Sanshin Kogyo Kabushiki Kaisha

Yamaha Hatsudoki Kabushiki Kaisha

Yamaha Marine Kabushiki Kaisha

Akihiro Onoue

Takayoshi Suzuki

Satoru Hamada

Noriyoshi Hiraoka

Atsushi Kumita

Yoshiaki Tasaka

Yuki Ikegaya

Yoshikazu Nakayasu

Takahiro Oguma

Morihiko Nanjo

Satoshi Ishikawa

Hiroaki Fujimoto

Kimitaka Saruwatari

Toshio Suzuki

Yoshiyuki Kadobayashi

Kohei Yamaguchi

Norimichi Harada

Masaru Suemori

Hideki Saitoh

Manami Oyama

Hisayoshi Yoshino

Masanori Takahashi

Daisuke Nakamura

Hitoshi Watanabe

Ryoji Nakahama

Atsushi Isogawa

Yoshibumi Iwata

Hiroshi Ogino

Yukinori Kashima

Michihiro Taguchi

Noriyuki Natsume

Eiichiro Tsujii

Hirofumi Imaeda

Yasuo Suganuma

Kouei Kokubo

Masahiro Matsumoto

Masahiro Furuki

Ryouji Nakahama

Kohji Abe

In a boat including a hull, when the hull is moved laterally based on an output from the outboard motor, the hull rolls, which may cause discomfort to a user or passengers. To compensate for this, a lateral movement control method for the boat including the hull and the outboard motor includes generating a propulsion force to laterally move the hull with the output of the outboard motor, and executing a roll reduction process to reduce a roll angle of the hull at a time of laterally moving the hull.

Boat and lateral movement control method for boat

An apparatus for judging presence or absence of an abnormality of a marine vessel includes a controller configured or programmed to function as an estimating unit to estimate a marine vessel speed and a pitch angle of a hull of the marine vessel based on a propulsion force of a marine vessel propulsion device and an attitude of the marine vessel propulsion device and a judging unit, and a measuring unit to measure an actual marine vessel speed and an actual pitch angle. The judging unit judges the presence or absence of the abnormality based on at least one of a comparison result between the estimated marine vessel speed estimated by the estimating unit and the actual marine vessel speed measured by the measuring unit or a comparison result between the estimated pitch angle estimated by the estimating unit and the actual pitch angle measured by the measuring unit.

Apparatus for judging abnormality of marine vessel, method for judging abnormality of marine vessel, and marine vessel

A propulsion system for a vessel includes an engine propulsion unit that provides a propulsive force to a hull by using an engine as a power source, an electric propulsion unit that provides a propulsive force to the hull by using an electric motor as a power source, a storing mechanism that is displaced from an actuating position to actuate the electric propulsion unit to a storing position to store the electric propulsion unit and performs a storing operation to store the electric propulsion unit, and an interlock controller that interlocks a storing operation of the storing mechanism with generation of a propulsive force by the engine propulsion unit.

Vessel propulsion system and vessel including the same

An outboard motor includes an engine, a drive shaft, and a shift shaft disposed forward of the drive shaft. The shift shaft includes a first shift shaft that extends in an upward-downward direction, a second shift shaft disposed below the first shift shaft and spaced apart from and rearward of the first shift shaft, the second shift shaft extending in the upward-downward direction, and a shift force transmission to transmit, to the second shift shaft, a shift force applied to the first shift shaft.

Outboard motor and marine vessel

An outboard motor includes an engine, a propeller shaft that rotates together with a propeller and extends in a forward-rearward direction, and a lower case that houses the propeller shaft. The lower case includes a front case and a rear case separate from the front case and positioned rearward of the front case, and the front case and the rear case are assembled to each other.

A marine propulsion unit includes a motor driving force transmission shaft, a propeller shaft, and a shaft including one of a switching shaft and a drive shaft, and one of the motor driving force transmission shaft and the shaft includes a hollow member, and the other of the motor driving force transmission shaft and the shaft is disposed inside the hollow member.

Marine propulsion unit

An engine includes a crankshaft extending in a vertical direction. A drive shaft is connected to the crankshaft and coaxial with the crankshaft. A water intake passage is connected to the engine. A water pump is connected to the water intake passage. The water pump includes a pump shaft. The pump shaft is eccentrically mounted with respect to the drive shaft and parallel or substantially parallel to the drive shaft. The pump shaft rotates according to rotation of the drive shaft.

Outboard motor

When a shift member is in a first position, a first clutch couples a second drive shaft to a first drive shaft. When the shift member is in the first position, a second clutch decouples a first gear from the first drive shaft. When the shift member is in the first position, a third clutch decouples a second gear from the second drive shaft.

An electric propulsion device includes a duct having a cylindrical shape and that includes a stator. A rim includes a rotor rotatable relative to the duct, and a plurality of fins. A bracket supports the duct so as to allow the duct to turn about a turning axis that intersects with the rotation axis of the rim, and a turning actuator that integrally turns the duct and the rim. The turning actuator is fixed to the bracket, and the duct is turnable relative to the bracket.

Electric propulsion device

A marine propulsion device includes a power source, a steering handle, and an accelerator grip that moves with respect to the steering handle. A movement region of the accelerator grip includes a forward movement rotation region, a reverse movement rotation region and an axis movement region. In the forward movement rotation region, the accelerator grip is operated to rotate so as to obtain a drive force in a forward movement direction. In the reverse movement rotation region the accelerator grip is operated to rotate so as to obtain a drive force in a reverse movement direction. The axis movement region is provided between the forward movement rotation region and the reverse movement rotation region. In the axis movement region, the accelerator grip is moved in the extensional direction of a rotation axis.

Marine propulsion device

A boat maneuvering system includes a power source, a first operating device configured to operate the power source, a first controller configured to control the power source, a second controller configured to accept an operation instruction input from the first operating device and to output a control signal to the first controller, a first electric power line that connects the power source to a battery to convey electric power therebetween, a second electric power line that connects the second controller to the battery to convey electric power therebetween, a communication path that connects the first controller and the second controller to convey a signal therebetween, and a signal conversion portion provided on the communication path to electrically separate the first and second controllers.

Boat maneuvering system

A boat maneuvering system includes a power source, a first controller that controls the power source, a display device that has a touch panel function and displays an operation screen configured to operate the movement of a boat, and a second controller that is communicatively connected to the first controller and enables an operation of the boat through the operation screen when detecting a plurality of operations on the display device simultaneously.

A boat maneuvering system, including a first power source having a first controller, a first operating device having a second controller configured to receive a first operation instruction and to output a first control signal for controlling the first power source, a second power source provided separately from the first power source, and a second operating device provided separately from the first operating device for operating the first and second power sources. The second operating device includes a third controller provided on a communication path connecting the first and second controllers, the third controller being configured to receive the first control signal, generate a second control signal, and output the second control signal to the first controller, and to receive a second operation instruction via the second operating device, generate a third control signal, and output the third control signal to the second power source.

A valve actuating system for actuating at least one valve of an engine includes an improved mechanism for varying the timing and/or lift of the valve. The mechanism uses two adjacent rockers that cooperate with two adjacent cams of a camshaft. In one operating condition, movement of a first rocker is transmitted to the valve through the second rocker and in another operating condition only the movement of the second rocker is transmitted to the valve. The rockers preferably cooperate with cams having different lifts. The lift of the cam driving the first rocker preferably is greater than the lift of the cam driving the second rocker.

Growing community of inventors

Hamamatsu, Japan

Akihiro Onoue