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公开(公告)号:JPS63297708A
公开(公告)日:1988-12-05
申请号:JP13413787
申请日:1987-05-29
Applicant: HONDA MOTOR CO LTD
Inventor: SHINODA AKIHISA , ARAKI MASABUMI
Abstract: PURPOSE:To eliminate a traditional valve gear cam shaft and reduce the number of parts by transmitting the rotation of a crankshaft to intake and exhaust valves through a transmitting means after reducing it to 1/2 with a reduction gear consisting of respective eccentric drive and driven cams. CONSTITUTION:A crankshaft 7 journalled rotatably by an engine body E is provided with a reduction gear R consisting of an eccentric drive cam 38 driven by the crankshaft 7 and an eccentric driven cam 39 driven by said cam 38 with 1/2 of reduction gear ratio. Also, said cam 39 is formed on the outer periphery with a valve gear cam 40 which is connected to a pair of cam followers 17 while each one end of a pair of parallel bushing rods 19, 20 is connected to each cam follower 17. Further, the other ends of respective bushing rods 19, 20 are connected to a pair of rocker arms 23, 24 for driving intake and exhaust valves 29 30 respectively. And the intake and exhaust valves 29, 30 are opened and closed in a predetermined timing through the reduction gear R by the rotation of crankshaft 7.
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公开(公告)号:JPS62191605A
公开(公告)日:1987-08-22
申请号:JP3253986
申请日:1986-02-17
Applicant: KAWASAKI HEAVY IND LTD
Inventor: FUJIKAWA TETSUZO , HIRATA MAKIZO , TANBA SHINICHI
Abstract: PURPOSE:To simplify machining of guide parts by forming the guide parts as different bodies from crank shaft in the case of switching a valve through an interlocking mechanism by means of the guide parts mounted on the outer periphery of output shaft parts provided on a part of the crank shaft. CONSTITUTION:Output shaft parts 4a of a crank shaft 4, in other words, both right and left side parts in a crank case cover 1 are provided with guide grooves (guide parts) 10, 11 for intake and exhaust valves 5, 6 so that these valves may be switched through sliding pieces 12, 13 having followers 17 for engaging 14 the guide grooves 10, 11. In the case of said valve driving device, the guide grooves 10, 11 are formed on the outer peripheries of collars 40 fitted around the output shaft parts 4a in order to make the guide parts to be different bodies from the crank shaft 4. The collars 40 are formed in a roughly cylindrical shape in order to be fitted around the output shaft parts 4a, and are fixed to the output axial parts 4a by pins 44 in a turn-stop condition. Consequently guide part machining can be simplified.
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公开(公告)号:CN216841857U
公开(公告)日:2022-06-28
申请号:CN202122843467.0
申请日:2021-11-19
Applicant: 重庆潍柴发动机有限公司 , 潍柴重机股份有限公司
IPC: F01L1/10
Abstract: 本实用新型公开了一种偏心轴及可变气门执行机构,涉及可变气门正时系统技术领域。偏心轴,包括支撑轴,所述支撑轴沿轴向间隔设置有两个支撑臂,两所述支撑臂上安装有与所述支撑轴偏心设置的随动轴,两所述支撑臂上设置有安装定位面,安装所述偏心轴时,所述安装定位面与发动机机体上的安装基准面平行设置。本实用新型偏心轴及可变气门执行机构能够实现精准安装,能够达到精准确定凸轮从动件与凸轮轴的初始相对位置的目的。
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公开(公告)号:CN211524952U
公开(公告)日:2020-09-18
申请号:CN201922235057.0
申请日:2019-12-13
Applicant: 浙江派尼尔科技股份有限公司
Abstract: 本实用新型公开了一种手持式混合油四冲程微型发动机,包括气缸体组件、箱体组件,箱体组件安装于气缸体组件下端,气缸体组件上端安装有气门阀体组件、箱体组件内安装有曲轴连杆活塞组件,气门阀体组件通过气门联动组件与箱体组件连接安装;气缸体组件侧壁上设有进气口和出气口,气缸体组件上安装有点火器,点火器电连接至火花塞,曲轴连杆活塞组件包括曲轴,曲轴的一端伸出箱体组件外。本实用新型重量极轻,会二次回流,提高排放,提升发动机性能;使用混合汽油,既满足大功率底油耗的前提下,在多个方向翻转都不会出现熄火现象。(ESM)同样的发明创造已同日申请发明专利
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公开(公告)号:CN2570463Y
公开(公告)日:2003-09-03
申请号:CN02257494.8
申请日:2002-09-28
Applicant: 卢涛
Inventor: 卢涛
IPC: F01L1/10
Abstract: 一种顶置竖轴式凹轮配气传动装置,本实用新型属于四冲程发动机配气传动装置,由两个相互咬合的伞齿轮1、2把曲轴的转动传递给圆柱凹轮5,并使摇动臂14、15连接的滚动轴承9、10在圆柱凹轮5的进气凹槽7和排气凹槽6中上下动作,向上时,摇动臂以摇臂中心轴16为支点另一端向下摇动并通过回位叉18和软扭簧17压迫气门11开启;向下时,摇动臂以摇臂中心轴16为支点另一端向上回位并通过回位叉18和软扭簧17叉动气门关闭。本实用新型结构简单、摩擦损失小、运转可靠,可以使四冲程发动机体积减小,重量减轻。
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公开(公告)号:CN2090422U
公开(公告)日:1991-12-11
申请号:CN88208530
申请日:1988-07-13
Applicant: 陈小鸿
Inventor: 陈小鸿
Abstract: 一种活塞式无曲轴二冲程内燃机,其结构是两个气缸(2)(16)成相对组合,两个活塞(3)(10)由四根连杆(4)(5)(8)(9)连接,活塞分别连接在连杆(4)(5)(8)(9)组成的四边形的另一对顶点(25)(26)处,四边形的另一对角的顶点分别安装在单向离合器(6)(7)的臂(24)(27)处,排气门(13)(18),火花塞(1)(7)的排气或点火,由单向离合器(6)(7)的臂使单向顶轮(11)(20)、白金(12)动作来实现,火花塞(1)(17)装在气缸(2)(16)上。其优点是效率高、振动小、加工简单,适应于需要配备动力的设备。
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公开(公告)号:EP2864592A1
公开(公告)日:2015-04-29
申请号:EP12880105.7
申请日:2012-06-26
Applicant: Cogen Microsystems Pty Ltd
Inventor: VAN DE LOO, Paul , SCHULTZ, Nicholas, Luke
CPC classification number: F01B9/02 , F01B7/14 , F01B25/10 , F01B29/10 , F01L5/00 , F01L5/04 , F01L15/16 , F02G1/043
Abstract: An expander for a heat engine, the expander being capable of converting a high pressure gaseous working fluid to useful work, the expander including: • high pressure working fluid supply means; • at least one reciprocating piston reciprocating in a cylinder between top-dead-centre (TDC) and bottom-dead-centre (BDC) with a long dwell time at TDC; • a working fluid inlet valve that opens and closes to introduce, while open, high pressure working fluid from the working fluid supply means into an expansion chamber in the cylinder at or near TDC; • power transfer means that transfers work done on a piston by the working fluid to a form of useful work output; and • an exhaust valve to release expanded working fluid from the expansion chamber to a volume of low pressure working fluid; wherein piston travel is small during transition of the inlet valve from open to closed and from closed to open.
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公开(公告)号:EP0311282A2
公开(公告)日:1989-04-12
申请号:EP88308852.8
申请日:1988-09-23
Applicant: JAGUAR CARS LIMITED
Inventor: Parsons, Bryan Nigel Victor
CPC classification number: F01L1/10 , F01L1/30 , F01L13/0015
Abstract: A valve mechanism includes a poppet type valve (11), a valve lever (20) pivotally mounted at one end and attached at the other end to the end of the stem (12) of valve (11), the valve lever (20) defines a track (25) in which is located a drive pin (39) and a drive mechanism (30, 35, 37, 38) is arranged to drive the drive pin (39) in oscillatory manner; the track (25) has a first portion (28) which, when the valve (11) is closed is engaged by the drive pin (39) and coincides with the path of the drive pin (39), and a second portion (26, 27) which diverges from the path of the drive pin (39) so that when engaged by the drive pin (39) movement of the drive pin (39) will cause the valve lever (20) to move, opening and closing the valve (11). Preferably the mean position of oscillation of the drive pin (39) is adjustable so that the duration and amplitude of valve opening may be varied.
Abstract translation: 阀机构包括提升阀(11),一端枢转地安装在阀门(11)的阀杆(12)的另一端的阀杆(20),阀杆(20) 定义了轨道(25),其中定位有驱动销(39)和驱动机构(30,35,37,38),以便以振荡的方式驱动驱动销(39); 轨道(25)具有第一部分(28),当阀(11)关闭时,驱动销(39)接合并与驱动销(39)的路径重合,第二部分(26) ,27),其从所述驱动销(39)的路径分叉,使得当所述驱动销(39)接合时,所述驱动销(39)的运动将导致所述阀杆(20)移动,打开和关闭所述阀 (11)。 优选地,驱动销(39)的振荡的平均位置是可调节的,使得可以改变阀打开的持续时间和幅度。
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