公开(公告)号：US20110192144A1

公开(公告)日：2011-08-11

申请号：US13005398

申请日：2011-01-12

Applicant: Yuji YASUI

Inventor： Yuji YASUI

IPC: F01N3/18 ,  F01N11/00

CPC classification number: F02D41/0295 ,  F01N3/208 ,  F01N13/008 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2560/021 ,  F01N2560/025 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/06 ,  F01N2900/1402 ,  F01N2900/1622 ,  F02D41/0275 ,  F02D41/1441 ,  F02D41/1475 ,  F02D2041/1468 ,  Y02A50/2344 ,  Y02T10/24

Abstract: An exhaust gas purifying apparatus for an internal combustion engine is provided. The apparatus includes a first catalyst and a second catalyst. The first catalyst is provided in an exhaust passage of the engine, and can remove NOx in exhaust gases from the engine when an air-fuel ratio of an air-fuel mixture burning in the engine is in the vicinity of the stoichiometric ratio. The second catalyst is provided downstream of the first catalyst, an can remove NOx in the exhaust gases using a reducing agent. An execution condition of a lean operation in which the air-fuel ratio is set to a lean air-fuel ratio which is leaner than the stoichiometric ratio, is determined. When switching the air-fuel ratio from an air-fuel ratio in the vicinity of the stoichiometric ratio to the lean air-fuel ratio, the air-fuel ratio is controlled to a rich air-fuel ratio which is richer than the stoichiometric ratio, during a lean transition period from the time the execution condition is satisfied. The air-fuel ratio is controlled to the lean air-fuel ratio after the lean transition period has elapsed.

Abstract translation: 提供一种用于内燃机的废气净化装置。 该装置包括第一催化剂和第二催化剂。 第一催化剂设置在发动机的排气通道中，并且当在发动机中燃烧的空气燃料混合物的空燃比在化学计量比附近时，能够从发动机排出废气中的NOx。 第二催化剂设置在第一催化剂的下游，可以使用还原剂除去废气中的NOx。 确定将空燃比设定为比化学计量比稀的稀空燃比的稀薄运转的执行条件。 当将空燃比从化学计量比附近的空燃比转换为稀空燃比时，将空燃比控制为比化学计量比更浓的浓空燃比， 在执行条件满足时的精简过渡期间。 经过稀薄过渡期之后，将空燃比控制在稀空燃比。

公开(公告)号：US07949458B2

公开(公告)日：2011-05-24

申请号：US12318741

申请日：2009-01-07

Applicant: Yuji Yasui ,  Ikue Kawasumi

Inventor： Yuji Yasui ,  Ikue Kawasumi

IPC: F02D45/00 ,  F01N3/10

CPC classification number: F02D41/1402 ,  F02D41/0255 ,  F02D41/107 ,  F02D41/1403 ,  F02D41/1444 ,  F02D41/1454 ,  F02D2041/141 ,  F02D2041/142 ,  F02D2041/1422

Abstract: A control apparatus capable of ensuring high control accuracy even if a controlled object is in a transient state, when a control input is calculated based on a value obtained by correcting a value calculated by a feedforward control method using a value calculated by a feedback control method. The control apparatus calculates a fuel correction coefficient such that an output from an oxygen concentration sensor converges to a target output, and multiplies a basic injection amount by the coefficient to calculate a fuel injection amount. The basic injection amount is selected from three values according to the cause of a mapping error. Two of them are calculated by searching respective maps according to corrected throttle valve opening values and engine speed. The other is calculated by multiplying a value obtained by searching a map according to the opening and the speed by a correction coefficient.

Abstract translation: 一种控制装置，即使控制对象处于过渡状态，也能够基于通过使用由反馈控制方法计算的值校正由前馈控制方法计算的值而求出的值来计算控制输入， 。 控制装置计算燃料校正系数，使得氧浓度传感器的输出收敛到目标输出，并将基本喷射量乘以系数以计算燃料喷射量。 根据映射错误的原因，从三个值中选择基本喷射量。 其中两个通过根据修正的节气门开度值和发动机转速搜索各个地图来计算。 另一个是通过将根据开口和速度搜索映射获得的值乘以校正系数来计算的。

公开(公告)号：US20100256894A1

公开(公告)日：2010-10-07

申请号：US12572227

申请日：2009-10-01

Applicant: Yuji YASUI

Inventor： Yuji YASUI

IPC: F02D41/00 ,  F01N11/00

CPC classification number: F02D41/0235 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/0052 ,  F02D41/1401 ,  F02D41/1403 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/405 ,  F02D2041/0265 ,  F02D2041/141 ,  F02D2041/1418

Abstract: A control system for an internal combustion engine, which is capable of properly controlling both the temperature of an exhaust system and the air-fuel ratio of exhaust gases even when the control range of the air-fuel ratio of a combustion air-fuel mixture is limited, thereby improving the reduction of exhaust emissions. In the control system, a demanded torque-calculating section calculates a demanded torque. A first controller calculates a target equivalent ratio such that a DeNOx catalyst temperature converges to a predetermined target temperature. A second controller calculates three feedback correction values such that an output value from an oxygen concentration sensor converges to a target output value. A third controller calculates a torque fuel injection amount for generating the combustion air-fuel mixture, a post fuel injection amount for supplying unburned fuel to a DeNOx catalyst, etc. based on five values.

Abstract translation: 一种用于内燃机的控制系统，其能够适当地控制排气系统的温度和排气的空燃比，即使当燃烧空气 - 燃料混合物的空燃比的控制范围为 有限，从而改善废气排放的减少。 在控制系统中，要求的转矩计算部分计算要求转矩。 第一控制器计算目标当量比，使得DeNOx催化剂温度收敛到预定的目标温度。 第二控制器计算三个反馈校正值，使得来自氧浓度传感器的输出值收敛到目标输出值。 第三控制器基于五个值计算用于产生燃烧空气 - 燃料混合物的转矩燃料喷射量，用于向DeNOx催化剂供应未燃烧燃料的后燃料喷射量等。

公开(公告)号：US07725237B2

公开(公告)日：2010-05-25

申请号：US11635589

申请日：2006-12-08

Applicant: Yuji Yasui ,  Ikue Kawasumi

Inventor： Yuji Yasui ,  Ikue Kawasumi

IPC: F02D43/00 ,  G06G7/70

CPC classification number: F02D41/1402 ,  F02D35/023 ,  F02D41/0002 ,  F02D41/3035 ,  F02D2041/001 ,  F02D2041/1432 ,  F02D2041/1433 ,  F02D2250/18

Abstract: A control apparatus which is capable of ensuring both high-level stability and accuracy of control and reducing manufacturing costs thereof and computation load thereon, even when controlling a controlled object having extremal characteristics or a controlled object of a multi-input multi-output system. The control apparatus is comprised of an onboard model analyzer and a cooperative controller. The onboard model analyzer, based on a controlled object model defining the relationships between an intake opening angle and an exhaust reopening angle, and an indicated mean effective pressure, calculates first and second response indices and indicative of a correlation therebetween, respectively. The cooperative controller calculates the intake opening angle and the exhaust reopening angle with predetermined algorithms such that the indicated mean effective pressure is caused to converge to its target value, and determines the increasing/decreasing rate and the increasing/decreasing direction of the aforementioned angles according to the first and second response indices.

Abstract translation: 即使在控制具有极端特性的被控制对象或多输入多输出系统的受控对象的情况下，也能够确保高水平的稳定性和控制精度以及降低其制造成本和计算负荷的控制装置。 该控制装置包括车载模型分析器和协作控制器。 车载模型分析仪基于限定进气开启角度和排气重新打开角度之间的关系的受控对象模型和指示的平均有效压力，分别计算第一和第二响应指数并指示它们之间的相关性。 合作控制器使用预定的算法计算进气开度角和排气重开度，使得所指示的平均有效压力收敛到其目标值，并根据上述角度确定上升/下降速率和上升/下降方向 到第一和第二个响应指数。

公开(公告)号：US07643930B2

公开(公告)日：2010-01-05

申请号：US11984744

申请日：2007-11-21

Applicant: Yuji Yasui ,  Mitsunobu Saito ,  Tadaharu Shoji ,  Akiyuki Yonekawa

Inventor： Yuji Yasui ,  Mitsunobu Saito ,  Tadaharu Shoji ,  Akiyuki Yonekawa

IPC: B60T7/12 ,  F01L1/34

CPC classification number: F01L13/0021 ,  F02D41/0002 ,  F02D41/1401 ,  F02D41/1403 ,  F02D41/2416 ,  F02D41/2422 ,  F02D2041/001 ,  F02D2041/1416 ,  F02D2041/1423 ,  G05B5/01 ,  Y02T10/42

Abstract: A control system which is capable of compensating for and suppressing the influence of a periodic disturbance on a controlled object more quickly, even when the controlled object is subjected to the periodic disturbance the amplitude of which periodically changes, thereby enhancing the stability and the accuracy of control. The control system includes an ECU. The ECU calculates disturbance compensation values for compensating for a periodic disturbance by searching maps and tables, in timing of generation of each pulse of a CRK signal. The ECU calculates control inputs at a predetermined control period, with predetermined control algorithms, according to the disturbance compensation values read in at the control period, respectively.

Abstract translation: 即使控制对象受到振幅周期性变化的周期性干扰，能够更快地补偿和抑制周期性干扰对受控对象的影响的控制系统，从而提高稳定性和准确性 控制。 控制系统包括ECU。 在产生CRK信号的每个脉冲的定时中，ECU通过搜索地图和表来计算用于补偿周期性干扰的干扰补偿值。 ECU根据在控制周期读入的干扰补偿值，利用预定的控制算法在预定的控制周期内计算控制输入。

公开(公告)号：US07520255B2

公开(公告)日：2009-04-21

申请号：US11150486

申请日：2005-06-13

Applicant: Kanako Shimojo ,  Yuji Yasui

Inventor： Kanako Shimojo ,  Yuji Yasui

IPC: F01L1/34

CPC classification number: F01L13/0015 ,  F02D13/0207 ,  F02D13/0226 ,  F02D13/0238 ,  Y02T10/18

Abstract: A control for avoiding interference between a valve and a piston of an engine is provided. The engine has a variable lift mechanism that is capable of changing a lift amount of the valve and a variable phase mechanism that is capable of changing a phase of the valve. A predicted value of the phase is calculated. A first determination of whether or not the predicted value has exceeded a first predetermined value is made. If it is determined that the predicted value has exceeded the first predetermined value, at least one of the lift amount and the phase is changed to avoid the interference between the valve and the piston. By using the predicted value, the interference can be avoided without delay.

Abstract translation: 提供了用于避免发动机的阀和活塞之间的干扰的控制。 发动机具有能够改变阀的提升量的可变提升机构和能够改变阀的相位的可变相位机构。 计算相位的预测值。 进行预测值是否超过第一预定值的第一确定。 如果确定预测值已经超过第一预定值，则提升量和相位中的至少一个被改变以避免阀和活塞之间的干扰。 通过使用预测值，可以避免延迟。

公开(公告)号：US07487031B2

公开(公告)日：2009-02-03

申请号：US11907384

申请日：2007-10-11

Applicant: Yuji Yasui ,  Ikue Kawasumi ,  Kosuke Higashitani

Inventor： Yuji Yasui ,  Ikue Kawasumi ,  Kosuke Higashitani

IPC: B60T7/12 ,  F02D13/04

CPC classification number: F02D41/0002 ,  B60K28/16 ,  F02D13/0226 ,  F02D13/0261 ,  F02D41/1401 ,  F02D41/1497 ,  F02D41/40 ,  F02D2041/001 ,  F02D2041/141 ,  F02D2041/1422 ,  F02D2041/1433 ,  F02D2250/18 ,  Y02T10/42 ,  Y02T10/44

Abstract: A control apparatus which is capable of compensating for a control error properly and quickly even under a condition where the control error is temporarily increased e.g. by degradation of reliability of the detection results of reference parameters other than controlled variables, thereby making it possible to ensure a high accuracy of control. An air-fuel ratio controller of the control apparatus calculates an air-fuel ratio error estimated value and an error weight, calculates an modified error, calculates a basic lift correction value such that the modified error becomes equal to 0, calculates a lift correction value, calculates corrected valve lift by adding the lift correction value to valve lift, calculates a first estimated intake air amount for feedforward control of an air-fuel ratio according to the corrected valve lift, calculates an air-fuel ratio correction coefficient for feedback control of the air-fuel ratio, and calculates a fuel injection amount according to these.

Abstract translation: 即使在暂时增加控制误差的情况下也能适当，快速地补偿控制误差的控制装置， 通过降低控制变量以外的参考参数的检测结果的可靠性，从而可以确保高精度的控制。 控制装置的空燃比控制器计算空燃比误差估计值和误差重量，计算修正误差，计算修正误差等于0的基本升程修正值，计算升程修正值 通过将升程校正值加到气门升程来计算校正的气门升程，根据校正的气门升程计算用于空燃比的前馈控制的第一估计进气量，计算用于反馈控制的空燃比校正系数 空燃比，并根据这些计算燃料喷射量。

公开(公告)号：US20080319638A1

公开(公告)日：2008-12-25

申请号：US11984744

申请日：2007-11-21

Applicant: Yuji Yasui ,  Mitsunobu Saito ,  Tadaharu Shoji ,  Akiyuki Yonekawa

Inventor： Yuji Yasui ,  Mitsunobu Saito ,  Tadaharu Shoji ,  Akiyuki Yonekawa

IPC: F02D13/02 ,  F02D15/00 ,  F02D41/26 ,  F01L1/344

CPC classification number: F01L13/0021 ,  F02D41/0002 ,  F02D41/1401 ,  F02D41/1403 ,  F02D41/2416 ,  F02D41/2422 ,  F02D2041/001 ,  F02D2041/1416 ,  F02D2041/1423 ,  G05B5/01 ,  Y02T10/42

Abstract: A control system which is capable of compensating for and suppressing the influence of a periodic disturbance on a controlled object more quickly, even when the controlled object is subjected to the periodic disturbance the amplitude of which periodically changes, thereby enhancing the stability and the accuracy of control. The control system includes an ECU. The ECU calculates disturbance compensation values for compensating for a periodic disturbance by searching maps and tables, in timing of generation of each pulse of a CRK signal. The ECU calculates control inputs at a predetermined control period, with predetermined control algorithms, according to the disturbance compensation values read in at the control period, respectively.

Abstract translation: 即使控制对象受到振幅周期性变化的周期性干扰，能够更快地补偿和抑制周期性干扰对受控对象的影响的控制系统，从而提高稳定性和准确性 控制。 控制系统包括ECU。 在产生CRK信号的每个脉冲的定时中，ECU通过搜索地图和表来计算用于补偿周期性干扰的干扰补偿值。 ECU根据在控制周期读入的干扰补偿值，利用预定的控制算法在预定的控制周期内计算控制输入。

公开(公告)号：US07438046B2

公开(公告)日：2008-10-21

申请号：US11642944

申请日：2006-12-21

Applicant: Katsura Okubo ,  Yuji Yasui ,  Masahiro Sato ,  Koichiro Shinozaki

Inventor： Katsura Okubo ,  Yuji Yasui ,  Masahiro Sato ,  Koichiro Shinozaki

IPC: F02D13/04 ,  F01L1/00

CPC classification number: F02D13/0207 ,  F01L1/20 ,  F01L1/34 ,  F01L13/0063 ,  F01L2800/14 ,  F01L2820/043 ,  F02D35/023 ,  F02D2200/025 ,  Y02T10/18

Abstract: A failure detection apparatus for preventing erroneous detection due to a degradation of a sensor and thereby accurately performing failure detection of a variable valve timing and lift control system is provided. The detection apparatus detects a failure of a variable valve timing and lift control system in an engine. The detection apparatus detects a vibration inside an engine cylinder, extracts the component of seating sound of the valve from the output signal of the sensor, determines an actual seating time of said valve from the component of seating sound, and calculates a target seating time of said valve based on at least one of a requested lift amount, a requested advance angle, and a requested open angle depending on the operating conditions. The detecting apparatus corrects the actual seating time for a stationary deviation between the actual seating time and the target seating time caused by degradation or unevenness of the sensor. The detecting apparatus determines a failure of the variable valve timing and lift control system by comparing the corrected actual seating time with the target seating time.

Abstract translation: 提供一种故障检测装置，用于防止由于传感器的劣化导致的错误检测，从而准确地执行可变气门正时和升程控制系统的故障检测。 检测装置检测发动机中的可变气门正时和升程控制系统的故障。 检测装置检测发动机气缸内的振动，从传感器的输出信号中提取阀的座位声音的分量，根据座位声音的分量确定所述阀的实际就座时间，并计算目标就座时间 基于所述操作条件，所述阀基于所请求的提升量，请求的提前角和所请求的开启角中的至少一个。 检测装置校正由于传感器的劣化或不均匀性引起的实际就座时间和目标就座时间之间的固定偏差的实际就座时间。 检测装置通过将校正的实际就座时间与目标就座时间进行比较来确定可变气门正时和升程控制系统的故障。

公开(公告)号：US07430854B2

公开(公告)日：2008-10-07

申请号：US10653146

申请日：2003-09-03

Applicant: Yuji Yasui ,  Akihiro Shinjo ,  Tatsuhito Esaki ,  Naoto Fujimura

Inventor： Yuji Yasui ,  Akihiro Shinjo ,  Tatsuhito Esaki ,  Naoto Fujimura

IPC: F01N3/00

CPC classification number: F02D41/126 ,  F01N13/0097 ,  F02D41/1402 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1475 ,  F02D41/2441 ,  F02D2041/1423 ,  F02D2041/1433 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0414

Abstract: An air fuel ratio controller for an internal combustion engine includes an exhaust gas sensor, an identifier and a control unit. The exhaust gas sensor detects oxygen concentration of exhaust gas. The identifier calculates model parameters for a model of a controlled object based on the output of the exhaust gas sensor. The controlled object includes an exhaust system of the engine. The control unit is configured to use the model parameters to control the air-fuel ratio so that the output of the exhaust gas sensor converges to a desired value, and to stop the identifier from calculating the model parameters during and immediately after the engine operation with a lean air-fuel ratio. The calculation of the model parameters may be also stopped during and immediately after fuel-cut operation that stops fuel supply to the engine. Such a stop of the calculation of the model parameters reduces the emission of undesired substances contained in exhaust gas when the engine shifts from lean operation to stoichiometric/rich operation.

Abstract translation: 用于内燃机的空燃比控制器包括排气传感器，标识符和控制单元。 排气传感器检测废气的氧浓度。 识别器基于排气传感器的输出来计算受控对象的模型的模型参数。 受控对象包括发动机的排气系统。 控制单元被配置为使用模型参数来控制空燃比，使得废气传感器的输出收敛到期望值，并且在发动机运行期间和之后立即停止标识符计算模型参数， 贫空燃比。 模型参数的计算也可以在停止向发动机供油的燃料切断操作期间和之后立即停止。 当发动机从稀薄运转转变为化学计量/浓缩运转时，模拟参数的计算的这种停止减少废气中所含的不期望物质的排放。