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    Control device for a linear oxygen sensor
    1.
    发明授权
    Control device for a linear oxygen sensor 有权
    线性氧传感器的控制装置

    公开(公告)号：US06334352B1

    公开(公告)日：2002-01-01

    申请号：US09438476

    申请日：1999-11-12

    申请人： Luca Poggio ,  Marco Secco ,  Piero Carbonaro ,  Daniele Ceccarini

    发明人： Luca Poggio ,  Marco Secco ,  Piero Carbonaro ,  Daniele Ceccarini

    IPC分类号： F01N300

    CPC分类号： G01N27/4065 ,  F02D41/1456

    摘要： Control device for a linear oxygen sensor located in an exhaust pipe of an internal combustion engine in contact with exhaust gases in use, the control device including a linear oxygen sensor composed of at least one reference chamber for receiving a specified percentage of oxygen and being one of at least two types which differ in the way in which the at least one reference chamber receives oxygen; controller for exerting a control action on the linear oxygen sensor to generate an output signal (DIP) at an output representing a ratio of the exhaust gases and being composed of a programmable control device; and an operating unit for operating and programming the programmable control device to match the controller to the type of linear oxygen sensor to which it is connected.

    摘要翻译： 用于与使用中的废气接触的内燃机排气管中的线性氧传感器的控制装置，所述控制装置包括线性氧传感器，所述线性氧传感器由至少一个用于接收指定百分比的氧的参考室组成，并且是一个 至少两种类型，其中所述至少一个参考室接收氧的方式不同; 控制器，用于对所述线性氧传感器施加控制动作，以在表示排气比并由可编程控制装置组成的输出端产生输出信号（DIP）; 以及用于操作和编程可编程控制装置以将控制器与其所连接的线性氧传感器的类型相匹配的操作单元。

    Circuit and a method for monitoring and diagnosing an oxygen probe
    2.
    发明授权
    Circuit and a method for monitoring and diagnosing an oxygen probe 有权
    电路和监测和诊断氧探头的方法

    公开(公告)号：US06476611B2

    公开(公告)日：2002-11-05

    申请号：US09804057

    申请日：2001-03-13

    申请人： Marco Berti ,  Piero Carbonaro ,  Daniele Ceccarini ,  Luca Poggio

    发明人： Marco Berti ,  Piero Carbonaro ,  Daniele Ceccarini ,  Luca Poggio

    IPC分类号： F02P1700

    CPC分类号： G01N27/4175

    摘要： A circuit for monitoring and diagnosing an oxygen probe provided with a sensitive cell connected between a first and a second signal terminal, and a heating member connected between a battery and a heating terminal; the circuit includes an interface stage and a control unit. The interface stage includes a first resistor connected between a switch which is normally open and a supply line at a known potential and the first signal terminal, a second resistor connected between the first signal terminal and a second signal terminal and a third resistor connected between the second signal terminal and reference potential line. The control unit further includes a first analog-digital converter connected to the first signal terminal and a second analog-digital converter connected to the second signal terminal.

    摘要翻译： 一种用于监测和诊断设置有连接在第一和第二信号端子之间的敏感单元的氧探头和连接在电池和加热端子之间的加热构件的电路; 电路包括接口级和控制单元。 接口级包括连接在常开的开关和已知电位的电源线之间的第一电阻器和第一信号端子，连接在第一信号端子和第二信号端子之间的第二电阻器和连接在第一信号端子之间的第三电阻器 第二信号端子和参考电位线。 控制单元还包括连接到第一信号端的第一模数转换器和连接到第二信号端的第二模数转换器。

    Method for controlling the strength of the air/fuel mixture supplied to an internal-combustion engine
    3.
    发明授权
    Method for controlling the strength of the air/fuel mixture supplied to an internal-combustion engine 有权
    用于控制供给内燃机的空气/燃料混合物的强度的方法

    公开(公告)号：US06226982B1

    公开(公告)日：2001-05-08

    申请号：US09378760

    申请日：1999-08-23

    申请人： Luca Poggio ,  Marco Secco ,  Daniele Ceccarini

    发明人： Luca Poggio ,  Marco Secco ,  Daniele Ceccarini

    IPC分类号： F01N300

    CPC分类号： F02D41/126 ,  F02D41/0295 ,  F02D41/1475 ,  F02D2200/0802 ,  F02D2200/0814 ,  F02D2200/0816

    摘要： Method for controlling the strength of the air/fuel mixture supplied to an internal-combustion engine after the engine has been in a fuel cut-off operating condition during which a catalytic converter arranged along the exhaust pipe of the engine is acted on by a flow of air and stores oxygen; the method comprising the steps of measuring the strength of the mixture supplied to the engine by means of an oxygen sensor arranged along the exhaust pipe upstream of the catalytic converter; estimating the quantity of oxygen stored by the catalytic converter during the fuel cut-off condition on the basis of the measured strength; and, at the end of the fuel cut-off condition, correcting the strength of the mixture with respect to a target value in relation to the quantity of estimated oxygen, so as to ensure controlled enrichment of the mixture which allows rapid disposal of the oxygen stored by the catalytic converter; the correction of the strength allowing minimization of the time interval during which the catalytic converter operates at low efficiency at the end of the fuel cut-off condition.

    摘要翻译： 用于控制在发动机处于燃料切断操作状态之后供应给内燃机的空气/燃料混合物的强度的方法，其中沿发动机的排气管布置的催化转化器通过流动 的空气和储存氧气; 该方法包括以下步骤：通过沿催化转化器上游的排气管布置的氧传感器来测量供给发动机的混合物的强度; 基于所测量的强度来估计在燃料切断条件期间由催化转化器储存的氧的量; 并且在燃料截止条件结束时，相对于估计氧气的量来校正混合物相对于目标值的强度，以便确保允许快速处理氧气的混合物的受控富集 由催化转化器储存; 在燃料切断状态结束时允许最小化催化转化器以低效率工作的时间间隔的强度的校正。

    Control method for an oxygen linear sensor
    4.
    发明授权
    Control method for an oxygen linear sensor 失效
    氧线性传感器的控制方法

    公开(公告)号：US06223735B1

    公开(公告)日：2001-05-01

    申请号：US09354440

    申请日：1999-07-16

    申请人： Luca Poggio ,  Marco Secco ,  Daniele Ceccarini

    发明人： Luca Poggio ,  Marco Secco ,  Daniele Ceccarini

    IPC分类号： F02D4100

    CPC分类号： G01N27/4175

    摘要： Control method for an oxygen linear sensor, in which the sensor is located along an exhaust duct of an internal combustion engine to receive into a separate chamber part of the exhaust gas and generate a first signal representative of the swing between the composition of the gases in the chamber and a reference stoichiometric composition; the first signal being processed by a retroactive circuit which pilots an electrical current Ip into the sensor in such a manner as to generate an oxygen ion draining mechanism from and towards the chamber and to cancel the swing; the current being converted into an output signal which saving an error due to current spreads, is proportional to the quantity of oxygen present in the exhaust gases; the method presenting the calculation phase of a correction parameter which is applied to the output signal to make it effectively proportional to the quantity of oxygen present in the exhaust gases; the calculation of the parameter being effected with the sensor located in a controlled atmosphere by means of processing of the output signal and of a nominal voltage defining the theoretical value of the output signal in the presence of the said controlled atmosphere.

    摘要翻译： 用于氧线性传感器的控制方法，其中传感器沿着内燃机的排气管道定位以接收到分离的废气中的一部分，并产生代表气体组成之间的摆动的第一信号 该室和参考化学计量组成; 所述第一信号由追溯电路处理，所述追溯电路以电流Ip导向所述传感器，以便从所述室产生氧离子排出机构并且朝向所述室并且消除所述摆动; 转换为输出信号的电流与排气中存在的氧气量成正比; 该方法呈现校正参数的计算阶段，该校正参数应用于输出信号以使其与废气中存在的氧气量成正比; 通过在所述受控气氛的存在下通过输出信号的处理和限定输出信号的理论值的标称电压，利用位于受控气氛中的传感器进行参数的计算。

    Method of controlling and diagnosing the heater of an engine exhaust gas composition sensor
    5.
    发明授权
    Method of controlling and diagnosing the heater of an engine exhaust gas composition sensor 有权
    控制和诊断发动机废气组成传感器的加热器的方法

    公开(公告)号：US06294075B1

    公开(公告)日：2001-09-25

    申请号：US09499430

    申请日：2000-02-07

    申请人： Luca Poggio ,  Marco Secco ,  Daniele Ceccarini

    发明人： Luca Poggio ,  Marco Secco ,  Daniele Ceccarini

    IPC分类号： G01N27407

    CPC分类号： F02D41/1495 ,  F02D41/1456 ,  F02D41/1494 ,  F02D41/1496

    摘要： A method of controlling and diagnosing the heater of a sensor sensitive to the composition of the exhaust gas of an engine; the sensor having at least an electrolytic cell sensitive to oxygen ions, and supplying information relative to the ratio of the mixture supplied to the engine; the method including the steps of: calculating an internal resistance value of the cell on the basis of detected values of the voltage at the terminals of the cell before and after supplying a reference current to the cell; correcting the calculated internal resistance value as a function of the detected ratio of the mixture supplied to the engine; converting the corrected internal resistance value into a current temperature value of the sensor; feedback controlling the temperature of the sensor by regulating the current supplied to the heater by processing the deviation between the current temperature value and an objective temperature; and diagnosing the efficiency of the heater as of the corrected internal resistance value of the cell.

    摘要翻译： 一种控制和诊断对发动机废气的组成敏感的传感器的加热器的方法; 所述传感器至少具有对氧离子敏感的电解池，并且提供与提供给发动机的混合物的比率的信息; 该方法包括以下步骤：基于在向单元提供参考电流之前和之后的单元的端子处的电压的检测值来计算单元的内部电阻值; 根据检测到的供给发动机的混合物的比例来校正所计算的内部电阻值; 将校正的内部电阻值转换为传感器的当前温度值; 通过处理当前温度值和目标温度之间的偏差来调节供给加热器的电流来控制传感器的温度; 并且根据电池的校正的内部电阻值来诊断加热器的效率。

    Oxygen linear sensor test arrangement
    6.
    发明授权
    Oxygen linear sensor test arrangement 有权
    氧气线性传感器测试装置

    公开(公告)号：US06231735B1

    公开(公告)日：2001-05-15

    申请号：US09354170

    申请日：1999-07-16

    申请人： Luca Poggio ,  Marco Secco ,  Chiaffredo Rinaudo ,  Daniele Ceccarini

    发明人： Luca Poggio ,  Marco Secco ,  Chiaffredo Rinaudo ,  Daniele Ceccarini

    IPC分类号： G01N27417

    CPC分类号： G01N27/4175

    摘要： The control arrangement comprises an oxygen linear test sensor located along the exhaust duct of an internal combustion engine, the sensor having a chamber able to receive part of the exhaust gas and two electrolytic cells of which one is electrically piloted; the arrangement having a retro-operation test circuit able to adjust the current piloted to the cell to give rise to an oxygen ions draining mechanism from and/or towards the chamber which induces the stoichiometric condition within the chamber itself, and an outlet circuit able to convert the piloted current into a first signal representative of nature of the mixture fed to the engine; the arrangement being provided with a memory circuit which memorises the value of a compensation resistance of the eventual spreads of the piloted current of a correcting circuit receiving the stored value of the compensation resistance and able to ensure a correction for the first signal to recover the spreads of piloted current to the cell; the correcting circuit providing an outlet signal effectively representative of the nature and independent of the variations in compensation resistance.

    摘要翻译： 控制装置包括沿着内燃机的排气管道定位的氧线性测试传感器，该传感器具有能容纳一部分废气的腔室和一个被电导向的两个电解池; 该装置具有能够调节引导到电池的电流的逆行测试电路，以引起来自腔室和/或朝向腔室的氧离子排出机构，其引起腔室本身内的化学计量条件;以及出口电路， 将引导的电流转换成代表馈送到发动机的混合物的性质的第一信号; 该装置设置有存储电路，其存储接收补偿电阻的存储值的校正电路的导频电流的最终扩展的补偿电阻的值，并且能够确保第一信号的校正以恢复扩展 引导电流到电池; 校正电路提供出口信号，其有效地代表性质并且独立于补偿电阻的变化。