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公开(公告)号：US4132195A
公开(公告)日：1979-01-02
申请号：US812037
申请日：1977-07-01
CPC分类号： F02D41/182 , F02D35/0092 , F02M69/18
摘要： The fuel mixture ratio of an internal combustion engine is adjusted by metering out a fuel quantity in relation to the air flow rate through the induction tube. The air flow rate is measured indirectly by monitoring the engine speed (rpm) with an electrical transducer driving a frequency-voltage converter, thus providing a first voltage, while a throttle plate position transducer generates a second voltage. The two voltages are applied to a logical circuit including parallel diodes which selects the lower of the applied signals and presents the resultant voltage as the primary control signal for fuel metering. Various compensating networks may be added to provide additional smoothing and adaptation to the operating characteristics of a particular engine and state of operation. Various fuel metering devices to be used in conjunction with the control circuit are also described.
摘要翻译： 通过计量相对于通过感应管的空气流量的燃料量来调节内燃机的燃料混合比。 通过用驱动频率 - 电压转换器的电传感器监测发动机转速（rpm）来间接地测量空气流量，从而提供第一电压，同时节流板位置传感器产生第二电压。 这两个电压被施加到包括并联二极管的逻辑电路，该并联二极管选择所施加的信号中的较低者，并将合成的电压作为燃料计量的主要控制信号。 可以添加各种补偿网络以提供额外的平滑和适应特定发动机的操作特性和操作状态。 还描述了与控制电路结合使用的各种燃料计量装置。
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公开(公告)号：US4182295A
公开(公告)日：1980-01-08
申请号：US954146
申请日：1978-10-24
CPC分类号： F02M23/00 , Y02T10/146
摘要： A fuel supply mechanism for an internal combustion engine includes a fuel-air mixture generator and an air bypass channel for conducting supplementary air to the mixture prior to delivery to the cylinders. The bypass channel has a valve which is coupled to the main throttle valve in the induction manifold. The coupling may be entirely mechanical or electro-mechanical. In addition, a controller which acts on the basis of engine information changes the degree of coupling between the main throttle and the bypass valve to admit more or less supplementary air, depending on the value of engine variables.
摘要翻译： 用于内燃机的燃料供给机构包括燃料 - 空气混合物发生器和空气旁路通道，用于在输送到气缸之前将辅助空气传送到混合物。 旁路通道具有连接到进气歧管中的主节流阀的阀。 联轴器可以是完全机械的或机电的。 此外，根据发动机信息的作用的控制器根据发动机变量的值改变主节流阀和旁通阀之间的联接程度，以允许或多或少地补充空气。
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3.发明授权
公开(公告)号：US4112879A
公开(公告)日：1978-09-12
申请号：US661006
申请日：1976-02-24
申请人： Jurgen Assenheimer , Valerio Bianchi , Johannes Brettschneider , Reinhard Latsch , Dieter Scherenberg
发明人： Jurgen Assenheimer , Valerio Bianchi , Johannes Brettschneider , Reinhard Latsch , Dieter Scherenberg
IPC分类号： F02D41/34 , F02D41/14 , F02D41/18 , F02D45/00 , G01F1/28 , G01F1/38 , G01F1/68 , G01L9/00 , G01L9/04 , G01L9/10 , G01L23/24 , G01M15/04 , G01M15/09 , G05B13/02 , F02B3/00
CPC分类号： G01L9/0051 , F02D41/1498 , F02D41/182 , F02D41/187 , G01F1/28 , G01F1/38 , G01F1/68 , G01L23/24 , G01L9/007 , G01L9/04 , G01L9/10 , G01M15/042 , G01M15/09 , G05B13/02 , F02D2200/1015
摘要： A process for controlling the operation of an internal combustion engine based on the volumetric efficiency of the engine to define a primary nominal fuel quantity. The process also includes measuring the fluctuations in the volumetric efficiency. In order to operate the engine in a preferred leaned-out condition, a nominal set-point value of the permitted range of fluctuations of the volumetric efficiency is established and the actual measured fluctuations are maintained in that range by changing the fuel metered out to the engine.Various methods for measuring the volumetric efficiency indirectly by pressure measurements in the induction tube are presented.
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4.发明授权
公开(公告)号：US4188920A
公开(公告)日：1980-02-19
申请号：US813053
申请日：1977-07-05
申请人： Valerio Bianchi , Reinhard Latsch
发明人： Valerio Bianchi , Reinhard Latsch
CPC分类号： F02D41/1498 , F02D2200/1015 , F02D41/0052
摘要： The fluctuations of the rotational speed of the engine crankshaft are detected by two torsionally coupled inertial discs with fiducial markers. The movement of these markers past an inductive sensor provides a signal which is fed to a logical control circuit that controls the generation of a voltage which is characteristic of the actual crankshaft fluctuations. This actual voltage is amplified and rectified and compared with a set-point voltage generated by a set-point generator. The resulting signal is used to control an integrating circuit which may engage the fuel injection system of the exhaust gas recycling system of the engine to change the fuel-air mixture so as to return the actual voltage value to the set-point value.
摘要翻译： 发动机曲轴的转速的波动由具有基准标记的两个扭转耦合的惯性盘检测。 这些标记通过电感式传感器的运动提供了一个信号，该信号被馈送到逻辑控制电路，该逻辑控制电路控制产生实际曲轴波动特征的电压。 该实际电压被放大并整流，并与设定点发生器产生的设定点电压进行比较。 所得到的信号用于控制积分电路，该积分电路可与发动机的废气再循环系统的燃料喷射系统接合，以改变燃料 - 空气混合物，以将实际电压值返回到设定值。
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5.发明授权
公开(公告)号：US4133320A
公开(公告)日：1979-01-09
申请号：US638092
申请日：1975-12-05
申请人： Valerio Bianchi , Reinhard Latsch
发明人： Valerio Bianchi , Reinhard Latsch
CPC分类号： F02D41/3005 , F02D41/1487
摘要： A fuel metering system of an internal combustion engine is controlled by an analog computer circuit which delivers injection pulses to actuate the fuel injection valves of the engine. The duration of these pulses is directly related to the amount of injected fuel and depends partly on the inherent electrical characteristics of the components of the analog computer circuit. The pulse duration also depends on the instantaneous values of at least two engine parameters, r.p.m. and throttle valve position, i.e., the degree of opening of the air inlet valve. The r.p.m. signal is sensed by an appropriate transducer and triggers a monostable multivibrator in the analog computer circuit while the throttle valve position is sensed by a potentiometer and defines the charging rate of a capacitor. The voltage on the capacitor influences the action of the monostable multivibrator which delivers the fuel injection pulse. A multiplier circuit may be connected between the analog circuit and the injection valves for admitting corrective control signals, e.g., from an exhaust gas sensor or from an engine smoothness sensor.
摘要翻译： 内燃机的燃料计量系统由模拟计算机电路控制，模拟计算机电路输送喷射脉冲以致动发动机的燃料喷射阀。 这些脉冲的持续时间与注入的燃料的量直接相关，并且部分地取决于模拟计算机电路的部件的固有电特性。 脉冲持续时间还取决于至少两个发动机参数的瞬时值r.p.m。 和节气门位置，即进气阀的开度。 r.p.m. 信号由适当的传感器感测并触发模拟计算机电路中的单稳态多谐振荡器，同时通过电位计感测节气门位置并定义电容器的充电速率。 电容器上的电压影响输送燃料喷射脉冲的单稳态多谐振荡器的作用。 模拟电路和喷射阀之间可以连接一个乘法器电路，用于允许校正控制信号，例如来自废气传感器或来自发动机平滑度传感器。
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公开(公告)号：US4346625A
公开(公告)日：1982-08-31
申请号：US212769
申请日：1980-12-04
申请人： Reinhard Latsch , Valerio Bianchi
发明人： Reinhard Latsch , Valerio Bianchi
CPC分类号： F02D35/00 , F02D29/02 , Y10T477/679 , Y10T477/68
摘要： The fuel-air mixture of an engine in a motor vehicle is controlled on the basis of a signal related to the fluctuations in the cyclic variations of the average combustion chamber pressure. This signal is derived indirectly from a sensor which monitors the rotational speed of engine members, e.g. the crankshaft. In order to provide closed-loop control, there is provided a reference value which is adapted continuously to changing engine speed. In addition, a correction of the reference signal is made to account for varying degrees of damping induced by changing inertial masses coupled to the engine, in particular the elements of the transmission connected between the engine and the vehicle. The correction for damping is made on the basis of signals related to the prevailing gear ratio either by direct indication of the gearshift lever position or by measuring the rotational speeds of the input and output shafts of the transmission.
摘要翻译： 基于与平均燃烧室压力的循环变化的波动相关的信号来控制机动车辆中的发动机的燃料 - 空气混合物。 该信号间接地从监测发动机构件的转速的传感器导出，例如， 曲轴。 为了提供闭环控制，提供了连续适应于改变发动机转速的参考值。 此外，对参考信号进行校正以考虑到通过改变耦合到发动机的惯性质量，特别是连接在发动机和车辆之间的变速器的元件而引起的不同程度的阻尼。 通过直接指示换档杆位置或通过测量变速器的输入和输出轴的转速，根据与主要齿轮比相关的信号进行阻尼校正。
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公开(公告)号：US4064846A
公开(公告)日：1977-12-27
申请号：US659495
申请日：1976-02-19
申请人： Reinhard Latsch , Valerio Bianchi
发明人： Reinhard Latsch , Valerio Bianchi
CPC分类号： F02P5/1455 , F02D41/1408 , G05B13/0225 , F02B1/04 , Y02T10/46
摘要： A control apparatus for an internal combustion engine performs cyclic modulations of an operational parameter of the engine, for example by periodic leaning out of the fuel-air mixture to some of the engine's cylinders. The resulting changes in angular acceleration of the crankshaft are sensed by an electro-inductive transducer and the elapsed time between successive pulses so generated is measured. Depending on whether the change in acceleration is positive or negative, the circuit generates an appropriate control signal which may be used to steer a final control element which moves the center of modulation, i.e., the operational point of the engine, toward an optimum value of, for example, the fuel-air ratio.
摘要翻译： 用于内燃机的控制装置例如通过从燃料 - 空气混合物周期性地倾斜到一些发动机气缸中来执行发动机的操作参数的循环调制。 曲轴的角加速度的变化由电感换能器检测，并测量如此产生的连续脉冲之间的经过时间。 取决于加速度的变化是正还是负，电路产生一个适当的控制信号，该控制信号可用于引导将调制中心即发动机的运行点移动到最佳值的最终控制元件 ，例如，燃料 - 空气比。
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8.发明授权
公开(公告)号：US4134374A
公开(公告)日：1979-01-16
申请号：US804023
申请日：1977-06-06
申请人： Reinhard Latsch , Valerio Bianchi , Hans Zeller
发明人： Reinhard Latsch , Valerio Bianchi , Hans Zeller
CPC分类号： G01M15/11 , G01M15/046 , G01P15/165 , F02B2075/027 , F02D2200/1015
摘要： A method and apparatus for detecting cylinder malfunction by monitoring the actual rotational speed in an internal combustion engine, e.g. with an inductive transducer. This signal is compared in phase with pulses from a voltage controlled oscillator, the control voltage of which comes from an integrating circuit driven by the phase comparison signal in the manner of a phase-locked loop.The VCO pulses are used to clock a shift register and the actual pulses provide the data input for the shift register. Thus, the relative arrival time of the two pulse trains determines the contents of the shift register. Decoding circuitry is used to interrogate the shift register and to actuate an output device when the contents of the register indicate an unsymmetric periodicity, caused by cylinder malfunction.
摘要翻译： 一种用于通过监测内燃机的实际转速来检测气缸故障的方法和装置，例如， 与感应传感器。 该信号与来自压控振荡器的脉冲相比较，其控制电压来自由相位比较信号以锁相环的方式驱动的积分电路。
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公开(公告)号：US4099493A
公开(公告)日：1978-07-11
申请号：US664396
申请日：1976-03-05
申请人： Reinhard Latsch , Valerio Bianchi
发明人： Reinhard Latsch , Valerio Bianchi
CPC分类号： F02D35/023 , F02D41/1498 , F02D2200/1015
摘要： An internal combustion engine is operated in the lean-running condition where measurable engine roughness occurs. The degree of this engine roughness, which is due to fluctuations in acceleration, is measured and compared with set-point values in a fuel metering control loop. In order to prevent undesirable control characteristics, the effect of positive changes in acceleration is prevented from engaging the final control element by a switching element which interrupts the signal flow to the final control element during positive changes in engine accelerations.
摘要翻译： 内燃机在发生可测量的发动机粗糙度的稀薄运行状态下运行。 由于加速度的波动引起的发动机粗糙度的程度被测量并与燃料计量控制回路中的设定值进行比较。 为了防止不期望的控制特性，防止加速度的正变化的影响通过在发动机加速度的正变化期间中断到最终控制元件的信号流的开关元件与最终控制元件接合。
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10.发明授权
公开(公告)号：US4044236A
公开(公告)日：1977-08-23
申请号：US659538
申请日：1976-02-19
申请人： Valerio Bianchi , Peter Schmidt , Reinhard Latsch
发明人： Valerio Bianchi , Peter Schmidt , Reinhard Latsch
CPC分类号： F02D41/1498 , G01L23/08 , G01M15/046 , F02D2200/1015
摘要： The operation of an internal combustion engine in the region of its lean-running limit is controlled on the basis of engine roughness as measured by an inductive crankshaft transducer. Its periodic signal gates the counting in a digital down-counter, from a pre-set number, at a frequency proportional to r.p.m. The content of the down counter is counted up or down in a subsequent up-down counter depending on the value of its own most significant bit which indicates the algebraic sign of the phase comparison between the transducer frequency and the r.p.m.-proportional frequency. Two digital integrating stages eliminate effects due to constant engine acceleration. A decoder supplies a control signal to a final control element for fuel, air or exhaust control.
摘要翻译： 基于由感应式曲轴换能器测量的发动机粗糙度来控制内燃机在其稀薄运行极限区域中的操作。 其周期性信号以与r.p.m成正比的频率从预设的数字以数字递减计数器计数。 根据其自身最高有效位的值，递减计数器的内容在随后的上拉计数器中向上或向下计数，这表示换能器频率和r.p.m比例频率之间的相位比较的代数符号。 由于恒定的发动机加速，两个数字积分级消除了影响。 解码器将控制信号提供给用于燃料，空气或排气控制的最终控制元件。
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