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223 条记录 (耗时 0.018 秒)

    Spheroidal rotary valve for combustion engines
    41.
    发明授权
    Spheroidal rotary valve for combustion engines 失效
    内燃机用球形旋转阀

    公开(公告)号：US06321699B1

    公开(公告)日：2001-11-27

    申请号：US09139462

    申请日：1998-08-25

    申请人： Richard Berkeley Britton

    发明人： Richard Berkeley Britton

    IPC分类号： F01L700

    CPC分类号： F01L7/10 ,  F01L7/022 ,  F01L2001/0537 ,  F01L2113/00

    摘要： A rotary valve is disclosed suitable for replacement of poppet valves. The valve is temperature controlled through a combination of heat transfer techniques and means for reducing heat transfer between gas flows and the valve components. Assymetric geometry is used in the seals to reduce wear and friction, and a removable combustion chamber in the valve housing is used to facilitate fabrication, servicing and performances. A prototype of the valve was developed for a 30 cubic inch displacement four-stroke spark-ignition engine. The gas seals and lubricated parts of the rotary valve have been found to remain below 400 degrees Fahrenheit during test runs wherein the valve controlled gas flows and has maintained a brake mean effective pressure of 108 to 121 psi for periods of up to an hour. The valve uses pure rotation, and can be dynamically balanced for operation to the peak RPM permissible with reciprocating pistons. A four-stroke engine converted to rotary valving needs very few parts. For example, a four cylinder automotive engine fitted with a spheroidal rotary valve system requires only 11 moving parts; namely a crankshaft, pistons and rods, the valveshaft and a timing belt to drive the valveshaft. The valve is applicable to new engine production and is also suitable as a cylinder head assembly for retro-fit to existing engines of the overhead camshaft type.

    摘要翻译： 公开了适于更换提升阀的旋转阀。 阀门通过传热技术的组合进行温度控制，并减少气流与阀门部件之间的热传递。 在密封件中使用分数几何形状来减少磨损和摩擦，并且使用阀壳中的可拆卸燃烧室来促进制造，维修和性能。 开发了一款30立方英寸四冲程点火发动机的阀门原型。 已经发现旋转阀的气体密封件和润滑部件在试验运行期间保持低于400华氏度，其中阀控制的气体流动并且在达到一小时的时间内保持制动平均有效压力为108至121psi。 阀门采用纯粹的旋转，可以动态平衡运行到往复式活塞允许的峰值RPM。 转换为旋转阀的四冲程发动机需要很少的部件。 例如，配有球形旋转阀系统的四缸汽车发动机只需要11个运动部件; 即曲轴，活塞和杆，阀轴和驱动阀轴的同步带。 该阀门适用于新型发动机生产，也适用于气缸盖组件，以适应现有的顶置凸轮轴型发动机。

    Rotary valve for internal combustion engine
    44.
    发明授权
    Rotary valve for internal combustion engine 失效
    内燃机用旋转阀

    公开(公告)号：US3945364A

    公开(公告)日：1976-03-23

    申请号：US482648

    申请日：1974-06-24

    申请人： Danny G. Cook

    发明人： Danny G. Cook

    IPC分类号： F01L7/02 ,  F01L7/10 ,  F01L7/00

    CPC分类号： F01L7/022 ,  F01L7/10

    摘要： An internal combustion engine employing a rotary valve having a single passage which is adapted to provide both intake and exhaust valving functions. The valve is formed with a circular outer periphery and is mounted for rotation about a transverse axis between intake and exhaust ports which are provided at the head end of the combustion chamber. The passage is defined by a concaval recess which extends across a chord of the valve periphery. Means is provided for rotating the valve in timed relationship with movement of a piston within the chamber so that the passage moves into simultaneous register with the intake port and combustion chamber during the intake phase, and into simultaneous register with the exhaust port and combustion chamber during the exhaust phase.

    摘要翻译： 一种内燃机，其采用具有适于提供进气和排气阀功能的单个通道的旋转阀。 阀形成有圆形的外周边，并且安装成围绕设置在燃烧室的头端处的进排气口之间的横向轴线旋转。 该通道由穿过阀周边的弦的凹槽限定。 提供了用于以与室内的活塞的运动成时间关系旋转阀的装置，使得通道在进气阶段期间与进气口和燃烧室同时对准，并且同时与排气口和燃烧室对准 排气相。