PROBLEM TO BE SOLVED: To achieve the size reduction of an internal combustion engine in which an exhaust gas sensor and a temperature sensor are attached to an engine body including a cylinder head including an ignition plug and a cam chain passage formed on respective both sides of a line connecting opening end centers of an intake port and an exhaust port to a combustion chamber, by collectively attaching the temperature sensor and the exhaust sensor compactly.SOLUTION: An exhaust gas sensor 80 is attached to an exhaust gas sensor attachment portion 82 formed in a cylinder head 28 so as to protrude a detection unit 80a of the exhaust gas sensor 80 into a curved passage portion 45c of an exhaust port 45 from outside of a curve, and a temperature sensor 81 is attached to a temperature sensor attachment portion 83 formed in the cylinder head 28 near the exhaust gas sensor attachment portion 82 so as to protrude a detection unit 81a of the temperature sensor 81 into a cam chain passage 65.
【課題】燃焼室への吸気ポートおよび排気ポートの開口端中心を結ぶ直線の両側に点火プラグおよびカムチェーン通路が形成されるシリンダヘッドを含む機関本体に、排気ガスセンサおよび温度センサが取付けられる内燃機関において、温度センサおよび排気ガスセンサをコンパクトに纏めて機関本体に取付けるようにして小型化を可能とする。【解決手段】シリンダヘッド28に形成される排気ガスセンサ取付け部82に、排気ガスセンサ80がその検出部80aを排気ポート45の湾曲通路部45c内にその湾曲外側から突入させるようにして取付けられ、排気ガスセンサ取付け部82の近傍でシリンダヘッド28に形成される温度センサ取付け部83に、温度センサ81がその検出部81aをカムチェーン通路65内に突入させるようにして取付けられる。【選択図】 図4
CYLINDER HEAD STRUCTURE IN INTERNAL COMBUSTION ENGINE
内燃機関におけるシリンダヘッド構造
2015-10-05
Patent
Electronic Resource
Japanese
IPC: | F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL / F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES , Zylinder, Kolben oder Gehäuse für Brennkraftmaschinen |
CYLINDER HEAD AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH THE SAME
European Patent Office | 2017
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