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    • 8. 发明授权
    • Method for controlling the strength of the air/fuel mixture supplied to an internal-combustion engine
    • 用于控制供给内燃机的空气/燃料混合物的强度的方法
    • US06226982B1
    • 2001-05-08
    • US09378760
    • 1999-08-23
    • Luca PoggioMarco SeccoDaniele Ceccarini
    • Luca PoggioMarco SeccoDaniele Ceccarini
    • F01N300
    • F02D41/126F02D41/0295F02D41/1475F02D2200/0802F02D2200/0814F02D2200/0816
    • 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.
    • 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。
    • 9. 发明授权
    • Control method for an oxygen linear sensor
    • 氧线性传感器的控制方法
    • US06223735B1
    • 2001-05-01
    • US09354440
    • 1999-07-16
    • Luca PoggioMarco SeccoDaniele Ceccarini
    • Luca PoggioMarco SeccoDaniele Ceccarini
    • F02D4100
    • G01N27/4175
    • 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.
    • 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。
    • 10. 发明授权
    • Method of controlling and diagnosing the heater of an engine exhaust gas composition sensor
    • 控制和诊断发动机废气组成传感器的加热器的方法
    • US06294075B1
    • 2001-09-25
    • US09499430
    • 2000-02-07
    • Luca PoggioMarco SeccoDaniele Ceccarini
    • Luca PoggioMarco SeccoDaniele Ceccarini
    • G01N27407
    • F02D41/1495F02D41/1456F02D41/1494F02D41/1496
    • 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.
    • 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。