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1. 发明申请

WO2009079687A1 A FOUR-STROKE FREE PISTON INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：四冲程自由活塞内燃机
公开(公告)号：WO2009079687A1
公开(公告)日：2009-07-02
申请号：PCT/AU2008/001859
申请日：2008-12-17
申请人： CHEESEMAN, Peter, Charles
发明人： CHEESEMAN, Peter, Charles
IPC分类号： F01B11/02 , F01B11/08 , F02B71/00
CPC分类号： F02B71/04 , F01B11/004 , F02B63/06
摘要： A four-stroke free piston internal combustion engine (1) has an engine block structure (2) defining first and second axially opposing cavities (3 a, 3b). A piston structure (4) is mounted in the engine block structure (2) for reciprocating longitudinal motion. The piston structure (4) has a first piston head (5a) located in the first cavity (3a), a second piston head (5b) located in the second cavity (3b) and a piston body (6) connecting the piston heads (5a, 5b). A first combustion chamber (8a) is defined in the first cavity (3a) by a first piston head (5a) and the engine block structure (2), and is configured to expand on displacement of the piston structure (4) in a first direction. A second combustion chamber (8b) is defined in the second cavity (3b) by the second piston head (5b) and the engine block structure (2), and is configured to expand on displacement of the piston structure (4) in a second direction. A first inlet valve (15a) and first exhaust valve (16a) each communicates with the first combustion chamber (8a). A second inlet valve (15b) and second exhaust valve (16b) communicates with the second combustion chamber (8b). A first spring device (1 Ia) is adapted to absorb energy associated with displacement of the piston structure (4) in the first direction and release energy to drive the piston structure (4) in the second direction during a subsequent stroke. A second spring device (1 Ib) is adapted to absorb energy associated with displacement of the piston structure (4) in the second direction and release energy to drive the piston structure (4) in the first direction during a subsequent stroke. An energy extraction and delivery system (17, 18) is configured to extract energy from the engine (1) during a combustion/expansion stroke of the first combustion chamber (8a) and during a combustion/expansion stroke of the second combustion chamber (8b), and to deliver energy to the engine (1) to drive the piston structure in the first direction during a compression stroke of the second combustion chamber (8b).
摘要翻译：四冲程自由活塞内燃机（1）具有限定第一和第二轴向相对腔（3a，3b）的发动机缸体结构（2）。活塞结构（4）安装在发动机缸体结构（2）中用于往复运动。活塞结构（4）具有位于第一腔（3a）中的第一活塞头（5a），位于第二腔（3b）中的第二活塞头（5b）和连接活塞头 5a，5b）。第一燃烧室（8a）由第一活塞头（5a）和发动机缸体结构（2）限定在第一空腔（3a）中，并且构造成在活塞结构（4）的第一方向。第二燃烧室（8b）由第二活塞头（5b）和发动机缸体结构（2）限定在第二空腔（3b）中，并且构造成在第二燃烧室（3b）的第二空腔方向。第一入口阀（15a）和第一排气阀（16a）各自与第一燃烧室（8a）连通。第二入口阀（15b）和第二排气阀（16b）与第二燃烧室（8b）连通。第一弹簧装置（11a）适于在随后的冲程期间吸收与活塞结构（4）在第一方向上的位移相关联的能量并且释放能量以在第二方向上驱动活塞结构（4）。第二弹簧装置（11b）适于吸收与第二方向上的活塞结构（4）的位移有关的能量，并释放能量以在随后的冲程期间沿第一方向驱动活塞结构（4）。能量提取和输送系统（17,18）构造成在第一燃烧室（8a）的燃烧/膨胀冲程期间以及在第二燃烧室（8b）的燃烧/膨胀冲程期间从发动机（1）中提取能量），并且在第二燃烧室（8b）的压缩冲程期间将能量传递到发动机（1）以在第一方向上驱动活塞结构。

2. 发明申请

WO2007059565A1 FOUR-STROKE FREE PISTON ENGINE 审中-公开
标题翻译：四冲程自由活塞发动机
公开(公告)号：WO2007059565A1
公开(公告)日：2007-05-31
申请号：PCT/AU2006/001753
申请日：2006-11-21
申请人： CHEESEMAN, Peter, Charles
发明人： CHEESEMAN, Peter, Charles
IPC分类号： F02B71/00 , F01B1/00
CPC分类号： F02B71/00 , F02B53/02 , F02B63/04 , F02B63/041 , F02B71/04 , F02B2075/027 , Y02T10/17
摘要： A four stroke free piston internal combustion engine (210) is disclosed. The engine (210) comprises an engine block structure (212) and a rigid shuttle (214) mounted to the engine block structure (212) for reciprocal movement relative thereto along a linear shuttle centreline (215). The engine (210) further comprises a selectively sealable network of inlet passages (216) and a selectively sealable network of outlet passages (218). The shuttle (214) comprises a generally cylindrical first shuttle part (220), a generally cylindrical second shuttle part (222) axially spaced from the first shuttle part (220) and a shuttle frame (224) rigidly fixing the first shuttle part (220) relative to the second shuttle part (222). The first and second shuttle parts (220, 222) are axially aligned along the shuttle centreline (215). The first shuttle part (220) provides first and second opposite shuttle surfaces (228, 232) and the second shuttle part (222) provides third and fourth opposite shuttle surfaces (236, 240). The shuttle centreline (215) extends centrally of all four shuttle surfaces (228, 232, 236, 240). The engine (210) further comprises a first chamber (250) formed between the first shuttle surface (220) and the engine block structure (212), a second chamber (252) formed between the second shuttle surface (232) and the engine block structure (212), a third chamber (254) formed between the third shuttle surface (236) and the engine block structure (212) and a fourth chamber (256) formed between the fourth shuttle surface (240) and the engine block structure (212). The shuttle frame (224) is outside of each of the chambers (250, 252, 254, 256).
摘要翻译：公开了一种四冲程自由活塞内燃机（210）。发动机（210）包括安装在发动机缸体结构（212）上的发动机缸体结构（212）和刚性梭（214），用于沿着线性梭心线215相对于其相对运动。发动机（210）还包括可选择地密封的入口通道（216）网络和可选择性地密封的出口通道网络（218）。梭子（214）包括大致圆柱形的第一往复运动部分（220），与第一往复运动部分（220）轴向间隔开的大致圆柱形的第二往复部分（222）和刚性地固定第一往复运动部分（220）的往复运动框架）相对于第二梭子部分（222）。第一和第二穿梭部件（220,222）沿着穿梭中心线（215）轴向对准。第一往复部分（220）提供第一和第二相对的梭子表面（228,232），并且第二往复部分（222）提供第三和第四相对的梭子表面（236,240）。穿梭中心线（215）在所有四个梭子表面（228,232,236,240）的中心延伸。发动机（210）还包括形成在第一往复表面（220）和发动机缸体结构（212）之间的第一室（250），形成在第二往复表面（232）和发动机缸体结构（212），形成在第三往复表面（236）和发动机缸体结构（212）之间的第三室（254）和形成在第四往复表面（240）和发动机缸体结构（212）之间的第四室 212）。穿梭框架（224）在每个室（250,252,254,256）之外。

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