公开(公告)号：US20030200846A1

公开(公告)日：2003-10-30

申请号：US10425917

申请日：2003-04-30

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Nobutaka Chiba ,  Toshikazu Nanbu ,  Makoto Kano ,  Jun Watanabe ,  Kenshi Ushijima ,  Masahiro Omata ,  Minoru Oota ,  Hiroo Ueda ,  Manabu Wakuda

IPC: B23B005/28

CPC classification number: F16H55/32 ,  F16H15/38 ,  F16H2055/325 ,  Y10T82/18 ,  Y10T82/2522

Abstract: A rotary assembly for traction drives, including a plurality of rolling elements having a rotation axis and traction contact surfaces around the rotation axis and associating with each other to transmit a motive power between the rolling elements via a traction oil film formed between the traction contact surfaces, in which at least one of the traction contact surfaces has a microstructure with irregularities which sizes are larger than a thickness of the traction oil film. The process for the traction contact surface is also disclosed.

公开(公告)号：US20030209213A1

公开(公告)日：2003-11-13

申请号：US10409093

申请日：2003-04-09

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Katsuya Moteki ,  Shunichi Aoyama ,  Kenshi Ushijima ,  Ryosuke Hiyoshi

IPC: F02B033/00

CPC classification number: F02B75/048 ,  F02B75/045

Abstract: A link mechanism of an engine includes: an upper link having a first end connected to a piston pin of a piston; a lower link connected to the upper link via an upper pin having a center, the lower link being connected to a crank pin of a crank shaft; a control shaft extending substantially in parallel with the crank shaft, the control shaft having a rotational center; and a control link including: a first end swingably connected to the control shaft, and a second end connected to the lower link. In a process of the center of the upper pin moving nearer to the axial line of the piston pin, the center of the control pin moves in the upward direction, thus inclining the lower link and allowing the center of the upper pin and the center of the piston pin to move in the downward direction.

Abstract translation: 发动机的连杆机构包括：上连杆，其具有连接到活塞的活塞销的第一端; 下连杆经由具有中心的上销连接到上连杆，下连杆连接到曲轴的曲柄销; 所述控制轴基本上平行于所述曲轴延伸，所述控制轴具有旋转中心; 以及控制连杆，包括：可摆动地连接到所述控制轴的第一端和连接到所述下部连杆的第二端。 在上销的中心更靠近活塞销的轴线的过程中，控制销的中心向上移动，从而使下连杆倾斜，并允许上销的中心和 活塞销向下移动。

公开(公告)号：US20030051685A1

公开(公告)日：2003-03-20

申请号：US10230066

申请日：2002-08-29

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Ryosuke Hiyoshi ,  Shunichi Aoyama ,  Kenshi Ushijima ,  Katsuya Moteki

IPC: F01L001/34

CPC classification number: F02D15/02 ,  F01L1/34 ,  F01L1/34406 ,  F01L13/0021 ,  F01L13/0026 ,  F01L2013/0073 ,  F02B75/048 ,  F02D13/0219 ,  F02D15/04 ,  F02D35/027 ,  F02D37/02 ,  F02D41/045 ,  F02D41/10 ,  F02D2041/001 ,  F02D2200/0411 ,  F02P5/152 ,  Y02T10/18

Abstract: A control system for an internal combustion engine is provided which comprises a compression ratio control mechanism and a control unit for controlling the compression ratio control mechanism. The control unit including an acceleration parameter obtaining section for obtaining an acceleration parameter corresponding to a change of an engine speed, an acceleration determining section for determining whether the engine is in a slow or fast acceleration state on the basis of the acceleration parameter, and a control section for controlling at least one of a compression ratio change speed at which the engine compression ratio during engine acceleration is changed and a compression ratio change start time at which a change of the engine compression ratio during engine acceleration is started, on the basis of whether the engine is in a slow or fast acceleration state. A control method is also provided.

公开(公告)号：US20040163614A1

公开(公告)日：2004-08-26

申请号：US10756470

申请日：2004-01-14

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Ryosuke Hiyoshi ,  Kenshi Ushijima ,  Yoshiteru Yasuda ,  Katsuya Moteki

IPC: F02B075/04

CPC classification number: F02B75/048 ,  F02B75/045

Abstract: A reciprocating engine with a variable compression ratio mechanism is disclosed. A lubrication system of the engine is improved by controlling an oil pressure according to a compression ratio setting. The lubrication system includes various combinations of control valves and oil passages. The oil relief passage is opened at a high compression ratio setting applied to a low engine load range and is otherwise closed at a low compression ratio setting applied to a high engine load range.

Abstract translation: 公开了一种具有可变压缩比机构的往复式发动机。 通过根据压缩比设定控制油压来提高发动机的润滑系统。 润滑系统包括控制阀和油通道的各种组合。 减压通道以高压缩比设置打开，施加到低发动机负载范围，否则以应用于高发动机负载范围的低压缩比设定关闭。

公开(公告)号：US20040112169A1

公开(公告)日：2004-06-17

申请号：US10662402

申请日：2003-09-16

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Ryosuke Hiyoshi ,  Kenshi Ushijima ,  Yoshiaki Tanaka ,  Shunichi Aoyama ,  Katsuya Moteki ,  Naoki Takahashi

IPC: G05G001/00

CPC classification number: F16H21/32 ,  F02B75/048 ,  F16C9/04 ,  Y10T74/2142

Abstract: A link mechanism usable for a variable compression ratio mechanism of an internal combustion engine includes first and second links pivotally connected by a pin inserted through cylindrical first and second pin boss portions of the first and second links. Each of the first and second pin boss portions includes a circumferentially extending first narrow section, and a circumferentially extending first wide section having an axial wall thickness greater than the axial wall thickness of the first narrow section. The wide sections of the first and second pin boss portions are overlapped in an region extending in the axial direction of the pin.

Abstract translation: 可用于内燃机的可变压缩比机构的连杆机构包括通过插入通过第一和第二连杆的圆柱形第一和第二销凸起部分的销枢转地连接的第一和第二连杆。 所述第一和第二销毂部分中的每一个包括周向延伸的第一窄部分，以及具有大于所述第一窄部分的轴向壁厚度的轴向壁厚的周向延伸的第一宽部分。 第一和第二销凸起部分的宽部分在沿销的轴向方向延伸的区域中重叠。

公开(公告)号：US20020148430A1

公开(公告)日：2002-10-17

申请号：US10058286

申请日：2002-01-30

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Makoto Kano ,  Yoshiteru Yasuda ,  Masahiro Omata ,  Tokio Sakane ,  Kenshi Ushijima

IPC: F02F001/00

CPC classification number: F02F1/20 ,  F02F1/10 ,  F16C29/02 ,  F16C33/1065

Abstract: A low friction sliding element for reciprocating engine parts, including a sliding contact surface that is in sliding contact with a counterpart during relative sliding motion of the sliding element and the counterpart. The sliding contact surface has microscopic recesses and plateaus interrupted by the recesses. The recesses have depths regularly varying in a sliding direction of the sliding element.

Abstract translation: 一种用于往复发动机部件的低摩擦滑动元件，包括滑动接触表面，滑动接触表面在滑动元件和对应物的相对滑动运动期间与配对件滑动接触。 滑动接触表面具有由凹部中断的微观凹槽和平台。 凹部具有在滑动元件的滑动方向上规则变化的深度。

公开(公告)号：US20020139324A1

公开(公告)日：2002-10-03

申请号：US10077944

申请日：2002-02-20

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Katsuya Moteki ,  Shunichi Aoyama ,  Kenshi Ushijima ,  Ryosuke Hiyoshi

IPC: F02B075/04

CPC classification number: F02B75/048 ,  F02B75/045

Abstract: In an internal combustion engine of variable compression ratio type, a piston control mechanism is employed which comprises a lower link rotatably disposed on a crank pin of a crankshaft of the engine, an upper link having one end pivotally connected to the lower link and the other end pivotally connected to a piston of the engine, a control link having one end pivotally connected to the lower link; and a position changing mechanism which changes a supporting axis about which the other end of the control link turns. When the piston comes up to a top dead center, a compression load is applied to the control link in an axial direction of the control link in accordance with an upward inertial load of the piston.

Abstract translation: 在可变压缩比型的内燃机中，采用活塞控制机构，该活塞控制机构包括可旋转地设置在发动机的曲轴的曲柄销上的下连杆，具有一端枢转地连接到下连杆的另一端的另一端 端部枢转地连接到发动机的活塞，控制连杆，其一端枢转地连接到下连杆; 以及位置改变机构，其改变控制连杆的另一端转动的支承轴。 当活塞达到上止点时，根据活塞的向上惯性载荷，在控制连杆的轴向方向上对控制连杆施加压缩载荷。

公开(公告)号：US20030128903A1

公开(公告)日：2003-07-10

申请号：US10290247

申请日：2002-11-08

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Yoshiteru Yasuda ,  Makato Kano ,  Yutaka Mabuchi ,  Shinji Asano ,  Kenshi Ushijima

IPC: F16C033/10

CPC classification number: F16C3/08 ,  F16C9/00 ,  F16C17/02 ,  F16C33/103 ,  F16C2240/40 ,  F16C2240/44 ,  F16C2360/22

Abstract: A sliding structure including first and second sliding elements made of metal and including first and second sliding surfaces relatively slidable via a lubricating oil film therebetween, in which at least one of the first and second sliding surfaces having a microscopic surface structure including a base portion, dimples inward recessed from the base portion and separated from one another, and a peripheral portion defining the opening area of each of the dimples and extending along a periphery of each of the dimples. A ratio of a sum of opening areas of the dimples to an area of the at least one of the first and second surfaces is in a range of 5% to 60%. The peripheral portion has a height smaller than a thickness of the lubricating oil film.

Abstract translation: 一种滑动结构，包括由金属制成的第一和第二滑动元件，并且包括通过其间的润滑油膜可相对滑动的第一和第二滑动表面，其中第一和第二滑动表面中的至少一个具有包括基部的微观表面结构， 凹坑从基部向内凹入并彼此分离，并且周边部分限定每个凹坑的开口区域并且沿着每个凹坑的周边延伸。 凹坑的开口面积的总和与第一和第二表面中的至少一个的面积的比率在5％至60％的范围内。 周边部分的高度小于润滑油膜的厚度。

公开(公告)号：US20030019448A1

公开(公告)日：2003-01-30

申请号：US10170683

申请日：2002-06-14

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Shunichi Aoyama ,  Katsuya Moteki ,  Kenshi Ushijima ,  Ryosuke Hiyoshi

IPC: F01L001/34 ,  F01L001/02

CPC classification number: F02F7/0019 ,  F01L1/024 ,  F01L1/34 ,  F01L13/0021 ,  F01L13/0026 ,  F01L2013/0073 ,  F02B75/048 ,  F02B2275/18 ,  F02F2001/245

Abstract: In a rockable-cam equipped reciprocating internal combustion engine, a rockable cam is rotatably fitted on the outer periphery of an intake-valve drive shaft that is rotatable in synchronism with rotation of a crankshaft. The rockable cam oscillates within predetermined limits during rotation of the intake-valve drive shaft so as to directly push an intake-valve lifter. As viewed from an axial direction of the crankshaft, an axis of the intake-valve drive shaft is offset from a centerline of the intake-valve stem in a first direction that is normal to both the cylinder centerline and the crankshaft axis and directed from the cylinder centerline to the intake valve side. The crankshaft axis is also offset from the cylinder centerline in the first direction.

Abstract translation: 在具有摆动凸轮的往复运动内燃机中，可旋转地安装在与曲轴转动同步的进气阀驱动轴的外周上的可摆动凸轮。 可旋转凸轮在进气阀驱动轴的旋转期间在预定限度内振荡，以便直接推动进气阀升降器。 从曲轴的轴向观察，进气阀驱动轴的轴线在与气缸中心线和曲轴轴线正交的第一方向偏离进气阀杆的中心线，并从 气缸中心线到进气阀侧。 曲轴轴线也沿着第一方向偏离气缸中心线。

公开(公告)号：US20020144665A1

公开(公告)日：2002-10-10

申请号：US10115893

申请日：2002-04-05

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Kenshi Ushijima ,  Shunichi Aoyama ,  Katsuya Moteki ,  Ryosuke Hiyoshi ,  Yoshiaki Tanaka

IPC: F02B075/04

CPC classification number: F02B75/048 ,  F02B75/045

Abstract: In a variable compression ratio mechanism for an internal combustion engine employing an upper link, a lower link, and a control link, the lower link includes a crankpin bearing portion into which a crankpin is fitted, a first connecting-pin bearing portion into which a first connecting pin for the upper link is fitted, and a second connecting-pin bearing portion into which a second connecting pin for the control link is fitted. A central connecting portion is provided to connect an axial central portion of at least one of the first and second connecting-pin bearing portions to an axial central portion of the crankpin bearing portion. The central connecting portion has an axial length L1 shorter than each of an axial length L2 of the crankpin bearing portion, an axial length L3 of the first connecting-pin bearing portion, and an axial length L4 of the second connecting-pin bearing portion.

Abstract translation: 在用于使用上连杆，下连杆和控制连杆的内燃机的可变压缩比机构中，下连杆包括曲柄销轴承部分，曲柄销装配到该曲轴销轴承部分中，第一连接销轴承部分 第一连接销用于上连杆，第二连接销轴承部分安装有用于控制连杆的第二连接销。 中心连接部分设置成将第一和第二连接销轴承部分中的至少一个的轴向中心部分连接到曲柄销轴承部分的轴向中心部分。 中心连接部分的轴向长度L1短于曲柄销轴承部分的轴向长度L2，第一连接销轴承部分的轴向长度L3和第二连接销轴承部分的轴向长度L4。