-
公开(公告)号：US20180171837A1
公开(公告)日：2018-06-21
申请号：US15384523
申请日：2016-12-20
申请人： Caterpillar Inc.
发明人： Mark D. Veliz , Rong Qu , Arun Lai Gain , Walter Sherman Isenberg , Rui YUan , Thierry Andre Marchione
CPC分类号： F01L3/14 , F01L1/32 , F01L3/06 , Y02T10/146
摘要： A poppet valve has an elongated stem that is configured to extend along a longitudinal axis. The poppet valve further includes a valve body that is disposed laterally with respect to the longitudinal axis and located in a spaced apart relation with an end of the elongated stem. The valve body has a pair of opposing faces disposed co-axial with the longitudinal axis of the elongated stem. The poppet valve also includes at least two arcuately shaped appendages depending downwardly from the end of the elongated stem and extending away from the longitudinal axis of the elongated stem. An end of each appendage is disposed in abutment with an annular region defined on one of the opposing faces of the valve body, a perimeter of the annular region being larger than a perimeter of the elongated stem measured about the longitudinal axis.
-
公开(公告)号：US09879575B2
公开(公告)日：2018-01-30
申请号：US15176856
申请日：2016-06-08
申请人： Caterpillar Inc.
发明人： Douglas D. Erdman , Michael D. Roley , Rong Qu
摘要： A system for lubricating a valve assembly of an engine. The system includes a valve bridge having a base portion is disposed on a guide rod. The guide rod is received within a hole defined in the base portion of the valve bridge to define a chamber and to receive lubricant in the chamber. The valve bridge includes an arm that is engaged with a valve stem. The valve bridge includes a passage in fluidly communicating with the chamber and an end of the arm. The system includes a valve disposed around the valve stem and valve stem guide. The valve seal includes a lip member that abuts an outer surface of the valve stem to control a flow of the lubricant from the passage to a gap defined between the valve stem and the valve stem guide.
-
公开(公告)号：US20160281550A1
公开(公告)日：2016-09-29
申请号：US15176856
申请日：2016-06-08
申请人： Caterpillar Inc.
发明人： Douglas D. Erdman , Michael D. Roley , Rong Qu
摘要： A system for lubricating a valve assembly of an engine is disclosed. The system includes a valve bridge having a base portion is disposed on a guide rod. The guide rod is received within a hole defined in the base portion of the valve bridge to define a chamber and to receive lubricant in the chamber. The valve bridge includes an arm that is engaged with a valve stem. The valve bridge includes a passage in fluidly communicating with the chamber and an end of the arm. The system includes a valve disposed around the valve stem and valve stem guide. The valve seal includes a lip member that abuts an outer surface of the valve stem to control a flow of the lubricant from the passage to a gap defined between the valve stem and the valve stem guide.
摘要翻译： 公开了一种用于润滑发动机的阀组件的系统。 该系统包括具有基座部分的导向杆上的阀桥。 引导杆被容纳在限定在阀桥的基部中的孔中以限定腔室并且在腔室中容纳润滑剂。 阀桥包括与阀杆接合的臂。 阀桥包括与腔室和臂的端部流体连通的通道。 该系统包括围绕阀杆和阀杆引导件设置的阀。 阀密封件包括唇形件，其与阀杆的外表面邻接以控制润滑剂从通道到限定在阀杆和阀杆引导件之间的间隙的流动。
-
公开(公告)号：US11022009B2
公开(公告)日：2021-06-01
申请号：US16251773
申请日：2019-01-18
申请人： Caterpillar Inc.
发明人： Rong Qu , Charles F. Coffey
摘要： A hydraulic lash adjuster includes a longitudinally extending pushrod having a proximal end and a distal end, and a cavity located at the distal end and a piston received in the cavity. The piston includes an internal reservoir and a fluid pathway to the internal reservoir. The fluid pathway includes a longitudinal passage and a radial passage.
-
公开(公告)号：US20210054768A1
公开(公告)日：2021-02-25
申请号：US16544076
申请日：2019-08-19
申请人： Caterpillar Inc.
发明人： Ashwin A. Hattiangadi , Rong Qu
摘要： A valve seat insert of an engine has a valve seating surface including an outer curved segment forming a first wear crown for contacting the valve at an early wear state, an inner curved segment forming a second wear crown for contacting the valve at a later wear state, and a linear segment extending between the outer and the inner curved segments.
-
公开(公告)号：US20170089223A1
公开(公告)日：2017-03-30
申请号：US14869291
申请日：2015-09-29
申请人： Caterpillar Inc.
发明人： Indrajith KIZHAKKETHARA , Gopinath BASKARAN , Ashwin A. HATTIANGADI , Rong Qu , Kevin W. REDINBO
CPC分类号： F01L1/146 , F01L1/18 , F01L1/181 , F01L1/20 , F01L1/26 , F01L1/32 , F01L1/46 , F01L1/462 , F01L3/00 , F01L3/08 , F01L3/10 , F01L3/22 , F01L2001/054 , F01L2103/01 , F01L2105/00 , F01L2820/01
摘要： A valve actuation system is disclosed for use with an internal combustion engine. The valve actuation system may have a rocker shaft, a rocker arm pivotally mounted on the rocker shaft, at least one cam follower and a pushrod connecting the at least one cam follower to the rocker arm. The valve actuation system may also have a plurality of gas exchange valves, and a bridge connecting the rocker arm to the valves. The valve actuation system may further have at least one spring disposed around each of the valves and configured to bias each of the valves toward closed positions, and a rotocoil configured to rotatably connect the at least one spring to each of the valves. The rotocoil may have an internal chamfer at a bridge end with an angle of about 26-28°. The at least one spring may have an assembled load of about 750-850 N.
-
公开(公告)号：US20140366852A1
公开(公告)日：2014-12-18
申请号：US13919627
申请日：2013-06-17
申请人： Caterpillar Inc.
IPC分类号： F02M25/07
摘要： An exhaust gas re-circulation mixer for use with an engine is disclosed. The exhaust gas re-circulation mixer may include an inlet air port configured to receive inlet air, an outlet configured to release a mixture of the inlet air and exhaust gases and a body integrated with and connecting the inlet air port and the outlet together in fluid communication to form a unitary structure. The body may define a cavity therein for mixing the inlet air and the exhaust gases, the exhaust gas re-circulation mixer being composed of a composite material.
摘要翻译： 公开了一种用于发动机的废气再循环混合器。 废气再循环混合器可以包括被配置为接收入口空气的入口空气端口，被配置为释放入口空气和废气的混合物的出口和与入口空气端口和出口一体地集成并连接在一起的流体 沟通形成一体的结构。 主体可以在其中限定一个空腔，用于混合入口空气和废气，废气再循环混合器由复合材料组成。
-
18.发明授权公开(公告)号：US10934899B2
公开(公告)日：2021-03-02
申请号：US16188577
申请日：2018-11-13
申请人： Caterpillar Inc.
发明人： Ashwin Hattiangadi , Rong Qu , Sanjay Kumar , Kevin Yoder
摘要： 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：US10767520B1
公开(公告)日：2020-09-08
申请号：US16544182
申请日：2019-08-19
申请人： Caterpillar Inc.
摘要： A valve seat insert of an engine has a valve seating surface including an outer curved segment forming a first wear crown for contacting the valve at an early wear state, an inner curved segment forming a second wear crown for contacting the valve at a later wear state, and a linear segment extending between the outer and the inner curved segments. A top flow crown is set off radially inward from the engine head, and a sloping segment extending from the top flow crown is oriented at an acute angle relative to the valve seat center axis.
-
公开(公告)号：US10760455B2
公开(公告)日：2020-09-01
申请号：US15384523
申请日：2016-12-20
申请人： Caterpillar Inc.
发明人： Mark D. Veliz , Rong Qu , Arun Lal Gain , Walter Sherman Isenberg , Rui Yuan , Thierry Andre Marchione
摘要： A poppet valve has an elongated stem that is configured to extend along a longitudinal axis. The poppet valve further includes a valve body that is disposed laterally with respect to the longitudinal axis and located in a spaced apart relation with an end of the elongated stem. The valve body has a pair of opposing faces disposed co-axial with the longitudinal axis of the elongated stem. The poppet valve also includes at least two arcuately shaped appendages depending downwardly from the end of the elongated stem and extending away from the longitudinal axis of the elongated stem. An end of each appendage is disposed in abutment with an annular region defined on one of the opposing faces of the valve body, a perimeter of the annular region being larger than a perimeter of the elongated stem measured about the longitudinal axis.
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.013 秒)
