公开(公告)号：US10934899B2

公开(公告)日：2021-03-02

申请号：US16188577

申请日：2018-11-13

Applicant: Caterpillar Inc.

Inventor： Ashwin Hattiangadi ,  Rong Qu ,  Sanjay Kumar ,  Kevin Yoder

IPC: F01L3/04 ,  F01L3/22 ,  F02M21/02 ,  F16K1/42 ,  F16K25/00 ,  F16K25/04

Abstract: A valve seat insert for a gas exchange valve controlling gas exchange of a cylinder includes an insert body having an inner peripheral surface, an outer peripheral surface, and a valve seating surface structured to contact the gas exchange valve at a closed position and profiled to limit valve recession thereof. The valve seating surface includes an arrangement of linear segments and curved segments forming crowns to contact the gas exchange valve at different wear states.

公开(公告)号：US20160222834A1

公开(公告)日：2016-08-04

申请号：US15095093

申请日：2016-04-10

Applicant: Caterpillar Inc.

Inventor： Jakub M. Walczak ,  Kevin Yoder ,  Sahul Hameed Peer Mohamed

IPC: F01L1/14

CPC classification number: F01L1/146 ,  F01L1/26 ,  F01L2001/054 ,  F01L2105/00 ,  F01L2810/02

Abstract: A valve lifter assembly for an engine is provided. The valve lifter assembly includes a first valve lifter and a second valve lifter received through a first bore and a second bore, respectively, of a cylinder head. The valve lifter assembly includes a spacer disposed between the first valve lifter and the second valve lifter. The spacer constrains rotation of the first and second valve lifters within a predefined angle range. A pair of first bevel surfaces is adapted to provide a surface contact with a first inner face of the first valve lifter. A pair of second bevel surfaces is adapted to provide a surface contact with a second inner face of the second valve lifter. A second recessed surface is defined between each of the pair of second bevel surfaces.

Abstract translation: 提供一种用于发动机的气门挺杆组件。 气门挺杆组件包括分别通过气缸盖的第一孔和第二孔容纳的第一气门挺杆和第二气门挺杆。 所述气门挺杆组件包括设置在所述第一气门挺杆和所述第二气门挺杆之间的间隔件。 间隔件将第一和第二气门挺杆的旋转限制在预定角度范围内。 一对第一斜面用于与第一阀提升器的第一内表面提供表面接触。 一对第二斜面适于提供与第二阀提升器的第二内表面的表面接触。 第二凹陷表面限定在每对第二斜面之间。

公开(公告)号：US20200149441A1

公开(公告)日：2020-05-14

申请号：US16188577

申请日：2018-11-13

Applicant: Caterpillar Inc.

Inventor： Ashwin Hattiangadi ,  Rong Qu ,  Sanjay Kumar ,  Kevin Yoder

IPC: F01L3/04 ,  F01L3/22 ,  F02M21/02 ,  F16K1/42

Abstract: A valve seat insert for a gas exchange valve controlling gas exchange of a cylinder includes an insert body having an inner peripheral surface, an outer peripheral surface, and a valve seating surface structured to contact the gas exchange valve at a closed position and profiled to limit valve recession thereof. The valve seating surface includes an arrangement of linear segments and curved segments forming crowns to contact the gas exchange valve at different wear states.