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公开(公告)号：US20080230041A1
公开(公告)日：2008-09-25
申请号：US12077378
申请日：2008-03-19
IPC分类号： F02B13/00
CPC分类号： F02D19/087 , F02B23/08 , F02B29/0418 , F02D19/084 , F02M26/08 , F02M26/23 , Y02T10/125 , Y02T10/36
摘要： In an internal combustion engine adapted to combust alcohol blend fuels (i.e., fuels containing greater than 20% alcohol by volume), a dilute combustion mixture (e.g., with substantial EGR), intake air cooling, and latent cooling caused by vaporization of the alcohol fuel, are used together with a compact combustion chamber (in which the distance between the spark plug tip and furthest point of the combustion chamber is less than one-half the cylinder bore diameter) and controlled spark retardation to enable the use of a high compression ratio (greater than 15:1), for improved efficiency without triggering auto-ignition. Thermal brake efficiency significantly exceeds that for conventional gasoline engines, thereby improving the potential cost-effectiveness of alcohol fuels. Stoichiometric operation is used for optimal emissions control.
摘要翻译： 在适于燃烧醇混合燃料（即含有大于20体积％醇的燃料）的内燃机中，稀释的燃烧混合物（例如，具有大量EGR），进气冷却和由酒精蒸发引起的潜冷 燃料与紧凑的燃烧室一起使用（其中火花塞尖端与燃烧室的最远点之间的距离小于气缸内径的一半）和受控的火花发射延迟以使得能够使用高压缩 比（大于15：1），以提高效率而不触发自动点火。 热制动效率明显高于常规汽油发动机，从而提高了酒精燃料的潜在成本效益。 化学计量操作用于最佳排放控制。
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公开(公告)号：US20100326401A1
公开(公告)日：2010-12-30
申请号：US12827378
申请日：2010-06-30
IPC分类号： F02B17/00
CPC分类号： F02B17/00 , F02B69/02 , Y02T10/12 , Y02T10/128
摘要： A variable displacement engine comprises two engine modules fed from a common fuel source, each engine module having an individual crankshaft. The first engine module has a high compression ratio (e.g., greater than 13:1), while the second module has a typical compression ratio for a gasoline engine (e.g., between 9:1 and 11:1). In one embodiment, the first engine module operates through high efficiency optimized alcohol fuel combustion when the fuel content exceeds a minimum alcohol content. In an alternative embodiment, the first engine module operates at high efficiency through gasoline HCCI combustion when conditions permit. When operating conditions do not permit the first engine module to operate at high efficiency, the second engine module operates as the primary engine module, with the first engine module available to provide supplemental power (at less than optimal efficiency) if needed to meet driver demand.
摘要翻译： 可变排量发动机包括从共同燃料源供给的两个发动机模块，每个发动机模块具有单独的曲轴。 第一发动机模块具有高压缩比（例如大于13:1），而第二模块具有用于汽油发动机的典型压缩比（例如在9:1至11:1之间）。 在一个实施例中，当燃料含量超过最低酒精含量时，第一发动机模块通过高效优化的醇燃料燃烧进行操作。 在替代实施例中，当条件允许时，第一发动机模块通过汽油HCCI燃烧以高效率运行。 当操作条件不允许第一发动机模块以高效率运行时，第二发动机模块作为主要发动机模块运行，如果需要满足驾驶员需求，第一发动机模块可用于提供补充功率（不到最佳效率） 。
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公开(公告)号：US08272356B2
公开(公告)日：2012-09-25
申请号：US12827378
申请日：2010-06-30
IPC分类号： F02B75/32
CPC分类号： F02B17/00 , F02B69/02 , Y02T10/12 , Y02T10/128
摘要： A variable displacement engine comprises two engine modules fed from a common fuel source, each engine module having an individual crankshaft. The first engine module has a high compression ratio (e.g., greater than 13:1), while the second module has a typical compression ratio for a gasoline engine (e.g., between 9:1 and 11:1). In one embodiment, the first engine module operates through high efficiency optimized alcohol fuel combustion when the fuel content exceeds a minimum alcohol content. In an alternative embodiment, the first engine module operates at high efficiency through gasoline HCCI combustion when conditions permit. When operating conditions do not permit the first engine module to operate at high efficiency, the second engine module operates as the primary engine module, with the first engine module available to provide supplemental power (at less than optimal efficiency) if needed to meet driver demand.
摘要翻译： 可变排量发动机包括从共同燃料源供给的两个发动机模块，每个发动机模块具有单独的曲轴。 第一发动机模块具有高压缩比（例如大于13:1），而第二模块具有用于汽油发动机的典型压缩比（例如在9:1至11:1之间）。 在一个实施例中，当燃料含量超过最低酒精含量时，第一发动机模块通过高效优化的醇燃料燃烧进行操作。 在替代实施例中，当条件允许时，第一发动机模块通过汽油HCCI燃烧以高效率运行。 当操作条件不允许第一发动机模块以高效率运行时，第二发动机模块作为主要发动机模块运行，如果需要满足驾驶员需求，第一发动机模块可用于提供补充功率（不到最佳效率） 。
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公开(公告)号：US20080135325A1
公开(公告)日：2008-06-12
申请号：US11999884
申请日：2007-12-07
CPC分类号： B62D5/0837 , B62D5/065
摘要： A center-closed power steering system provides power steering assistance in engine-off conditions for reduced fuel consumption. The power steering system includes a hydraulic pump mechanically driven by the engine, a high pressure accumulator, a steering gearbox fluidly connected to the accumulator, and a center closed valve mechanically connected to a driver-operated steering wheel. The valve is configured to selectively control flow of pressurized fluid from the accumulator to the steering gearbox to provide power steering assistance. The inner shaft of the rotary center-closed valve is provided with a cavity with V-shaped notches on the transition surfaces on lands configured to sealingly engage the inner surface of the valve outer sleeve, in order to provide a smooth transition in flow for power steering assistance, and a better driver feel.
摘要翻译： 中央关闭的动力转向系统在发动机关闭条件下提供动力转向辅助以减少燃料消耗。 动力转向系统包括由发动机机械驱动的液压泵，高压蓄能器，流体连接到蓄能器的转向齿轮箱，以及机械地连接到驾驶员操纵的方向盘的中心关闭阀。 阀被配置成选择性地控制加压流体从蓄能器到转向齿轮箱的流动，以提供动力转向辅助。 旋转中心关闭阀的内轴设置有在凸台上的过渡表面上具有V形凹口的空腔，其被构造成密封地接合阀外套筒的内表面，以便为动力流动提供平稳过渡 转向助力和更好的司机感觉。
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公开(公告)号：US20120000725A1
公开(公告)日：2012-01-05
申请号：US13232677
申请日：2011-09-14
IPC分类号： B62D5/06
CPC分类号： B62D5/0837 , B62D5/065
摘要： Motor vehicles are equipped with a center-closed power steering system to provide power steering assistance in engine-off conditions for reduced fuel consumption. The power steering system includes a hydraulic pump mechanically driven by the engine, a high pressure accumulator, a steering gearbox fluidly connected to the accumulator, and a center closed valve mechanically connected to a driver-operated steering wheel. The valve is configured to selectively control flow of pressurized fluid from the accumulator to the steering gearbox to provide power steering assistance.
摘要翻译： 机动车辆配备有中央关闭的动力转向系统，以在发动机关闭条件下提供动力转向辅助以减少燃料消耗。 动力转向系统包括由发动机机械驱动的液压泵，高压蓄能器，流体连接到蓄能器的转向齿轮箱，以及机械地连接到驾驶员操纵的方向盘的中心关闭阀。 阀被配置成选择性地控制加压流体从蓄能器到转向齿轮箱的流动，以提供动力转向辅助。
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公开(公告)号：US08100221B2
公开(公告)日：2012-01-24
申请号：US11999884
申请日：2007-12-07
IPC分类号： B62D5/08
CPC分类号： B62D5/0837 , B62D5/065
摘要： A center-closed power steering system provides power steering assistance in engine-off conditions for reduced fuel consumption. The power steering system includes a hydraulic pump mechanically driven by the engine, a high pressure accumulator, a steering gearbox fluidly connected to the accumulator, and a center closed valve mechanically connected to a driver-operated steering wheel. The valve is configured to selectively control flow of pressurized fluid from the accumulator to the steering gearbox to provide power steering assistance. The inner shaft of the rotary center-closed valve is provided with a cavity with V-shaped notches on the transition surfaces on lands configured to sealingly engage the inner surface of the valve outer sleeve, in order to provide a smooth transition in flow for power steering assistance, and a better driver feel.
摘要翻译： 中央关闭的动力转向系统在发动机关闭条件下提供动力转向辅助以减少燃料消耗。 动力转向系统包括由发动机机械驱动的液压泵，高压蓄能器，流体连接到蓄能器的转向齿轮箱，以及机械地连接到驾驶员操纵的方向盘的中心关闭阀。 阀被配置成选择性地控制加压流体从蓄能器到转向齿轮箱的流动，以提供动力转向辅助。 旋转中心关闭阀的内轴设置有在凸台上的过渡表面上具有V形凹口的空腔，其配置成密封地接合阀外套筒的内表面，以便为流动提供平稳的过渡功率 转向助力和更好的司机感觉。
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7.发明授权Low emission diesel combustion system with low charge-air oxygen concentration levels and high fuel injection pressures 有权低排放柴油燃烧系统，低空气氧浓度水平和高燃油喷射压力公开(公告)号：US06857263B2
公开(公告)日：2005-02-22
申请号：US10666678
申请日：2003-09-19
IPC分类号： F02B37/00 , C10L20060101 , F01N3/035 , F01N3/10 , F01N5/04 , F01N13/02 , F01P3/12 , F01P3/20 , F01P5/02 , F01P7/14 , F01P7/16 , F02B1/12 , F02B37/007 , F02B37/013 , F02B37/10 , F02B37/14 , F02B39/10 , F02D21/08 , F02D23/00 , F02D23/02 , F02D35/02 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/14 , F02D43/00 , F02D45/00 , F02M25/07 , F02M57/02 , F16J15/34 , F16J15/42
CPC分类号： F02D41/0052 , F01N3/035 , F01N13/009 , F01N2340/04 , F01N2340/06 , F01N2430/06 , F02B1/12 , F02B29/0418 , F02B37/10 , F02B37/14 , F02B39/10 , F02D35/025 , F02D41/0007 , F02D41/144 , F02D41/1454 , F02D41/3035 , F02D2200/0406 , F02D2250/31 , F02D2250/36 , F02M26/08 , F02M26/15 , F02M26/23 , F02M26/35 , F02M26/46 , F02M57/025 , F16J15/3448 , F16J15/42 , Y02T10/144 , Y02T10/146 , Y02T10/47
摘要： This invention sets forth a commercially viable diesel combustion system that meets environmentally acceptable levels of NOx emissions (i.e. 0.2 g/bhp-hr or lower across a full map of engine speeds and loads) without the need for use of NOx aftertreatments, and simultaneously maintains engine-out PM emissions relatively close (e.g. with smoke levels at or below 3 BSN) to environmentally acceptable PM post-aftertreatment levels. The invention achieves these results by operating within a unique combination of parameters. These parameters comprise: (1) charge-air oxygen concentration below 16%, preferably between 10% and 15%, more preferably between 11% and 14%, and most preferably between 12% and 13.5% for virtually all engine operating conditions (but not necessarily at no-load or low load conditions), (2) fuel injection pressures at or exceeding 1800 bar, preferably exceeding 2100 bar, more preferably exceeding 2300 bar, and most preferably exceeding 2500 bar, at most engine speeds and loads, and (3) charge-air mass/fuel mass ratio between 25:1 and 45:1 for medium and high loads. Furthermore, the system is preferably run continuously slightly lean of stoichiometry, providing just enough excess oxygen to facilitate completeness of combustion and to maintain an exhaust oxygen level sufficient for continuous trap regeneration at a balance point in operation.
摘要翻译： 本发明提出了商业可行的柴油燃烧系统，其不需要使用NOx后处理，其满足环境可接受的NOx排放水平（即，在整个发动机速度和负载图上为0.2g / bhp-hr或更低），同时维持 发动机PM排放量相对较近（例如烟气浓度在3 BSN以下）达到环境可接受的PM后处理水平。 本发明通过在参数的独特组合中操作来实现这些结果。 这些参数包括：（1）对于几乎所有的发动机操作条件，充气 - 空气氧浓度低于16％，优选10％至15％，更优选11％至14％，最优选12％至13.5％ 不一定在空载或低负载条件下），（2）大多数发动机转速和负载下燃油喷射压力为或超过1800巴，优选超过2100巴，更优选超过2300巴，最优选超过2500巴; （3）对于中，高负荷，充气质量/燃料质量比在25：1和45：1之间。 此外，该系统优选连续地以化学计量稀少运行，提供刚好足够的过量氧气以促进燃烧的完全性，并且在运行的平衡点上保持足够的持续的陷阱再生的排气氧气水平。
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公开(公告)号：US08387385B2
公开(公告)日：2013-03-05
申请号：US11173920
申请日：2005-07-01
CPC分类号： F02B37/183 , F01D17/14 , F02B37/004 , F02B37/013 , F02B37/18 , F02B37/22 , F05B2220/40 , F16K1/12 , F16K3/0209 , Y02T10/144
摘要： A turbocharger system includes first and second turbines arranged such that exhaust gas passes through the first turbine then the second turbine. A bypass channel is configured such that exhaust gas entering the channel passes only through the second turbine. A valve positioned in the bypass channel regulates the flow of gas therethrough. The valve accelerates a stream of gas and focuses the stream toward the second turbine such that a large part of the added velocity of the stream is preserved as it enters the second turbine. Operation of the valve may be controlled so as to maintain the valve in a closed position while exhaust gas pressure above the first turbine pressure is below a first threshold, to progressively open the valve as the pressure increases above the first threshold, and to maintain the valve in a full-open position while the pressure is above a second threshold.
摘要翻译： 涡轮增压器系统包括第一和第二涡轮机，其布置成使得废气通过第一涡轮，然后通过第二涡轮机。 旁通通道被配置成使得进入通道的废气仅通过第二涡轮。 位于旁路通道中的阀调节气体的流动。 阀加速气流并将流聚焦到第二涡轮机，使得流进入第二涡轮机时保留流的大部分附加速度。 可以控制阀的操作，以便在高于第一涡轮压力的排气压力低于第一阈值时将阀保持在关闭位置，以随着压力升高到高于第一阈值逐渐打开阀，并且保持阀 阀处于全开位置，同时压力高于第二阈值。
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公开(公告)号：US07681394B2
公开(公告)日：2010-03-23
申请号：US11389385
申请日：2006-03-24
申请人： David James Haugen
发明人： David James Haugen
CPC分类号： F02D41/0007 , F01N3/08 , F02B1/12 , F02B3/06 , F02B29/0406 , F02D9/04 , F02D41/0065 , F02D41/107 , F02D41/3035 , F02D2250/36 , F02M26/05 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/23 , F02M26/46 , Y02T10/128 , Y02T10/144 , Y02T10/47
摘要： Improved transient response times are obtained while maintaining low emissions with a low pressure EGR system through methods for quickly obtaining a desired oxygen concentration for charge-air to be used for combustion. Under a first method, fuel quantity in the main combustion event is controlled in the combustion process to produce exhaust around a relatively constant target exhaust oxygen concentration value. By keeping the exhaust oxygen concentration levels at a relatively constant value, lag time in waiting for low pressure EGR valve adjustments during transients may be avoided, and the system's air handling response to meet transients may be paced solely by adjusting the mass of air to be supplied (i.e. boost response). Under a second method, a multiple-stage combustion process is utilized, in which fuel feed is controlled in a small, preliminary HCCI-type combustion event in order to produce a target oxygen concentration of charge-air to be used for the second, main combustion event. Under a third method, exhaust rebreathing is used to produce a target oxygen concentration of charge-air to be used for combustion.
摘要翻译： 通过用于快速获得用于燃烧的充电 - 空气的期望氧浓度的方法，通过低压EGR系统维持低排放，获得了改进的瞬态响应时间。 在第一种方法中，在燃烧过程中控制主燃烧事件中的燃料量，以产生围绕相对恒定的目标排气氧浓度值的废气。 通过将废气氧浓度水平保持在相对恒定的值，可以避免在瞬变期间等待低压EGR阀调节的滞后时间，并且系统的满足瞬变的空气处理响应可以仅通过调节空气质量来调节 提供（即升压响应）。 在第二种方法中，利用多阶段燃烧过程，其中燃料供给被控制在小的初步HCCI型燃烧事件中，以便产生用于第二主燃料的燃料的目标氧浓度 燃烧事件。 在第三种方法中，使用排气再呼吸来产生用于燃烧的充电 - 空气的目标氧浓度。
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公开(公告)号：US08061121B2
公开(公告)日：2011-11-22
申请号：US12291076
申请日：2008-11-06
申请人： David James Haugen
发明人： David James Haugen
IPC分类号： F01N3/00
CPC分类号： F02D19/087 , F02D19/0665 , F02D19/084 , Y02T10/22 , Y02T10/36
摘要： A flex fuel internal combustion engine system includes means for sensing ethanol concentration of the fuel. If the ethanol concentration is determined to be above a given threshold, engine operation is adjusted for lean combustion of the fuel. An aftertreatment system is provided to remove harmful emissions from the exhaust.
摘要翻译： 柔性燃料内燃机系统包括用于检测燃料的乙醇浓度的装置。 如果乙醇浓度被确定为高于给定的阈值，则调节燃料的稀燃燃烧的发动机运行。 提供后处理系统以消除排气中的有害排放物。
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