Suzuki Motor Corporation

Morio Kishimoto

Jun Ito

Saki Nozue

Yuna Ishida

Chiaki Suzuki

A breather device for an outboard motor engine, the outboard motor engine including a breather chamber formed in an engine main body, and an intake passage guiding air into the engine main body, in which an intake port of the intake passage is open inside an engine cover that covers the engine main body, the breather device includes a resonator chamber communicating with an upstream side of the intake passage, and a breather passage extending from the breather chamber and communicating with the resonator chamber.

Breather device for outboard motor engine

First to fourth exhaust passages are provided in a raw blank of a cylinder block, which can be used for both a first exhaust route and a second exhaust route, one of which is selected for use as an exhaust passage. In the first exhaust route, a fifth exhaust passage couples between opening ends of the first and second exhaust passages and is formed in a separate member from the cylinder block, exhaust gas is allowed to flow via the fourth, first, fifth, second, and third exhaust passages, and a catalyst is placed in the exhaust passages. In the second exhaust route, a communication hole is provided in a partition wall between the fourth exhaust passage and the second exhaust passage while the opening ends of the first and second exhaust passages are closed, and the exhaust gas is allowed to flow via the fourth, second, and third exhaust passages.

Ship propulsion device

An outboard motor includes a water jacket provided in a water-cooled engine, a first channel configured to allow a downstream-side end of a coolant flow of the water jacket to communicate with the external air, a thermo-valve provided between a downstream-side end of the coolant flow of the water jacket and an upstream-side end of the coolant flow of the first channel, a second channel configured to allow an upstream side of the coolant flow of the thermo-valve to communicate with the external air, and a second valve configured to open or close a second channel.

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Hamamatsu, Japan

Morio Kishimoto