公开(公告)号：US20150167536A1

公开(公告)日：2015-06-18

申请号：US14345640

申请日：2013-08-12

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tadatomo Toda ,  Mitsunori Wasada ,  Tadasu Hashiguchi ,  Takashi Youso ,  Kazuhiro Nagatsu

IPC: F02B23/02 ,  F02F3/24 ,  F02F1/22

CPC classification number: F02B23/02 ,  F02B11/00 ,  F02B23/08 ,  F02B23/10 ,  F02B23/101 ,  F02B2023/085 ,  F02B2023/102 ,  F02F1/22 ,  F02F3/24 ,  F02F3/28 ,  Y02T10/12 ,  Y02T10/125

Abstract: The axial line of an intake valve is inclined, and a gap between a piston crown surface and a valve head of the intake valve expands in accordance with the approach of the crankshaft axis. A relationship of G2>G1 is fulfilled, where G1 stands for a minimum gap between the lower surface of the cylinder head that is positioned between the intake valve and the exhaust valve facing the intake valve, with the crankshaft axis being interposed therebetween, and the piston crown surface in a top dead center, and G2 stands for a gap at a position that is the closest to the crankshaft axis, from among the gaps between the lower surface of the valve head of the intake valve and the piston crown surface at a center timing of a valve overlap period in which the intake valve and the exhaust valve are both open.

Abstract translation: 进气门的轴线倾斜，并且进气门的活塞冠面和阀头之间的间隙根据曲轴轴线的接近而膨胀。 满足G2> G1的关系，其中G1表示位于进气门和排气阀之间的面对进气门的气缸盖的下表面之间的最小间隙，曲轴轴线介于两者之间， 活塞冠表面位于上止点，G2表示在最接近曲轴轴线的位置处的间隙，在进气门的阀头的下表面与活塞冠表面之间的间隙中 进气门和排气门都打开的阀重叠时段的中心定时。

公开(公告)号：US09267421B2

公开(公告)日：2016-02-23

申请号：US14345640

申请日：2013-08-12

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tadatomo Toda ,  Mitsunori Wasada ,  Tadasu Hashiguchi ,  Takashi Youso ,  Kazuhiro Nagatsu

IPC: F02B23/02 ,  F02F3/24 ,  F02B11/00 ,  F02B23/08 ,  F02B23/10 ,  F02F1/22 ,  F02F3/28

CPC classification number: F02B23/02 ,  F02B11/00 ,  F02B23/08 ,  F02B23/10 ,  F02B23/101 ,  F02B2023/085 ,  F02B2023/102 ,  F02F1/22 ,  F02F3/24 ,  F02F3/28 ,  Y02T10/12 ,  Y02T10/125

Abstract: The axial line of an intake valve is inclined, and a gap between a piston crown surface and a valve head of the intake valve expands in accordance with the approach of the crankshaft axis. A relationship of G2>G1 is fulfilled, where G1 stands for a minimum gap between the lower surface of the cylinder head that is positioned between the intake valve and the exhaust valve facing the intake valve, with the crankshaft axis being interposed therebetween, and the piston crown surface in a top dead center, and G2 stands for a gap at a position that is the closest to the crankshaft axis, from among the gaps between the lower surface of the valve head of the intake valve and the piston crown surface at a center timing of a valve overlap period in which the intake valve and the exhaust valve are both open.

Abstract translation: 进气门的轴线倾斜，并且进气门的活塞冠面和阀头之间的间隙根据曲轴轴线的接近而膨胀。 满足G2> G1的关系，其中G1表示位于进气门和排气阀之间的面对进气门的气缸盖的下表面之间的最小间隙，曲轴轴线介于两者之间， 活塞冠表面位于上止点，G2表示在最接近曲轴轴线的位置处的间隙，在进气门的阀头的下表面与活塞冠表面之间的间隙中 进气门和排气门都打开的阀重叠时段的中心定时。