Invention Grant
- Patent Title: Valve assembly
- Patent Title (中): 阀组件
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Application No.: US11981876Application Date: 2007-11-01
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Publication No.: US08287256B2Publication Date: 2012-10-16
- Inventor: Scott F. Shafer , Christopher R. Jones
- Applicant: Scott F. Shafer , Christopher R. Jones
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Miller, Matthias & Hull
- Main IPC: F04B7/00
- IPC: F04B7/00 ; F04B39/08 ; F16K31/02

Abstract:
Although modern diesel fuel formulations are intended to reduce emissions of diesel engines, at least some of those modern fuels tend to have relatively low lubricity levels. The control valve assemblies described herein help to minimize any increased wear that would otherwise result from the use of such low lubricity fuels by providing a valve element, a valve guide, and an insert. The valve element is received within the valve guide and is moveable between an open position and a closed position. The insert forms a first sealed interface and a second sealed interface with the valve element and the valve guide. When the valve element is in the closed position, both of the first sealed interface and the second sealed interface are engaged. When the valve element is in the open position, only one of the first sealed interface and the second sealed interface is engaged.
Public/Granted literature
- US20090114292A1 Valve assembly Public/Granted day:2009-05-07
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