Vehicle misfueling mitigation system and method
    91.
    发明授权
    Vehicle misfueling mitigation system and method 有权
    车辆失油缓解系统及方法

    公开(公告)号:US07768382B2

    公开(公告)日:2010-08-03

    申请号:US12098169

    申请日:2008-04-04

    摘要: A method is provided to indicate improper fuel filling in a vehicle. An indicator is actuated if a proportion of alcohol in the fuel is outside a range of expected proportions. In some examples, the range corresponds to a non-flex fuel vehicle recommended range, or to a normal range for a low alcohol-content fuel, which may be between 0 and 15 percent alcohol by volume. The indicator may include a diagnostic code or a dash light. Further, the indicator may be actuated in combination with a mitigating action, which may involve adjustment of a fuel injector pulse width or an ignition spark timing, as examples.

    摘要翻译: 提供了一种用于指示车辆中不正确的燃料填充的方法。 如果燃料中的一部分酒精超出预期的比例范围,则指示器被致动。 在一些示例中,该范围对应于非柔性燃料车辆推荐范围,或者对于低酒精含量燃料的正常范围,其可以为醇的0至15体积%。 指示器可以包括诊断代码或仪表灯。 此外,作为示例,可以结合减轻动作来致动指示器,该减轻动作可以包括调节燃料喷射器脉冲宽度或点火火花正时。

    System and method for boosted direct injection engine
    92.
    发明授权
    System and method for boosted direct injection engine 有权
    升压直喷发动机的系统和方法

    公开(公告)号:US07275516B1

    公开(公告)日:2007-10-02

    申请号:US11385105

    申请日:2006-03-20

    IPC分类号: F02B25/00 F02B29/06

    摘要: A method for operating and engine having a cylinder with at least an intake and exhaust valve, comprising of performing a combustion cycle in the cylinder in which exhaust valve closing occurs after intake valve opening thereby creating valve overlap, boosting intake air above exhaust pressure, where said boosted intake air is inducted into said cylinder while said intake valve is open and at least a first portion of said inducted boosted intake air flows past the exhaust valve with both said intake and exhaust valves are open during said overlap, directly injecting fuel to said cylinder that is combusted in said cylinder, where a beginning of said fuel injection occurs after said exhaust valve closing and said directly injected fuel is mixed with at least a second portion of said inducted boosted intake air, and combusting said mixture at a rich air-fuel ratio.

    摘要翻译: 一种具有至少具有进气门和排气门的气缸的操作和发动机的方法,包括在气缸中执行燃烧循环,其中在进气阀打开之后发生排气门关闭从而产生阀重叠,增加排气压力以上的进气,其中 所述增压进气在所述进气门打开时被引入所述气缸,并且所述进气增压进气的至少第一部分流过所述排气门,同时所述进气门和所述排气门都在所述重叠期间打开,直接将燃料喷射到所述 在所述气缸中燃烧的气缸,其中在所述排气门关闭之后发生所述燃料喷射的开始,并且所述直接喷射的燃料与所述引入的增压进气的至少第二部分混合,并且在富空燃比下燃烧所述混合物, 燃料比。

    Method for low emission vehicle starting with improved fuel economy
    96.
    发明授权
    Method for low emission vehicle starting with improved fuel economy 有权
    低排放车辆从燃油经济性提高的方法

    公开(公告)号:US06715280B2

    公开(公告)日:2004-04-06

    申请号:US10064433

    申请日:2002-07-12

    IPC分类号: F01N300

    摘要: A method for rapidly heating an emission control device in an engine exhaust uses excess air added to the exhaust via an air introduction device. After an engine cold start, the engine is operated to raise exhaust manifold temperature to a first predetermined value by operating the engine with a lean air-fuel ratio and retarded ignition timing. Once the exhaust manifold reaches the predetermined temperature value, the engine is switched to operate rich and air is added via the air introduction device. The added air and rich exhaust gas burn in the exhaust, thereby generating heat and raising catalyst temperature even more rapidly. The rich operation and excess air are continued until either engine airflow increases beyond a pre-selected value, or the emission control device reaches a desired temperature value. After the emission control device reaches the desired temperature, the engine is operated substantially around stoichiometry. Further, a method is described for adaptively learning pump airflow using feedback from an exhaust gas oxygen sensor.

    摘要翻译: 用于对发动机排气中的排放控制装置进行快速加热的方法通过空气引入装置使添加到排气中的多余的空气。 在发动机冷启动之后,通过以稀空燃比和延迟点火正时操作发动机来操作发动机以将排气歧管温度升高到第一预定值。 一旦排气歧管达到预定温度值,则发动机被切换以运行丰富,空气通过空气引入装置添加。 排气中增加的空气和浓缩的废气燃烧,从而更快地产生热量和提高催化剂温度。 丰富的操作和多余的空气继续进行,直到发动机气流增加超过预选值,或者排放控制装置达到期望的温度值。 在排放控制装置达到所需温度之后,发动机基本上以化学计量运行。 此外,描述了使用来自排气氧传感器的反馈自适应地学习泵送气流的方法。

    System for controlling air-fuel ratio during intake control device transitions
    97.
    发明授权
    System for controlling air-fuel ratio during intake control device transitions 失效
    在进气控制装置过渡期间控制空燃比的系统

    公开(公告)号:US06571771B2

    公开(公告)日:2003-06-03

    申请号:US09866341

    申请日:2001-05-25

    IPC分类号: F02M5100

    CPC分类号: F02D41/047 F02M26/46

    摘要: A method and system for controlling the fuel mass to be delivered to an individual cylinder of an internal combustion engine during engine transients caused by intake control device transitions. The method and system compensates for fuel transport dynamics and the actual fuel injected into the cylinder. A plurality of engine parameters are sensed, including cylinder air charge. An initial base desired fuel mass is determined based on the plurality of engine parameters. An initial transient fuel mass is also determined based on prior injection history which, in turn, is modified based on the transition of the intake control device for that cylinder. A desired injected fuel mass to be delivered to the cylinder is determined based on the initial base desired fuel mass and the initial transient fuel mass. These same calculations are then used to compensate for changes to the base desired fuel mass while the fuel injection is in progress, resulting in an updated desired injected fuel mass. Finally, the injection history for that cylinder is updated to account for the actual desired fuel mass delivered to the cylinder.

    摘要翻译: 一种用于控制在由进气控制装置转换引起的发动机瞬变期间将燃料质量输送到内燃机的单个气缸的方法和系统。 该方法和系统补偿燃料输送动力学和注入气缸的实际燃料。 感测到多个发动机参数,包括气缸空气充注。 基于多个发动机参数确定初始基本所需燃料质量。 初始瞬态燃料质量也是基于先前的喷射历史来确定的,而先前的喷射历程又是基于该气缸的进气控制装置的转变而改变的。 基于初始基本期望燃料质量和初始瞬态燃料质量确定要输送到气缸的期望喷射燃料质量。 然后使用这些相同的计算来补偿在燃料喷射进行期间对基本所需燃料质量的变化,导致更新的所需喷射燃料质量。 最后,更新该气缸的喷射历史,以解释输送到气缸的实际所需燃料质量。