公开(公告)号：US20220025825A1

公开(公告)日：2022-01-27

申请号：US17449992

申请日：2021-10-05

Applicant: Cummins Inc.

Inventor： Adam C. Cecil ,  Richard J. Gustafson

IPC: F02D13/02 ,  F01L1/18 ,  F01L1/047 ,  F01L1/24

Abstract: A variable valve timing assembly is provided for extending a duration of an intake valve opening. The variable valve timing assembly includes an intake rocker mounted on a pedestal and operable by a cam lobe to open and close the intake valve. The intake rocker includes a lever extension, and a holding member in the pedestal is lockable in position by a hydraulic circuit in the pedestal to contact the lever extension of the intake rocker and hold the intake valve in the open position. A reset pin in the pedestal is actuatable by the cam lobe to release the holding member to allow the intake valve to close.

公开(公告)号：US20210340921A1

公开(公告)日：2021-11-04

申请号：US17378996

申请日：2021-07-19

Applicant: Cummins Inc.

Inventor： Anthony Kyle Perfetto ,  Anshul Shambhav ,  Adam C. Cecil ,  Ryan Edward Schultz

IPC: F02D13/04 ,  F01L1/047 ,  F01L13/00 ,  F01L13/06 ,  F02D13/02 ,  F02D13/06

Abstract: An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system to provide 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 respective one of a plurality of exhaust valves. A valve train is provided for cylinder deactivation of a first part of the plurality of cylinders and compression release braking on a second part of the plurality of cylinders.

公开(公告)号：US11008952B2

公开(公告)日：2021-05-18

申请号：US16450146

申请日：2019-06-24

Applicant: Cummins Inc.

Inventor： J. Steven Kolhouse ,  Anshul Shambhav ,  Thomas M. Yonushonis ,  Adrian P. Dale ,  Samuel C. Geckler ,  David J. Stroh ,  Adam C. Cecil ,  Anthony Kyle Perfetto ,  Ryan Edward Schultz

IPC: F02D13/04 ,  F01L13/06 ,  F02D13/02 ,  F01L13/00

Abstract: An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system to provide 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 respective one of a plurality of exhaust valves. The internal combustion engine uses vacuum braking and/or compression release braking in response to one or more braking conditions.

公开(公告)号：US20190360362A1

公开(公告)日：2019-11-28

申请号：US16303465

申请日：2017-09-25

Applicant: CUMMINS INC.

Inventor： Adam C. Cecil ,  David M. Barnes

IPC: F01L1/24 ,  F01L1/26 ,  F01L1/18 ,  F01L13/06 ,  F01L1/344

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：US20160032791A1

公开(公告)日：2016-02-04

申请号：US14448420

申请日：2014-07-31

Applicant: Cummins, Inc.

Inventor： Adam C. Cecil ,  David M. Barnes

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/3445 ,  F01L2001/34466 ,  F01L2001/34486

Abstract: A variable valve timing system and methods of operation are provided. A primary valve train driver is configured to rotate about a primary axis. A primary camshaft includes a first plurality of cams positioned on the primary camshaft. The primary camshaft is coaxially coupled to the primary valve train driver. The first plurality of cams is configured to rotate about the primary axis. A primary camshaft phaser is coaxially coupled to the primary camshaft. The primary camshaft phaser is rotatably coupled to the primary valve train driver so as to rotate the primary camshaft phaser and the primary camshaft to a first phase angle. A secondary camshaft driver on the primary axis is coaxially coupled to the primary camshaft, and a secondary camshaft phaser is coaxially coupled to the primary camshaft and coupled to the secondary camshaft driver on the primary axis. The secondary camshaft phaser is rotatably coupled to the primary valve train driver so as to rotate the secondary camshaft driver on the primary axis to a second phase angle.

Abstract translation: 提供了可变气门正时系统和操作方法。 主阀列驱动器构造成围绕主轴线旋转。 主凸轮轴包括位于主凸轮轴上的第一多个凸轮。 主凸轮轴同轴联接到主阀系列驱动器。 第一组多个凸轮配置成围绕主轴旋转。 主凸轮轴相位器同轴地联接到主凸轮轴。 主凸轮轴相移器可旋转地联接到主气门机构驱动器，以使主凸轮轴相位器和主凸轮轴旋转到第一相位角。 主轴上的次级凸轮轴驱动器同轴联接到主凸轮轴，并且次级凸轮轴相位器同轴地联接到主凸轮轴并且联接到主轴上的次级凸轮轴驱动器。 次级凸轮轴相移器可旋转地联接到主气门机构驱动器，以使主凸轮轴驱动器在主轴上旋转到第二相位角。