Yamaha Hatsudoki Kabushiki Kaisha

Shiro Fukuda

Jun Noguchi

Yuki Yamaguchi

Yasunori Murayama

Hideki Furuta

Shunichi Akama

Kazuyuki Umiguchi

An absolute encoder configured to, when a rotation range of a measurement target member is limited by a brake mechanism, generate an AB-phase signal and a Z-phase signal for calculating a rotation angle of the measurement target member. The absolute encoder includes a brake mechanism, a plurality of Z-phase-signal-detection-target portions each having a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion, a plurality of AB-phase-signal-detection-target portions each located between a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion that are adjacent to each other in a circumferential direction, to thereby form a plurality of restriction ranges each including at least one of the Z-phase-signal-rise-detection-target portions and at least one of the Z-phase-signal-fall-detection-target portions. An interval in the circumferential direction between a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion that are adjacent to each other in the circumferential direction is different among the plurality of restriction ranges.

Absolute encoder

An outboard motor performs assist control of assisting rotation of a crankshaft and performs power running rotation speed range expansion control of expanding a power running rotation speed range of a rotary electric machine in a state in which the crankshaft is rotated at a rotation speed within a cranking rotation speed range due to rotation of a rope reel.

Outboard motor, engine starter, and engine starting method

A power supply system for an outboard motor includes a first terminal configured to supply electric power converted by a converting device to an engine accessory and to be capable of supplying the electric power to a portion external to an engine cover and a second terminal branched from a branch portion between the converting device and the engine accessory, configured to be capable of supplying the electric power to a portion external to the engine cover at a voltage higher than the voltage of the first terminal.

Power supply system for outboard motor, outboard motor boat, and outboard motor

An outboard motor power generation system includes an engine, a power generator, a converting device configured to convert alternating-current power into direct-current power, an engine cover configured to cover the engine, the power generator, and the converting device, a battery, and a transformer provided on an electric pathway between the converting device and the battery and configured to raise the voltage of the direct-current power output from the converting device relative to the charge voltage of the battery.

Growing community of inventors

Iwata, Japan

Shiro Fukuda