To make hunting caused due to temperature differences of cooling water flowing around a thermostat valve less likely to occur to perform stable temperature control.SOLUTION: A marine propulsion device 10 has an internal combustion engine 12. The internal combustion engine 12 includes: cooling water passages (20, 22, 32, 40) provided in an engine main body 14; a thermostat valve 34 provided in the cooling water passage to open and close a head side cooling water discharge passage 32 according to a temperature of cooling water in the cooling water passage; and a cylindrical cooling water introduction member 96 surrounding the thermostat valve 34.SELECTED DRAWING: Figure 5
【課題】サーモスタット弁の周りを流れる冷却水の温度の差異に起因して発生するハンチングが生じ難く、安定した温度制御が行われるようにすること。【解決手段】船舶推進装置10は内燃機関12を有し、内燃機関12はそのエンジン本体14に設けられた冷却水通路(20、22、32、40)と、冷却水通路内に設けられ、冷却水通路内の冷却水の温度に応じてヘッド側冷却水排出通路32を開閉するサーモスタット弁34と、サーモスタット弁34を取り囲む円筒状の冷却水導入部材96とを備える。【選択図】図5
MARINE PROPULSION DEVICE
船舶用推進装置
2024-10-01
Patent
Electronic Resource
Japanese
COOLING SYSTEM FOR MARINE PROPULSION DEVICE, AND MARINE PROPULSION DEVICE
European Patent Office | 2022
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