Method for adjusted air and fuel quantities for a multi-cylinder
internal combustion engine
    1.
    发明授权
    Method for adjusted air and fuel quantities for a multi-cylinder internal combustion engine 失效
    多缸内燃机调节空气和燃料量的方法

    公开(公告)号:US5095874A

    公开(公告)日:1992-03-17

    申请号:US679044

    申请日:1991-05-13

    IPC分类号: F02D43/00 F02D9/02 F02D41/04

    CPC分类号: F02D41/045 F02D43/00

    摘要: In a method for adjusting air and fuel masses for a multi-cylinder internal combustion engine with individual injection for each cylinder, the fuel mass for each injection operation is calculated taking into account the probable intake-pipe pressure during the opening time of the inlet valve. After a change of the accelerator pedal, the throttle flap is only adjusted when the fuel masses decisive for the new throttle-flap position have been calculated and substantially ejected. By virtue of the fact that fuel masses to be injected are not calculated taking into account the current air mass flow but taking into account the intake-pipe pressure, which is decisive in the induction operation, and that a change in the actuation of the throttle flap, which would lead to a change in the intake-pipe pressure not taken into account in the calculation of the injection quantity, is only permitted again after a recalculation, an optimum ratio between fuel mass and air mass per charge for the purpose of obtaining a specified value for the air/fuel ratio is always obtained, even in non-steady-state conditions of an internal combustion engine. Apart from the future intake-pipe pressure, account is also taken in the calculation of the fuel mass to be ejected of how much fuel passes into a wall film or is released from the latter.

    摘要翻译: PCT No.PCT / DE90 / 00560 Sec。 371日期1991年5月13日 102(e)日期1991年5月13日PCT提交1990年7月24日PCT公布。 WO91 / 04401 PCT出版物 日期:1991年4月4日。在用于为每个气缸单独喷射的多气缸内燃机的空气和燃料质量调节方法中,每次喷射操作的燃料质量被计算在考虑到可能的进气管压力 入口阀的打开时间。 在加速踏板改变之后,仅当已经计算出并且基本上弹出用于新的油门襟翼位置的燃料质量决定性时才调整节气门瓣。 由于考虑到当前的空气质量流量而是考虑到在感应操作中决定性的进气管压力而不计算要喷射的燃料块,并且油门的致动变化 在计算喷射量时,不会考虑到进气管压力的变化,在重新计算后,再次计算出燃料质量与每次充气的空气质量之间的最佳比例,才能获得 即使在内燃机的非稳态条件下,总是能够获得空燃比的规定值。 除了未来的进气管压力之外,还考虑了要排出多少燃料进入壁膜或从后者释放的燃料质量的计算。

    Method of checking the operability of a tank-venting system
    3.
    发明授权
    Method of checking the operability of a tank-venting system 失效
    检查排气系统的可操作性的方法

    公开(公告)号:US6105557A

    公开(公告)日:2000-08-22

    申请号:US358478

    申请日:1999-07-21

    IPC分类号: G01M3/26 F02M25/08 F02M33/02

    CPC分类号: F02M25/0818

    摘要: The invention is directed to a method for checking the operability of a tank-venting system. The tank-venting system includes a tank, an adsorption filter having a tank-venting line, a connecting line for connecting the adsorption filter to the tank, a tank-venting valve and a valve line connecting the adsorption filter to the tank-venting valve. A pressure source is provided for introducing a pressure into the tank-venting system, an operating characteristic variable of the pressure source is detected only over a pregiven time interval (.DELTA.t.sub.m) when introducing the pressure to obtain a time-dependent trace of the operating characteristic variable. The time-dependent trace is extrapolated and a conclusion is drawn as to the presence of a leak therefrom.

    摘要翻译: 本发明涉及一种用于检查罐排气系统的可操作性的方法。 排气系统包括一个罐,一个吸气过滤器,一个排气管,一个用于将吸附过滤器连接到油箱的连接管,一个油箱排放阀和一个将吸附过滤器连接到油箱排放阀 。 提供压力源以将压力引入到罐排放系统中,当引入压力以获得操作的时间依赖性痕迹时,压力源的操作特性变量仅在预制时间间隔(DELTA tm)上被检测 特征变量。 时间依赖的曲线被外推,并且得出关于其中存在泄漏的结论。

    Electronic system for controlling the fuel injection of an
internal-combustion engine
    5.
    发明授权
    Electronic system for controlling the fuel injection of an internal-combustion engine 失效
    用于控制内燃机燃油喷射的电子系统

    公开(公告)号:US5239974A

    公开(公告)日:1993-08-31

    申请号:US880049

    申请日:1992-05-07

    摘要: An electronic system for controlling the fuel injection of an internal-combustion engine based on the load, rotational speed, and temperature, as well as at least an oxygen probe reading in the exhaust pipe. The system determines basic injection-quantity signal as well as a transition-compensation signal to adapt the injection fuel quantity in situations of acceleration and deceleration. The system stores an engine characteristics map for a wall-film-quantity signal, and dividing factors for acceleration and deceleration. The system generates a correction value (Wkor) for the wall-film quantity signal and correction factors (FWS1kor, FWS2kor) for the two dividing factors. Three methods are provided for changing the correction factors in connection with the adaptation and these are based on a direct calculation, based on an estimation of the missing quantity and incremental calculation, and based on an incremental adjustment based on the evaluation of the oxygen-probe voltage.

    摘要翻译: 一种用于基于负载,转速和温度来控制内燃机的燃料喷射的电子系统,以及至少在排气管中的氧探头读数。 该系统确定基本喷射量信号以及过渡补偿信号,以适应加速和减速情况下的喷射燃料量。 系统存储壁数量信号的发动机特性图,以及加速和减速的分割因子。 系统为两个分割因子生成墙膜数量信号的校正值(Wkor)和校正因子(FWS1kor,FWS2kor)。 提供三种方法用于改变与适应相关的校正因子,并且这些方法基于基于缺失量和增量计算的估计的直接计算,并且基于基于氧探针的评估的增量调整 电压。

    Control system and method for metering the fuel in an internal
combustion engine
    7.
    发明授权
    Control system and method for metering the fuel in an internal combustion engine 失效
    用于计量内燃机燃料的控制系统和方法

    公开(公告)号:US5553593A

    公开(公告)日:1996-09-10

    申请号:US488355

    申请日:1995-06-07

    摘要: A control system is described for metering the fuel in an internal combustion engine. On the basis of the operating state of the internal combustion engine and a mixture correction signal for correcting the deviation of the air/fuel ratio from a desired value, a basic injection quantity signal is generated. A transition compensation signal is also generated while taking into account an adaptive correction factor. The adaptive correction factor is generated by comparing the mixture correction signal with a reference. The transition compensation signal is logically combined with the basic injection quantity signal to form a signal indicative of the quantity of fuel to be injected. In a second exemplary embodiment, the adaptive correction factor is determined by comparing the output signal of an exhaust gas sensor with a reference. In a third exemplary embodiment, both the mixture correction signal and the output signal of the exhaust gas sensor are included in the determination of the transition compensation signal.

    摘要翻译: 描述了用于计量内燃机中的燃料的控制系统。 基于内燃机的运行状态和用于校正空燃比与期望值的偏差的混合校正信号,生成基本喷射量信号。 在考虑了自适应校正因子的同时也产生过渡补偿信号。 通过将混合校正信号与参考值进行比较来产生自适应校正因子。 过渡补偿信号与基本喷射量信号逻辑地组合以形成指示要喷射的燃料量的信号。 在第二示例性实施例中,通过将排气传感器的输出信号与参考值进行比较来确定自适应校正因子。 在第三示例性实施例中,排气传感器的混合校正信号和输出信号都包括在转移补偿信号的确定中。

    Method and arrangement for determining a parameter of a lambda controller
    8.
    发明授权
    Method and arrangement for determining a parameter of a lambda controller 失效
    用于确定λ控制器的参数的方法和装置

    公开(公告)号:US5291873A

    公开(公告)日:1994-03-08

    申请号:US895550

    申请日:1992-06-08

    IPC分类号: F02D41/14 F02D45/00

    CPC分类号: F02D41/1486 F02D41/1483

    摘要: The invention is directed to a method for determining the particular current value of at least one control parameter for a lambda control of an internal combustion engine which provides a shift to make the fuel mixture lean or a shift to make the fuel mixture rich in dependence upon the operating state of the controlled engine. The method includes the steps of: determining a base value for the control parameter in dependence upon the current value of at least one pregiven operating variable as the current value applies for a control with a minimal discharge of toxic gas during steady-state operation of the engine; and, modifying the base value with a transition variable having a value decaying as a function of time when changes in the operating state of the engine occur. The method of the invention affords the advantage that the control parameter does not have a value which was applied for a minimum discharge of toxic gas for a typical operation sequence at steady-state or transient operation; instead, for steady-state and transient operations, optimized values are available. In this way, a discharge of exhaust gas is obtained which is lower compared to possibilities which have existed up until now.

    摘要翻译: 本发明涉及一种用于确定内燃机的λ控制的至少一个控制参数的特定电流值的方法,所述控制参数提供了使燃料混合物偏离或使燃料混合物富集的变化 受控发动机的运行状态。 该方法包括以下步骤:根据至少一个预定操作变量的当前值来确定控制参数的基值,因为当前值适用于在稳态运行期间具有最小排放有毒气体的控制 发动机; 以及当发生发动机的运行状态发生变化时,用具有衰减作为时间的函数的值的转换变量来修改基值。 本发明的方法提供的优点是,在稳态或瞬态操作中,控制参数不具有用于典型操作顺序的有毒气体的最小排放的值; 相反,对于稳态和瞬态操作,可以使用优化值。 以这种方式,获得与迄今为止存在的可能性相比较低的废气排放。

    Method and arrangement for controlling the air supply to an internal
combustion engine
    9.
    发明授权
    Method and arrangement for controlling the air supply to an internal combustion engine 失效
    用于控制向内燃机供气的方法和装置

    公开(公告)号:US5265570A

    公开(公告)日:1993-11-30

    申请号:US844621

    申请日:1992-03-30

    摘要: A method and an arrangement for controlling the air supply to an internal combustion engine of a motor vehicle are proposed with filtered values being generated for the control of the actuating element position from input values formed in dependence upon operating parameters of the internal combustion engine and/or of the motor vehicle as values to be filtered and in which the speed of change of the actuating element position is variable in accordance with the input of the values to be filtered and the filtered values, in particular their difference, by influencing the filter characteristic and the transmission behavior.

    摘要翻译: PCT No.PCT / DE90 / 00699 Sec。 371日期:1992年3月30日 102(e)1992年3月30日PCT 1990年9月12日PCT PCT。 公开号WO91 / 05155 提出了一种用于控制对机动车辆的内燃机的空气供给的方法和装置,其中产生滤波值以根据操作参数形成的输入值来控制致动元件位置 内燃机和/或机动车辆的值作为要过滤的值,并且其中致动元件位置的变化速度根据要滤波的值和滤波值的输入而变化,特别是它们 差异,通过影响滤波器特性和传输行为。

    Method and arrangement for simulating the dynamic performance of an
exhaust gas catalyzer
    10.
    发明授权
    Method and arrangement for simulating the dynamic performance of an exhaust gas catalyzer 失效
    模拟气体催化剂动态性能的方法和装置

    公开(公告)号:US5214915A

    公开(公告)日:1993-06-01

    申请号:US870262

    申请日:1992-04-17

    摘要: A method for simulating the time-dependent trace of the lambda value at the outlet of an exhaust gas catalyzer comprising measuring the air-mass flow inducted by the engine; computing the oxygen flow to the engine; determining the deviation .DELTA..lambda. of the lambda value forward of the catalyzer, the deviation being positive for a lean mixture and negative for a rich mixture; computing the oxygen partial flow flowing into the catalyzer; inputting the oxygen-storage capacity thresholds of the catalyzer; computing the simulated time-dependent trace of the lambda value at the outlet of the catalyzer, and comparing the simulated and the actual lambda values for correction of the thresholds and for an indication of catalyzer deterioration.

    摘要翻译: 一种用于模拟废气催化器出口处的λ值的时间依赖轨迹的方法,包括测量由发动机引入的空气质量流; 计算发动机的氧气流量; 确定催化剂向前的λ值的偏差DELTAλ,贫混合物的偏差为正,富浓混合物的偏差为正; 计算流入催化剂的氧气分流; 输入催化剂的储氧能力阈值; 计算催化剂出口处的λ值的模拟时间依赖曲线,并比较用于校正阈值的模拟和实际λ值以及催化剂劣化的指示。