Marine propulsion system and marine vessel
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsAkihiro TAGATA, Yoshinori YAGI, Hirotaka TAMOTO
Life of this patent
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Abstract
A marine propulsion system includes a propulsion device, an up-and-down movement sensor, and a controller configured or programmed to control driving of the propulsion device and perform a wave control including an attitude control to reduce an up-and-down attitude change of a hull by temporarily reducing a vessel speed based on a measurement result of the up-and-down movement sensor each time a marine vessel rides over a wave. The controller is configured or programmed to, in the wave control, perform the attitude control when it is determined that a wave condition is a head wave, and not perform the attitude control when it is determined that the wave condition is a following wave.
Claims20
A marine propulsion system comprising:
- a propulsion device to be provided on or in a hull;
- an up-and-down movement sensor to measure at least one of an up-and-down speed or an up-and-down acceleration of the hull;
- and
- a controller configured or programmed to control driving of the propulsion device, and perform a wave control including an attitude control to reduce an up-and-down attitude change of the hull by temporarily reducing a vessel speed based on a measurement result of the up-and-down movement sensor each time a marine vessel rides over a wave;
- wherein
- the controller is configured or programmed to, in the wave control, make a wave direction determination to determine whether a wave condition relative to the hull is a head wave or a following wave based on at least the measurement result of the up-and-down movement sensor, perform the attitude control when it is determined that the wave condition is the head wave, and not perform the attitude control when it is determined that the wave condition is the following wave.
A marine vessel comprising:
- a hull;
- and
- a marine propulsion system on or in the hull;
- wherein the marine propulsion system includes:
- a propulsion device on or in the hull;
- an up-and-down movement sensor to measure at least one of an up-and-down speed or an up-and-down acceleration of the hull;
- and
- a controller configured or programmed to control driving of the propulsion device, and perform a wave control including an attitude control to reduce an up-and-down attitude change of the hull by temporarily reducing a vessel speed based on a measurement result of the up-and-down movement sensor each time the marine vessel rides over a wave;
- and
- the controller is configured or programmed to, in the wave control, make a wave direction determination to determine whether a wave condition relative to the hull is a head wave or a following wave based on at least the measurement result of the up-and-down movement sensor, perform the attitude control when it is determined that the wave condition is the head wave, and not perform the attitude control when it is determined that the wave condition is the following wave.
Dependencies are inferred from the claim text.