公开(公告)号：US11725605B2

公开(公告)日：2023-08-15

申请号：US17803486

申请日：2022-07-28

Applicant: Cummins Inc.

Inventor： Dennis King Chan ,  William Ryan Dougherty ,  Jeffrey D. Jones ,  Andrew P. Perr ,  Andrew Guy Kitchen ,  Philipe F. Saad ,  Akintomide K. Akinola ,  Rick Vaughan Lewis, Jr.

IPC: F02F1/42 ,  F02F7/00 ,  F02F1/24 ,  F02F11/00

CPC classification number: F02F7/0021 ,  F02F1/24 ,  F02F11/002 ,  F02F2007/0041

Abstract: A cylinder head [20, 120] mountable onto a cylinder block [16] of an engine [10] is disclosed. The cylinder head [20, 120] includes at least one fastener boss [28, 128] configured for receiving a fastener [24], and the cylinder head [20, 120] is securely fastened onto the cylinder block [16] of the engine [10] by the fastener [24]. A boss cutout [30, 130] is formed on a lower portion of the at least one fastener boss [28, 128] that abuts the cylinder block [16] such that a contact pressure balance of sealing pressures around the cylinder block [16] is evenly distributed.

公开(公告)号：US11614027B2

公开(公告)日：2023-03-28

申请号：US16680921

申请日：2019-11-12

Applicant: Cummins Inc.

Inventor： Alan C. Anderson ,  William Marshall Cover ,  Xu Han ,  Nicholas James Welch ,  David Guillermo Gonzalez Medina ,  Xiao Qin ,  Andrew Guy Kitchen ,  Daniel J. O'Connor ,  Benjamín L. Olivas

IPC: F02B19/08 ,  F02B19/18

Abstract: A combustion pre-chamber assembly includes pre-chamber device body defining an annular plenum that is in fluid communication with the at least one bore that extends through the spark plug shell. The annular plenum is also in communication with at least one purging passage that extends from the annular plenum to an end surface of the pre-chamber device body. Residual exhaust gases in the annular volume of the spark plug are purged by fresh charge flow from the main combustion chamber as the piston approaches top dead center. The fresh charge flow that is provided to the annular plenum through the at least one purging passage and into the annular volume of the spark plug through the at least one bore through the spark plug shell.

公开(公告)号：US20170152820A1

公开(公告)日：2017-06-01

申请号：US15429105

申请日：2017-02-09

Applicant: CUMMINS INC.

Inventor： Pallav Scot Jha ,  Axel Zur Loye ,  Joseph Scot Roederer ,  Steven L. Leffler ,  John A. Rennekamp ,  Amit A. Kulkarni ,  Peter Vinson Woon ,  Andrew Guy Kitchen

IPC: F02M35/116

CPC classification number: F02M35/116 ,  F02B31/04 ,  F02B75/02 ,  F02B75/22 ,  F02F1/4242 ,  F02M35/10111 ,  F02M35/10262 ,  F02M35/1034 ,  F02M35/1045 ,  Y02T10/146

Abstract: An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, charge motion consistency is improved between engine cylinders and between the left bank and the right bank, thereby improving the consistency of combustion and power output, improving efficiency and reducing emissions (e.g., decreased particulate emissions (also described as smoke), hydrocarbon emissions, and NOx emissions), and further including an improved knock margin, improved fuel economy, wider rich and lean limits, etc.