公开(公告)号：WO2018106924A1

公开(公告)日：2018-06-14

申请号：PCT/US2017/065123

申请日：2017-12-07

Applicant: CUMMINS INC.

Inventor： ANDERSON, Alan C. ,  COVER, William Marshall ,  HAN, Xu ,  OLIVAS, Benjamin L. ,  O'CONNOR, Daniel J. ,  KITCHEN, Andrew Guy ,  MEDINA, David Guillermo Gonzalez ,  QIN, Xiao ,  WELCH, Nicholas James

IPC: F02P13/00 ,  F02B19/10 ,  F02B19/12 ,  H01T13/54

Abstract: A spark plug is disclosed that includes at least one bore extending through a shell of the spark plug in order to form a passageway between an annular volume around the spark plug insulator nose and a pre-chamber volume of a pre-chamber device, thus directing a purge of exhaust gases trapped in the annular volume to a space formed by the exterior of the spark plug body and the interior of the pre-chamber device.

公开(公告)号：WO2022236260A1

公开(公告)日：2022-11-10

申请号：PCT/US2022/072073

申请日：2022-05-03

Applicant: CUMMINS INC.

Inventor： WELCH, Nicholas James ,  FLESSNER, Matthew D.

IPC: F01M1/02 ,  F01M1/16

Abstract: A lubrication system for an internal combustion engine includes a fluid flow control device at an outlet side of the pump that regulates pressure conditions at the outlet side of the pump upstream of the lubrication circuit in the engine. The fluid flow control device is located in a recirculation path, and opens in response to a fluid pressure at the outlet of the pump exceeding a first threshold to allow the fluid to pass from the outlet side of the pump back to an inlet side of the pump. The recirculation path includes a tuning device that maintains the fluid pressure at engine speeds above the first threshold. In response to engine speeds above a second threshold, the tuning device restricts fluid flow in the recirculation path so that the fluid pressure in the fluid flow path increases.

公开(公告)号：WO2020068967A1

公开(公告)日：2020-04-02

申请号：PCT/US2019/052935

申请日：2019-09-25

Applicant: CUMMINS INC.

Inventor： MEDINA, David Guillermo Gonzalez ,  COVER, William Marshall ,  HAN, Xu ,  KITCHEN, Andrew Guy ,  O'CONNOR, Daniel J. ,  ANDERSON, Alan C. ,  WELCH, Nicholas James ,  SUN, Jisang

IPC: H01T1/00 ,  H01T13/00 ,  H01T13/20 ,  H01T13/46 ,  F02P9/00

Abstract: Spark plugs are disclosed that include electrode arrangements to improve the charge flow into and out of the annular volume around the insulator nose and a pre-chamber volume of a pre-chamber device, thus directing a purge of exhaust gases trapped in the annular volume to a space formed by the exterior of the spark plug body and the interior of the pre-chamber device.

公开(公告)号：WO2019136045A1

公开(公告)日：2019-07-11

申请号：PCT/US2019/012023

申请日：2019-01-02

Applicant: CUMMINS INC.

Inventor： HAN, Xu ,  QIN, Xiao ,  ANDERSON, Alan C. ,  WELCH, Nicholas James

IPC: F02B19/10 ,  F02B19/02 ,  F02B19/08 ,  F02B19/12 ,  F02B19/16 ,  F02P13/00

Abstract: A combustion pre-chamber device for a spark ignition internal combustion engine is configured to engage a spark plug and be mounted to a cylinder head in communication with a combustion chamber of a cylinder of the engine. The combustion pre-chamber device includes any one or combination of a number of features to improve operating effectiveness, including extending the combustion operating range by improving cooling and optimizing the flow field inside the combustion pre-chamber device.