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。

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。

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。

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。

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。

公开(公告)号：US06167697A

公开(公告)日：2001-01-02

申请号：US09354843

申请日：1999-07-16

申请人： Luca Poggio ,  Marco Violani ,  Marco Secco ,  Giovanni Gaviani

发明人： Luca Poggio ,  Marco Violani ,  Marco Secco ,  Giovanni Gaviani

IPC分类号： F01N300

CPC分类号： F02D41/1441 ,  F02D41/1456 ,  F02D41/1475 ,  F02D41/1479

摘要： A device for controlling the air/fuel ratio of the mixture supplied to an endothermal engine, in which a first and a second oxygen sensor disposed along an exhaust duct of the engine upstream and, respectively, downstream of a catalytic converter generate a first and respectively a second signal representative of the stoichiometric compositions of the combusted gases, the device having a first control circuit receiving as input the first signal and generating a correction parameter adapted to be applied to a quantity of fuel calculated in an open loop in order to obtain a corrected quantity of fuel for an injection unit of the engine, the device having a second control circuit which receives the second signal, supplies a correction signal to the first circuit in order to modify the correction parameter and has a control branch adapted to sample the second signal at a predetermined time frequency and to vary the correction signal when the difference between two successively sampled values is greater than a predetermined threshold so as to modify the air/fuel ratio and to minimise the time in which the catalytic converter operates at low efficiency.

摘要翻译： 一种用于控制提供给吸热发动机的混合物的空气/燃料比的装置，其中沿着发动机的排气管上游并分别在催化转化器的下游设置的第一和第二氧传感器分别产生第一和第二氧传感器 表示燃烧气体的化学计量组成的第二信号，所述装置具有第一控制电路作为输入接收第一信号，并产生适于施加到在开环中计算的燃料量的校正参数，以便获得 用于发动机的喷射单元的校正量的燃料，具有接收第二信号的第二控制电路的装置向第一电路提供校正信号，以便修改校正参数，并且具有适于对第二信号进行采样的控制分支 以预定的时间频率进行信号，并且当两个相继采样的差值之间改变校正信号 es大于预定阈值，以便改变空燃比并使催化转化器以低效率工作的时间最小化。

公开(公告)号：US06360733B1

公开(公告)日：2002-03-26

申请号：US09503521

申请日：2000-02-14

申请人： Marco Uberti Bona Blotto ,  Luca Poggio ,  Marco Secco ,  Giorgio Bombarda

发明人： Marco Uberti Bona Blotto ,  Luca Poggio ,  Marco Secco ,  Giorgio Bombarda

IPC分类号： F02D4114

CPC分类号： F02D41/008 ,  F02D41/06 ,  F02D41/2454 ,  F02D2041/1411

摘要： A self-adapting method of controlling the mixture ratio of an injection system, of an internal combustion engine. In each operating state of the engine and for each injector, the method determines a nominal quantity of fuel to be injected as a function of a number of engine parameters and operating conditions, an operating parameter as a function of a signal representing exhaust gas composition and of a proportional-integral regulating function and hot and cold correction coefficients indicating a correction to be made to the nominal quantity of fuel to take into account the effect on injection of different engines and different injection systems during hot and cold engine operation.

摘要翻译： 一种控制内燃机喷射系统的混合比的自适应方法。 在发动机和每个喷射器的每个操作状态下，该方法根据发动机参数和操作条件的数量确定要喷射的燃料的标称量，作为表示排气组成的信号的函数的操作参数，以及 比例积分调节功能和冷热校正系数，表示将对燃油的额定量进行校正，以考虑在热和冷发动机运行期间对不同发动机和不同喷射系统的喷射的影响。

公开(公告)号：US06334305B1

公开(公告)日：2002-01-01

申请号：US09558171

申请日：2000-04-26

申请人： Luca Poggio ,  Marco Secco

发明人： Luca Poggio ,  Marco Secco

IPC分类号： F01N300

CPC分类号： F02D41/1495 ,  F02D41/1402 ,  F02D41/1441 ,  F02D41/2454 ,  F02D2041/1432

摘要： A self-adapting method for controlling titre for an internal combustion engine provided with a first and a second sensor of stoichiometric composition disposed respectively upstream and downstream of a system for reducing pollutant emissions and generating respective upstream and downstream composition signals. The method comprises the stages of determining a correction coefficient as a function of the upstream composition signal, the downstream composition signal and an objective signal indicative of an objective exhaust titre, determining an operating quantity of fuel to be injected into each cylinder of the engine as a function of the correction coefficient, memorising a plurality of current values of an adaptation signal each associated with a respective combination of values of the number of revolutions and the load of the engine, updating the current values as a function of the downstream composition signal, on each engine cycle, selecting one current value corresponding to the number of revolutions and the load of the engine in this engine cycle, generating the adaptation signal as a function of the current value selected and determining the correction coefficient also as a function of the adaptation signal.

摘要翻译： 一种用于控制内燃机的滴定度的自适应方法，该内燃机设置有分别设置在系统的上游和下游的用于减少污染物排放并产生各自的上游和下游组成信号的化学计量组成的第一和第二传感器。 该方法包括以下步骤：确定作为上游合成信号，下游合成信号和表示目标排气滴定度的目标信号的函数的校正系数，确定要喷射到发动机的每个气缸中的燃料的操作量 校正系数的函数，存储适应信号的多个当前值，每个自适应信号与转数的数值和发动机的负载的相应组合相关联，更新作为下游合成信号的函数的当前值， 在每个发动机循环中，选择对应于该发动机循环中的转数和发动机的负荷的一个当前值，根据所选择的当前值生成适应信号，并根据适应性确定校正系数 信号。

公开(公告)号：US06236931B1

公开(公告)日：2001-05-22

申请号：US09448462

申请日：1999-11-24

申请人： Luca Poggio ,  Marco Secco ,  Andrea Gelmetti

发明人： Luca Poggio ,  Marco Secco ,  Andrea Gelmetti

IPC分类号： F02M700

CPC分类号： F02D41/402 ,  F02D41/1401 ,  F02D41/3818 ,  F02D41/40 ,  F02D2041/1409 ,  F02D2041/1431 ,  F02D2041/1433 ,  Y02T10/44

摘要： Method of controlling the direct injection of fuel into a combustion chamber of an internal combustion engine, according to which, in order to effect injection in relation to a first stroke of the cylinder starting from a dead center, the following steps are performed: estimating during a stroke of the cylinder preceding the first stroke the pressure which will be present in the suction manifold at the first dead center, estimating an injection advance for the injection on the basis of the estimation of the pressure in the suction manifold, detecting the pressure in the fuel manifold, estimating the mean pressure which will be present in the chamber during the injection on the basis of the estimates effected in the preceding steps and on the basis of a function representative of the course of the pressure in the combustion chamber under reference operating conditions of the engine, estimating the mean flow rate of the injector during the injection on the basis of the pressure difference defined by the pressure detected in the fuel manifold and the mean pressure estimated in the chamber, and calculating and programming a delivery interval for the injector on the basis of the mean flow rate estimated and of the quantity of fuel to be injected.

摘要翻译： 控制将燃料直接喷射到内燃机的燃烧室中的方法，根据该方法，为了从死点开始相对于气缸的第一冲程进行喷射，执行以下步骤：在 在第一冲程之前的气缸的行程将在第一死点处的吸入歧管中存在的压力，基于抽吸歧管中的压力的​​估计来估计喷射的喷射提前，检测压力 燃料歧管，基于前述步骤中估计的估计，并且基于表示在参考操作下的燃烧室中的压力过程的函数来估计在注射期间将存在于腔室中的平均压力 发动机的条件，基于压力差来估计喷射器的喷射平均流量 e由在燃料歧管中检测的压力和在室中估计的平均压力来限定，并且基于估计的平均流量和要喷​​射的燃料量来计算和编程喷射器的输送间隔。

公开(公告)号：US06516608B1

公开(公告)日：2003-02-11

申请号：US09448461

申请日：1999-11-24

申请人： Luca Poggio ,  Marco Secco ,  Andrea Gelmetti

发明人： Luca Poggio ,  Marco Secco ,  Andrea Gelmetti

IPC分类号： F01N300

CPC分类号： F02D41/402 ,  F02D41/024 ,  F02D41/3023 ,  F02D41/405 ,  Y02T10/26 ,  Y02T10/44

摘要： Method for controlling the injection and ignition in a direct-injection endothermic engine, in order to accelerate heating of a catalytic converter , which is disposed along the exhaust pipe of the engine, The method comprising the steps of executing, during a single cycle of the engine, and for each cylinder of the engine itself, at least a first injection of fuel, during suction stroke and/or compression stroke of the cylinder itself, in order to supply a weak mixture; priming combustion in each cylinder, at a priming moment which is pre-determined such that the combustion in each cylinder generates the same torque; and executing, in at least one cylinder of the engine, a second injection of fuel, during the exhaust stroke of the cylinder itself, such that the ratio of air/fuel of the mixture as a whole, which is supplied to the cylinder during suction stroke, compression stroke, expansion stroke and exhaust stroke, is close to the stoichiometric value; the fuel which is injected in the said second injection giving rise to residual combustion in the presence of the oxygen-rich exhaust gases, which are derived from the combustion of the weak mixture; the residual combustion not affecting the torque generated, and producing heat in order to speed up heating of the catalytic converter.

摘要翻译： 用于控制直喷式吸热发动机中的喷射和点火的方法，以便加速沿着发动机排气管设置的催化转化器的加热。该方法包括以下步骤：在单次循环 发动机，并且对于发动机本身的每个气缸，至少在气缸本身的吸入冲程和/或压缩冲程期间首先喷射燃料，以便供应弱混合物; 在预先确定的启动时刻，在每个气缸中启动燃烧，使得每个气缸中的燃烧产生相同的扭矩; 并且在所述发动机的至少一个气缸中执行在所述气缸本身的排气冲程期间的第二次燃料喷射，使得混合物整体的空气/燃料的比例在抽吸期间被供应到所述气缸 行程，压缩冲程，膨胀冲程和排气冲程，接近化学计量值; 在所述第二喷射中注入的燃料在富氧废气的存在下产生，所述富氧废气源自所述弱混合物的燃烧; 剩余燃烧不影响产生的转矩，并产生热量，以加速催化转化器的加热。