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    • 1. 发明申请
    • CYLINDER HEAD
    • 气缸盖
    • WO2018050789A1
    • 2018-03-22
    • PCT/EP2017/073214
    • 2017-09-14
    • PERKINS ENGINES COMPANY LIMITED
    • TURNOCK, Adam D.SMITH, E. JamesSTONE, Andrew G.SCHWARZL, MarkusKNOLLMAYER, ChristofZUK, Andreas
    • F02F1/42F02B31/02
    • The disclosure provides a cylinder head (10) for an internal combustion engine. The cylinder head (10) comprises an inlet port (12) comprising a main inlet passage (40) bifurcating into a first inlet passage (41 ) and a second inlet passage (42), the first inlet passage (41 ) terminating at a first inlet valve hole (43) and the second inlet passage (42) terminating at a second inlet valve hole (44). The first inlet passage (41) comprises a helical ramp portion (50) upstream of the first inlet valve hole (43), for inducing a helical flow of inlet gases into a cylinder associated with the cylinder head (10) and thereby imparting swirl thereto, The helical ramp portion (50) comprises a surface (51) that extends towards the first inlet valve hole (43), the surface (51 ) having an angle selected from a range of from 55° to 63° relative to a longitudinal axis through a centre-point of the first inlet valve hole (43). The second inlet passage (42) is substantially linear, for inducing a tangential flow of inlet gases into the cylinder and thereby imparting swirl thereto. The cylinder head (10) further comprises an exhaust port (14) comprising a main exhaust passage (71 ) bifurcating into a first exhaust passage (71 ) and a second exhaust passage (72), the first exhaust passage terminating at a first exhaust valve hole (73) and the second exhaust passage terminating at a second exhaust valve hole (74). The cylinder head (10) further comprises a threaded spark plug sleeve port (31 ) and first and second coolant jackets (80,90).
    • 本公开提供了一种用于内燃机的气缸盖(10)。 汽缸盖(10)包括具有分为第一入口通道(41)和第二入口通道(42)的主入口通道(40)的入口端口(12),第一入口通道(41)终止于第一入口通道 入口阀孔(43)和第二入口通道(42)终止于第二入口阀孔(44)。 第一入口通道(41)包括位于第一入口阀孔(43)上游的螺旋形斜坡部分(50),用于引入入口气体的螺旋形流入与气缸盖(10)相关联的气缸中并由此对其施加涡流 所述螺旋斜坡部分(50)包括朝向所述第一入口阀孔(43)延伸的表面(51),所述表面(51)具有从55°至55°的范围中选择的角度。 到63° 相对于穿过第一入口阀孔(43)的中心点的纵向轴线。 第二入口通道(42)基本上是线性的,用于引入进入气体的切向气流并由此对其施加涡流。 汽缸盖(10)还包括排气口(14),该排气口包括分支成第一排气通道(71)和第二排气通道(72)的主排气通道(71),第一排气通道终止于第一排气门 所述第二排气通道终止于第二排气阀孔(74)。 气缸盖(10)还包括带螺纹的火花塞套筒端口(31)以及第一和第二冷却剂套(80,90)。