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1.发明公开
公开(公告)号：EP3910181A1
公开(公告)日：2021-11-17
申请号：EP21182050.1
申请日：2015-12-11
申请人： Westport Power Inc.
发明人： SINGH, Ashish , TOUCHETTE, Alain M. J. , MUMFORD, David K. , Li, Guowei , WICKSTONE, Michael C. , DICKEN, Christopher J. B.
摘要： An improved body defining a restricted fluid flow passage in a fuel supply system for delivering a gaseous fuel to an internal combustion engine. The body is formed for installation between and fluidly connecting a gaseous fuel supply conduit and a gaseous fuel flow passage that defines a predetermined volume between the restricted fluid flow passage and a nozzle chamber of a fuel injector from which the gaseous fuel is injected into the internal combustion engine. The restricted fluid flow passage has the smallest effective flow area between the gaseous fuel supply conduit and the nozzle chamber. The restricted fluid flow passage is located a predetermined distance from an injection valve seal within the fuel injector. The predetermined distance is calculated as a function of the speed of sound in the gaseous fuel and an opened time of the fuel injector.
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公开(公告)号：EP3426958A1
公开(公告)日：2019-01-16
申请号：EP17762377.4
申请日：2017-03-07
申请人： Westport Power Inc.
发明人： MUMFORD, David K.
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公开(公告)号：EP2864622A1
公开(公告)日：2015-04-29
申请号：EP13806839.0
申请日：2013-06-03
申请人： Westport Power Inc.
CPC分类号： F02D19/024 , F02D19/0647 , F02M21/0254 , F02M21/0263 , F02M21/0269 , F02M43/04 , F02M51/0607 , F02M51/0632 , F02M61/04 , F02M61/08 , F02M61/10 , F02M61/161 , F02M2200/50 , Y02T10/32 , Y02T10/36
摘要： A fuel injection valve is provided for injecting a fuel into the combustion chamber or into the injection port of an internal combustion engine, the valve being actuated by an actuator assembly that comprises a small displacement actuator and a large displacement actuator. The method comprises commanding the small displacement actuator to move the valve member to a first open position corresponding to a first flow area and commanding the large displacement actuator to move the valve member to a second open position corresponding to a second flow area that is larger than the first flow area such that the ratio between the second flow area and the first flow area is at least 15:1. The fuel injection valve can also be operated to alternatively inject two different fuels, one of the fuels being a gaseous fuel and the other one being a liquid fuel.
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5.发明公开HIGH PRESSURE FLUID CONTROL SYSTEM AND METHOD OF CONTROLLING PRESSURE BIAS IN AN END USE DEVICE 审中-公开高压流体控制系统和在最终用途装置中控制压力偏差的方法
公开(公告)号：EP3308237A1
公开(公告)日：2018-04-18
申请号：EP16806483.0
申请日：2016-06-10
申请人： Westport Power Inc.
发明人： MUMFORD, David K. , PUZZUOLI, Derek , HAAS, Jordan C. , BROWN, Wesley A. , WOO, Victor , STEFFEN, Joshua W.
CPC分类号： F02D19/0605 , F02D19/0628 , F02D19/0642 , F02D19/0678 , F02D41/0025 , F02D41/0027 , F02M43/00 , F02M43/02 , F02M43/04 , G05D16/20 , G05D16/2026 , Y02T10/36
摘要： Disclosed are a fluid control system and method for controlling delivery of two variable pressure fluids to maintain a pressure bias between the two fluids within an end use device. The system employs an actively controlled vent valve which can be integrated into a fluid control module in preferred embodiments and is actuated to an open position to decrease fluid pressure in a first fluid supply line when a determined pressure differential reversal exceeds a predetermined threshold pressure differential reversal. The disclosed system is particularly useful in a high pressure direct injection (HPDI) multi-fueled engine system where the first fluid is a gaseous fuel and the second fluid is a liquid fuel. The fluid control system and method of controlling it provide for improved control of venting along with protecting system components from high back pressure and cross contamination of fluids.
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公开(公告)号：EP3268600A1
公开(公告)日：2018-01-17
申请号：EP16764083.8
申请日：2016-03-11
申请人： Westport Power Inc.
摘要： Hydraulically actuated gaseous fuel injectors required a relatively small pressure bias between hydraulic fluid and gaseous fuel to be able to open and to reduce hydraulic fluid contamination of the gaseous fuel. An improved hydraulically actuated gaseous fuel injector includes an injection valve in fluid communication with a gaseous fuel inlet and includes a valve member reciprocatable within a fuel injector body between a closed position and an open position. There is a lift chamber in fluid communication with a hydraulic fluid inlet such that hydraulic fluid pressure in the lift chamber contributes to an opening force applied to the valve member. A control chamber is in fluid communication with the hydraulic fluid inlet such that hydraulic fluid pressure in the control chamber contributes to a closing force applied to the valve member. A control valve is operable to reduce hydraulic fluid pressure in the control chamber such that the opening force is greater than the closing force and the valve member moves to the open position.
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7.发明公开APPARATUS FOR REDUCING PRESSURE PULSATIONS IN A GASEOUS FUELLED INTERNAL COMBUSTION ENGINE 审中-公开用于减少气体燃料内燃机中的压力脉冲的装置
公开(公告)号：EP3230576A1
公开(公告)日：2017-10-18
申请号：EP15867340.0
申请日：2015-12-11
申请人： Westport Power Inc.
发明人： SINGH, Ashish , TOUCHETTE, Alain M. J. , MUMFORD, David K. , LI, Guowei , WICKSTONE, Michael C. , DICKEN, Christopher J. B.
CPC分类号： F02M21/0239 , F02D19/0689 , F02D19/0694 , F02D19/10 , F02M21/0263 , F02M43/04 , F02M2200/315 , Y02T10/32 , Y02T10/36
摘要： An improved body defining a restricted fluid flow passage in a fuel supply system for delivering a gaseous fuel to an internal combustion engine. The body is formed for installation between and fluidly connecting a gaseous fuel supply conduit and a gaseous fuel flow passage that defines a predetermined volume between the restricted fluid flow passage and a nozzle chamber of a fuel injector from which the gaseous fuel is injected into the internal combustion engine. The restricted fluid flow passage has the smallest effective flow area between the gaseous fuel supply conduit and the nozzle chamber. The restricted fluid flow passage is located a predetermined distance from an injection valve seal within the fuel injector. The predetermined distance is calculated as a function of the speed of sound in the gaseous fuel and an opened time of the fuel injector.
摘要翻译： 一种限定用于将气体燃料输送到内燃机的燃料供应系统中的限制流体流动通道的改进主体。 本体形成为用于在气体燃料供应导管和气体燃料流动通道之间安装并且流体连接，该气体燃料供应导管和气体燃料流动通道在限制流体流动通道和燃料喷射器的喷嘴腔室之间限定预定体积， 内燃机。 受限制的流体流动通道在气体燃料供应导管和喷嘴腔室之间具有最小的有效流动面积。 受限流体流动通道位于距燃料喷射器内的喷射阀密封件预定距离处。 预定距离作为气体燃料中的声速和燃料喷射器的打开时间的函数来计算。
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