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1. 发明专利

JPH11229882A 2-CYCLE ENGINE 失效
公开(公告)号：JPH11229882A
公开(公告)日：1999-08-24
申请号：JP26581998
申请日：1998-09-04
申请人： YANG DAVID S W
发明人： YANG DAVID S W
IPC分类号： F01L3/06 , F01L9/04 , F02B17/00 , F02B25/04 , F02B75/02 , F02F1/00 , F02F1/10
摘要： PROBLEM TO BE SOLVED: To provide a small and lightweight 2-cycle engine of a simple design, which is suitable for being inserted into an small capacity automobile, is structurally symmetrical, and has a low production cost. SOLUTION: This 2-cycle engine has valve driving means within a valve drive housing 12 to reversibly move a valve member having a head and a stem, and houses upper and lower steps which form a combustion chamber 54 that includes a reversibly movable piston member. The upper step has at least two intake ports 56 and a fuel injection port, and ignition means 60 which ignites a mixture of fuel and air. The lower step has an exhaust port 62 which discharges exhaust gas. In addition, this engine also has a cylinder housing which is vertically in line with the drive housing to which it is fixed, and crank housings 90, 92 which are connected to the lower step 52 of the cylinder housing that includes a crank which is connected to a piston, and an oil pan.

2. 发明专利

DE69816201D1 未知
公开(公告)号：DE69816201D1
公开(公告)日：2003-08-14
申请号：DE69816201
申请日：1998-08-24
申请人： YANG DAVID S W
发明人： YANG DAVID S W
IPC分类号： F01L3/06 , F01L9/04 , F02B17/00 , F02B25/04 , F02B75/02 , F02F1/00 , F02F1/10 , F02B75/16
摘要： A two stroke cycle internal combustion engine (10) is provided which has a one-piece cylinder housing (14) removably secured to a valve drive housing (12) at a top section thereof and a crank housing (16) at a bottom section. The overall combination of the valve drive housing (12), the cylinder housing (14) and the crank housing (16) are formed in a substantially symmetrical manner about a vertical axis line (18). An intake valve member (30) is positioned in a top section of cylinder housing (14) with an exhaust port (62) located at the bottom of a piston (44) travel within a combustion chamber (54). The valve member (30) opens on a downward stroke of the piston (44) which feeds compressed air into chamber (54) and forces spent gases through the exhaust port (62). Fuel is injected into the combustion chamber (54) prior to the peak of the compression segment of the overall combustion cycle. The valve member (30) is formed of a substantially non-magnetic composition and is secured to a permanent magnet (32) which acts in cooperation with a reversible pole electromagnetic drive (28). With the one-piece formation of the component elements in combination with the symmetrical contour of overall engine (10), there is provided a higher engine efficiency coupled with a substantially cleaner combustion and allows for a modular design to simplify the construction and manufacturing of two cycle engine (10).

3. 发明专利

DE69816201T2 未知
公开(公告)号：DE69816201T2
公开(公告)日：2004-07-29
申请号：DE69816201
申请日：1998-08-24
申请人： YANG DAVID S W
发明人： YANG DAVID S W
IPC分类号： F01L3/06 , F01L9/04 , F02B17/00 , F02B25/04 , F02B75/02 , F02F1/00 , F02F1/10 , F02B75/16
摘要： A two stroke cycle internal combustion engine (10) is provided which has a one-piece cylinder housing (14) removably secured to a valve drive housing (12) at a top section thereof and a crank housing (16) at a bottom section. The overall combination of the valve drive housing (12), the cylinder housing (14) and the crank housing (16) are formed in a substantially symmetrical manner about a vertical axis line (18). An intake valve member (30) is positioned in a top section of cylinder housing (14) with an exhaust port (62) located at the bottom of a piston (44) travel within a combustion chamber (54). The valve member (30) opens on a downward stroke of the piston (44) which feeds compressed air into chamber (54) and forces spent gases through the exhaust port (62). Fuel is injected into the combustion chamber (54) prior to the peak of the compression segment of the overall combustion cycle. The valve member (30) is formed of a substantially non-magnetic composition and is secured to a permanent magnet (32) which acts in cooperation with a reversible pole electromagnetic drive (28). With the one-piece formation of the component elements in combination with the symmetrical contour of overall engine (10), there is provided a higher engine efficiency coupled with a substantially cleaner combustion and allows for a modular design to simplify the construction and manufacturing of two cycle engine (10).

4. 发明专利

AT244819T 未知
公开(公告)号：AT244819T
公开(公告)日：2003-07-15
申请号：AT98306751
申请日：1998-08-24
申请人： YANG DAVID S W
发明人： YANG DAVID S W
IPC分类号： F01L3/06 , F01L9/04 , F02B17/00 , F02B25/04 , F02B75/02 , F02F1/00 , F02F1/10 , F02B75/16
摘要： A two stroke cycle internal combustion engine (10) is provided which has a one-piece cylinder housing (14) removably secured to a valve drive housing (12) at a top section thereof and a crank housing (16) at a bottom section. The overall combination of the valve drive housing (12), the cylinder housing (14) and the crank housing (16) are formed in a substantially symmetrical manner about a vertical axis line (18). An intake valve member (30) is positioned in a top section of cylinder housing (14) with an exhaust port (62) located at the bottom of a piston (44) travel within a combustion chamber (54). The valve member (30) opens on a downward stroke of the piston (44) which feeds compressed air into chamber (54) and forces spent gases through the exhaust port (62). Fuel is injected into the combustion chamber (54) prior to the peak of the compression segment of the overall combustion cycle. The valve member (30) is formed of a substantially non-magnetic composition and is secured to a permanent magnet (32) which acts in cooperation with a reversible pole electromagnetic drive (28). With the one-piece formation of the component elements in combination with the symmetrical contour of overall engine (10), there is provided a higher engine efficiency coupled with a substantially cleaner combustion and allows for a modular design to simplify the construction and manufacturing of two cycle engine (10).

5. 发明申请

WO2017075808A1 LASER SPOT WELDING OF OVERLAPPING ALUMINUM WORKPIECES 审中-公开
标题翻译：重叠铝工件的激光点焊
公开(公告)号：WO2017075808A1
公开(公告)日：2017-05-11
申请号：PCT/CN2015/094003
申请日：2015-11-06
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC , YANG, David S.
发明人： YANG, David S. , TAO, Wu , ZHANG, Jing , WOLSKER, Justin A.
IPC分类号： B23K26/22 , B23K26/32
CPC分类号： B23K26/22 , B23K26/082 , B23K26/32 , B23K2203/10
摘要： A method of laser welding a workpiece stack-up (10) that includes at least two overlapping aluminum workpieces (12, 14) comprises advancing a laser beam (24) relative to a plane of a top surface (20) of the workpiece stack-up (10) and along a spot weld travel pattern (74) that includes one or more nonlinear inner weld paths and an outer peripheral weld path that surrounds the one or more nonlinear inner weld paths. Such advancement of the laser beam (24) along the spot weld travel pattern (74) translates a keyhole (78) and a surrounding molten aluminum weld pool (76) along a corresponding route relative to the top surface (20) of the workpiece stack-up (10). Advancing the laser beam (24) along the spot weld travel pattern (74) forms a weld joint (72), which includes resolidified composite aluminum workpiece material derived from each of the aluminum workpieces (12, 14) penetrated by the surrounding molten aluminum weld pool (76), that fusion welds the aluminum workpieces (12, 14) together.
摘要翻译：激光焊接包括至少两个重叠的铝工件（12,14）的工件堆叠体（10）的方法包括使激光束（24）相对于顶表面（10）的工件（20）并且沿着包括一个或多个非线性内部焊接路径的点焊接行进图案（74）以及围绕所述一个或多个非线性内部焊接路径的外部周边焊接路径。激光束（24）沿着点焊行进图案（74）的这种前进沿着相对于工件堆叠的顶表面（20）的对应路线平移键孔（78）和周围的熔融铝熔池（76）（10）。沿着点焊行进图案（74）推进激光束（24）形成焊接接头（72），该焊接接头包括源自被周围熔融铝焊缝穿透的每个铝工件（12,14）的固化复合铝工件材料（76），将铝制工件（12,14）熔合在一起。

6. 发明申请

WO2017035729A1 METHOD FOR LASER WELDING ALUMINUM WORKPIECES 审中-公开
标题翻译：激光焊接铝工艺的方法
公开(公告)号：WO2017035729A1
公开(公告)日：2017-03-09
申请号：PCT/CN2015/088569
申请日：2015-08-31
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC , YANG, David S.
发明人： YANG, David S. , TAO, Wu
IPC分类号： B23K26/322 , B23K26/21
CPC分类号： B23K26/082 , B23K26/244 , B23K26/322 , B23K2201/006 , B23K2201/18 , B23K2201/34 , B23K2203/10
摘要： A method of laser welding a workpiece stack-up (10) that includes at least two overlapping aluminum workpieces (12, 14), at least one of which includes a protective anti-corrosion coating (38), is disclosed. The disclosed method includes advancing the laser beam (56) relative to the top surface (26) of the workpiece stack-up (10) along a travel path (78, 78', 78'', 78''') that imposes bidirectional movement of the laser beam (56). In particular, the laser beam (56) moves in a forward direction (80) while also moving back and forth in a lateral direction (82) oriented transverse to the forward direction (80) as it is being advanced relative to the top surface (26). Such bidirectional movement is believed to help disturb the protective anti-corrosion coating (38) in and around the molten aluminum weld pool (74), thus leading to a laser weld joint (68) that contains less weld defects derivable from the protective anti-corrosion coating(s) (38).
摘要翻译：公开了一种激光焊接包括至少两个重叠的铝工件（12,14）的工件叠层（10）的方法，其中至少一个包括保护性防腐蚀涂层（38）。所公开的方法包括沿着施加双向的行进路径（78,78'，78“，78”）推进激光束（56）相对于工件叠层（10）的顶表面（26）激光束（56）的移动。特别地，激光束（56）沿向前方向（80）移动，同时在横向于向前方向（80）的横向（82）上前后移动，因为其相对于顶表面前进（ 26）。认为这种双向运动有助于扰乱熔融铝熔池（74）内和周围的保护性防腐涂层（38），从而导致激光焊接接头（68），其包含较少的焊接缺陷，腐蚀涂层（38）。

7. 发明申请

WO2017035728A1 METHOD FOR LASER WELDING STEEL WORKPIECES 审中-公开
标题翻译：激光焊接工具的方法
公开(公告)号：WO2017035728A1
公开(公告)日：2017-03-09
申请号：PCT/CN2015/088563
申请日：2015-08-31
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC , YANG, David S.
发明人： YANG, David S. , TAO, Wu , ZHANG, Jing , WOLSKER, Justin Allen
IPC分类号： B23K26/322 , B23K26/21
CPC分类号： B23K26/244 , B23K26/082 , B23K26/322 , B23K2201/006 , B23K2201/18 , B23K2201/34 , B23K2203/04
摘要： A method of laser welding a workpiece stack-up (10) that includes at least two overlapping steel workpieces (12, 14), at least one of which is a zinc-coated steel workpiece, is disclosed. The disclosed method includes advancing the laser beam (56) relative to the top surface (26) of the workpiece stack-up (10) in a way that imposes bidirectional movement of the laser beam (56). In particular, as it is being advanced relative to the top surface (26) of the workpiece stack-up (10), the laser beam (56) moves in a forward direction (80) while also moving back and forth in a lateral direction (82) oriented transverse to the forward direction. Such bidirectional movement is believed to minimize zinc vapor entrapment within the molten steel weld pool (74), thus leading to a laser weld joint (68) that contains less weld defects derivable from zinc vapors that may be generated by the heat of the laser beam (56).
摘要翻译：公开了一种激光焊接包括至少两个重叠钢工件（12,14）的工件叠层（10）的方法，其中至少一个是镀锌钢工件。所公开的方法包括以施加激光束（56）的双向移动的方式使激光束（56）相对于工件叠层（10）的顶表面（26）前进。特别地，当相对于工件叠层（10）的顶面（26）进行相对移动时，激光束（56）向前移动（80），同时沿横向方向前后移动（82）横向于向前方向定向。认为这种双向运动可最大限度地减少钢水熔池（74）内的锌蒸气截留，从而导致激光焊接接头（68），其包含较少的可由激光束热产生的锌蒸汽的焊接缺陷（56）。

8. 发明申请

WO2016192039A1 LASER WELDING OVERLAPPING METAL WORKPIECES 审中-公开
标题翻译：激光焊接重金属工件
公开(公告)号：WO2016192039A1
公开(公告)日：2016-12-08
申请号：PCT/CN2015/080578
申请日：2015-06-02
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC , YANG, David S.
发明人： YANG, David S. , WOLSKER, Justin Allen , ZHANG, Jing , TAO, Wu , GAO, Dalong
IPC分类号： B23K26/24
CPC分类号： B23K26/244 , B23K2201/34 , B23K2203/04 , B23K2203/08
摘要： A method of laser welding a workpiece stack-up (10) that includes at least two overlapping steel workpieces (12, 14) comprises directing a laser beam (40) at a top surface (26) of the workpiece stack-up to form a keyhole (56) surrounded by a molten steel weld pool (58). The laser beam is conveyed along a predefined weld pattern that includes one or more nonlinear inner weld paths (66) and an enclosed outer peripheral weld path (68) surrounding the one or more nonlinear inner weld paths. During conveyance of the laser beam along the one or more nonlinear inner weld paths, the keyhole fully penetrates through the workpiece stack-up from the top surface of the stack-up to the bottom surface (28) of the stack-up. The method produces weld joints between the steel workpieces that do not have an intentionally imposed gap formed between their faying surfaces.
摘要翻译：激光焊接包括至少两个重叠的钢工件（12,14）的工件叠层（10）的方法包括在工件叠层的顶表面（26）处引导激光束（40）以形成钥匙孔（56）由钢水熔池（58）包围。激光束沿着包括一个或多个非线性内部焊接路径（66）和围绕一个或多个非线性内部焊接路径的封闭外部周边焊接路径（68）的预定焊接图案传送。在沿着一个或多个非线性内部焊接路径传送激光束期间，钥匙孔从堆叠的顶部表面完全穿透工件叠层到堆叠的底部表面（28）。该方法在钢工件之间产生焊接接头，这些焊接接头在其接合表面之间不形成有意的间隙。

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