公开(公告)号：US20180149125A1

公开(公告)日：2018-05-31

申请号：US15573527

申请日：2015-06-30

Applicant: CUMMINS INC.

Inventor： Darren Ting ,  Patrick M. Pierz

IPC: F02M53/04 ,  F02B19/12 ,  F02M57/06 ,  F01P3/02 ,  F01P3/16

CPC classification number: F02M53/046 ,  F01P3/02 ,  F01P3/16 ,  F01P2003/024 ,  F02B19/108 ,  F02B19/12 ,  F02B19/18 ,  F02B2019/006 ,  F02M21/0215 ,  F02M21/0278 ,  F02M53/043 ,  F02M57/06 ,  F02M61/14 ,  F02M2200/8061 ,  F02M2200/858 ,  F02M2200/9053 ,  Y02T10/125 ,  Y02T10/32

Abstract: An apparatus and method are disclosed for an injector assembly including an injector tip having a prechamber, such as a permanent, passive prechamber (PPPC), and a nozzle combustion shield (NCS) to mitigate pre-ignition events, such as knocking, caused by overheating of the prechamber. The NCS has a thermal conductivity greater than the injector tip. The NCS optionally includes a barrel forming a slip fit with the cylinder head bore and forming a press fit with the injector tip. The NCS also optionally includes a brim to form a combustion seal with a cylinder head. As the spark plug ignites a fuel charge in the prechamber, heat is absorbed into the injector tip, flows into the NCS barrel, out of the NCS brim, and into the cylinder head for cooling via a cooling jacket.

公开(公告)号：US10451014B2

公开(公告)日：2019-10-22

申请号：US15573527

申请日：2015-06-30

Applicant: CUMMINS INC.

Inventor： Darren Ting ,  Patrick M. Pierz

IPC: F02M53/04 ,  F02B19/12 ,  F02B19/18 ,  F02M21/02 ,  F02M61/14 ,  F01P3/02 ,  F01P3/16 ,  F02B19/10 ,  F02B19/00

Abstract: An apparatus and method are disclosed for an injector assembly including an injector tip having a prechamber, such as a permanent, passive prechamber (PPPC), and a nozzle combustion shield (NCS) to mitigate pre-ignition events, such as knocking, caused by overheating of the prechamber. The NCS has a thermal conductivity greater than the injector tip. The NCS optionally includes a barrel forming a slip fit with the cylinder head bore and forming a press fit with the injector tip. The NCS also optionally includes a brim to form a combustion seal with a cylinder head. As the spark plug ignites a fuel charge in the prechamber, heat is absorbed into the injector tip, flows into the NCS barrel, out of the NCS brim, and into the cylinder head for cooling via a cooling jacket.

公开(公告)号：US20160281613A1

公开(公告)日：2016-09-29

申请号：US15081493

申请日：2016-03-25

Applicant: Cummins Inc.

Inventor： Darren Ting ,  David M. Barnes

IPC: F02D13/04 ,  F01L13/06 ,  F01M9/10

CPC classification number: F02D13/04 ,  F01L1/053 ,  F01L1/18 ,  F01L1/181 ,  F01L13/06 ,  F01L2001/0537 ,  F01L2105/00 ,  F01M9/108

Abstract: A valve train assembly is provided, comprising an exhaust camshaft having an exhaust lobe and a brake lobe, an exhaust lever mounted adjacent the exhaust lobe, a brake lever mounted adjacent the brake lobe, wherein the exhaust lever is coupled to the brake lever to provide simultaneous movement of the exhaust lever and the brake lever in response to the exhaust lobe and independent movement of the brake lever in response to the brake lobe.

Abstract translation: 提供了一种气门机构组件，其包括具有排气凸轮和制动凸轮的排气凸轮轴，邻近排气凸轮安装的排气杆，邻近制动凸轮安装的制动杆，其中排气杆联接到制动杆以提供 响应于排气门，排气杆和制动杆的同时运动以及响应于制动凸轮的制动杆的独立运动。

公开(公告)号：US10024247B2

公开(公告)日：2018-07-17

申请号：US15081493

申请日：2016-03-25

Applicant: Cummins Inc.

Inventor： Darren Ting ,  David M. Barnes

IPC: F02D13/04 ,  F01L13/06 ,  F01M9/10 ,  F01L1/053 ,  F01L1/18

Abstract: A valve train assembly is provided, comprising an exhaust camshaft having an exhaust lobe and a brake lobe, an exhaust lever mounted adjacent the exhaust lobe, a brake lever mounted adjacent the brake lobe, wherein the exhaust lever is coupled to the brake lever to provide simultaneous movement of the exhaust lever and the brake lever in response to the exhaust lobe and independent movement of the brake lever in response to the brake lobe.

公开(公告)号：US20170138251A1

公开(公告)日：2017-05-18

申请号：US14939572

申请日：2015-11-12

Applicant: Cummins Inc.

Inventor： Atsuhiko Watanabe ,  Patrick M. Pierz ,  Darren Ting

IPC: F02B19/18 ,  F02B19/12

CPC classification number: F02B19/18 ,  F02B19/10 ,  F02B19/1004 ,  F02B19/1019 ,  F02B19/108 ,  F02B19/12 ,  F02P13/00 ,  F02P15/006 ,  Y02T10/125

Abstract: An engine includes a cylinder having an internal combustion chamber and extending longitudinally, a cylinder head coupled to the cylinder, and a fuel-fed pre-chamber positioned within a portion of the cylinder head. The pre-chamber includes a pre-chamber volume and plurality of nozzle holes extending from the pre-chamber volume. The engine also includes an ignition source positioned longitudinally above the pre-chamber volume and a locating member positioned on at least one of the pre-chamber and the cylinder head. The locating member is configured to position the pre-chamber in a predetermined orientation within the cylinder head.