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    • 73. 发明授权
    • Piston valve
    • 活塞阀
    • US5809947A
    • 1998-09-22
    • US919040
    • 1997-08-27
    • Kevin R. Thompson
    • Kevin R. Thompson
    • F01L11/02F01L11/00
    • F01L11/02
    • A valve is provided for a piston of a two stroke engine wherein the piston has a sidewall and top and bottom surfaces with the top surface having a first opening therein and a second opening extending between the top and bottom surfaces for receiving the valve, and wherein the piston has a plurality of pressure relief openings extending between the top and bottom surfaces. The valve comprises a valve plate positioned in the opening in the top surface overlaying the pressure relief openings with the valve plate having a central opening extending parallel to the sidewall. The valve plate is movable from a seated position covering the pressure relief openings to an unseated position exposing the pressure relief openings when pressure inside the piston exceeds a predetermined value. A retainer pin has an elongated body extending through the central opening in the valve plate, a head atop the retainer pin overlying the valve plate, and a hollow end portion flared radially outward against the bottom surface of the piston to limit upward movement of the retainer pin. The valve opens on the downstroke of the piston to relieve some of the crankcase pressure allowing the piston to descend with less resistance.
    • 为二冲程发动机的活塞提供阀,其中活塞具有侧壁和顶表面和底表面,顶表面在其中具有第一开口,第二开口在顶表面和底表面之间延伸以用于接纳阀,并且其中 活塞具有在顶表面和底表面之间延伸的多个压力释放开口。 所述阀包括位于所述顶表面中的所述开口中的阀板,所述阀板覆盖所述压力释放开口,所述阀板具有平行于所述侧壁延伸的中心开口。 当活塞内部的压力超过预定值时,阀板可以从覆盖压力释放开口的就座位置移动到暴露压力释放开口的非转动位置。 保持销具有延伸穿过阀板中的中心开口的细长主体,覆盖在阀板上的保持销顶部的头部以及抵靠活塞底表面径向向外张开的中空端部,以限制保持器的向上运动 销。 阀门在活塞的下行程打开,以减轻曲轴箱压力的一些压力,允许活塞以较小的阻力下降。
    • 75. 发明授权
    • Gas bearing piston assembly
    • 气体轴承活塞组件
    • US4455974A
    • 1984-06-26
    • US223314
    • 1981-01-08
    • Wilbur ShapiroSargit S. Bupara
    • Wilbur ShapiroSargit S. Bupara
    • F16C32/06F16J1/02F01L11/00
    • F16C32/0685F16J1/02
    • A gas bearing supported piston assembly (2) for an internal combustion engine including a piston body (14, 14') and a segmented piston ring (3) arranged to expand to compensate for wear. A piston supporting gas layer (27) is formed between the cylinder walls (8) and the exterior surface of each piston ring segment (32) by means of a plurality of restricted flow passages (40) formed in each segment (32) and extending between the inner and outer surfaces of the segment (32). In one embodiment, gas under pressure is supplied to the ring segments (32) through a single annular cavity (36) formed in piston body (14). In another embodiment, gas under pressure is supplied to the ring segments (32) through a plurality of corresponding holes (70) in piston body (14').
    • 一种用于内燃机的气体轴承支撑活塞组件(2),其包括活塞体(14,14')和分段式活塞环(3),所述分段式活塞环(3)被布置成膨胀以补偿磨损。 活塞支撑气体层(27)通过形成在每个段(32)中的多个限制流动通道(40)形成在气缸壁(8)和每个活塞环段(32)的外表面之间,并延伸 在所述段(32)的内表面和外表面之间。 在一个实施例中,压力下的气体通过形成在活塞体(14)中的单个环形空腔(36)供应到环形段(32)。 在另一个实施例中,在压力下的气体通过活塞体(14')中的多个对应的孔(70)供应到环形段(32)。
    • 76. 发明授权
    • Internal combustion engines
    • 内燃机
    • US4294201A
    • 1981-10-13
    • US9490
    • 1979-02-05
    • Robert V. Swartz
    • Robert V. Swartz
    • F02B1/04F02B25/02F02B33/04F02B75/02F02F3/22F01L11/00F02B25/12
    • F02B25/02F02B33/04F02F3/22F02B1/04F02B2075/025
    • A two-stoke cycle combustion-engine with crank-chamber compression is described, free of charging transfer passages external to the cylinder, with pumping-displacement exceeding working-displacement for responsive intake and thorough scavenging of spent-gas residue, and featuring an annular water-cooled cell, suspended from the cylinder-head by several water-conduits, and cooperating with an annular recess in the piston-head so as to form, and transversely separate, a plain working-chamber and an annular working-chamber, longitudinally scavengeable in series, bottom-to-top and top-to-bottom, respectively, with minimal loss of charge to exhaust-port, such a system of scavenging also reducing piston cooling-problems and misfiring associated with charge-dilution (in gasoline-engines operating under partial-charge conditions). In addition, a more general scavenging principle is enunciated and claimed, applicable to rear-compression and separately-scavenged two-stroke engines.
    • 描述了具有曲轴室压缩的双行程循环燃烧发动机,在气缸外部没有充气传递通道,泵送位移超过工作位移,用于响应进气并彻底清除废气残留物,并具有环形 水冷电池,通过几个水管从气缸头悬挂,并与活塞头中的环形凹部配合,以形成和横向地分离平面工作室和环形工作室,纵向 分别从底部到顶部和顶部到底部可分离,排气口的充电损失最小,这样一种清除系统也减少了活塞冷却问题和与充电稀释相关的失火(在汽油 - 发动机在部分充电条件下运行)。 另外,更为通用的清扫原理得到了阐述,并且声称适用于后压缩和单独清扫的二冲程发动机。