公开(公告)号：WO2016197252A1

公开(公告)日：2016-12-15

申请号：PCT/CA2016/050667

申请日：2016-06-10

Applicant: WESTPORT POWER INC.

Inventor： MUMFORD, David K. ,  PUZZUOLI, Derek ,  HAAS, Jordan C. ,  BROWN, Wesley A. ,  WOO, Victor ,  STEFFEN, Joshua W.

IPC: G05D16/20 ,  F02D41/38 ,  F02M43/00

CPC classification number: F02D41/0025 ,  F02D19/0605 ,  F02D19/0628 ,  F02D19/0642 ,  F02D19/0678 ,  F02D41/0027 ,  F02M43/00 ,  G05D16/20 ,  Y02T10/36

Abstract: 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.

Abstract translation: 公开了一种用于控制两个可变压力流体的输送以在最终使用装置内的两种流体之间保持压力偏压的流体控制系统和方法。 该系统采用主动控制的排气阀，其可以在优选实施例中集成到流体控制模块中，并且当确定的压力差异反转超过预定的阈值压力差异反转时被致动到打开位置以减小第一流体供应管线中的流体压力 。 所公开的系统在高压直喷（HPDI）多燃料发动机系统中特别有用，其中第一流体是气体燃料，第二流体是液体燃料。 流体控制系统及其控制方法提供改进的排气控制以及保护系统部件免受高背压和流体的交叉污染。

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

Applicant: Westport Power Inc.

Inventor： MUMFORD, David K. ,  PUZZUOLI, Derek ,  HAAS, Jordan C. ,  BROWN, Wesley A. ,  WOO, Victor ,  STEFFEN, Joshua W.

IPC: G05D16/20 ,  F02D41/38 ,  F02M43/00

CPC classification number: F02D19/0605 ,  F02D19/0628 ,  F02D19/0642 ,  F02D19/0678 ,  F02D41/0025 ,  F02D41/0027 ,  F02M43/00 ,  F02M43/02 ,  F02M43/04 ,  G05D16/20 ,  G05D16/2026 ,  Y02T10/36

Abstract: 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.