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1. 发明申请

WO2017031598A1 DEPOSIT MITIGATION FOR GASEOUS FUEL INJECTORS 审中-公开
标题翻译：气体燃料喷射器的沉积缓解
公开(公告)号：WO2017031598A1
公开(公告)日：2017-03-02
申请号：PCT/CA2016/051013
申请日：2016-08-26
申请人： WESTPORT POWER INC.
发明人： SOLERI, Dominique J. , OUELLETTE, Patric , KARIMI SHARIF, Hamed
IPC分类号： F02D41/38 , F02B77/04 , F02D19/06 , F02M21/02 , F02M43/04 , F02M61/16 , F02M65/00
CPC分类号： F02D41/0027 , F02B77/04 , F02D19/0605 , F02D19/0623 , F02D19/0647 , F02D19/0689 , F02D19/0694 , F02D19/081 , F02D41/0025 , F02D41/008 , F02D41/22 , F02D41/401 , F02D2041/389 , F02M21/0248 , F02M43/04 , F02M65/008 , F02M2200/06 , F02M2200/46 , Y02T10/32 , Y02T10/36 , Y02T10/44
摘要： A method for deposit mitigation in a gaseous fuel injector that introduces a gaseous fuel through a gaseous fuel orifice directly into a combustion chamber of an internal combustion engine includes at least one of a) reducing the length of the gaseous fuel orifice by substantially between 10% to 50% of a previous length of a previous gaseous fuel orifice showing deposit accumulation above a predetermined threshold; b) providing the gaseous fuel orifice with an inwardly and substantially linearly tapering profile; c) determining deposit mitigation is needed; and performing at least one of the following deposit mitigation techniques i) increasing gaseous fuel injection pressure wherein deposit accumulation is reduced during fuel injection; and ii) decreasing gaseous fuel temperature wherein a rate of deposit accumulation is reduced; and d) injecting compressed air through the gaseous fuel orifice during shutdown of the internal combustion engine; whereby torque loss in the internal combustion engine due to deposit accumulation in the gaseous fuel orifice is reduced below a predetermined value.
摘要翻译：一种气态燃料喷射器中的沉积物缓解方法，其将通过气体燃料孔的气体燃料直接引入内燃机的燃烧室中，包括以下至少之一：a）将气体燃料孔的长度大致减小10％到之前的气体燃料孔口的先前长度的50％，其显示高于预定阈值的沉积物积聚; b）向气体燃料孔提供内向且基本线性渐缩的轮廓; c）需要确定减缓沉积物; 并执行以下沉积物缓解技术中的至少一种：i）增加气体燃料喷射压力，其中在燃料喷射期间沉积物积聚减少; 和ii）降低气体燃料温度，其中沉积物积聚速率降低; 以及d）在所述内燃机关闭期间，通过所述气体燃料孔喷射压缩空气; 由此由于气体燃料喷口中的沉积物积聚引起的内燃机中的扭矩损失降低到预定值以下。

2. 发明申请

WO2016191886A1 MULTI-FUEL ENGINE APPARATUS 审中-公开
标题翻译：多功能发动机装置
公开(公告)号：WO2016191886A1
公开(公告)日：2016-12-08
申请号：PCT/CA2016/050639
申请日：2016-06-03
申请人： WESTPORT POWER INC.
发明人： WALKER, Charles Joseph
IPC分类号： F02D19/06 , F02D41/30 , F02M21/02
CPC分类号： F02D41/0027 , F02D19/061 , F02D19/0628 , F02D19/0647 , F02D19/0692 , F02D19/081 , F02D41/0025 , F02D41/3005 , F02M26/05 , Y02T10/36
摘要： It is a challenge to adapt an engine designed to be fuelled with a first fuel to be fuelled with multiple fuels when a base engine electronic control unit cannot be adapted as well. A multi-fuel internal combustion engine that can be fuelled with at least one of a first and second fuel comprises a first fuel injector for introducing the first fuel directly into a combustion chamber; a first electronic controller programmed to generate a first injector drive signal for actuating the first fuel injector; a second fuel injector for introducing the second fuel upstream of an intake valve; a second electronic controller programed to generate a second injector drive signal for actuating the second fuel injector; an emulation injector comprising an electrical characteristic representative of a first fuel injector electrical characteristic; and an injector select apparatus operatively connected with the second electronic controller for selectively applying the first injector drive signal to one of the first fuel injector and the emulation injector. The second electronic controller is programmed to generate the second injector drive signal as a function of the first injector drive signal and to command the injector select apparatus to apply the first injector drive signal to one of the first fuel injector and the emulation injector.
摘要翻译：当基础发动机电子控制单元也不能适应时，将使用第一种燃料设计的发动机与多种燃料进行配合是一项挑战。可以用第一和第二燃料中的至少一种来燃料的多燃料内燃机包括用于将第一燃料直接引入燃烧室的第一燃料喷射器; 第一电子控制器，被编程为产生用于致动所述第一燃料喷射器的第一喷射器驱动信号; 第二燃料喷射器，用于在进气门的上游引入第二燃料; 第二电子控制器，被编程为产生用于致动所述第二燃料喷射器的第二喷射器驱动信号; 模拟喷射器，其包括表示第一燃料喷射器电特性的电特性; 以及与第二电子控制器可操作地连接的喷射器选择装置，用于选择性地将第一喷射器驱动信号施加到第一燃料喷射器和仿真喷射器之一。第二电子控制器被编程为根据第一喷射器驱动信号产生第二喷射器驱动信号，并命令喷射器选择装置将第一喷射器驱动信号施加到第一燃料喷射器和仿真喷射器之一。

3. 发明申请

WO2016070291A1 COMBUSTION CHAMBER GEOMETRY 审中-公开
标题翻译：燃烧室几何
公开(公告)号：WO2016070291A1
公开(公告)日：2016-05-12
申请号：PCT/CA2015/051156
申请日：2015-11-06
申请人： WESTPORT POWER INC.
发明人： MILLWARD, Philip C. , TENNY, William D.
IPC分类号： F02B23/08 , F02B23/10 , F02F1/42 , F02F3/28
CPC分类号： F02B23/08 , F02B43/00 , F02B69/04 , F02F3/26 , F02F2001/241 , Y02T10/125 , Y02T10/146 , Y02T10/32
摘要： Diesel engines modified to be fuelled with gaseous fuels experience problems with knocking and pre-ignition, limiting the compression ratio and efficiency of the engine. A new combustion chamber for a gaseous fuelled internal combustion engine, in which the combustion chamber is defined by a cylinder head, a bore in a cylinder block and a piston reciprocating in the bore, comprises a piston portion of the combustion chamber defined by a recessed shape in a piston crown; and a head portion of the combustion chamber defined by a recessed surface in the cylinder head. A ratio between the piston portion of combustion chamber volume and the head portion of combustion chamber volume is in a range of 0.7 to 1.3.
摘要翻译：用气态燃料修补燃料的柴油发动机遇到爆震和预燃的问题，限制了发动机的压缩比和效率。一种用于气态燃料内燃机的新燃烧室，其中燃烧室由气缸盖，缸体中的孔和在孔中往复运动的活塞限定，包括由凹陷部分限定的燃烧室的活塞部分形状在活塞冠; 以及由气缸盖中的凹陷表面限定的燃烧室的头部。燃烧室体积的活塞部与燃烧室容积的头部之间的比例为0.7〜1.3。

4. 发明申请

WO2016058100A1 GASEOUS FUEL PUMPING SYSTEM 审中-公开
标题翻译：气体燃油泵系统
公开(公告)号：WO2016058100A1
公开(公告)日：2016-04-21
申请号：PCT/CA2015/051039
申请日：2015-10-14
申请人： WESTPORT POWER INC.
发明人： EBBEHOJ, Michael , KRATSCHMAR, Kenneth
IPC分类号： F02M21/02 , F02D19/02 , F04B49/06
CPC分类号： F02D19/022 , F02D25/00 , F02M21/0245 , F02M21/0287 , F04B9/08 , F04B49/03 , F04B49/06 , Y02T10/32
摘要： In high horse power engines there are strict energy budgets allotted for each subsystem. It is a challenge for a gaseous fuel pumping system to supply the necessary gaseous fuel mass flow to the engine while staying within budget. A method for pressurizing a gaseous fuel supplied to an engine comprises providing first and second hydraulically actuated pumping apparatus comprising first and second shuttle valves in first and second hydraulic pistons respectively; and selectively communicating hydraulic fluid flow to the first and second hydraulically actuated pumping apparatuses. In a first mode hydraulic fluid is communicated through the first hydraulically actuated pumping apparatus to the second hydraulically actuated pumping apparatus. In a second mode hydraulic fluid is communicated through the second hydraulically actuated pumping apparatus to the first hydraulically actuated pumping apparatus. The method switches between the first and second modes when a pressure drop in hydraulic fluid pressure associated with the hydraulic fluid flowing through the first and second shuttle valves is detected.
摘要翻译：在高马力发动机中，为每个子系统分配了严格的能源预算。气体燃料泵送系统在保持在预算范围内的情况下，能够向发动机提供必要的气体燃料质量流量是一项挑战。一种用于对供应到发动机的气体燃料加压的方法包括：分别在第一和第二液压活塞中分别提供第一和第二液压致动的泵送装置，其包括第一和第二梭阀; 并且选择性地将液压流体流传送到第一和第二液压致动泵送装置。在第一模式中，液压流体通过第一液压致动泵送装置连通到第二液压致动泵送装置。在第二模式中，液压流体通过第二液压致动的泵送装置连通到第一液压致动的泵送装置。当检测到与流过第一和第二梭阀的液压流体相关联的液压流体压力的压降时，该方法在第一和第二模式之间切换。

5. 发明申请

WO2015157858A1 FUEL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：内燃机燃油系统
公开(公告)号：WO2015157858A1
公开(公告)日：2015-10-22
申请号：PCT/CA2015/050303
申请日：2015-04-13
申请人： WESTPORT POWER INC.
发明人： GOODFELLOW, Nikolas
IPC分类号： F02D19/06 , F02D41/30 , F02M25/00 , F02M43/00 , F02M47/04
CPC分类号： F02M43/00 , F02D41/0027 , F02D41/3094 , F02D41/403 , F02D2200/0602 , F02M37/0023 , F02M43/04 , F02M63/0029 , Y02T10/44
摘要： Some engines employ a fuel for purposes other than for combusting in motoring. These engines take longer to start and have reduced efficiency in certain operating modes. An improved fuel system for an internal combustion engine comprises a fuel supply in fluid communication with and supplying a fuel for motoring the internal combustion engine. A fuel employer is in fluid communication with the fuel supply and employs the fuel for purposes other than as a source of energy for combusting in the internal combustion engine. There is a valve for selectively enabling fluid communication between the fuel supply and the fuel employer. The valve is closed to disable the fuel employer when not needed to reduce the demand on the fuel supply.
摘要翻译：一些发动机使用燃料用于除了在驾驶中燃烧之外的目的。这些发动机起动时间较长，并且在某些操作模式下降低了效率。用于内燃机的改进的燃料系统包括与用于驱动内燃机的燃料流体连通并供应燃料的燃料供应。燃料雇主与燃料供应流体通信，并且将燃料用于除作为在内燃机中燃烧的能量之外的目的。有一个选择性地使得燃料供应和燃料雇主之间的流体连通的阀。关闭阀门以禁止燃料雇主在不需要时减少对燃料供应的需求。

6. 发明申请

WO2015154183A1 MULTI-FUEL INJECTION SYSTEM AND METHOD 审中-公开
标题翻译：多燃料注入系统和方法
公开(公告)号：WO2015154183A1
公开(公告)日：2015-10-15
申请号：PCT/CA2015/050284
申请日：2015-04-08
申请人： WESTPORT POWER INC.
发明人： GOUDIE, Dale W. , MUMFORD, David K.
IPC分类号： F02D41/30 , F02D19/08 , F02M25/00 , F02M43/00 , F02M43/04
CPC分类号： F02D19/08 , F02D19/0692 , F02D19/0694 , F02D41/0025 , F02D41/0027 , F02M43/00 , F02M43/04 , F02M45/04 , F02M45/08 , Y02T10/36
摘要： A multi-fuel injection system and method for an internal combustion engine comprises a first fuel injector having a flow area sized for accurate and consistent injection of a pilot amount of a first fuel directly into a combustion chamber, and a 5 second fuel injector in selective communication with a supply of the first fuel and a supply of a second fuel, the second fuel injector having a flow area sized to accommodate injection the first fuel directly into the combustion chamber in amounts required to deliver enough energy to enable operation across a range of engine operating conditions, including high load conditions, with only the first fuel supplied 10 as fuel to the combustion chamber. When the second fuel injector is supplied with the second fuel, it is operable for late-cycle injection of a portion of the second fuel that is required to operate said engine at high load.
摘要翻译：一种用于内燃机的多燃料喷射系统和方法，包括：第一燃料喷射器，其具有流动面积，该流动面积的尺寸适于将先导量的第一燃料直接喷射到燃烧室中;以及5秒的选择性燃料喷射器与第一燃料的供应和第二燃料的供应的通信，所述第二燃料喷射器具有流动面积，其尺寸适于容纳将第一燃料直接喷射到燃烧室中的量，以达到递送足够的能量以使得能够在一发动机工作条件，包括高负载条件，只有第一个燃料10作为燃料供应到燃烧室。当第二燃料喷射器被供给第二燃料时，其可操作用于在高负荷下操作所述发动机所需的第二燃料的一部分的后期循环喷射。

7. 发明申请

WO2017000072A1 MULTI-VESSEL FLUID STORAGE AND DELIVERY SYSTEM 审中-公开
标题翻译：多级流体储存和输送系统
公开(公告)号：WO2017000072A1
公开(公告)日：2017-01-05
申请号：PCT/CA2016/050766
申请日：2016-06-29
申请人： WESTPORT POWER INC.
发明人： GARNER, Gage D. , OGMEN, Melih
IPC分类号： F17C7/04 , F17C13/02
CPC分类号： F17C7/04 , F17C13/02
摘要： A multi-vessel fluid storage and delivery system is disclosed which is particularly useful in systems having internal combustion engines which use gaseous fuels. The system can deliver gaseous fluids at higher flow rates than that which can be reliably achieved by vapor pressure building circuits alone, and that keeps pressure inside the storage vessel lower so that it reduces fueling time and allows for quick starts thereafter. The system is designed to store gaseous fluid in liquefied form in a plurality of storage vessels including a primary storage vessel fluidly connected to a pump apparatus and one or more server vessels which together with a control system efficiently stores a liquefied gaseous fluid and quickly delivers the fluid as a gas to an end user even when high flow rates are required. The system controls operation of the pump apparatus as a function of the measured fluid pressure, and controls the fluid pressure in a supply line according to predetermined pressure values based upon predetermined system operating conditions.
摘要翻译：公开了一种多容器流体储存和输送系统，其在具有使用气体燃料的内燃机的系统中特别有用。该系统可以以比单独的蒸汽压力建筑电路可靠地实现的流速更高的流速输送气体流体，并且将储存容器内的压力降低，从而减少加油时间并允许其后快速启动。该系统被设计成将液态的气态流体储存在多个储存容器中，包括流体连接到泵装置的主存储容器和一个或多个服务器容器，其中控制系统与控制系统一起有效地储存液化气体流体并快速地输送流体作为气体，即使在需要高流量时也是终端用户。该系统根据所测量的流体压力来控制泵装置的操作，并且根据预定的系统操作条件根据预定的压力值控制供给管线中的流体压力。

8. 发明申请

WO2016197253A1 FUEL INJECTOR TRIMMING IN A MULTI-FUEL ENGINE 审中-公开
标题翻译：燃油喷射器在多燃料发动机中的调整
公开(公告)号：WO2016197253A1
公开(公告)日：2016-12-15
申请号：PCT/CA2016/050668
申请日：2016-06-10
申请人： WESTPORT POWER INC.
发明人： FANG, Chaohong
IPC分类号： F02D41/30 , F02D19/06 , F02D41/14
CPC分类号： F02D41/0027 , F02D19/0689 , F02D19/0692 , F02D41/0025 , F02D41/1454 , F02D41/2467 , F02M69/046 , Y02T10/36
摘要： In bi-fuel engines trimming values for liquid fuel injectors can drift away from predetermined values when operating in a gaseous fuel mode. A method for trimming a first fuel injector operable to inject a first fuel during a first fuelling mode and a second fuel injector operable to inject a second fuel during a second fuelling mode of a multi-fuel engine includes, during the first fuelling mode, (a) calculating a first short term trim for the first fuel injector as a function of oxygen content in exhaust gases; and (b) calculating a first long term trim for the first fuel injector as a function of a history of the first short term trim; and during the second fuelling mode, (c) recording the first long term trim when entering the second fueling mode; (d) continuing steps (a) and (b); (e) calculating a second short term trim for the second fuel injector as a function of the oxygen content in exhaust gases; and (f) calculating a second long term trim for the second fuel injector as a function of a history of the second short term trim; where the second long term trim is calculated more frequently than the first long term trim such that a difference between the first long term trim and the recorded first long term trim is maintained below a predetermined magnitude.
摘要翻译：在双燃料发动机中，当以气体燃料模式操作时，液体燃料喷射器的修整值可以偏离预定值。一种用于修整可操作以在第一加油模式期间喷射第一燃料的第一燃料喷射器和在多燃料发动机的第二加油模式期间可操作以喷射第二燃料的第二燃料喷射器的方法包括在第一加油模式期间， a）计算作为排气中氧含量的函数的第一燃料喷射器的第一短期装饰; 和（b）根据第一短期修剪的历史来计算第一燃料喷射器的第一长期装饰; 并且在第二加油模式期间，（c）在进入第二加油模式时记录第一长期修剪; （d）继续步骤（a）和（b）; （e）根据废气中的氧含量计算第二燃料喷射器的第二短期装饰; 和（f）根据第二短期装饰的历史来计算第二燃料喷射器的第二长期装饰; 其中第二长期修剪比第一长期修剪更频繁地计算，使得第一长期修剪和记录的第一长期修剪之间的差被维持在预定的大小以下。

9. 发明申请

WO2016161514A1 OPERATING A GASEOUS FUEL INJECTOR 审中-公开
标题翻译：操作气体燃料喷射器
公开(公告)号：WO2016161514A1
公开(公告)日：2016-10-13
申请号：PCT/CA2016/050401
申请日：2016-04-07
申请人： WESTPORT POWER INC.
发明人： WELCH, Alan B , BLAIR, Colin W. , KARIMI SHARIF, Hamed
IPC分类号： F02D41/30 , F02D19/02 , F02D41/22 , F02M21/02
CPC分类号： F02D19/024 , F02D19/026 , F02D19/027 , F02D19/0642 , F02D41/0027 , F02D41/221 , F02D41/2467 , F02D41/3005 , F02D2041/225 , F02D2200/0614 , F02M21/0254 , F02M21/0275 , Y02T10/32 , Y02T10/36
摘要： Fuel injection accuracy of gaseous fuel injectors is important for efficient engine operation. However, the performance of the injectors varies from part to part and across their lifetime, and when an injector is under performing according to its specification it is often unknown what is causing the problem. An apparatus for operating a gaseous fuel injector in an engine comprises a mass flow sensor that generates a signal representative of the mass flow rate of the gaseous fuel in a supply conduit in the engine. A controller connected with the injector and the mass flow sensor is programmed to actuate the injector to introduce gaseous fuel into the engine; determine the actual mass flow rate of the gaseous fuel based on the signal representative of the mass flow rate; calculate a difference between the actual mass flow rate and a desired mass flow rate; and adjust at least one of on-time of the gaseous fuel injector and a magnitude of an injector activation signal by respective amounts based on the difference when the absolute value of the difference is greater than a predetermined value.
摘要翻译：气体燃料喷射器的燃油喷射精度对于有效的发动机运转是重要的。然而，喷射器的性能在一段时间和整个寿命期间不同，并且当喷射器根据其规格执行时，通常不清楚是什么导致问题。用于在发动机中操作气体燃料喷射器的装置包括质量流量传感器，其产生表示发动机中的供应管道中的气体燃料的质量流率的信号。与喷射器和质量流量传感器连接的控制器被编程为致动喷射器以将气体燃料引入发动机; 基于表示质量流量的信号，确定气体燃料的实际质量流量; 计算实际质量流量和所需质量流量之间的差; 并且当差的绝对值大于预定值时，基于差异来调节气体燃料喷射器的接通时间和喷射器启动信号的大小中的至少一个。

10. 发明申请

WO2016127254A1 REDUCING UNBURNED HYDROCARBON EMISSIONS IN GASEOUS FUELLED LEAN-BURN ENGINES 审中-公开
标题翻译：在气体燃烧的灼热发动机中减少未燃烧的碳氢化合物排放
公开(公告)号：WO2016127254A1
公开(公告)日：2016-08-18
申请号：PCT/CA2016/050122
申请日：2016-02-10
申请人： WESTPORT POWER INC.
发明人： HILL, Philip G. , PATYCHUK, Bronson D. , MCTAGGART-COWAN, Gordon P. , WU, Ning
IPC分类号： F01L1/34 , F02D13/02 , F02D41/00
CPC分类号： F02D41/0027 , F02D13/0211 , F02D15/00 , F02D41/0007 , F02D41/006 , F02D2041/001 , F02M21/0215 , F02M21/0275 , F02M21/0284 , Y02T10/144 , Y02T10/18 , Y02T10/32
摘要： It is a challenge to reduce unburned hydrocarbon emissions for gaseous fuelled engines, especially at low engine load conditions, to meet demanding emission regulation targets. A method for reducing unburned hydrocarbon emissions in a lean- burn internal combustion engine that is fuelled with a gaseous fuel comprises adjusting the timing for closing of an intake valve as a function of engine operating conditions by one of advancing timing for closing of the intake valve and closing the intake valve earlier during an intake stroke; and retarding timing for closing of the intake valve and closing the intake valve later during a compression stroke. The volumetric efficiency of the internal combustion engine is reduced and unburned hydrocarbon emissions are maintained below a predetermined level.
摘要翻译：减少气体燃料发动机的未燃烧碳氢化合物排放是困难的，特别是在低发动机负荷条件下，以满足苛刻的排放调节目标。一种用于减少用燃气燃料燃烧的贫燃燃烧内燃机中的未燃碳氢化合物排放的方法，包括通过关闭进气阀的前进时间之一来调节作为发动机运行条件的函数关闭进气门的正时并且在进气冲程期间更早地关闭进气门; 以及在压缩冲程期间稍后关闭进气门并关闭进气门的延迟正时。内燃机的容积效率降低，未燃碳氢化合物排放量维持在预定水平以下。

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