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

IPC: F02F1/10 ,  F02F7/00 ,  F02F1/42 ,  F02F11/00

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：US12044191B2

公开(公告)日：2024-07-23

申请号：US18364001

申请日：2023-08-02

Applicant: Cummins Inc.

Inventor： David J. Eckroth

IPC: F02F1/16

CPC classification number: F02F1/16

Abstract: An internal combustion engine with an engine block with at least one cylinder cavity housing a cylinder liner. The cylinder liner includes at least one aperture in a wall of the cylinder liner that is aligned with one of an intake port or an exhaust port in the engine block.

公开(公告)号：US20230399994A1

公开(公告)日：2023-12-14

申请号：US18034237

申请日：2021-10-08

Applicant: Cummins Inc.

Inventor： Robert G. Sperry ,  Jordan E. Kelleher ,  Jeffrey A. Wheitner ,  Jeffrey D. Olmstead ,  Myron T. Rickard ,  David J. Eckroth

IPC: F02F1/22 ,  F02B75/28

CPC classification number: F02F1/22 ,  F02B2075/025 ,  F02F2200/06 ,  F02B75/28

Abstract: A method for finishing at least one port within a cylinder of a two-stroke engine, comprising tracing a curvature of an existing port hole for the at least one port using a force sensing tool, wherein forming an engine block for a two-stroke engine, comprising: casting the engine block, wherein the cast engine block includes at least one intake port and at least one exhaust port; rough machining a cylinder of the engine block, wherein at least one of the at least one intake port and the at least one exhaust port is positioned along a wall of the cylinder and both of the at least one intake port and the at least one exhaust port are fluidly coupled to the cylinder; and finishing an edge of at least one of the at least one intake port and the at least one exhaust port to provide a smooth surface.

公开(公告)号：US12129810B2

公开(公告)日：2024-10-29

申请号：US18034237

申请日：2021-10-08

Applicant: Cummins Inc.

Inventor： Robert G. Sperry ,  Jordan E. Kelleher ,  Jeffrey A. Wheitner ,  Jeffrey D. Olmstead ,  Myron T. Rickard ,  David J. Eckroth

IPC: F02F1/22 ,  F02B75/28 ,  F02B75/02

CPC classification number: F02F1/22 ,  F02B75/28 ,  F02B2075/025 ,  F02F2200/06

Abstract: A method for finishing at least one port within a cylinder of a two-stroke engine, comprising tracing a curvature of an existing port hole for the at least one port using a force sensing tool, wherein forming an engine block for a two-stroke engine, comprising: casting the engine block, wherein the cast engine block includes at least one intake port and at least one exhaust port; rough machining a cylinder of the engine block, wherein at least one of the at least one intake port and the at least one exhaust port is positioned along a wall of the cylinder and both of the at least one intake port and the at least one exhaust port are fluidly coupled to the cylinder; and finishing an edge of at least one of the at least one intake port and the at least one exhaust port to provide a smooth surface.

公开(公告)号：US20200040839A1

公开(公告)日：2020-02-06

申请号：US16050596

申请日：2018-07-31

Applicant: CUMMINS INC.

Inventor： David M. Barnes ,  David J. Eckroth

IPC: F02F1/10 ,  F02F7/00 ,  F02F1/42

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.