-
公开(公告)号：US11428189B1
公开(公告)日：2022-08-30
申请号：US17318675
申请日：2021-05-12
申请人： Caterpillar Inc.
摘要： An anti-polishing ring includes a ring body defining an axis of revolution, and a radial direction that is perpendicular to the axis of revolution, and a circumferential direction about the axis of revolution. The ring body includes an outer circumferential surface, a bottom surface, a top surface, and an inner circumferential surface. The inner circumferential surface defines an inner diameter, the ring body defines a radial thickness measured from the inner circumferential surface to the outer circumferential surface, and a ratio of the radial thickness to the inner diameter ranges from 0.015 to 0.020.
-
公开(公告)号：US11193447B2
公开(公告)日：2021-12-07
申请号：US17002679
申请日：2020-08-25
发明人： Talat Shaer
摘要： A piston of a cylinder of an internal combustion engine includes: an upper piston crown; a radially outer surface; a plurality grooves arranged on the radially outer surface; and a plurality of piston rings each positioned in a respective one of the grooves. The radially outer surface forms a top land arranged between the upper piston crown and an uppermost one of the grooves of the piston, and the top land has an axial length and a non-abrasion-proof coating.
-
公开(公告)号：US11168642B2
公开(公告)日：2021-11-09
申请号：US16979229
申请日：2018-12-12
摘要： The present invention addresses the problem of providing a cylinder liner for insert casting, with which the bonding strength between a cylinder liner and a cylinder block can be improved by reducing voids generated on the cylinder block. The problem is solved by a cylinder liner for insert casting which includes plural projections on its outer peripheral surface and satisfies the following (i) and (ii): (i) the number of the projections is 5 to 50 per 1 cm2 on the outer peripheral surface, and (ii) when two 15.2 mm×0.03 mm lines are set in parallel with a gap of 3.8 mm therebetween at an arbitrary position on the outer peripheral surface of the cylinder liner, the total number of projections that are in contact with the two lines is 8 or less.
-
公开(公告)号：US20210332750A1
公开(公告)日：2021-10-28
申请号：US17206525
申请日：2021-03-19
发明人： Yoshihisa Nou , Osamu Aoki , Yuji Harada , Kenji Uchida , Xiyao Ge
摘要： A combustion chamber is defined by a cylinder block, a cylinder head, and a piston. The cylinder block includes a block body that has a cylinder inner wall covered by a coat layer. The coat layer includes: a heat-shielding layer that covers an upper end of the cylinder inner wall, a piston ring not slidingly contacting the upper end; a heat-insulating layer arranged on a back side of the heat-shielding layer; and a heat diffusion layer arranged between the heat-insulating layer and the heat-shielding layer. Regarding thermal conductivity, the heat-insulating layer is lower than the block body, the heat-shielding layer is lower than the block body and the heat-insulating layer, and the heat diffusion layer is higher than the heat-insulating layer and the heat-shielding layer. The heat diffusion layer includes a side end edge and an extending portion, each of which abuts the block body.
-
公开(公告)号：US10996016B1
公开(公告)日：2021-05-04
申请号：US16548005
申请日：2019-08-22
发明人： Adam Jarvis , Joseph Troll , Matthew Jones , Luke Helsel
摘要： A hydraulic cylinder with a load distribution nut connected to an end cap reduces fatigue experience by the end cap portion of the cylinder. The load distribution nut separates the axial load generated in the system from a single to multiple load paths. By introducing additional load paths, the load experienced by the traditional load path is reduced. Additionally, the load experienced by the end cap can be tailored by modifying the design of the load distribution nut and end cap. By either increasing or decreasing the surface area of the load distribution nut the axial load reduction on the end cap is correspondingly decreased or increased.
-
公开(公告)号：US10890151B2
公开(公告)日：2021-01-12
申请号：US16603072
申请日：2018-03-26
发明人： Kazuaki Tokumaru , Masahiko Hayatani , Satoshi Usui , Atsuji Saito , Kenichiro Tokuo , Masamichi Yagai , Masayuki Suganami
摘要： Provided is a high-pressure fuel pump which can fix a cylinder to a pump body using a simple structure, and can reduce a displacement amount inward in a radial direction of the cylinder. A high-pressure fuel pump includes a pump body which is formed with a pressing chamber and a cylinder which is inserted in a hole formed in the pump body. The cylinder is swaged to the hole by pressing a convex portion on an outside in a radial direction to fit into the hole on an opposite side to the pressing chamber, by screwing a formed screw thread into the hole, or by being swaged with the opposite side to the pressing chamber. The cylinder is formed with a clearance in the radial direction with respect to the hole of the pump body all over a region from a bonding portion to an upper end.
-
公开(公告)号：US10851751B2
公开(公告)日：2020-12-01
申请号：US16603072
申请日：2018-03-26
发明人： Kazuaki Tokumaru , Masahiko Hayatani , Satoshi Usui , Atsuji Saito , Kenichiro Tokuo , Masamichi Yagai , Masayuki Suganami
摘要： Provided is a high-pressure fuel pump which can fix a cylinder to a pump body using a simple structure, and can reduce a displacement amount inward in a radial direction of the cylinder. A high-pressure fuel pump includes a pump body which is formed with a pressing chamber and a cylinder which is inserted in a hole formed in the pump body. The cylinder is swaged to the hole by pressing a convex portion on an outside in a radial direction to fit into the hole on an opposite side to the pressing chamber, by screwing a formed screw thread into the hole, or by being swaged with the opposite side to the pressing chamber. The cylinder is formed with a clearance in the radial direction with respect to the hole of the pump body all over a region from a bonding portion to an upper end.
-
公开(公告)号：US10760525B2
公开(公告)日：2020-09-01
申请号：US16342480
申请日：2016-10-20
申请人： HONDA MOTOR CO., LTD
发明人： Daisuke Kaneko , Masakatsu Satoh
摘要： A member having a sliding contact surface that exerts a reduced frictional force when making sliding contact with a prescribed member and retains the lubricating oil more uniformly is provided. The sliding contact surface is a honed surface having flat plateau parts and groove parts. As calculated in regard to the sliding contact surface by using a mean line derived from a cross-sectional curve of the sliding contact surface in accordance with ISO 13565-1, a ten-point average roughness is 0.6-7.0 μm, a load length ratio at a cut level of 20% is 60-98%, an effective load roughness is 0-1 μm, and a mean value of intervals between the groove parts having a depth of 0.2 μm or greater from the mean line is 79-280 μm.
-
公开(公告)号：US10436193B1
公开(公告)日：2019-10-08
申请号：US15801424
申请日：2017-11-02
发明人： Douglas Jahnke
摘要： The present invention provides a cylinder liner retainer system with a torque multiplier and associated method to quickly release an existing cylinder liner and reinsert a new cylinder liner as a replacement.
-
公开(公告)号：US10281042B2
公开(公告)日：2019-05-07
申请号：US15679711
申请日：2017-08-17
申请人： Robert Bosch GmbH
发明人： Bernd Gaertner
摘要： A method is provided for forming wear-resistant layer on the surface of cylinder bores a cylinder drum of a hydrostatic axial piston machine within which a respective piston is moved in a manner subject to intensive wear. The cylinder bores are gas nitrocarburized in two stages to minimize the wear and include a thin uniform connecting layer that has a thickness of 4 to 16 μm and a comparatively thick underlying diffusion layer.
-
-
-
-
-
-
-
-
-
搜索结果
341 条记录 (耗时 0.022 秒)