-
公开(公告)号：US11377985B2
公开(公告)日：2022-07-05
申请号：US16815444
申请日：2020-03-11
Applicant: Cummins Inc.
Inventor： Adam C. Cecil , Anshul Shambhav , Anthony Kyle Perfetto
IPC: F01L13/06 , F01L1/14 , F01L13/00 , F01L1/25 , F02D13/02 , F02D13/04 , F01L1/18 , F01L1/053 , F01N3/00 , F01L1/344
Abstract: A system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system provides air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through one of a plurality of exhaust valves, and a controller coupled to a sensor to control a switching tappet for compression release braking. Alternatively to a tappet, the system includes a roller finger follower controlling an opening and closing timing of exhaust valves, the roller finger follower has an inner roller follower arm adjacent an outer sliding follower, and a controller that in response to an engine braking request locks the inner roller follower arm with the outer sliding follower to contact a second cam lobe and open the exhaust valve during a compression stroke of the cylinder.
-
公开(公告)号：US20200208547A1
公开(公告)日：2020-07-02
申请号：US16815444
申请日：2020-03-11
Applicant: Cummins Inc.
Inventor： Adam C. Cecil , Anshul Shambhav , Anthony Kyle Perfetto
Abstract: A system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system provides air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through one of a plurality of exhaust valves, and a controller coupled to a sensor to control a switching tappet for compression release braking. Alternatively to a tappet, the system includes a roller finger follower controlling an opening and closing timing of exhaust valves, the roller finger follower has an inner roller follower arm adjacent an outer sliding follower, and a controller that in response to an engine braking request locks the inner roller follower arm with the outer sliding follower to contact a second cam lobe and open the exhaust valve during a compression stroke of the cylinder.
-
公开(公告)号：US10697332B2
公开(公告)日：2020-06-30
申请号：US16303465
申请日：2017-09-25
Applicant: CUMMINS INC.
Inventor： Adam C. Cecil , David M. Barnes
Abstract: A valve train assembly (16) includes a fuel injector (1), an intake rocker lever assembly (10), and an exhaust rocker lever assembly (14). The intake and exhaust rocker lever assemblies (10) can include an eccentric hydraulic lash adjuster (11) that is located in the nose (31) of the respective rocker lever assemblies (10). The rocker lever assemblies (10) are configured to allow a clearance area between a nose (31) of the intake rocker lever assembly (10) and the nose (31) of the exhaust rocker lever assembly (14). As such, the fuel injector (1) can be positioned in the clearance area, while still allowing the eccentric hydraulic lash adjusters to apply a load onto a corresponding valve bridge (2). For example, the eccentric hydraulic lash adjuster (11) can include an outer housing (20) and a pivot ball (21), wherein the pivot ball (21) is positioned at an offset (23) from a lateral centerline of the outer housing (20).
-
公开(公告)号：US20180298796A1
公开(公告)日：2018-10-18
申请号：US15768640
申请日：2016-10-28
Applicant: CUMMINS INC.
Inventor： Adam C. Cecil
Abstract: System and methods mount an accessory to an engine block having a pilot bore aligned with a first plane and sealing surfaces aligned to a second plane different than the first plane. The accessory includes a sliding pilot for interfacing with the pilot bore that is capable of sliding in an “x” direction yet fixed in a “y” direction with respect to the accessory housing. Interfacing the sliding pilot in a mounting position with the pilot bore along a “z” direction locates the accessory with respect to the engine block in the “y” and “z” directions. Fastening the accessory to the sealing surfaces of the engine block locates the accessory in the “x” direction with sufficient precision to mitigate gear backlashing and providing one or more fluid seals between the accessory and the engine block.
-
公开(公告)号：US12234753B2
公开(公告)日：2025-02-25
申请号：US18311607
申请日：2023-05-03
Applicant: Cummins Inc.
Inventor： Adam C. Cecil
Abstract: A valve train assembly is provided for modifying a lift of at least one intake valve and/or exhaust valve. The valve train assembly includes at least one tappet that is housed in a rocker housing with at least one rocker lever. The at least one tappet is engaged to an actuator that is operable to change the tappet from a first configuration in which all cam lobe motion is imparted to the rocker lever for opening and closing the intake and/or exhaust valve, to a second configuration in which less than all motion of the cam lobe is transferred to the rocker lever.
-
Patent Agency Ranking
公开(公告)号：US12025034B2
公开(公告)日：2024-07-02
申请号：US17536876
申请日：2021-11-29
Applicant: Cummins Inc.
Inventor： Adam C. Cecil
CPC classification number: F01L1/053 , F01L1/3442 , F01L2001/0476 , F01L2001/0537 , F01L2001/054 , F01L2001/34423
Abstract: A camshaft assembly for attachment to a cylinder head of an internal combustion engine, the camshaft assembly includes a one-piece camshaft bearing cap having an internal bearing surface sized to receive a portion of a camshaft therein, the internal bearing surface configured to support the portion of the camshaft between 180 degrees and 360 degrees circumferentially. The one-piece camshaft bearing cap is removable from the camshaft to enable line of sight access by an operator to the cylinder head. The internal bearing surface has oil supply grooves fluidly coupled to drillings for operation of a cam phaser assembled with a drive member and the camshaft. Head bolts are used to attach the cylinder head to the engine and are accessible upon removal of the camshaft bearing cap and camshaft. Standard camshaft bearing caps can be assembled with the camshaft and the cylinder head at various attachment points.
-
公开(公告)号：US11959412B2
公开(公告)日：2024-04-16
申请号：US17661778
申请日：2022-05-03
Applicant: Cummins Inc.
Inventor： Adam C. Cecil
Abstract: Pistons and piston assemblies for an internal combustion engine is provided. The piston assembly includes a piston coupled to a connecting rod with a piston pin. The piston pin includes a non-circular outer cross-sectional shape.
-
公开(公告)号：US20230272726A1
公开(公告)日：2023-08-31
申请号：US18311607
申请日：2023-05-03
Applicant: Cummins Inc
Inventor： Adam C. Cecil
Abstract: A valve train assembly is provided for modifying a lift of at least one intake valve and/or exhaust valve. The valve train assembly includes at least one tappet that is housed in a rocker housing with at least one rocker lever. The at least one tappet is engaged to an actuator that is operable to change the tappet from a first configuration in which all cam lobe motion is imparted to the rocker lever for opening and closing the intake and/or exhaust valve, to a second configuration in which less than all motion of the cam lobe is transferred to the rocker lever.
-
公开(公告)号：US20230264672A1
公开(公告)日：2023-08-24
申请号：US18110294
申请日：2023-02-15
Applicant: Cummins Inc.
Inventor： Chunyi Xia , Andrew W. Osburn , David B. Snyder , Adam C. Cecil , Anant Puri , Ming-Feng Hsieh , Timothy Shipp
CPC classification number: B60W10/06 , B60W10/08 , B60W20/15 , B60W2710/0677 , B60W2710/0666 , B60W2710/0605
Abstract: In a system having a hybrid powertrain having a piston internal combustion engine, and a motor/generator, and the motor generator being coupleable to a clutch and thereby to a gearbox, the engine further being equipped with a valvetrain control system operable to change the engine valve operation between a first mode in which the engine can operate in a conventional internal combustion mode and a second mode in which pumping losses are reduced when the engine is not operating in a conventional internal combustion mode. This allows it to be rotated without generating power, in a hybrid mode, with minimal losses.
-
公开(公告)号：US20220082034A1
公开(公告)日：2022-03-17
申请号：US17536876
申请日：2021-11-29
Applicant: Cummins Inc.
Inventor： Adam C. Cecil
Abstract: A camshaft assembly for attachment to a cylinder head of an internal combustion engine, the camshaft assembly includes a one-piece camshaft bearing cap having an internal bearing surface sized to receive a portion of a camshaft therein, the internal bearing surface configured to support the portion of the camshaft between 180 degrees and 360 degrees circumferentially. The one-piece camshaft bearing cap is removable from the camshaft to enable line of sight access by an operator to the cylinder head. The internal bearing surface has oil supply grooves fluidly coupled to drillings for operation of a cam phaser assembled with a drive member and the camshaft. Head bolts are used to attach the cylinder head to the engine and are accessible upon removal of the camshaft bearing cap and camshaft. Standard camshaft bearing caps can be assembled with the camshaft and the cylinder head at various attachment points.
-
-
-
-
-
-
-
-
-
Search Results
45
records
(took 0.018 seconds)
