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1. 发明专利

JP2010133421A Variable valve gear for internal combustion engine 有权
标题翻译：用于内燃机的变速阀齿轮
公开(公告)号：JP2010133421A
公开(公告)日：2010-06-17
申请号：JP2010020438
申请日：2010-02-01
申请人： Hitachi Automotive Systems Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 日立オートモティブシステムズ株式会社
发明人： AOYAMA SHUNICHI , NOHARA TSUNEYASU , HARA SEINOSUKE
IPC分类号： F01L13/00 , F01L1/34
摘要： PROBLEM TO BE SOLVED: To surely prevent interference of an intake valve and a piston in a control failure.
SOLUTION: When an operation angle control shaft 12 is rotated, an operation angle change mechanism 10 operates and an operation angle of the intake valve 1 is changed. When a phase control slider 43 is slid, a phase change mechanism 20 operates and a center phase of operation angle of the intake valve 1 is changed. When the operation angle is large, a slide range of a stopper 41 forming a part of the phase control slider 43 is limited by an arm 42 fixed or integrally formed on the operation angle control shaft 12, and advancement of the center phase is regulated. When the degree of advancement of the center phase is large, a rotation range of the arm 42 is limited by the stopper 41, and expansion of the operation angle is regulated.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：确保防止进气阀和活塞在控制故障中的干扰。解决方案：当操作角度控制轴12旋转时，操作角度改变机构10操作并且进气门1的操作角度改变。当相位控制滑块43滑动时，相变机构20动作，进气门1的运转角度的中心相变。当操作角度大时，形成相位控制滑块43的一部分的挡块41的滑动范围被固定或一体地形成在操作角控制轴12上的臂42限制，并且中心相的前进被调节。当中心相的前进程度大时，臂42的旋转范围受到止动件41的限制，并且限制了操作角度的膨胀。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2007009927A Variable valve gear for internal combustion engine 有权
标题翻译：用于内燃机的变速阀齿轮
公开(公告)号：JP2007009927A
公开(公告)日：2007-01-18
申请号：JP2006287371
申请日：2006-10-23
申请人： Hitachi Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社日立製作所
发明人： HARA SEINOSUKE , NAKAMURA MAKOTO , TAKEMURA SHINICHI
IPC分类号： F01L13/00 , F02D13/02
CPC分类号： Y02T10/18
摘要： PROBLEM TO BE SOLVED: To miniaturize a variable valve gear while maintaining a valve closed condition in the minimum lift condition and improving fuel economy performance effectively. SOLUTION: When a cam shaft 13 rotates in synchronization with a crank shaft, an oscillating cam 20 oscillates through an eccentric cam 15, a link arm 25, a rocker arm 18, and a link member 26 to open, close, and operate an intake valve 12. When a control shaft 16 rotates, a turning position of the oscillating cam 20 is relatively changed through the rocker arm 18 and cam lift characteristic is changed. A predetermined valve clearance is set between the oscillating cam 20 and the intake valve 12 in a base circle section θ1. In the minimum lift condition in which amount of cam lift of the oscillating cam 20 becomes the minimum, the maximum amount of cam lift of the oscillating cam 20 is set to be larger than 0 and smaller than the valve clearance. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：使可变气门齿轮小型化，同时在最小提升条件下保持阀门关闭状态，并有效提高燃油经济性。解决方案：当凸轮轴13与曲轴同步旋转时，摆动凸轮20通过偏心凸轮15，连杆臂25，摇臂18和连杆构件26摆动以打开，关闭和操作进气阀12.当控制轴16旋转时，摆动凸轮20的转动位置通过摇臂18相对地变化，凸轮升程特性改变。在圆弧部θ1中，在摆动凸轮20与进气门12之间设定规定的阀间隙。在摆动凸轮20的凸轮升程量变得最小的最小提升条件下，摆动凸轮20的最大凸轮升程量设定为大于0且小于阀间隙。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2000337114A VALVE SYSTEM OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000337114A
公开(公告)日：2000-12-05
申请号：JP14258099
申请日：1999-05-24
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： NAKAMURA MAKOTO , HARA SEINOSUKE , YAMADA YOSHIHIKO , TAKEDA KEISUKE , GOTO TETSUAKI
IPC分类号： F01L1/18 , F01L13/00
摘要： PROBLEM TO BE SOLVED: To suppress the generation of collision strike noise with the excessive load of each slide part being reduced through the decrease of inertia torque by reducing inertia mass of an oscillajion cam. SOLUTION: A drive cam 15 fixed on a drive shaft 13 and an oscillation cam 17 oscillatively supported on the drive shaft 13 are brought into a mechanically interlinking state through a transmission mechanism. By performing oscillation slide of the cam surface 22 of the oscillating cam 17 over the upper surface of a valve lifter, a suction valve 12 is caused to perform opening and closing operation. In a so formed valve system, the pin hole 21a of a coupling pin 28 is formed through in the cam nose part 21 of the oscillation cam 17 and in a position sufficiently approaching the cam surface 22 and a notch is formed in the upper end part of the oscillation cam to reduce mass.

4. 发明专利

JPH11247636A VARIABLE VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11247636A
公开(公告)日：1999-09-14
申请号：JP5161298
申请日：1998-03-04
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： HARA SEINOSUKE , NAKAMURA MAKOTO , YAMADA YOSHIHIKO , TAKEDA KEISUKE , TAKEMURA SHINICHI
IPC分类号： F01L13/00
摘要： PROBLEM TO BE SOLVED: To provide a device having good on board property on an engine by suppressing the lateral and vertical sizes of the device so as to form the whole device in a compact size while variably controlling valve timing and valve lift. SOLUTION: A rocker arm 18 is freely swingably supported on the periphery of a driving cam 15 fixed on a driving shaft 13 through the fitting hole 23 of a center part 18a, and also a rocking cam 17 is swung by the rocking motion of the rocker arm 18 through a link member 20, thereby an intake valve 12 is operated in opening/closing. The rocking fulcrum of the rocker arm 18 to the driving cam 15 is controlled by a variable mechanism 24, thereby the abutting position of the rocking cam 17 to the top face of a valve lifter is changed so as to vary the valve lift of the intake valve 12.

5. 发明专利

JPH11141321A VARIABLE VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11141321A
公开(公告)日：1999-05-25
申请号：JP30512097
申请日：1997-11-07
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： HARA SEINOSUKE , NAKAMURA MAKOTO , TAKEMURA SHINICHI
IPC分类号： F01L13/00
摘要： PROBLEM TO BE SOLVED: To keep a valve closing state in a minimum cam lifting rate, effectively improve fuel consumption performance, and downsize a device. SOLUTION: When a cam shaft 13 is synchronously rotated with a crank shaft, an oscillation cam 20 is oscillated through an eccentric cam 15, a link arm 25, a rocker arm 18, and link member 26, for opening and closing an intake valve 12. When a control shaft 16 is rotated, the rotational position of the oscillation cam 20 is relatively shifted through the rocker arm 18, for varying a cam lifting characteristic. A specified valve clearance is set between the oscillation cam 20 and the intake valve 12 in a base circle period θ1. The maximum cam lifting amount of the oscillation cam 20 is set larger than zero and smaller than the valve clearance in the minimum state of a cam lifting amount of the oscillation cam 20.

6. 发明专利

JPH1122433A INTAKE EXHAUST VALVE DRIVING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH1122433A
公开(公告)日：1999-01-26
申请号：JP17374397
申请日：1997-06-30
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： HARA SEINOSUKE , TOFUJI TAMOTSU , KAWADA SHINICHI , HAYASHI SHOJI , NAKAMURA MAKOTO
IPC分类号： F01L1/04 , F01L13/00
摘要： PROBLEM TO BE SOLVED: To improve a mounting property of a device on an engine by miniaturizing the device and to improve control precision of valve timing. SOLUTION: This control device interposes a disc housing 39 and a ring disc 38 supported free to rotate through a needle bearing 30 on an inner periphery of the disc housing 39 between first and second flange parts 33 provided facing against a drive shaft and a camshaft. A working angle of a valve is changed by eccentrically moving the ring disc 38 against a shaft center of the drive shaft by vertically moving the disc housing 39. A pair of left and right projected parts 44 is projectively provided on one end surface 39b of the disc housing 39, a support ring 40 is provided free to rotate on an outer peripheral surface 33b of the second flange part, the projected parts 44 are fitted on both outside surfaces 40a, 40a of this support ring, and the disc housing 39 is supported on the second flange part 33 free to vertically move.

7. 发明专利

JPH1113501A INTAKE AND EXHAUST VALUE CONTROLLER FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD THEREOF 失效
公开(公告)号：JPH1113501A
公开(公告)日：1999-01-19
申请号：JP16645297
申请日：1997-06-24
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： NAKAMURA MAKOTO , HARA SEINOSUKE
IPC分类号： F01L1/04 , F01L13/00 , F02D13/02
摘要： PROBLEM TO BE SOLVED: To ensure the performance of an engine on noise and output to the maximum by variably-controlling valve lift characteristics so that downside ramp speed may be relatively low in the low-speed and low-load range and may be relatively high in a high-load range or a high-speed range. SOLUTION: When a control shaft 26 involving an eccentric cam 29 rotates, a control housing 18 oscillates vertically, so that the center of an annular disc becomes eccentric from the center of a driving shaft 1 and a cam shaft 11. For a cam, the section of an upside ramp part at a lifting start part in valve lift characteristics is set so as to be longer under a concentric condition and relatively shorter under an eccentric condition, and ramp speed is set so as to be lower under a concentric condition and relatively higher under an eccentric condition. The section of a downside ramp part at a lifting finish part in valve lift characteristics is set so as to be shorter under a concentric condition and relatively longer under an eccentric condition, and ramp speed is set to as to be higher under a concentric condition and relatively lower under an eccentric condition. By decreasing upside ramp speed in a low-speed range, for example, it is possible to restrain variation at the time of valve opening.

8. 发明专利

JPH10339121A INTAKE/EXHAUST VALVE DRIVE CONTROLLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10339121A
公开(公告)日：1998-12-22
申请号：JP14613197
申请日：1997-06-04
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： HARA SEINOSUKE , HIDAKA AKIRA , YAMADA YOSHIHIKO , NAKAMURA MAKOTO
IPC分类号： F01L1/04 , F01L13/00
摘要： PROBLEM TO BE SOLVED: To improve manufacturing work efficiency and reduce cost by eliminating a support shaft in a disc housing to decrease the number of parts, and reduce load of a drive mechanism and improve valve timing control precision by reducing friction resistance at each slide part. SOLUTION: Between a first and a second flange parts 31, 33 provided to face a drive shaft 21 and a cam shaft 22, a disc housing 38 and a circular disc 39 rotatably supported on an inner circumference of the disc housing 38 through an eccentric cam ring 38a are provided to freely oscillate. A center Y of the circular disc 39 is eccentrically moved to an axial center X of the drive shaft 21 through a disc housing 48, so an actuation angle of a valve is changed. The disc housing 38 is rotatably supported to outer circumferential surfaces of both flange parts 31, 33 at both end parts by needle bearings 41, 42.

9. 发明专利

JPH10299438A INTAKE AND EXHAUST VALVE DRIVE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10299438A
公开(公告)日：1998-11-10
申请号：JP10688397
申请日：1997-04-24
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： NOHARA TSUNEYASU , HARA SEINOSUKE
IPC分类号： F01L1/04 , F01L13/00
摘要： PROBLEM TO BE SOLVED: To suppress the occurrence of unevenness in an eccentric amount of an annular disc due to machining precision of a cylinder head and uniformly ensure valve lift characteristics. SOLUTION: Cylindrical camshafts into which division is effected at respective cylinders are disposed on the outer periphery of a drive shaft 1 rotated synchronously with an engine and a cam shaft effects unequal speed rotation according to the eccentric position of an annular disc 17 interlocking the two members. The annular disc 17 is fitted in a control housing 18 and rotatably held. The control housing 18 is oscillatorily supported on the support shaft 29 of the support housing 26 and performs eccentric operation by the eccentric cam 36 of the control cam 36. Since the support housing 26 is rotatably held by the camshaft, the two housings 18 and 26 are relatively oscillatorily by the eccentric cam 36 and an eccentric amount is controlled with high precision.

10. 发明专利

JPH0861029A VALVE SYSTEM FOR ENGINE 失效
公开(公告)号：JPH0861029A
公开(公告)日：1996-03-05
申请号：JP19043494
申请日：1994-08-12
申请人： UNISIA JECS CORP , NISSAN MOTOR
发明人： MURAKAMI HISASHI , SAWADA TAKANORI , YAMAKAWA YUKIO , MORITA SHOJI , HARA SEINOSUKE , NAKAMURA MAKOTO , TAKEMURA SHINICHI
IPC分类号： F01L1/12 , F01L1/26 , F01L13/00
摘要： PURPOSE: To eliminate the need for accurate machining, reduce cost and inertia moment, provide a stable lift operation at low speeds, and make compact the overall size. CONSTITUTION: A valve gear device for engine is provided with a first rocker arm 1 oscillated by a first cam 10, a second rocker arm 5 oscillated by a second cam 9 co-axial with the first cam and supported on the first rocker arm through a supporting shaft 6, and a rotating switchover means 11 which is supported rotatably on the first rocker arm and can switch over between the connection and disconnection of the second rocker arm to and from the first rocker arm. Thus at least either of the oscillating top end face 5B of the second rocker arm and the face 11C of the rotating switchover means opposed to that face is fanned in arc shape with the axis of the supporting shaft 6 taken as its center, and a minute clearance is provided in it.

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