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公开(公告)号：WO2015120549A1
公开(公告)日：2015-08-20
申请号：PCT/CA2015/050097
申请日：2015-02-10
Applicant: WESTPORT POWER INC.
Inventor： FEI, Wei , WALKER, James D.
CPC classification number: F02D41/064 , F02D19/0628 , F02D19/0681 , F02D19/0689 , F02D19/0694 , F02D19/10 , F02D19/105 , F02D41/0025 , F02D41/0027 , F02D2200/0414 , F02D2200/0602 , Y02T10/36
Abstract: Starting a gaseous fuelled engine employing a pilot fuel at cold temperatures is challenging due to reduced ignitability and combustion efficiency of the fuel(s), and the increased viscosity of engine oil. A technique for starting a compression ignition, gaseous fuelled internal combustion engine employing a pilot fuel comprises determining one of a normal start condition and a cold start condition; during the normal start condition, introducing the pilot fuel into a combustion chamber of the internal combustion engine when the pilot fuel pressure rises above a first pressure; during the cold start condition, introducing the pilot fuel into the combustion chamber when the pilot fuel pressure rises above a second pressure that is higher than the first pressure; and selectively introducing the gaseous fuel into the combustion chamber.
Abstract translation: 由于燃料的可燃性和燃烧效率降低以及发动机机油的粘度增加，启动在低温下使用先导燃料的气体燃料发动机是具有挑战性的。 用于启动使用引燃燃料的压缩点火，气体燃料内燃机的技术包括确定正常启动条件和冷启动条件之一; 在正常起动条件下，当先导燃料压力升高到高于第一压力时，将引燃燃料引入内燃机的燃烧室; 在冷启动状态下，当所述先导燃料压力升高到比所述第一压力高的第二压力时，将所述引燃燃料引入所述燃烧室; 并选择性地将气体燃料引入燃烧室。
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公开(公告)号：WO2014138955A1
公开(公告)日：2014-09-18
申请号：PCT/CA2014/050186
申请日：2014-03-06
Applicant: WESTPORT POWER INC.
Inventor： TOUCHETTE, Alain M.J. , WALKER, James D. , HAAS, Jordan C.
CPC classification number: F02D41/0027 , F02D19/0605 , F02D19/0623 , F02D19/0665 , F02D19/0678 , F02D19/0681 , F02D19/0684 , F02D19/0694 , F02D19/08 , F02D19/10 , F02D41/0025 , F02D41/123 , F02D41/221 , F02D41/30 , F02D41/3047 , F02D41/3872 , F02D41/402 , F02D2041/224 , F02D2041/3881 , Y02T10/36
Abstract: A method for preventing regulation failure of fuel regulator during a non-motoring operating mode of an internal combustion engine is provided. The fuel regulator employs a first fuel to regulate pressure of a second fuel. The first fuel is communicated to the fuel regulator through a first fuel circuit. The method comprises actuating a fuel injector that introduces the first fuel and the second fuel into a combustion chamber of the internal combustion engine during the non-motoring operating mode. The fuel injector is actuated with an injection command signal having a pulse width below a predetermined maximum value whereby no fuel is injected into the combustion chamber and the first fuel drains from the first fuel circuit through the fuel injector to a supply tank.
Abstract translation: 提供了一种用于在内燃机的非电动操作模式期间防止燃料调节器的调节故障的方法。 燃料调节器采用第一燃料来调节第二燃料的压力。 第一燃料通过第一燃料回路传送到燃料调节器。 该方法包括致动在非电动操作模式期间将第一燃料和第二燃料引入内燃机的燃烧室的燃料喷射器。 燃料喷射器由具有低于预定最大值的脉冲宽度的喷射命令信号致动，由此燃料不被喷射到燃烧室中，并且第一燃料从第一燃料回路通过燃料喷射器排出到供应罐。
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3.发明申请
公开(公告)号：WO2015095955A1
公开(公告)日：2015-07-02
申请号：PCT/CA2014/051219
申请日：2014-12-16
Applicant: WESTPORT POWER INC.
Inventor： FEI, Wei , WALKER, James D. , MCTAGGART-COWAN, Gordon P. , MANN, Kenneth R.
CPC classification number: F02D19/061 , F02B43/00 , F02D19/0689 , F02D19/0694 , F02D19/10 , F02D35/025 , F02D41/0025 , F02D41/0027 , F02D41/3011 , F02D41/3064 , F02D41/401 , F02D41/403 , Y02T10/36 , Y02T10/44
Abstract: Emission targets, such as NOx levels, for gaseous fuelled internal combustion engines that burn a gaseous fuel in a diffusion combustion mode are increasingly more challenging to achieve. A method of fuel injection for an internal combustion engine fuelled with a gaseous fuel comprises introducing a first amount of pilot fuel in a first stage of fuel injection; introducing a first amount of main fuel (the gaseous fuel) in a second stage of fuel injection; and introducing a second amount of main fuel in a third stage of fuel injection. The first and second amounts of main fuel contribute to load and speed demand of the internal combustion engine. Engine maps calibrated for different engine performance can be employed in different regions of the load and speed range of the engine. The engine maps are blended when the engine transitions between two regions; and momentary excursions into different regions do not change the engine calibration.
Abstract translation: 对于在扩散燃烧模式中燃烧气体燃料的气态燃料内燃机的排放目标，例如NOx水平，越来越难以实现。 用于燃料燃料的内燃机的燃料喷射方法包括在燃料喷射的第一阶段引入第一量的引燃燃料; 在燃料喷射的第二阶段引入第一量的主要燃料（气体燃料）; 以及在第三级燃料喷射中引入第二量的主燃料。 第一和第二量的主要燃料有助于内燃机的负载和速度需求。 针对不同发动机性能进行校准的发动机地图可用于发动机负载和速度范围的不同区域。 当发动机在两个区域之间转换时，发动机地图混合; 不同地区的瞬间游览不会改变发动机校准。
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Patent Agency Ranking
公开(公告)号：EP3105442B1
公开(公告)日：2020-05-06
申请号：EP15749079.8
申请日：2015-02-10
Applicant: Westport Power Inc.
Inventor： FEI, Wei , WALKER, James D.
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5.发明公开
公开(公告)号：EP3094848A1
公开(公告)日：2016-11-23
申请号：EP14873596.2
申请日：2014-12-16
Applicant: Westport Power Inc.
Inventor： FEI, Wei , WALKER, James D. , MCTAGGART-COWAN, Gordon P. , MANN, Kenneth R.
CPC classification number: F02D19/061 , F02B43/00 , F02D19/0689 , F02D19/0694 , F02D19/10 , F02D35/025 , F02D41/0025 , F02D41/0027 , F02D41/3011 , F02D41/3064 , F02D41/401 , F02D41/403 , Y02T10/36 , Y02T10/44
Abstract: Emission targets, such as NOx levels, for gaseous fuelled internal combustion engines that burn a gaseous fuel in a diffusion combustion mode are increasingly more challenging to achieve. A method of fuel injection for an internal combustion engine fuelled with a gaseous fuel comprises introducing a first amount of pilot fuel in a first stage of fuel injection; introducing a first amount of main fuel (the gaseous fuel) in a second stage of fuel injection; and introducing a second amount of main fuel in a third stage of fuel injection. The first and second amounts of main fuel contribute to load and speed demand of the internal combustion engine. Engine maps calibrated for different engine performance can be employed in different regions of the load and speed range of the engine. The engine maps are blended when the engine transitions between two regions; and momentary excursions into different regions do not change the engine calibration.
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公开(公告)号：EP3105442A1
公开(公告)日：2016-12-21
申请号：EP15749079.8
申请日：2015-02-10
Applicant: Westport Power Inc.
Inventor： FEI, Wei , WALKER, James D.
Abstract: Starting a gaseous fuelled engine employing a pilot fuel at cold temperatures is challenging due to reduced ignitability and combustion efficiency of the fuel(s), and the increased viscosity of engine oil. A technique for starting a compression ignition, gaseous fuelled internal combustion engine employing a pilot fuel comprises determining one of a normal start condition and a cold start condition; during the normal start condition, introducing the pilot fuel into a combustion chamber of the internal combustion engine when the pilot fuel pressure rises above a first pressure; during the cold start condition, introducing the pilot fuel into the combustion chamber when the pilot fuel pressure rises above a second pressure that is higher than the first pressure; and selectively introducing the gaseous fuel into the combustion chamber.
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公开(公告)号：EP2971709B1
公开(公告)日：2019-10-02
申请号：EP14762882.0
申请日：2014-03-06
Applicant: Westport Power Inc.
Inventor： TOUCHETTE, Alain M.J. , WALKER, James D. , HAAS, Jordan C.
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公开(公告)号：EP2971709A1
公开(公告)日：2016-01-20
申请号：EP14762882.0
申请日：2014-03-06
Applicant: Westport Power Inc.
Inventor： TOUCHETTE, Alain M.J. , WALKER, James D. , HAAS, Jordan C.
Abstract: A method for fuel regulation during a non-motoring operating mode of an internal combustion engine is provided. A fuel regulator employs a first fuel to regulate pressure of a second fuel. The first fuel is communicated to the fuel regulator through a first fuel circuit. The method comprises actuating a fuel injector that introduces the first fuel and the second fuel into a combustion chamber of the internal combustion engine during the non-motoring operating mode. The fuel injector is actuated with an injection command signal having a pulse width below a predetermined maximum value whereby no fuel is injected into the combustion chamber and the first fuel drains from the first fuel circuit through the fuel injector to a supply tank.
Abstract translation: 提供了一种用于在内燃机的非驱动运行模式期间防止燃料调节器的调节失效的方法。 燃料调节器使用第一燃料来调节第二燃料的压力。 第一燃料通过第一燃料回路传送到燃料调节器。 该方法包括致动燃料喷射器，该燃料喷射器在非驾驶运行模式期间将第一燃料和第二燃料引入内燃机的燃烧室。 燃料喷射器利用具有低于预定最大值的脉冲宽度的喷射命令信号来致动，由此没有燃料被喷射到燃烧室中，并且第一燃料从第一燃料回路通过燃料喷射器排出到供应罐。
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