公开(公告)号：US20160153415A1

公开(公告)日：2016-06-02

申请号：US15015581

申请日：2016-02-04

Applicant: Delavan Inc

Inventor： Neal A. Thomson ,  Douglas Westlake ,  Travis R. Burke

IPC: F02M61/08 ,  F16K15/06

CPC classification number: F02M61/08 ,  F16K15/063 ,  F23N1/007 ,  F23N2035/24 ,  F23R3/283 ,  F23R2900/00012 ,  Y10T137/7838 ,  Y10T137/7925

Abstract: A valve assembly for a fuel injector that includes a sleeve member having an interior chamber, a piston member supported for movement within the interior chamber of the sleeve member and separating an upstream pressure side of the valve assembly from a downstream pressure side of the valve assembly, and a dynamic sealing device mounted to one of the sleeve member and the piston member for sealingly isolating the upstream pressure side of the valve assembly from the downstream pressure side of the valve assembly. The dynamic sealing assembly includes a PTFE seal member having a generally C-shaped cross-section defining an internal cavity having an opening about the outer periphery thereof the seal member, and a helical spring disposed within the internal cavity of the seal member for providing a constant sealing force to the seal member. The dynamic sealing device is positioned in the valve assembly so that the opening of the internal cavity of the seal member faces away from the upstream pressure side of the valve assembly and towards the downstream pressure side of the valve assembly.

Abstract translation: 一种用于燃料喷射器的阀组件，其包括具有内部腔室的套筒构件，活塞构件，其被支撑用于在套筒构件的内部腔室内移动，并将阀组件的上游压力侧与阀组件的下游压力侧分离 以及安装到套筒构件和活塞构件中的一个的动态密封装置，用于将阀组件的上游压力侧与阀组件的下游压力侧密封隔离。 该动态密封组件包括PTFE密封件，该PTFE密封件具有大体上C形的横截面，其限定了具有围绕其密封件的外周的开口的内腔，以及设置在密封件的内腔内的螺旋弹簧， 对密封件恒定的密封力。 动态密封装置定位在阀组件中，使得密封构件的内腔的开口面向离开阀组件的上游压力侧并朝向阀组件的下游压力侧。

公开(公告)号：US20180238548A1

公开(公告)日：2018-08-23

申请号：US15439014

申请日：2017-02-22

Applicant: Delavan Inc

Inventor： Philip E. O. Buelow ,  Andy W. Tibbs ,  Steven L. Smith ,  David H. Bretz ,  Travis R. Burke

IPC: F23R3/28

CPC classification number: F23R3/283 ,  F23D11/24 ,  F23D2204/10 ,  F23R3/14 ,  F23R3/28 ,  F23R3/36 ,  F23R2900/00004

Abstract: A method of injecting fuel in a gas turbine engine includes injecting gaseous fuel from a gaseous fuel circuit of an injector in a first mode, wherein flow of gaseous fuel from the gaseous fuel circuit constricts air flow from an air circuit. The method includes injecting liquid fuel from a liquid fuel circuit in a second mode, idling flow in the gaseous fuel circuit and flowing air through the air circuit for passive purge to prevent liquid fuel from migrating into the gaseous fuel circuit. The method includes injecting a gaseous fuel that lies within a range of different Wobbe Index values, wherein regardless of where the gaseous fuel falls in the range, it does not prevent operation in the first and second modes as described above.