Apparatus for venting a fuel tank
    1.
    发明授权
    Apparatus for venting a fuel tank 失效
    燃油箱排气装置

    公开(公告)号:US4683861A

    公开(公告)日:1987-08-04

    申请号:US822012

    申请日:1986-01-24

    摘要: An apparatus is disclosed for venting a fuel tank of internal combustion engines or the like, wherein fuel vapors developing in the tank are received in an intermediate storage unit containing an activated carbon filter and are delivered to the induction area of the engine in dependence upon operating conditions. The delivery is accomplished by an electrically controlled tank venting valve having a pass-through opening the cross section of which is continuously changed. This is achieved by changing the pulse duty factor of the drive pulse train for this valve. The pulse duty factor may be determined in the sense of a pure control using a family of characteristic fields in dependence on rotational speed and load of the engine, or by taking into account preferably averaged Lambda values with a reduction in the cross section of the pass-through opening of the tank vent valve as the mixture becomes richer. Further, an adaptive anticipatory control is provided which enters into the calculation of the fuel quantity to be supplied or of the fuel injection signal with a correction value (ATE) and switches over to a limit control when predetermined mixture proportions are reached. The basic adaptation in the Lambda control system for calculating the fuel supply is released only if the fuel quantities originating from tank venting are negligible.

    摘要翻译: 公开了一种用于排放内燃机等的燃料箱的装置,其中在罐中形成的燃料蒸汽被接收在包含活性炭过滤器的中间储存单元中,并根据操作被输送到发动机的感应区域 条件。 输送通过具有贯穿开口的电控罐排放阀来完成,其横截面不断变化。 这是通过改变该阀的驱动脉冲序列的脉冲占空比来实现的。 脉冲占空因数可以在纯控制的意义上使用一系列特征场来确定,这些特征场依赖于发动机的转速和负载,或者考虑到平均的λ值,其中通过横截面的减小 通过打开罐排气阀,因为混合物变得更加丰富。 此外,提供了一种自适应预测控制,其进入计算要供应的燃料量或具有校正值(ATE)的燃料喷射信号,并且当达到预定的混合比例时切换到极限控制。 仅当来自罐排气的燃料量可忽略不计时,用于计算燃料供应的Lambda控制系统的基本适应才被释放。

    Arrangement for a fuel metering system for an internal combustion engine
    2.
    发明授权
    Arrangement for a fuel metering system for an internal combustion engine 失效
    一种用于内燃机的燃料计量系统的装置

    公开(公告)号:US4584982A

    公开(公告)日:1986-04-29

    申请号:US667019

    申请日:1984-11-01

    CPC分类号: F02D41/1454 F02D41/2454

    摘要: The invention is directed to an arrangement for a fuel metering system for an internal combustion engine. The arrangement includes a computer unit for generating a fuel metering signal in dependence on the operating parameters of the internal combustion engine. The arrangement includes an oxygen sensor and a filter to which the sensor signal is applied, and a subsequent evaluation circuit for additionally influencing the fuel metering signal, preferably in a multiplicative manner. The filter output quantity and engine speed information are utilized together for an additional additive speed-dependent and an additive speed-independent influencing of the fuel metering signal via at least one control function. This arrangement permits a nearly ideal anticipatory control of the fuel metering signal which has an advantageous effect on the engine operating behavior and the exhaust gas quality, in particular with the internal combustion engine in a state of transition and the lambda control circuit deactivated.

    摘要翻译: 本发明涉及一种用于内燃机的燃料计量系统的装置。 该装置包括用于根据内燃机的操作参数产生燃料计量信号的计算机单元。 该装置包括氧传感器和应用传感器信号的过滤器,以及用于另外影响燃料计量信号的后续评估电路,优选以乘法方式。 过滤器输出量和发动机速度信息一起用于经由至少一个控制功能的燃料计量信号的附加速度依赖性和与速度无关的附加影响。 这种布置允许对燃料计量信号的几乎理想的预期控制,其对发动机操作特性和排气质量具有有利的影响,特别是在处于转换状态的内燃机和拉姆控制电路停用时。

    Lambda-controlled mixture metering arrangement for an internal
combustion engine
    3.
    发明授权
    Lambda-controlled mixture metering arrangement for an internal combustion engine 失效
    用于内燃机的λ控制混合计量装置

    公开(公告)号:US4671244A

    公开(公告)日:1987-06-09

    申请号:US708269

    申请日:1985-03-05

    IPC分类号: F02D41/14 F02D45/00

    摘要: The invention is directed to a mixture metering arrangement for an internal combustion engine and includes an exhaust-gas sensor which is exposed to the exhaust gas of the internal combustion engine. The exhaust-gas sensor indicates the air ratio lambda and preferably has a two-level characteristic. The sensor output signals are acted upon by a follow-on controller which is preferably a PI-controller. The controller output quantity acts upon the mixture composition in a corrective fashion. In this arrangement, the control oscillation of the controller output quantity is adjusted to a predetermined amplitude by means of a superposed control. In particular, the integral component of the control oscillation is influenced in a manner causing it to have the same amplitude as the proportional component while in the steady operating condition. Thus, it is possible to maintain the maximum control frequency in any operating range of the internal combustion engine so that the controller always operates at its optimum. In addition, the effects of deviations occurring from one engine to another or from one exhaust-gas sensor to another as well as of long-term variations are suppressed.

    摘要翻译: 本发明涉及一种用于内燃机的混合计量装置,并且包括暴露于内燃机的废气的废气传感器。 排气传感器表示空气比λ,优选具有两级特性。 传感器输出信号由优选为PI控制器的后续控制器起作用。 控制器输出量以纠正方式作用于混合物组成。 在这种布置中,通过叠加控制将控制器输出量的控制振荡调整到预定的幅度。 特别地,在稳定运行状态下,控制振荡的积分分量受到影响,使其具有与比例分量相同的振幅。 因此,可以在内燃机的任何操作范围内保持最大控制频率,使得控制器总是以其最佳运行。 此外,抑制了从一个发动机到另一个发动机或从一个废气传感器到另一个排气传感器到另一个排气传感器的偏差的影响以及长期变化。

    System for damping bucking oscillations of an automobile engine
    4.
    发明授权
    System for damping bucking oscillations of an automobile engine 失效
    汽车发动机减震摆动系统

    公开(公告)号:US4527523A

    公开(公告)日:1985-07-09

    申请号:US545531

    申请日:1983-10-26

    摘要: Fluctuations of engine speed in the frequency range from 2 to 8 Hz, which produce "bucking" behavior of a motor vehicle, are detected by passing engine speed signals through a filter which reduces and delays the oscillations and a difference signal is then produced between the original and the processed speed signal in order to derive an alternating signal in the form of a square wave indicating the sign of a correction to be made to engine ignition timing for counteracting the bucking oscillations of engine speed. The square wave determines the sign of an anti-bucking ignition timing correction factor, of which the absolute value may be constant or may vary according to the sign of the correction and, if desired, also in accordance with engine operation parameters.

    摘要翻译: 通过使发动机速度信号通过滤波器来检测在2至8Hz的频率范围内的发动机速度的波动,其产生机动车辆的“弯曲”行为,其减小并延迟振荡,并且随后产生差异信号 原始和处理后的速度信号,以便导出一个方波形式的交替信号,该方波指示要对发动机点火正时进行校正的符号,以抵消发动机转速的起伏振荡。 方波确定了抗弯曲点火正时校正因子的符号,其绝对值可以是恒定的,或者可以根据校正的符号以及如果需要也根据发动机操作参数而变化。

    METHOD FOR FLUSHING AN ACTIVATED CARBON FILTER
    5.
    发明申请
    METHOD FOR FLUSHING AN ACTIVATED CARBON FILTER 审中-公开
    用于冲洗活性炭过滤器的方法

    公开(公告)号:US20120279480A1

    公开(公告)日:2012-11-08

    申请号:US13503107

    申请日:2010-10-29

    申请人: Ernst Wild

    发明人: Ernst Wild

    IPC分类号: F02M33/02

    CPC分类号: F02M25/0818

    摘要: In a method for flushing an activated carbon filter of a tank ventilation system of an internal combustion engine, which tank ventilation system includes a fuel tank and an activated carbon filter with which a tank shut-off valve TAV, a fuel tank vent valve TEV, and an activated carbon filter shut-off valve AAV are associated, the tank shut-off valve TAV is closed, the fuel tank vent valve TEV is opened, and the activated carbon filter shut-off valve AAV is closed. The activated carbon filter shut-off valve AAV is controlled to close in a clocked manner.

    摘要翻译: 在一种用于冲洗内燃机的箱式通风系统的活性炭过滤器的方法中,所述罐式通风系统包括燃料箱和活塞式碳过滤器,罐式切断阀TAV,燃料箱排放阀TEV, 并关闭活塞式碳过滤器截止阀AAV,油箱关闭阀TAV关闭,燃油箱排气阀TEV打开,活塞式碳过滤器截止阀AAV关闭。 活性炭过滤器截止阀AAV被控制为以时钟方式关闭。

    Method and device for operating an internal combustion engine
    6.
    发明授权
    Method and device for operating an internal combustion engine 有权
    用于操作内燃机的方法和装置

    公开(公告)号:US07188605B2

    公开(公告)日:2007-03-13

    申请号:US11084521

    申请日:2005-03-18

    IPC分类号: F02D41/30

    摘要: A method and a device for operating an internal combustion engine are provided, which allow a continuous limiting of the output of the internal combustion engine upon attaining a maximally possible injection duration of an injection valve. The internal combustion engine has at least one actuator for influencing the output of the internal combustion engine and at least one injection valve for supplying fuel to the combustion engine. A maximally possible injection duration for an injection procedure of the at least one injection valve is determined. A variable characterizing the output of internal combustion engine is limited as a function of the maximally possible injection duration by corresponding adjustment of the at least one actuator.

    摘要翻译: 提供了一种用于操作内燃机的方法和装置,其允许在获得喷射阀的最大可能的喷射持续时间时连续限制内燃机的输出。 内燃机具有至少一个致动器,用于影响内燃机的输出和用于向燃烧发动机供应燃料的至少一个喷射阀。 确定至少一个喷射阀的喷射程序的最大可能的喷射持续时间。 通过相应地调节至少一个致动器,表征内燃机的输出的变量被限制为最大可能的喷射持续时间的函数。

    Method for the reliable operation of a brake booster system, brake booster system, and circuit therefor for implementing the method
    8.
    发明授权
    Method for the reliable operation of a brake booster system, brake booster system, and circuit therefor for implementing the method 有权
    制动助力系统,制动助力系统及其电路的可靠运行方法,用于实施该方法

    公开(公告)号:US06871918B2

    公开(公告)日:2005-03-29

    申请号:US10207362

    申请日:2002-07-29

    IPC分类号: B60T13/72 B60T17/18 B60T8/88

    CPC分类号: B60T13/72 B60T17/18

    摘要: A method and system for ensuring reliable operation of a brake booster system for a vehicle braking system in which a pressure value prevailing in the brake pressure reservoir of the brake booster system is sensed by a pressure sensor. An error occurring in the brake booster system is detected by evaluating the sensed pressure value prevailing in the brake pressure reservoir as a function of the actuation of the brake actuating mechanism. The brake booster system includes a diagnostic circuit that is connected to the pressure sensor and to the brake actuating mechanism.

    摘要翻译: 一种用于确保用于车辆制动系统的制动助力系统的可靠运行的方法和系统,其中通过压力传感器感测到制动助力器系统的制动压力贮存器中的压力值。 通过根据制动器致动机构的致动来评估制动压力储存器中主要的感测压力值来检测制动助力系统中发生的错误。 制动助力系统包括连接到压力传感器和制动器致动机构的诊断电路。

    Method for determining the load signal of an internal combustion engine
having external exhaust-gas recirculation
    10.
    发明授权
    Method for determining the load signal of an internal combustion engine having external exhaust-gas recirculation 失效
    用于确定具有外部排气再循环的内燃机的负载信号的方法

    公开(公告)号:US5889203A

    公开(公告)日:1999-03-30

    申请号:US877798

    申请日:1997-06-18

    CPC分类号: F02D41/0072 Y02T10/47

    摘要: The invention is directed to a method for determining a load signal of an internal combustion engine having an intake pipe with a pressure sensor, external exhaust-gas recirculation (EGR) and an EGR valve. A load signal (tl) is computed in a circuit arrangement which is proportional to the mass inducted per revolution of the engine. The computation is made in dependence upon measured intake-pipe pressure (ps) and the speed (n) of the engine in rpm. On the one hand, the method makes a simple adaptation possible, while, on the other hand, a correct load signal is formed also in steady-state operation and, in this way, reduced exhaust-gas emissions of the engine are made possible. The exhaust-gas mass flow flowing through the EGR valve is determined by converting the exhaust-gas mass flow into an rpm-dependent signal. The rpm-dependent signal is filtered in a filter simulating charging operations in the intake pipe. A corrective signal (scorr) proportional to the exhaust-gas mass inducted by the engine per revolution thereof is determined and this corrective signal (scorr) is subtracted from the load signal (tl) to generate and output the corrected load signal (tlcorr).

    摘要翻译: 本发明涉及一种用于确定具有带有压力传感器,外部排气再循环(EGR)和EGR阀的进气管的内燃机的负载信号的方法。 负载信号(t1)以与发动机每转转动的质量成比例的电路装置来计算。 根据测量的进气管压力(ps)和发动机的转速(n)以rpm计算。 一方面,该方法能够进行简单的适应,另一方面,在稳态运行中也形成正确的负载信号,从而能够减少发动机的废气排放。 流经EGR阀的排气质量流量通过将废气质量流转换成与转速相关的信号来确定。 转速相关信号在模拟进气管中的充气操作的过滤器中进行过滤。 确定与每转一次由发动机引入的排气质量成比例的校正信号(scorr),并从负载信号(t1)中减去该校正信号(scorr),以产生并输出校正的负载信号(tlcorr)。