公开(公告)号：US10851753B2

公开(公告)日：2020-12-01

申请号：US15335066

申请日：2016-10-26

申请人： Caterpillar Inc.

发明人： Graeme Mawhinney ,  Alan R. Stockner ,  Paul Stark ,  David Mack

IPC分类号： F02M65/00 ,  F02M61/02

摘要： A fuel injector is provided which has a valve member, a valve member guide and a spring chamber. Discharge of fuel out of a fuel injector outlet is controlled by movement of the valve member within a bore of the valve member guide. The spring chamber contains a biasing member, which is a compression spring, and which biases the valve member into contact with a valve seat when in a closed configuration. The fuel supply passage is provided, which by-passes the spring chamber, to direct a flow of the fuel to an outlet chamber of the fuel injector, and the cleaning fluid supply passage is provided to supply a pressurized cleaning fluid to a second end of the bore to restrict leakage of the fuel from the outlet chamber towards the second end of the bore along a clearance extending between the valve member and the valve member guide.

公开(公告)号：US09689364B2

公开(公告)日：2017-06-27

申请号：US14816598

申请日：2015-08-03

申请人： Caterpillar Inc.

发明人： David Mack ,  Alan R. Stockner ,  John Unes

IPC分类号： F02M63/02 ,  F16K15/02 ,  F16K24/04 ,  F16K27/02

CPC分类号： F02M63/023 ,  F02M59/462 ,  F02M63/0295 ,  F16K15/025 ,  F16K15/026 ,  F16K24/04 ,  F16K27/0209

摘要： A valve assembly for a fuel pump is disclosed. In certain aspect, the valve assembly includes a housing defining a valve chamber, a valve inlet in fluid communication with the valve chamber, a valve outlet in fluid communication with the valve chamber, a valve seat; a valve body movably disposed within the valve chamber, a retainer sealingly engaging the housing and defining a cavity between the base portion of the valve body and the retainer, wherein the retainer comprises one or more control orifices formed therein and configured to provide fluid communication to the cavity to regulate a position of the valve body based on at least a pressure difference between the valve chamber and the cavity, and a spring member disposed between the retainer and the valve body, wherein the spring member is configured to bias the valve body.

公开(公告)号：US20170122280A1

公开(公告)日：2017-05-04

申请号：US15335066

申请日：2016-10-26

申请人： Caterpillar Inc.

发明人： Graeme Mawhinney ,  Alan R. Stockner ,  Paul Stark ,  David Mack

IPC分类号： F02M65/00 ,  F02M61/04 ,  F02M63/00 ,  F02B77/04

CPC分类号： F02M65/008 ,  F02B77/04 ,  F02M61/02 ,  F02M61/04 ,  F02M63/0017 ,  F02M65/007

摘要： A fuel injector (1) is provided which comprises a valve member (11), a valve member guide (12) and a spring chamber (40). Discharge of fuel out of a fuel injector outlet (21) is controlled by movement of the valve member (11) within a bore (23) of the valve member guide (12). The spring chamber (40) contains a biasing member (50), for example a compression spring, which biases the valve member (11) into contact with a valve seat (20) when in a closed configuration.A fuel supply passage (80) is provided, which by-passes the spring chamber (40), to direct a flow of the fuel to an outlet chamber (22) of the fuel injector (1) and a cleaning fluid supply passage (90) is provided to supply a pressurised cleaning fluid to a second end (25) of the bore (23) to restrict leakage of the fuel from the outlet chamber (22) towards the second end (25) of the bore (23) along a clearance (29) extending between the valve member (11) and the valve member guide (12).

公开(公告)号：US20170037824A1

公开(公告)日：2017-02-09

申请号：US14816598

申请日：2015-08-03

申请人： Caterpillar Inc.

发明人： David Mack ,  Alan R. Stockner ,  John Unes

IPC分类号： F02M63/02 ,  F16K27/02 ,  F16K24/04 ,  F16K15/02

CPC分类号： F02M63/023 ,  F02M59/462 ,  F02M63/0295 ,  F16K15/025 ,  F16K15/026 ,  F16K24/04 ,  F16K27/0209

摘要： A valve assembly for a fuel pump is disclosed. In certain aspect, the valve assembly includes a housing defining a valve chamber, a valve inlet in fluid communication with the valve chamber, a valve outlet in fluid communication with the valve chamber, a valve seat; a valve body movably disposed within the valve chamber, a retainer sealingly engaging the housing and defining a cavity between the base portion of the valve body and the retainer, wherein the retainer comprises one or more control orifices formed therein and configured to provide fluid communication to the cavity to regulate a position of the valve body based on at least a pressure difference between the valve chamber and the cavity, and a spring member disposed between the retainer and the valve body, wherein the spring member is configured to bias the valve body.

摘要翻译： 公开了一种用于燃料泵的阀组件。 在某些方面，阀组件包括限定阀室的壳体，与阀室流体连通的阀入口，与阀室流体连通的阀出口，阀座; 可移动地设置在阀室内的阀体，保持器密封地接合壳体并且在阀体的基部与保持器之间限定空腔，其中保持器包括形成在其中的一个或多个控制孔，并且构造成提供流体连通 所述空腔至少基于所述阀室和所述空腔之间的压力差来调节所述阀体的位置;以及弹簧构件，其设置在所述保持器和所述阀体之间，其中所述弹簧构件构造成偏置所述阀体。