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    • 4. 发明公开
    • DOUBLE-LINK PISTON CRANK MECHANISM FOR INTERNAL COMBUSTION ENGINE
    • DOPPELVERKNÜPFUNGS-KOLBENKURBELMECHANISMUSFÜREINEN VERBRENNUNGSMOTOR
    • EP3037642A4
    • 2016-08-24
    • EP14837631
    • 2014-07-30
    • NISSAN MOTOR
    • TANABE TAKASHIKOBAYASHI MAKOTOMOTEKI KATSUYA
    • F02B75/04F01M1/06F01M1/08F02B75/32F16C3/14
    • F16C7/023F01M11/02F01M2001/062F01M2011/027F02B41/04F02B75/04F02B75/045F16C3/14F16C3/16F16C3/18F16J1/14
    • An opening (35a) on one end side of a pin-boss oil passage (35) opens to the inner circumferential surface of a pin boss part (14) of an upper link (3), while an opening (35b) on the other end side thereof opens to the outer circumferential surface of the pin boss part (14) of the upper link (3). A lower-link oil passage (36) has a one-end-side opening (36a) structured to open to a pin-boss-facing surface (33) of the lower link (2) facing the outer circumferential surface of the pin boss part (14) of the upper link (3) and its other-end-side opening (36b) structured to open to a crankpin bearing surface (37). The lower-link oil passage (36) is configured to point, at a prescribed crankangle, to a specified end edge of end edges of the other-end-side opening (35b) of the pin-boss oil passage (35), the specified end edge facing one end side of the upper link (3).
    • 销凸台油路(35)的一端侧的开口(35a)向上连杆(3)的销毂部(14)的内周面开口,而另一方的开口(35b) 其端侧向上连杆(3)的销凸台部(14)的外周面开口。 下连杆油路(36)具有一个一端侧开口(36a),该开口构造成向下连杆(2)的与销凸台相对的表面(33)开口,该表面面向销凸台的外圆周表面 上连杆(3)的部分(14)和其另一端侧开口(36b)构造成向曲轴销轴承表面(37)开口。 下连杆油路36被构造成在规定的曲柄角处指向销凸台油路(35)的另一端侧开口(35b)的端缘的规定的端缘, 指定的端边缘面向上连杆(3)的一端侧。