公开(公告)号：US20090241873A1

公开(公告)日：2009-10-01

申请号：US12361904

申请日：2009-01-29

申请人： Tomoyuki Muraoka ,  Hirofumi Higashi ,  Hideo Nakai ,  Akihiro Fujimoto ,  Jun Hoshikawa ,  Noritsugu Ohsawa ,  Tetsuji Tatsumi

发明人： Tomoyuki Muraoka ,  Hirofumi Higashi ,  Hideo Nakai ,  Akihiro Fujimoto ,  Jun Hoshikawa ,  Noritsugu Ohsawa ,  Tetsuji Tatsumi

IPC分类号： F01L1/34

CPC分类号： F01L1/34 ,  F01L1/356

摘要： A variable valve-operating system for an internal combustion engine, comprising a cylinder head having an intake or exhaust valve, a camshaft rotatably supported by the cylinder head, a cam body rotatably fitted around the camshaft and including a cam lobe having an outer peripheral surface for driving the valve and a boss protruding radially from the cam body, and a valve open period-varying mechanism supported on the camshaft and including an intermediate rotating member having a center of rotation offset from the camshaft, the mechanism transmits rotation of the camshaft to the boss of the cam body through the intermediate rotating member and also permits the valve open period of the valve to be varied through adjustment of the eccentric phase angle of the intermediate rotating member, wherein at least a part of the boss is so positioned as to overlap with the profile of a nose of the cam lobe when viewed in the axial direction of the cam body.

摘要翻译： 一种用于内燃机的可变气门操作系统，包括具有进气门或排气门的气缸盖，由气缸盖可旋转地支撑的凸轮轴;凸轮体，其可旋转地装配在凸轮轴周围，并且包括凸轮凸角，凸轮凸角具有外周面 用于驱动所述阀和从所述凸轮体径向突出的凸台，以及支撑在所述凸轮轴上并包括具有偏离所述凸轮轴的旋转中心的中间旋转构件的所述阀打开周期性变化机构，所述机构将所述凸轮轴的旋转传递到 凸轮体通过中间旋转构件的凸台，并且还允许通过调节中间旋转构件的偏心相角来改变阀的阀打开周期，其中凸台的至少一部分被定位成 当从凸轮轴的轴向观察时与凸轮凸角的鼻部的轮廓重叠。

公开(公告)号：US07739987B2

公开(公告)日：2010-06-22

申请号：US12277127

申请日：2008-11-24

申请人： Jun Hoshikawa ,  Hirofumi Higashi ,  Akibiro Fujimoto ,  Noritsugu Ohsawa ,  Tetsuji Tatsumi ,  Tomoyuki Muraoka ,  Hideo Nakai

发明人： Jun Hoshikawa ,  Hirofumi Higashi ,  Akibiro Fujimoto ,  Noritsugu Ohsawa ,  Tetsuji Tatsumi ,  Tomoyuki Muraoka ,  Hideo Nakai

IPC分类号： F01L1/34

CPC分类号： F01L1/34 ,  F01L1/356

摘要： The variable valve gear for an internal combustion engine includes a cam lobe that is rotatably supported by a cam drive shaft, and a variable valve mechanism that includes a drive arm fixed adjacent to one end of the cam lobe in the cam drive shaft, an eccentric shaft member that is swivelably supported at a position opposite to the cam lobe with respect to the drive arm in the cam drive shaft, has an outer circumferential surface eccentric to an axis of the cam drive shaft, and is adjustable in eccentricity, and an intermediate rotary member that is rotatably supported through a bearing member around the eccentric shaft member, and is connected to the drive arm, wherein the drive arm includes an end face that overlaps with an end face of the bearing member, when projecting along the axis of the cam drive shaft, and the end face of the drive arm is protruding further than the end face of the cam lobe toward the bearing member.

摘要翻译： 用于内燃机的可变气门齿轮包括由凸轮驱动轴可旋转地支撑的凸轮凸角和可变气门机构，该可变气门机构包括与凸轮驱动轴中的凸轮凸角的一端相邻固定的驱动臂，偏心 轴构件相对于凸轮驱动轴中的驱动臂可旋转地支撑在与凸轮凸角相对的位置处，具有偏心于凸轮驱动轴的轴线的外周表面，并且可偏心调节，并且中间件 旋转构件，其通过轴承构件可旋转地支撑在偏心轴构件周围，并且连接到驱动臂，其中，驱动臂包括与轴承构件的端面重叠的端面，当沿着 凸轮驱动轴，并且驱动臂的端面比凸轮凸角的朝向轴承构件的端面更突出。

公开(公告)号：US08869771B2

公开(公告)日：2014-10-28

申请号：US13214486

申请日：2011-08-22

申请人： Tomoyuki Muraoka ,  Shinichi Murata ,  Shinji Matsumura

发明人： Tomoyuki Muraoka ,  Shinichi Murata ,  Shinji Matsumura

IPC分类号： F02B23/00 ,  F02B23/08 ,  F02B31/00

CPC分类号： F02B23/08 ,  F02B31/00 ,  Y02T10/125 ,  Y02T10/146

摘要： A combustion chamber construction includes inlet and exhaust side sloping surfaces. The inlet side sloping surface is formed on one side of a pentroof apex portion as a boundary and which has an inlet port. The exhaust side sloping surface is formed on the other side of the pentroof apex portion as the boundary and which has an exhaust port. A flow improving portion is formed between the inlet port and exhaust port. The flow improving portion includes an inlet flow surface which is formed by recessing part of the inlet side sloping surface and an exhaust side guide surface. One end of the exhaust side guide surface is connected to an exhaust surface of the exhaust side sloping surface and the other end is connected to the inlet flow surface. An angle formed by the inlet flow surface and the exhaust side guide surface is smaller than or equal to an angle formed by the exhaust surface and the exhaust side guide surface.

摘要翻译： 燃烧室结构包括入口和排气侧倾斜表面。 入口侧倾斜面形成在作为边界的顶端顶端的一侧，并且具有入口。 排气侧倾斜面形成在作为边界的顶点顶端的另一侧，并且具有排气口。 在入口和排气口之间形成有流动改善部分。 流动改善部包括通过使入口侧倾斜面的一部分和排气侧引导面凹入而形成的入口流动面。 排气侧引导面的一端与排气侧倾斜面的排气面连接，另一端与入口流动面连接。 由入口流动表面和排气侧引导表面形成的角度小于或等于由排气表面和排气侧引导表面形成的角度。