-
公开(公告)号：US12234781B1
公开(公告)日：2025-02-25
申请号：US18633622
申请日：2024-04-12
Applicant: Caterpillar Inc.
Inventor： Matthew Wolk , Michael D. Roley , John R. McDonald , Ry C. Colwell , Quinton Burcar
Abstract: Operating an engine includes opening and closing exhaust valves in an engine braking timing pattern, charging a first cylinder with air fed directly from an intake manifold, and releasing the directly fed air in a first braking event. Operating the engine further includes charging the first cylinder with air fed via a flow-through path through a second cylinder operating as an air conduit, and releasing the air fed through the flow-through path and pressurized to brake the engine in a second braking event. Related apparatus and valve lift profiles are also disclosed.
-
公开(公告)号：US11885246B2
公开(公告)日：2024-01-30
申请号：US17503597
申请日：2021-10-18
Applicant: Caterpillar Inc.
Inventor： Jeffrey Clark Krieger , Michael D. Roley , Kyle Michael Rader
CPC classification number: F01L3/20 , F01L3/02 , B21K1/22 , F01L3/06 , F01L2301/00 , F01L2303/00 , F02F2001/245
Abstract: An engine valve includes a stem, a head comprising an outer lip surface, a seating surface extending from the outer lip surface toward the stem, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface. The combustion surface includes a first convex arcuate surface spaced away from the outer lip surface, at least partially forming a raised ring, and a first concave arcuate surface spaced away from the outer lip surface, at least partially forming a dimple.
-
公开(公告)号：US11215092B2
公开(公告)日：2022-01-04
申请号：US16717428
申请日：2019-12-17
Applicant: Caterpillar Inc.
Inventor： Jeffrey Clark Krieger , Michael D. Roley , Kyle Michael Rader
Abstract: An engine valve includes a stem, a head comprising an outer lip surface, a seating surface extending from the outer lip surface toward the stem, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface. The combustion surface includes a first convex arcuate surface spaced away from the outer lip surface, at least partially forming a raised ring, and a first concave arcuate surface spaced away from the outer lip surface, at least partially forming a dimple.
-
Patent Agency Ranking
公开(公告)号：US09879575B2
公开(公告)日：2018-01-30
申请号：US15176856
申请日：2016-06-08
Applicant: Caterpillar Inc.
Inventor： Douglas D. Erdman , Michael D. Roley , Rong Qu
Abstract: 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
Applicant: Caterpillar Inc.
Inventor： Douglas D. Erdman , Michael D. Roley , Rong Qu
Abstract: 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.
Abstract translation: 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：US12215611B1
公开(公告)日：2025-02-04
申请号：US18610672
申请日：2024-03-20
Applicant: Caterpillar Inc.
Inventor： Quinton Burcar , Michael D. Roley , Paul K. Stark , Ram P. Anjaneyulu
Abstract: A spacer for a valvetrain in an engine system includes a spacer body defining a spacer axis extending between a first axial spacer body end and a second axial spacer body end, and including an outer peripheral surface, a circumferentially extending inner peripheral surface forming a through-bore, an oil spray port extending from the inner peripheral surface to the outer peripheral surface, and a circumferentially extending fluid groove formed in the inner peripheral surface and extending to the oil spray port. Related valvetrain and rocker arm assembly apparatus is also disclosed.
-
公开(公告)号：US20220034243A1
公开(公告)日：2022-02-03
申请号：US17503597
申请日：2021-10-18
Applicant: Caterpillar Inc.
Inventor： Jeffrey Clark Krieger , Michael D. Roley , Kyle Michael Rader
Abstract: An engine valve includes a stem, a head comprising an outer lip surface, a seating surface extending from the outer lip surface toward the stem, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface. The combustion surface includes a first convex arcuate surface spaced away from the outer lip surface, at least partially forming a raised ring, and a first concave arcuate surface spaced away from the outer lip surface, at least partially forming a dimple.
-
公开(公告)号：US20210180480A1
公开(公告)日：2021-06-17
申请号：US16717428
申请日：2019-12-17
Applicant: Caterpillar Inc.
Inventor： Jeffrey Clark Krieger , Michael D. Roley , Kyle Michael Rader
Abstract: An engine valve includes a stem, a head comprising an outer lip surface, a seating surface extending from the outer lip surface toward the stem, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface. The combustion surface includes a first convex arcuate surface spaced away from the outer lip surface, at least partially forming a raised ring, and a first concave arcuate surface spaced away from the outer lip surface, at least partially forming a dimple.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.014 seconds)
