| 摘要 |
PURPOSE:To smoothly perform return of lubricating oil and discharge of flow-by gas without lowering flow-by gas discharging performance even in case of lubricant oil movement in a cam shaft chamber. CONSTITUTION:The plural number of lubricating oil passages 11 and flow-by gas passages 12 are formed in the wall of a cylinder head 2. Said passages 11 are formed in the front and rear parts along the longitudinal direction of a car body in a cam shaft chamber 8, while said passages 12 are formed in the middle part along the longitudinal direction of the car body in the cam shaft chamber 8. The upper ends of lubricating oil passages 11 are provided with lubricating oil introducing ports 13 facing to said chamber 8, while the lower ends communicate with common passages 7a, 7b respectively. The upper ends of blow-by gass passages 12 are also provided with blow-by gas discharging ports 14 facing to the cam shaft chamber 8, while the lower ends communicate with one common passage 7a. |
