公开(公告)号：US06513469B2

公开(公告)日：2003-02-04

申请号：US10093512

申请日：2002-03-11

申请人： Makoto Nakamura ,  Naoki Okamoto ,  Shinichi Takemura

发明人： Makoto Nakamura ,  Naoki Okamoto ,  Shinichi Takemura

IPC分类号： F01L134

CPC分类号： F01L13/0063 ,  F01L1/143 ,  F01L1/34 ,  F01L1/34406 ,  F01L13/0021 ,  F01L13/0026 ,  F01L2013/0073 ,  F01L2800/00 ,  F01L2800/05 ,  F02D41/221 ,  Y02T10/40

摘要： A variable valve operating system of an internal combustion engine includes a first variable mechanism capable of variably controlling a lift characteristic of an intake valve, and a second variable mechanism capable of variably controlling a valve-open and/or valve-close timing characteristic of the intake valve. A position detector detects current actual positions of the first and second variable mechanisms. A controller responds to a detected failure position of one of the first or second variable mechanisms by controlling movement of the other of the variable mechanisms within a predetermined range that avoids interference between the engine valve and a piston and between the intake and exhaust valves when the one variable mechanism fails.

摘要翻译： 内燃机的可变气门操作系统包括能够可变地控制进气门的升程特性的第一可变机构和能够可变地控制进气门的开阀和/或闭阀正时特性的第二可变机构 进气阀。 位置检测器检测第一和第二可变机构的当前实际位置。 控制器通过控制另一个可变机构在预定范围内的运动来响应于检测到的第一或第二可变机构中的一个的故障位置，该预定范围避免了当发动机气门和活塞之间以及进气门和排气门之间的干扰时 一个可变机制失败。

公开(公告)号：US6029618A

公开(公告)日：2000-02-29

申请号：US179420

申请日：1998-10-27

申请人： Seinosuke Hara ,  Makoto Nakamura ,  Shinichi Takemura

发明人： Seinosuke Hara ,  Makoto Nakamura ,  Shinichi Takemura

IPC分类号： F01L13/00

CPC分类号： F01L13/0026 ,  F01L13/0021

摘要： A variable valve actuation (VVA) apparatus is disclosed. The VVA apparatus can keep an engine cylinder valve closed. Rotating a camshaft in timed relation with a crankshaft of the engine causes an eccentric crank cam to move a link or crank arm, thereby causing one end of a rocker arm to reciprocate. This causes the other end of the rocker arm to reciprocate. The reciprocating motion of the other end of the rocker arm is transmitted via a link to a valve operating (VO) cam, thereby causing the VO cam to pivot to push a valve lifter for opening the associated cylinder valve. An eccentric circular cam, fixed to a control rod, supports the rocker arm for rotation relative thereto in such a manner that rotation of the control rod causes a pivot center of the rocker arm to move, thereby changing position of the VO cam relative to the valve lifter. The change in the position of the VO cam causes its valve lift diagram to change. The VO cam has a base circle portion that extends over a predetermined angle with respect to the center of pivot of the VO cam and the contiguous ramp portion. A predetermined valve clearance exists between the VO cam and the valve lifter when the base circle portion faces the valve lifter. When it is desired to keep the associated cylinder valve closed, the control rod is rotated to establish a state wherein the VO cam pivots to bring not only base circle but also the ramp portions into facing relation with the valve lifter. In this state, the maximum cam lift of a cam lift diagram is greater than zero and less than the valve clearance.

摘要翻译： 公开了一种可变气门致动（VVA）装置。 VVA装置可以使发动机气缸阀关闭。 以与发动机的曲轴成正时关系的凸轮轴旋转，使得偏心曲柄凸轮移动连杆或曲柄臂，从而使摇臂的一端往复运动。 这使得摇臂的另一端往复运动。 摇臂另一端的往复运动通过连杆传递到阀门操作（VO）凸轮，从而使得VO凸轮枢转以推动用于打开相关气缸阀的气门挺杆。 固定到控制杆上的偏心圆形凸轮以相对于其旋转的方式支撑摇臂，使得控制杆的旋转导致摇臂的枢转中心移动，从而改变了VO凸轮相对于 气门挺杆 VO凸轮位置的变化会导致阀升程图发生变化。 VO凸轮具有相对于VO凸轮的枢轴中心和相邻的斜坡部分延伸预定角度的基圆部分。 当基座部分面向气门挺杆时，在VO凸轮和气门挺杆之间存在预定的阀间隙。 当希望保持关联的气缸阀关闭时，控制杆旋转以建立其中VO凸轮枢转的状态，不仅带来基圆，而且使斜面部分与阀提升器成面对关系。 在这种状态下，凸轮提升图的最大凸轮升程大于零并小于阀间隙。

公开(公告)号：US5913292A

公开(公告)日：1999-06-22

申请号：US64820

申请日：1998-04-23

申请人： Shinichi Takemura ,  Makoto Nakamura ,  Akira Hidaka

发明人： Shinichi Takemura ,  Makoto Nakamura ,  Akira Hidaka

IPC分类号： F01L1/04 ,  F01L1/356 ,  F01L13/00

CPC分类号： F01L1/356 ,  F01L2001/0475 ,  F01L2001/0476

摘要： A drive shaft is synchronously driven by an internal combustion engine. A cylindrical hollow cam shaft is rotatably disposed about the drive shaft. The cam shaft has thereon a cam which actuates a valve of the engine. A first flange is formed on one end of the cam shaft. A second flange is connected to the drive shaft to rotate therewith. The second flange faces the first flange. First and second radially extending grooves are formed in mutually facing surfaces of the first and second flanges respectively. The first and second grooves are arranged at opposite sides with respect to an axis of the drive shaft. An annular disc is disposed between the first and second flanges. The annular disc has first and second pins which are slidably engaged with the first and second grooves respectively. A control housing rotatably receives therein the annular disc. The control housing is pivotal in a direction perpendicular to an axis of the drive shaft and has therein a cam receiving circular opening. A control shaft has thereon a circular eccentric cam which is slidably received in the cam receiving circular opening of the control housing. A pair of annular flanges are provided on the control shaft to intimately put therebetween a thicker portion of the control housing thereby to suppress an undesired axial displacement of the control housing on and along the control shaft.

摘要翻译： 驱动轴由内燃机同步驱动。 圆筒形空心凸轮轴围绕驱动轴可旋转地设置。 凸轮轴上具有致动发动机的阀的凸轮。 第一凸缘形成在凸轮轴的一端。 第二凸缘连接到驱动轴以与其一起旋转。 第二凸缘面向第一凸缘。 第一和第二径向延伸的槽分别形成在第一和第二凸缘的相互面对的表面中。 第一和第二槽相对于驱动轴的轴线布置在相对侧。 环形盘设置在第一和第二凸缘之间。 环形盘具有分别与第一和第二槽可滑动地接合的第一和第二销。 控制壳体可旋转地容纳环形盘。 控制壳体在垂直于驱动轴的轴线的方向上枢转，并且在其中具有接收圆形开口的凸轮。 控制轴上有一个圆形的偏心凸轮，它可滑动地容纳在控制壳体的凸轮接收圆形开口中。 一对环形凸缘设置在控制轴上，以紧密地放置在控制壳体的较厚部分之间，从而抑制控制壳体在控制轴上和沿控制轴的不期望的轴向位移。

公开(公告)号：US5679094A

公开(公告)日：1997-10-21

申请号：US576359

申请日：1995-12-21

申请人： Makoto Nakamura ,  Shinichi Takemura ,  Teturo Goto

发明人： Makoto Nakamura ,  Shinichi Takemura ,  Teturo Goto

IPC分类号： F01L13/00 ,  F01L1/356 ,  F02D13/02 ,  F02D29/00 ,  F02D29/02 ,  F02D45/00 ,  F16H61/04 ,  B60K41/10

CPC分类号： F02D13/0215 ,  F01L1/356 ,  F02D13/0261 ,  F02D29/02 ,  B60W2510/0638 ,  F16H63/502 ,  Y02T10/18 ,  Y10T477/679 ,  Y10T477/68

摘要： A cylinder valve control stem for a vehicle drivetrain including a transmission and an engine having a variable valve control mechanism which can vary valve lift diagram in response to a control signal. A controller develops the control signal in response to varying operating condition of the engine. The controller derives, upon initiation of a shift in the transmission, engine speed to be established after completion of the shift and corrects the control signal such that the variable valve control mechanism provides one of various valve lift diagrams whose predetermined value in engine speed is not exceeded by the derived engine speed.

摘要翻译： 一种用于车辆传动系统的气缸阀控制杆，包括变速器和具有可变气门控制机构的发动机，其可以响应于控制信号而改变气门升程曲线。 控制器响应于发动机的变化的操作条件开发控制信号。 控制器在变速器转换开始时引起发动机转速，在变速完成之后要建立，并且校正控制信号，使得可变气门控制机构提供各种气门升程图之一，其中发动机转速的预定值不是 超过了派生的发动机转速。

公开(公告)号：US06550437B2

公开(公告)日：2003-04-22

申请号：US10072910

申请日：2002-02-12

申请人： Makoto Nakamura ,  Shinichi Takemura

发明人： Makoto Nakamura ,  Shinichi Takemura

IPC分类号： F01L1300

CPC分类号： F01L13/0021 ,  F01L2013/0073

摘要： A VVA apparatus for an internal combustion engine includes a intake valve, and an alteration mechanism which variably controlling lift characteristics of the intake valve in accordance with the engine operating conditions, wherein the valve lift characteristics include a ramp period which is shorter in the range of medium lift amount than in the range of small lift amount and the range of large lift amount.

公开(公告)号：US06401675B1

公开(公告)日：2002-06-11

申请号：US09647660

申请日：2000-10-04

申请人： Makoto Nakamura ,  Naoki Okamoto ,  Shinichi Takemura

发明人： Makoto Nakamura ,  Naoki Okamoto ,  Shinichi Takemura

IPC分类号： F01L134

CPC分类号： F01L13/0063 ,  F01L1/143 ,  F01L1/34 ,  F01L1/34406 ,  F01L13/0021 ,  F01L13/0026 ,  F01L2013/0073 ,  F01L2800/00 ,  F01L2800/05 ,  F02D41/221 ,  Y02T10/40

摘要： A variable valve operating system of an internal combustion engine comprises a first variable mechanism 1 capable of variably controlling a lift characteristic of an intake valve 12, and a second variable mechanism 2 capable of variably controlling a valve-open and/or valve-close timing characteristic of the intake valve. The first variable mechanism varies an oscillating position of an oscillating cam 17 via a transmission mechanism 18 by controlling a rotational position of a control shaft 32 by an electric motor 34. On the other hand, the second variable mechanism is constructed to change a phase by axially moving a ring gear 43 by way of hydraulic-pressure supply or release to and from first and second hydraulic pressure chambers 49 and 50 so as to produce relative rotation between a timing sprocket 40 and a drive shaft 13. At the initial state of engine starting, the system operates to drive only the first variable mechanism. Therefore, by using an energy source for the first variable mechanism separated from an energy source for the second variable mechanism, in presence of a failure in one variable mechanism, it is possible to prevent the engine performance from lowering, and also to enhance the engine startability.

摘要翻译： 内燃机的可变气门操作系统包括能够可变地控制进气门12的升程特性的第一可变机构1和能够可变地控制阀打开和/或闭阀定时的第二可变机构2 进气门特性。 第一可变机构通过由电动机34控制控制轴32的旋转位置，通过变速机构18来改变摆动凸轮17的摆动位置。另一方面，第二可变机构构造成通过 通过对第一和第二液压室49和50的液压供应或释放来轴向移动环形齿轮43，以便在正时链轮40和驱动轴13之间产生相对旋转。在发动机的初始状态 启动时，系统只能驱动第一个可变机制。 因此，通过使用与用于第二可变机构的能量源分离的第一可变机构的能量源，在存在一个可变机构的故障的情况下，可以防止发动机性能下降，并且还可以增强发动机 可启动性。

公开(公告)号：US06260523B1

公开(公告)日：2001-07-17

申请号：US09498031

申请日：2000-02-04

申请人： Makoto Nakamura ,  Shinichi Takemura ,  Yoshiaki Miyazato ,  Yoshihiko Yamada ,  Tsuneyasu Nohara ,  Tsutomu Hibi

发明人： Makoto Nakamura ,  Shinichi Takemura ,  Yoshiaki Miyazato ,  Yoshihiko Yamada ,  Tsuneyasu Nohara ,  Tsutomu Hibi

IPC分类号： F01L134

CPC分类号： F01L13/0026 ,  F01L13/0021

摘要： In a VVA apparatus for an internal combustion engine wherein the position of contact of a cam face of a VO cam with respect to the top face of a valve lifter is changed in accordance with a change in a rocking fulcrum of a rocker arm to alter the valve lift, the maximum valve lift is obtained in a first rotated position of a control shaft where an axis of a control cam is adjacent to a driving shaft. The minimum valve lift is obtained in a second rotated position of the control shaft where the axis of the control cam is positioned near a first pivotal point of the rocker arm and a crank arm with respect to a first line connecting the axis of the control shaft and the axis of the control cam upon the maximum valve lift.

摘要翻译： 在用于内燃机的VVA装置中，根据摇臂的摆动支点的变化，改变VO凸轮的凸轮面相对于气门挺杆的顶面的接触位置，以改变 气门升程，在控制轴的轴线与驱动轴相邻的控制轴的第一旋转位置获得最大气门升程。 在控制轴的第二旋转位置中获得最小气门升程，其中控制凸轮的轴线位于摇臂的第一枢转点附近，而曲柄臂相对于连接控制轴的轴线的第一线 和最大气门升程时控制凸轮的轴线。

公开(公告)号：US5988125A

公开(公告)日：1999-11-23

申请号：US130490

申请日：1998-08-07

申请人： Seinosuke Hara ,  Yoshihiko Yamada ,  Keisuke Takeda ,  Tsutomu Hibi ,  Akira Ohnuki ,  Shunichi Aoyama ,  Makoto Nakamura ,  Shinichi Takemura ,  Tetsuro Goto ,  Katsuya Moteki ,  Tsuneyasu Nohara

发明人： Seinosuke Hara ,  Yoshihiko Yamada ,  Keisuke Takeda ,  Tsutomu Hibi ,  Akira Ohnuki ,  Shunichi Aoyama ,  Makoto Nakamura ,  Shinichi Takemura ,  Tetsuro Goto ,  Katsuya Moteki ,  Tsuneyasu Nohara

IPC分类号： F01L1/34 ,  F01L13/00

CPC分类号： F01L1/34 ,  F01L2013/0073

摘要： A variable valve actuation (VVA) apparatus comprises an eccentric rotary (ER) cam fixed to a driving shaft for rotation therewith, a pivotal valve operating (VO) cam, a rocker arm having a first arm and a second arm, a control rod having an eccentric control cam, and a crank arm. The eccentric control cam supports the rocker arm for pivotal motion. The crank arm interconnects the ER cam and the first arm of the rocker arm. A link interconnects the second arm of the rocker arm and the VO cam.

摘要翻译： 可变气门致动（VVA）装置包括固定到驱动轴以与其一起旋转的偏心旋转（ER）凸轮，枢转阀操作（VO）凸轮，具有第一臂和第二臂的摇臂，具有 偏心控制凸轮和曲柄臂。 偏心控制凸轮支撑摇臂作枢轴运动。 曲柄臂将ER凸轮和摇臂的第一臂相互连接。 链路将摇臂的第二臂和VO凸轮相互连接。

公开(公告)号：US5636603A

公开(公告)日：1997-06-10

申请号：US621918

申请日：1996-03-26

申请人： Makoto Nakamura ,  Shinichi Takemura ,  Akira Hidaka

发明人： Makoto Nakamura ,  Shinichi Takemura ,  Akira Hidaka

IPC分类号： F01L1/356 ,  F01L1/46 ,  F01L3/24 ,  F01L13/00

CPC分类号： F01L1/46 ,  F01L1/356

摘要： In an apparatus for detecting a valve lifting characteristic of a cam shaft assembly for use in a multi-cylinder internal combustion engine with a cylinder head to control opening and closure of cylinder valves, a sensor which is so arranged and constructed as to detect the valve lifting characteristic of the cam shaft assembly is disposed on an end of at least one of either a first eccentric control cam or a second eccentric control cam, both of the first and second eccentric cams being rotatably coupled with an intermediate member supported by a support so as to vary an eccentricity of the intermediate member to a shaft axis of a driven shaft according to a rotation position of the first eccentric control cam, the first and second eccentric control cam, the intermediate member, the support, and the driven shaft constituting the cam shaft assembly. In an embodiment, a potentiometer is attached onto an end of a control rod integrally formed with the first eccentric control cam, the other end of the control rod being attached with a hydraulic actuator to rotate the control rod according to an engine driving condition.

摘要翻译： 在用于检测用于具有气缸盖的气缸盖的多气缸内燃机中用于控制气缸阀的打开和关闭的凸轮轴组件的气门提升特性的装置中，设置和构造为检测阀 凸轮轴组件的提升特性设置在第一偏心控制凸轮或第二偏心控制凸轮中的至少一个的端部上，第一偏心凸轮和第二偏心凸轮都与由支撑件支撑的中间构件可旋转地联接， 为了根据第一偏心控制凸轮的旋转位置来改变中间构件与从动轴的轴线的偏心率，第一和第二偏心控制凸轮，中间构件，支撑件和从动轴构成 凸轮轴总成。 在一个实施例中，电位器附接到与第一偏心控制凸轮一体形成的控制杆的端部上，控制杆的另一端附有液压致动器，以根据发动机驱动条件旋转控制杆。

公开(公告)号：US5622144A

公开(公告)日：1997-04-22

申请号：US432852

申请日：1995-05-02

申请人： Makoto Nakamura ,  Tetsuro Goto ,  Shinichi Takemura

发明人： Makoto Nakamura ,  Tetsuro Goto ,  Shinichi Takemura

IPC分类号： F01L1/34 ,  F01L1/344 ,  F01L1/356 ,  F01L13/00 ,  F02D13/02

CPC分类号： F02D13/0215 ,  F01L1/34406 ,  F01L1/356 ,  F02D13/0249 ,  F02D13/0261 ,  F01L2201/00 ,  F02B2275/18 ,  F02D2041/001 ,  Y02T10/18

摘要： A system for operating an internal combustion engine including an intake valve and an exhaust valve, the system including an exhaust valve gear for the exhaust valve which incorporates an exhaust variable valve timing mechanism. The system also includes an intake valve gear for the intake valve which incorporates an intake variable valve timing mechanism. A control unit operates responsive to a low-speed/low-load operating range of the engine and a low-speed/high-load operating range of the engine to condition the exhaust variable valve timing mechanism for providing advanced opening and closing timings of the exhaust valve to cause a reduced valve overlap between the intake and exhaust valves, and at the same time condition the intake variable valve timing mechanism for decreasing an opening duration of the intake valve to provide a retarded opening timing thereof after a top dead center and an advanced closing timing thereof. The control unit operates responsive to a low-speed/medium-load operating range of the engine to condition the exhaust variable valve timing mechanism for providing retarded opening and closing timings of the exhaust valve to cause an increased valve overlap between the intake and exhaust valves, and at the same time condition the intake variable valve timing mechanism for increasing the opening duration of the intake valve to provide an advanced opening timing thereof before the top dead center and a retarded closing timing thereof.

摘要翻译： 一种用于操作包括进气门和排气门的内燃机的系统，该系统包括排气门的排气门齿轮，其包括排气可变气门正时机构。 该系统还包括用于进气门的进气阀齿轮，其包括进气可变气门正时机构。 控制单元响应于发动机的低速/低负载运行范围和发动机的低速/高负载运行范围而运行，以调节排气可变气门正时机构，以提供先进的开启和关闭定时 排气阀，导致进气门和排气门之间的阀重叠减少，同时条件使得进气阀正时机构能够减小进气门的打开持续时间，从而在上止点和 其高级关闭时机。 控制单元响应于发动机的低速/中负载操作范围而操作以调节排气可变气门正时机构，以提供排气门的延迟打开和关闭定时，从而在进气门和排气门之间增加阀重叠 并且同时调节用于增加进气门的打开持续时间的进气可变气门正时机构，以在上止点之前提供其高级打开时机及其延迟关闭时机。