Patent ID: 9051040
Filing Date: 2015-06-09
Classification: B63H,F01P

Abstract:
1. An outboard engine unit including an engine, a transmission, and a propeller shaft, the transmission having an input shaft connected to the engine and an output shaft connected to the propeller shaft, the outboard engine unit comprising: a water pump disposed on an end portion of the input shaft for drawing a cooling water from an outside of the outboard engine unit; a plurality of cooling water feeding passages interconnecting the water pump and a cooling water inlet of the engine for directing the cooling water drawn by the water pump to the cooling water inlet; the plurality of cooling water feeding passages being disposed around a plurality of transmission gears disposed on the input shaft of the transmission; a cooling water discharging passage communicating with a cooling water outlet of the engine for discharging from the engine a cooling water having cooled the engine, the cooling water discharging passage being disposed above the transmission and rearwardly of the output shaft of the transmission; and a lubricating oil passageway for directing a lubricating oil to lubricate the transmission, wherein the transmission comprises a case including a sidewall facing the cooling water discharging passage, and an upper portion opposed to the cooling water discharging passage, and the lubricating oil passageway is disposed along the sidewall and the upper portion.