-
公开(公告)号：US20140190433A1
公开(公告)日：2014-07-10
申请号：US14162161
申请日：2014-01-23
Applicant: Cummins Inc.
Inventor： David M. Barnes , Adam C. Cecil
IPC: F01L1/047
CPC classification number: F01L1/047 , F01L1/053 , F01L1/18 , F01L1/26 , F01L1/267 , F01L1/34 , F01L13/0021 , F01L13/0026 , F01L2001/0473 , F01L2001/34489 , F02D13/0269 , F02D2013/0292 , F02M26/01 , Y02T10/142 , Y10T29/49293
Abstract: A variable valve actuation system in one form includes a rocker coupled with a valve stem at one end and a cam follower at the other end. The rocker is operable to rotate about a fixed axis and the cam follower includes a set of lower rollers operable to follow one cam lobe and an upper roller operable to follow another cam lobe. A leaf spring can be used to couple the cam follower with the rocker. A cam shaft can have a nested configuration that includes an inner shaft, an intermediate tube, and an outer tube. Cam lobes can be fastened to the cam shaft by fastening through each of the inner shaft, intermediate tube, and outer tube. The cam lobes can be attached by at least two devices inserted from either side of the cam shaft and that are not inserted at least through the inner shaft.
Abstract translation: 一种形式的可变气门致动系统包括在一端与阀杆连接的摇杆和另一端的凸轮从动件。 摇杆可操作以围绕固定轴线旋转，并且凸轮从动件包括一组可操作以跟随一个凸轮凸角的下辊和可操作以跟随另一凸轮凸角的上辊。 可以使用板簧将凸轮从动件与摇杆联接。 凸轮轴可以具有包括内轴，中间管和外管的嵌套构造。 凸轮凸起可以通过固定在内轴，中间管和外管中的每一个而紧固到凸轮轴。 凸轮凸角可以通过从凸轮轴的任一侧插入的至少两个装置来连接，并且至少不穿过内轴。
-
公开(公告)号：US12215650B2
公开(公告)日：2025-02-04
申请号：US17596931
申请日：2021-05-17
Applicant: Cummins Inc.
Inventor： Robert Earl Hoye , Jeffrey D. Jones , Daniel J. Mohr , David M. Barnes , Timothy Shipp
Abstract: A cylinder head includes novel designs for undercuts, contours of the outer enclosure, coolant jackets, and other cavities within an outer enclosure of the cylinder head. The cylinder head design enables the reduction of weight of the head while maintaining structural integrity of the head, and improves control of temperatures in intake side and exhaust side zones of the heads to improve operational efficiency of the engine. A method is provided for additive manufacturing of the cylinder head including the disclosed designs.
-
公开(公告)号：US11112009B2
公开(公告)日：2021-09-07
申请号：US16839626
申请日：2020-04-03
Applicant: CUMMINS INC.
Inventor： David M. Barnes
Abstract: A piston for an internal combustion engine includes a skirt and a crown coupled to the skirt. The crown is produced in isolation from the skirt using an additive manufacturing process. The piston includes a first air gap between the crown and the skirt. According to an example embodiment, the crown includes a plurality of sections produced in isolation from the skirt. The crown may include a second air gap disposed between two of the plurality of sections.
-
Patent Agency Ranking
公开(公告)号：US11067029B2
公开(公告)日：2021-07-20
申请号：US16050596
申请日：2018-07-31
Applicant: CUMMINS INC.
Inventor： David M. Barnes , David J. Eckroth
Abstract: An internal combustion engine includes a cylinder head and a cylinder block. The cylinder head includes a first boss cylinder head conduit portion and a first boss cylinder head cavity portion. The first boss cylinder head conduit portion is configured to receive a first fastener without threadably engaging the first fastener. The first boss cylinder head conduit portion has a first diameter. The first boss cylinder head cavity portion is aligned with the first boss cylinder head conduit portion. The first boss cylinder head cavity portion is configured to receive the first fastener without threadably engaging the first fastener. The first boss cylinder head cavity portion has a second diameter greater than the first diameter. The cylinder block is coupled to the cylinder head. The cylinder block includes a first boss cylinder block threaded portion.
-
公开(公告)号：US20210189914A1
公开(公告)日：2021-06-24
申请号：US16771086
申请日：2017-12-13
Applicant: Cummins Inc.
Inventor： David M. Barnes , Kevin C. Augustin, Sr.
Abstract: The present disclosure provides a remote mount for an idler gear assembly, comprising: a gear mounting plate including a plurality of bores configured to receive a corresponding plurality of fasteners to mount a gear assembly to the gear mounting plate; and an attachment bracket including a plurality of mounting openings configured to receive a corresponding plurality of bolts to mount the remote mount to a cylinder head. The gear mounting plate supports the gear assembly such that a gear of the gear assembly rotates about an axis that is parallel to an axis of a crankshaft of an engine and the attachment bracket mounts to an upper surface of the cylinder head.
-
公开(公告)号：US20200056514A1
公开(公告)日：2020-02-20
申请号：US16661158
申请日：2019-10-23
Applicant: Cummins Inc.
Inventor： Darren Yaoshun Ting , David M. Barnes
IPC: F01L1/24 , F01L1/14 , F01L13/06 , F01L13/00 , F01L1/053 , F01L1/18 , F01L1/26 , F02D13/04 , F02D13/06 , F02D13/02
Abstract: For a given cylinder in the engine having two intake valves and two exhaust valves, one of the intake valves is driven by a bucket tappet, while the other intake valve is actuated via a roller finger follower. Similarly, one of the exhaust valves is driven by a bucket tappet, while the other exhaust valve is actuated via a roller finger follower. The intake valves read inputs form an intake camshaft, and the exhaust valves read inputs from an exhaust camshaft.
-
公开(公告)号：US10001035B2
公开(公告)日：2018-06-19
申请号：US15545933
申请日：2017-03-14
Applicant: CUMMINS INC.
Inventor： Adam C. Cecil , David M. Barnes
CPC classification number: F01L1/24 , F01L1/181 , F01L1/2405 , F01L1/2416 , F01L1/26 , F01L1/267 , F01L1/46 , F01L2103/00 , F01L2105/00 , F01L2107/00 , F01L2820/01
Abstract: An eccentric hydraulic lash adjuster, a combustion engine comprising the eccentric hydraulic lash adjuster, and a method of assembling the combustion engine, the combustion engine including a rocker lever having a nose at a distal end thereof, and a bridge bar extending between two valves, the rocker lever configured to apply pressure on the bridge bar to actuate the two valves, and an eccentric hydraulic lash adjuster positioned in the nose of the rocker lever; and a fuel injector adjacent to the nose of the rocker lever and the bridge bar, wherein the eccentric hydraulic lash adjuster includes a housing having a pivot point and a longitudinal axis offset from the pivot point and is configured to pivot about the pivot point when the rocker lever pivots about the rocket lever shaft, wherein the offset is dimensioned to prevent interference between the nose and the fuel injector.
-
公开(公告)号：US20180119579A1
公开(公告)日：2018-05-03
申请号：US15545933
申请日：2017-03-14
Applicant: CUMMINS INC.
Inventor： Adam C. Cecil , David M. Barnes
CPC classification number: F01L1/24 , F01L1/181 , F01L1/2405 , F01L1/2416 , F01L1/26 , F01L1/267 , F01L1/46 , F01L2103/00 , F01L2105/00 , F01L2107/00 , F01L2820/01
Abstract: An eccentric hydraulic lash adjuster, a combustion engine comprising the eccentric hydraulic lash adjuster, and a method of assembling the combustion engine, the combustion engine including a rocker lever having a nose at a distal end thereof, and a bridge bar extending between two valves, the rocker lever configured to apply pressure on the bridge bar to actuate the two valves, and an eccentric hydraulic lash adjuster positioned in the nose of the rocker lever; and a fuel injector adjacent to the nose of the rocker lever and the bridge bar, wherein the eccentric hydraulic lash adjuster includes a housing having a pivot point and a longitudinal axis offset from the pivot point and is configured to pivot about the pivot point when the rocker lever pivots about the rocket lever shaft, wherein the offset is dimensioned to prevent interference between the nose and the fuel injector.
-
-
-
-
-
-
-
Search Results
38
records
(took 0.017 seconds)
