increase. In synchronizing and increasing rotational speeds of the M/G and the main engine while engaging a clutch 7 to switch motor propulsion to hybrid propulsion, the rotational speeds of the M/G and the main engine are controlled in a ramp function with a relatively low rate of increase. The increase in the switching rotational speed becomes moderate during a clutch engagement operation and stagnating of the rotational speeds are eliminated, thereby to continuously switch an operational mode without causing an uncomfortable feeling.
SHIRAISHI KOICHI
HIGUCHI KAZUNAO
TAKEI KOJI
TASHIRO NOBUHIRO
YAMADA TETSUSHI
| JP2011063256A | 2011-03-31 | |||
| JP2004257294A | 2004-09-16 | |||
| JP2004255972A | 2004-09-16 | |||
| JP2007015679A | 2007-01-25 | |||
| JP2009196516A | 2009-09-03 |
Noriyuki Suzuki
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