COOLING STRUCTURE OF INTERNAL COMBUSTION ENGINE

• Main Authors: EBISU EISAKU, NISHIDA RYOTARO
• Format: Patent
• Language: English; Japanese
• Published: 06.04.2017
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To easily and surely dispose a bypass water jacket bypassing a cylinder block in compact.SOLUTION: In a combustion chamber peripheral water jacket (hereinafter, WJ) 112, cooling liquid supplied from a water pump 200 connected to a main cooling liquid inlet 110 disposed at one end side in a crank axial direction, flows toward the other end side in a crank axial direction, and in a head WJ116 communicated with the combustion chamber peripheral WJ at the other end side of the crank axial direction, the cooling water flows toward its one end side. An engine 100 includes a bypass WJ 113 for bypassing the combustion chamber peripheral WJ, and the cooling liquid is directly supplied from the water pump to a sub-cooling liquid inlet 111 disposed at its upstream end portion in the bypass WJ. A downstream end portion of the combustion chamber peripheral WJ is provided with a confluent portion 114 communicated with the downstream end portion of the bypass WJ.SELECTED DRAWING: Figure 1 【課題】シリンダブロックを迂回するバイパスウォータジャケットを容易に且つ確実に、さらにはコンパクトに配設できるようにする。【解決手段】燃焼室周囲ウォータジャケット（以下、ＷＪ）１１２には、クランク軸方向の一端側に設けられた主冷却液入口１１０と接続されたウォータポンプ２００により供給される冷却液がクランク軸方向の他端側に向かって流れ、ヘッドＷＪ１１６には、燃焼室周囲ＷＪとクランク軸方向の他端側で連通し、その一端側に向かって冷却液が流れる。エンジン１００は、燃焼室周囲ＷＪを迂回するためのバイパスＷＪ１１３を備え、該バイパスＷＪは、その上流端部に設けられた副冷却液入口に１１１、ウォータポンプから冷却液が直接に供給される。燃焼室周囲ＷＪの下流端部には、バイパスＷＪの下流端部と連通する合流部１１４が設けられている。【選択図】図１