Reciprocating piston with variable compression height for internal
combustion engines
    1.
    发明授权
    Reciprocating piston with variable compression height for internal combustion engines 失效
    具有可变压缩高度的内燃机的活塞活塞

    公开(公告)号:US5191862A

    公开(公告)日:1993-03-09

    申请号:US887811

    申请日:1992-05-26

    CPC分类号: F02B75/044

    摘要: A reciprocating piston is disclosed with variable compression height for internal combustion engines in particular. For structural simplification of the temperature-dependent change in the compression height of the reciprocating piston, a spring is provided which consists of a shape memory alloy and interacts with the pressure limiting valve. This permits temperature-dependent change in the compression height of the reciprocating piston exclusively by the pressure limiting valve so that structural simplification is achieved.

    摘要翻译: 公开了具有可变压缩高度的往复活塞,特别是用于内燃机。 为了结构简化往复活塞的压缩高度的温度变化,提供了由形状记忆合金组成并与限压阀相互作用的弹簧。 这允许往复式活塞的压缩高度的温度依赖性变化仅由压力限制阀,从而实现结构简化。

    Method for removing a workpiece part and machine tool

    公开(公告)号:US10449592B2

    公开(公告)日:2019-10-22

    申请号:US14417953

    申请日:2012-08-06

    摘要: A method for removal of a workpiece part from a residual workpiece of a sheet-like workpiece includes detecting an interlocking of the workpiece part with the residual workpiece. The workpiece is fixed for machining by a holding device and movable in an X-Y plane of the workpiece. The workpiece part is formed by cutting machining on the workpiece resting on a workpiece support. Before or after the cutting, a gripper device is positioned in a removal position relative to the workpiece part, and the gripper device is activated and the workpiece part is gripped in its position resting on the workpiece support. The method includes initiating at least one release strategy for automatic workpiece removal. At least one travelling movement with at least one travel path of at least one of the holding device and the gripper device is activated with at least one movement component in the X-Y plane.

    Exhaust arrangement for a gasoline
    4.
    发明授权
    Exhaust arrangement for a gasoline 失效
    汽油排气装置

    公开(公告)号:US5582005A

    公开(公告)日:1996-12-10

    申请号:US448985

    申请日:1995-05-24

    摘要: The invention relates to a gasoline engine having a catalyst for reducing the emission pollutants, with an oxygen absorption device located in the exhaust line upstream of the catalyst. According to the invention, the gasoline engine is operated in a first operating range with a lean air/fuel ratio (.lambda.), and oxygen is removed from the exhaust by the absorption device. In a second operating range, the gasoline engine is operated at .lambda.=1, and the absorption device is bypassed or deactivated. In the case of a gasoline engine with a Denox catalyst the gasoline engine is operated constantly with a lean air/fuel ratio, with the active surface of the Denox catalyst being "depoisoned" temporarily by activating the oxygen absorption device.

    摘要翻译: 本发明涉及具有用于减少排放污染物的催化剂的汽油发动机,其中氧吸收装置位于催化剂上游的排气管线中。 根据本发明,汽油发动机在具有稀薄空气/燃料比(λ)的第一操作范围内操作,并且通过吸收装置从排气中除去氧气。 在第二操作范围内,汽油发动机以λ= 1运行,并且吸收装置被旁路或停用。 在具有脱氧催化剂的汽油发动机的情况下,汽油发动机以稀薄的空气/燃料比恒定运行,通过激活氧吸收装置,Denox催化剂的活性表面暂时被“去污”。