公开(公告)号：US06298833B1

公开(公告)日：2001-10-09

申请号：US09545391

申请日：2000-04-07

申请人： Brad Douville ,  Stephen D. Noble ,  S. Michael Baker ,  Minh Tran ,  Alain Touchette

发明人： Brad Douville ,  Stephen D. Noble ,  S. Michael Baker ,  Minh Tran ,  Alain Touchette

IPC分类号： F02B4300

CPC分类号： F02D19/10 ,  F02D19/0678 ,  F02D19/0684 ,  F02D19/0689 ,  F02D19/0694 ,  F02M21/0251 ,  F02M21/0263 ,  F02M43/00 ,  F02M43/04 ,  F02M47/046 ,  F02M61/16 ,  Y02T10/32 ,  Y02T10/36

摘要： A dynamic fluid sealing system for a fuel injection valve employs sealing-fluid to separate a gaseous fuel and a second fluid in the fuel injection valve, thereby preventing leakage of the gaseous fuel into the second fluid. A pressure-balancing system, which includes a pressure-balancing device, reduces the pressure differential between the sealing-fluid and the gaseous fuel used in the injection valve. At the same time, the pressure balancing system dynamically balances the sealing-fluid pressure such that the sealing-fluid pressure is equal to or slightly greater than the pressure of the gaseous fuel within the injection valve. The pressure differential between the gaseous fuel and the sealing-fluid may be maintained throughout the operating range of engine speeds, engine loads, and fuel cut-off conditions so as to prevent leakage of compressible gaseous fuel into the second fluid. The reduced pressure differential between the gaseous fuel and the sealing-fluid also reduces leakage of sealing-fluid into the gaseous fuel.

摘要翻译： 用于燃料喷射阀的动态流体密封系统使用密封流体来分离燃料喷射阀中的气体燃料和第二流体，从而防止气体燃料泄漏到第二流体中。 包括压力平衡装置的压力平衡系统降低了密封流体和喷射阀中使用的气体燃料之间的压力差。 同时，压力平衡系统动态平衡密封流体压力，使得密封流体压力等于或略大于喷射阀内的气体燃料的压力。 气体燃料和密封流体之间的压差可以在发动机转速，发动机负荷和燃料切断条件的整个运行范围内保持，以防止可压缩的气体燃料泄漏到第二流体中。 气体燃料和密封流体之间的减小的压力差也减少了密封流体进入气体燃料的泄漏。

公开(公告)号：US5996558A

公开(公告)日：1999-12-07

申请号：US75060

申请日：1998-05-08

申请人： Patric Ouellette ,  Brad Douville ,  Alain Touchette ,  Philip G. Hill ,  K. Bruce Hodgins

发明人： Patric Ouellette ,  Brad Douville ,  Alain Touchette ,  Philip G. Hill ,  K. Bruce Hodgins

IPC分类号： F02D19/10 ,  F02M21/02 ,  F02M43/00 ,  F02M43/04 ,  F02M47/04 ,  F02B3/00 ,  F02M37/04

CPC分类号： F02M21/0263 ,  F02D19/0689 ,  F02D19/0694 ,  F02D19/10 ,  F02M21/0251 ,  F02M21/0269 ,  F02M21/0275 ,  F02M43/00 ,  F02M43/04 ,  F02M47/046 ,  F02D19/066 ,  Y02T10/32 ,  Y02T10/36

摘要： This invention relates to a novel hydraulically actuated fuel injector for an internal combustion engine. More particularly, the application pertains to a hydraulically actuated gaseous injector for injecting main fuel and optional pilot fuel into an internal combustion engine at different times at controlled pressure. A hydraulically actuated fuel injector for a piston displacement engine comprising: (a) an injector which is actuated by an actuator means and injects fuel into the engine at predetermined times; (b) a means for introducing hydraulic oil into said injector; (c) means for pressurizing said hydraulic oil; (d) means for opening a fuel inlet means and injecting the fuel into the engine upon the pressure of the hydraulic oil reaching a predetermined level; and (e) a means for preventing the pressure of the hydraulic oil from rising above the predetermined level.

摘要翻译： 本发明涉及一种用于内燃机的新型液压致动燃料喷射器。 更具体地，本申请涉及一种液压致动的气体喷射器，用于在受控压力下在不同时间将主燃料和可选的引燃燃料喷射到内燃机中。 一种用于活塞排量发动机的液压致动燃料喷射器，包括：（a）由致动器装置致动并且在预定时间将燃料喷射到发动机中的喷射器; （b）用于将液压油引入所述喷射器的装置; （c）用于对所述液压油加压的装置; （d）用于打开燃料入口装置并在液压油的压力达到预定水平时将燃料喷射到发动机中的装置; 和（e）用于防止液压油的压力升高到高于预定水平的装置。

公开(公告)号：US5832906A

公开(公告)日：1998-11-10

申请号：US003407

申请日：1998-01-06

申请人： Brad Douville ,  Alain Touchette ,  Philip G. Hill ,  Adrian J. Post ,  Mark A. Epp

发明人： Brad Douville ,  Alain Touchette ,  Philip G. Hill ,  Adrian J. Post ,  Mark A. Epp

IPC分类号： F02M21/02 ,  F04B35/01 ,  F17C5/06 ,  F02M21/04

CPC分类号： F02D19/022 ,  F02D19/027 ,  F02M21/0245 ,  F17C5/06 ,  F17C2205/0326 ,  F17C2205/0335 ,  F17C2205/0364 ,  F17C2221/032 ,  F17C2223/013 ,  F17C2223/031 ,  F17C2225/0123 ,  F17C2225/036 ,  F17C2227/0164 ,  F17C2227/0337 ,  F17C2250/032 ,  F17C2250/043 ,  F17C2250/0443 ,  F17C2250/072 ,  F17C2260/026 ,  F17C2265/066 ,  F17C2270/0168 ,  Y02T10/32 ,  Y02T10/36

摘要： The invention relates to an apparatus and method for supplying high pressure gaseous fuel from a storage vessel to a vehicle's internal combustion engine. More particularly, the invention is a fuel supply system with three main components: the storage vessel; an intensifier; and, an accumulator vessel. Fuel passages connect each one of the components directly with the other two components. The intensifier has a plurality of compression chambers and one of the compression chambers can be by-passed when the intensifier is operating in a low capacity mode, depending upon the pressure in the storage vessel. The intensifier operates continuously. When no fuel compression is required, the intensifier runs in an idle mode with the respective inlets and outlets of the compression chambers connected by fuel passages, thus preventing any fuel compression. The loading to the intensifier actuating mechanism is balanced in all modes of operation.

摘要翻译： 本发明涉及一种用于将高压气体燃料从储存容器供应到车辆内燃机的装置和方法。 更具体地，本发明是一种具有三个主要部件的燃料供应系统：储存容器; 增强器 和蓄能器容器。 燃料通道将每个部件直接连接到另外两个部件。 增压器具有多个压缩室，并且当增压器以低容量模式运行时，压缩室中的一个可以被旁路，这取决于存储容器中的压力。 增压器连续运行。 当不需要燃料压缩时，增压器以空转模式运行，压缩室的相应入口和出口通过燃料通道连接，从而防止任何燃料压缩。 在所有操作模式下，对增压器致动机构的负载均衡。

公开(公告)号：US06202601B1

公开(公告)日：2001-03-20

申请号：US09503034

申请日：2000-02-11

申请人： Patric Ouellette ,  Brad Douville

发明人： Patric Ouellette ,  Brad Douville

IPC分类号： F02M2102

CPC分类号： F02B23/0669 ,  F02B1/12 ,  F02B7/08 ,  F02B23/0621 ,  F02B69/04 ,  F02B2075/025 ,  F02D19/061 ,  F02D19/0623 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/0694 ,  F02D19/10 ,  F02D41/0027 ,  F02D41/3035 ,  F02D41/402 ,  F02D41/403 ,  F02D2041/389 ,  F02M21/0275 ,  Y02T10/125 ,  Y02T10/32 ,  Y02T10/36 ,  Y02T10/44

摘要： Two different fuels are injected into the combustion chamber of an internal combustion engine. A main fuel is ignited by a pilot fuel that is more readily flammable than the main fuel. According to the method, load conditions on the engine are monitored and sets of conditions are defined to constitute low load conditions and high load conditions. Distinct operating modes are defined for each set of load conditions. Under low load conditions, a homogeneous mixture of main fuel and air is too lean to be flammable; consequently, the main fuel is injected at high pressure immediately following injection of the pilot fuel. Under high load conditions, fuel is injected in three stages. In the first stage, the main fuel is injected during the intake stroke or early in the compression stroke to form a substantially homogenous mixture of main fuel and air. However, the risk of knocking limits the quantity of main fuel that can be introduced in the first stage. In the second stage, the pilot fuel is injected near top dead center and ignites the homogenous mixture of fuel and air. Since the amount of fuel that could be injected in the first stage was limited by the knock limit, an additional quantity of main fuel is injected in a third stage during the power stroke.

摘要翻译： 两种不同的燃料被注入到内燃机的燃烧室中。 主燃料被主燃料点燃，燃油比主燃料更容易燃烧。 根据该方法，监测发动机的负载条件，并且定义一组条件以构成低负载条件和高负载条件。 为每组负载条件定义不同的工作模式。 在低负载条件下，主要燃料和空气的均匀混合物太薄而不易燃; 因此，主燃料在喷射引燃燃料之后立即以高压喷射。 在高负载条件下，燃油分三个阶段注入。 在第一阶段，主要燃料在进气冲程期间或在压缩冲程早期喷射，以形成主要燃料和空气的基本均匀的混合物。 然而，爆震的风险限制了可在第一阶段引进的主要燃料的数量。 在第二阶段，先导燃料在上死点附近喷射，并点燃燃料和空气的均质混合物。 由于可以在第一阶段中喷射的燃料的量受到爆震极限的限制，所以在动力冲程期间，在第三阶段将附加量的主燃料喷射。