利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

135 条记录 (耗时 0.017 秒)

    Lambda control by skip fire of unthrottled gas fueled engines
    72.
    发明授权
    Lambda control by skip fire of unthrottled gas fueled engines 失效
    Lambda通过无节流气体燃料发动机的火焰控制

    公开(公告)号：US5553575A

    公开(公告)日：1996-09-10

    申请号：US491275

    申请日：1995-06-16

    申请人： Niels J. Beck ,  Kresimir Gebert ,  Hoi C. Wong

    发明人： Niels J. Beck ,  Kresimir Gebert ,  Hoi C. Wong

    IPC分类号： F02B37/16 ,  F02B37/18 ,  F02D17/02 ,  F02D19/10 ,  F02D41/00 ,  F02D41/36 ,  F02B77/00

    CPC分类号： F02D41/0027 ,  F02B37/16 ,  F02B37/18 ,  F02D17/02 ,  F02D19/061 ,  F02D19/0631 ,  F02D19/0692 ,  F02D19/10 ,  F02D41/0087 ,  Y02T10/144 ,  Y02T10/36

    摘要： The performance of a gas-fueled unthrottled internal combustion engine is improved by optimizing excess air ratio (lambda) in the engine. Lambda is optimized by selecting automatically and continuously the optimum fraction of cylinders firing (OFF) as a function of engine operating parameters, eliminating the fuel charge from one or more cylinders to obtain firing in the OFF, and distributing the unused fuel to the OFF, thereby decreasing lambda in the firing cylinders to an optimum level. OFF may be calculated according to mathematically derived and empirically weighted equations, or obtained with reference to suitable look-up tables. In addition, optimum lambda and OFF may be adjusted to take into account the effects of exhaust gas recirculation (egr), engine speed, and/or engine timing. Further lambda adjustment can be performed by suitable control of egr, ignition timing, and/or turbo air bypass (TAB).

    摘要翻译： 通过优化发动机中的过量空气比（lambda），可以提高燃气节能型内燃机的性能。 通过根据发动机工作参数自动连续地选择气缸点火（OFF）的最佳分数，消除来自一个或多个气缸的燃料充电以在OFF中获得点火，并将未使用的燃料分配到OFF， 从而将燃烧气缸中的λ减小至最佳水平。 OFF可以根据数学派生和经验加权的方程计算，或参考适当的查找表获得。 此外，可以调节最佳的λ和OFF以考虑排气再循环（egr），发动机转速和/或发动机定时的影响。 可以通过适当地控制egr，点火正时和/或涡轮空气旁路（TAB）来进行进一步的λ调节。

    Air/fuel ratio control system for internal combustion engine
    73.
    发明授权
    Air/fuel ratio control system for internal combustion engine 失效
    内燃机空燃比控制系统

    公开(公告)号：US5178121A

    公开(公告)日：1993-01-12

    申请号：US858741

    申请日：1992-03-27

    申请人： Shinichi Kitajima ,  Yoshihiko Kobayashi

    发明人： Shinichi Kitajima ,  Yoshihiko Kobayashi

    IPC分类号： F02D19/08 ,  F02D41/00 ,  F02D41/14 ,  F02M25/06

    CPC分类号： F02D41/003 ,  F02D19/0631 ,  F02D19/084 ,  F02D19/087 ,  F02D41/0025 ,  F02D41/1487 ,  F02D2250/08 ,  Y02T10/36

    摘要： A system for controlling an air/fuel ratio of an internal combustion engine supplied with a blended fuel of gasoline and alcohol and equipped with a blowby gas ventilator. An oxygen sensor is provided and an amount of fuel supply is corrected in response to the detected air/fuel ratio within a range having a lower limit set in the lean direction and an upper limit set in the rich direction. At engine starting, injected alcohol may not vaporize but leak into the crankcase and will then vaporize to pass into the air intake passage along with the blowby gas when the engine temperature rises, causing the air/fuel ratio to be become rich beyond the correction lower limit. For that reason, in this system, engine coolant temperature and alcohol content in the fuel are detected. And if the temperature is within a range defined from the alcohol boiling point when the alcohol content is above a reference value, the lower limit of the range is shifted in the leaner direction. The air/fuel ratio can therefore be corrected in the lean direction.

    摘要翻译： 一种用于控制供给汽油和酒精的混合燃料并装备有窜气通气机的内燃机的空燃比的系统。 提供氧传感器，并且响应于在倾斜方向上设定的下限和在富方向上设定的上限的范围内的检测到的空气/燃料比来校正燃料供应量。 在发动机启动时，注入的醇可能不会蒸发，但会泄漏到曲轴箱中，然后随着发动机温度升高时的排气气体会蒸发进入进气通道，导致空气/燃油比变得超过校正值 限制。 因此，在该系统中，检测到燃料中的发动机冷却剂温度和酒精含量。 而当酒精含量高于参考值时，如果温度在从醇沸点定义的范围内，则该范围的下限在较冷的方向上移动。 因此，可以在倾斜方向上校正空气/燃料比。

    Method and apparatus for controlling an engine capable of operating on more than one type of fuel
    79.
    发明授权
    Method and apparatus for controlling an engine capable of operating on more than one type of fuel 有权
    用于控制能够对多于一种类型的燃料进行操作的发动机的方法和装置

    公开(公告)号：US08126634B2

    公开(公告)日：2012-02-28

    申请号：US13108367

    申请日：2011-05-16

    申请人： Andrew Vestrini ,  Anthony Peter Bell ,  Anthony James Peck ,  Ralph Purvis

    发明人： Andrew Vestrini ,  Anthony Peter Bell ,  Anthony James Peck ,  Ralph Purvis

    IPC分类号： F02D41/30 ,  F02D28/00 ,  F02M25/07

    CPC分类号： F02D41/0025 ,  F02D19/061 ,  F02D19/0631 ,  F02D19/088 ,  F02D41/1456 ,  F02D2200/0612 ,  Y02T10/36

    摘要： A control system for an engine capable of operating on more than one type of fuel includes an engine control unit that determines a default fuel volume to be injected into the engine based on relevant engine parameters and characteristics of a default fuel type. A default mass fuel flow rate is derived from the default fuel volume and relevant engine parameters. The actual mass fuel flow rate into the engine is inferred from the mass air flow rate into the engine and the exhaust gas air-to-fuel ratio, which is determined using a wide range oxygen sensor. A fuel correction factor is calculated from the default mass fuel flow rate and the inferred mass fuel flow rate. The fuel correction factor is used to increment or decrement the default fuel volume in a subsequent fuel injection cycle thereby incrementing or decrementing the inferred mass fuel flow rate toward the default mass fuel flow rate.

    摘要翻译： 用于能够在多种燃料上操作的发动机的控制系统包括：发动机控制单元，其基于相关的发动机参数和默认燃料类型的特性来确定要注入发动机的默认燃料量。 默认质量燃料流量来自默认燃油量和相关发动机参数。 进入发动机的实际质量燃料流量从使用大范围氧传感器确定的进入发动机的质量空气流量和排气空气 - 燃料比推定。 根据默认质量燃料流量和推定的质量燃料流量计算燃料校正系数。 燃料校正因子用于在随后的燃料喷射循环中增加或减少默认燃料体积，从而将推断的质量燃料流量增加或减少到默认质量燃料流量。

    SYSTEM AND METHOD OF INJECTING COMBUSTIBLE GAS IN LIQUID FORM INTO A DIESEL ENGINE
    80.
    发明申请
    SYSTEM AND METHOD OF INJECTING COMBUSTIBLE GAS IN LIQUID FORM INTO A DIESEL ENGINE 有权
    将液体燃料中的可燃气体注入柴油发动机的系统和方法

    公开(公告)号：US20110073072A1

    公开(公告)日：2011-03-31

    申请号：US12821854

    申请日：2010-06-23

    申请人： Keith Murray RUMBEL ,  Derek Robert WATKINS

    发明人： Keith Murray RUMBEL ,  Derek Robert WATKINS

    IPC分类号： F02M69/04

    CPC分类号： F02M21/0287 ,  F02D19/061 ,  F02D19/0631 ,  F02D19/0689 ,  F02D19/081 ,  F02D19/10 ,  Y02T10/32 ,  Y02T10/36

    摘要： The present invention discloses a method of introducing fuel into a diesel engine for combustion within the engine. A combustible gas in liquid form is injected into the engine for combustion therein with diesel fuel so as to maintain a combustible gas concentration derived from the liquid in the range of 0.2%-0.6% of air intake by volume of combustible gas. Suitable gases include LPG or liquid petroleum gas, natural gas, hydrogen, ethane, methane, propane, butane, hexane, heptane, pentane, acetylene, carbon monoxide, ammonia or other combustible gas, or a combination of two or more thereof.

    摘要翻译： 本发明公开了一种将燃料引入柴油发动机以在发动机内进行燃烧的方法。 将液体形式的可燃气体注入发动机用于燃烧柴油燃料，以便将来自液体的可燃气体浓度保持在可燃气体体积的进气量的0.2％-0.6％的范围内。 合适的气体包括LPG或液化石油气，天然气，氢气，乙烷，甲烷，丙烷，丁烷，己烷，庚烷，戊烷，乙炔，一氧化碳，氨或其他可燃气体，或其两种或多种的组合。