公开(公告)号：US20230358299A1

公开(公告)日：2023-11-09

申请号：US18224435

申请日：2023-07-20

Applicant: Cummins Inc.

Inventor： James A. Dods ,  Michael J. Cooper ,  Paul A. Leggott ,  Graham Dowson

IPC: F16H7/06 ,  F16H55/30

CPC classification number: F16H7/06 ,  F16H55/30 ,  F01L1/022

Abstract: The present disclosure provides a captive sprocket system for an engine, comprising: a sprocket including a first sprocket gear, a second sprocket gear and a retaining disc having a diameter and a thickness; a cylinder block having a bore with a central opening and a plurality of threaded bosses, the plurality of threaded bosses together forming an axial support surface and a radial location surface, the axial support surface and the radial location surface being sized to receive the retaining disc of the sprocket to support and locate the sprocket; and a plurality of captivation screws configured to be received by the plurality of threaded bosses, each captivation screw having a head with a lower surface which, when the captivation screw is received by a threaded boss, overlies the retaining disc and retains the sprocket in the bore.

公开(公告)号：US11746859B2

公开(公告)日：2023-09-05

申请号：US17057178

申请日：2019-05-23

Applicant: Cummins Inc.

Inventor： James A. Dods ,  Michael J. Cooper ,  Paul A. Leggott ,  Graham Dowson

IPC: F16H7/06 ,  F16H55/30 ,  F01L1/02 ,  F01L1/047 ,  F02B67/06

CPC classification number: F16H7/06 ,  F16H55/30 ,  F01L1/022 ,  F01L1/047 ,  F02B67/06 ,  F16H2055/306

Abstract: The present disclosure provides a captive sprocket system for an engine, comprising: a sprocket including a first sprocket gear, a second sprocket gear and a retaining disc having a diameter and a thickness; a cylinder block having a bore with a central opening and a plurality of threaded bosses, the plurality of threaded bosses together forming an axial support surface and a radial location surface, the axial support surface and the radial location surface being sized to receive the retaining disc of the sprocket to support and locate the sprocket; and a plurality of captivation screws configured to be received by the plurality of threaded bosses, each captivation screw having a head with a lower surface which, when the captivation screw is received by a threaded boss, overlies the retaining disc and retains the sprocket in the bore.

公开(公告)号：US10724452B2

公开(公告)日：2020-07-28

申请号：US16333474

申请日：2017-09-19

Applicant: CUMMINS INC.

Inventor： James A. Dods ,  John Jerl Purcell ,  John Peter Jones ,  John R. Anderson ,  Paul Andrew Leggott ,  Graham Dowson

IPC: F02D41/14 ,  F02D41/00 ,  F02M26/41 ,  F02M26/47 ,  F02D41/18 ,  F02F1/24

Abstract: A cylinder head defines an EGR crossover tube integrally formed in the cylinder head. The EGR crossover tube includes a first end fluidly coupled to an exhaust port of an engine. A second end is fluidly coupled to an intake port of the engine. A Venturi tube configuration is positioned between the first and second ends. A first sensor port extends through the cylinder head to the EGR crossover tube. The first sensor port is positioned at a restriction of the Venturi tube configuration. A second sensor port extends through the cylinder head to the EGR crossover tube. The second sensor port is positioned proximate the first end. A differential pressure sensor includes a first pressure sensor positioned in the first sensor port and a second pressure sensor positioned in the second sensor port.

公开(公告)号：US20210207690A1

公开(公告)日：2021-07-08

申请号：US17057178

申请日：2019-05-23

Applicant: Cummins Inc.

Inventor： James A. Dods ,  Michael J. Cooper ,  Paul A. Leggott ,  Graham Dowson

IPC: F16H7/06 ,  F16H55/30

Abstract: The present disclosure provides a captive sprocket system for an engine, comprising: a sprocket including a first sprocket gear, a second sprocket gear and a retaining disc having a diameter and a thickness; a cylinder block having a bore with a central opening and a plurality of threaded bosses, the plurality of threaded bosses together forming an axial support surface and a radial location surface, the axial support surface and the radial location surface being sized to receive the retaining disc of the sprocket to support and locate the sprocket; and a plurality of captivation screws configured to be received by the plurality of threaded bosses, each captivation screw having a head with a lower surface which, when the captivation screw is received by a threaded boss, overlies the retaining disc and retains the sprocket in the bore.

公开(公告)号：US20190264626A1

公开(公告)日：2019-08-29

申请号：US16333474

申请日：2017-09-19

Applicant: CUMMINS INC.

Inventor： James A. Dods ,  John Jerl Purcell ,  John Peter Jones ,  John R. Anderson ,  Paul Andrew Leggott ,  Graham Dowson

IPC: F02D41/00 ,  F02D41/14 ,  F02D41/18 ,  F02F1/24 ,  F02M26/41 ,  F02M26/47

Abstract: A cylinder head defines an EGR crossover tube integrally formed in the cylinder head. The EGR crossover tube includes a first end fluidly coupled to an exhaust port of an engine. A second end is fluidly coupled to an intake port of the engine. A Venturi tube configuration is positioned between the first and second ends. A first sensor port extends through the cylinder head to the EGR crossover tube. The first sensor port is positioned at a restriction of the Venturi tube configuration. A second sensor port extends through the cylinder head to the EGR crossover tube. The second sensor port is positioned proximate the first end. A differential pressure sensor includes a first pressure sensor positioned in the first sensor port and a second pressure sensor positioned in the second sensor port.