OUTBOARD MOTOR - YAMAHA MOTOR CO LTD

Title:

OUTBOARD MOTOR

Document Type and Number:

Japanese Patent JP2023152100

Kind Code:

A

Abstract:

To efficiently send cooling water to an engine by a plurality of pumps, and downsize an outboard motor.SOLUTION: An outboard motor comprises an engine, an upper case, a lower case, a cavitation plate, a transmission mechanism, a cooling water passage, a first pump, and a second pump. The transmission mechanism includes a drive shaft and a propeller shaft. The cooling water passage is connected to the engine, and is arranged in the upper case and the lower case. The first pump is arranged above the cavitation plate. The first pump is connected to the drive shaft, and sends cooling water to the engine via the cooling passage. The second pump is driven by the driving force of the transmission mechanism, and sends cooling water to the engine via the cooling passage.SELECTED DRAWING: Figure 1

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