公开(公告)号：US20110099985A1

公开(公告)日：2011-05-05

申请号：US12917179

申请日：2010-11-01

申请人： Yuji YASUI ,  Kazuo YANADA

发明人： Yuji YASUI ,  Kazuo YANADA

IPC分类号： F01N3/10

CPC分类号： F01N3/208 ,  F01N2560/021 ,  F01N2900/0411 ,  F01N2900/1402 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24

摘要： An exhaust purification system is provided that can continuously maintain a NOx purification rate to be high while suppressing the occurrence of ammonia slip. The exhaust purification system includes a slip determination portion 34 that determines the occurrence of ammonia slip based on an output value NH3CONS of an ammonia sensor 26. A reference injection amount calculating portion 31 calculates a reference injection amount GUREA—BS based on a parameter correlating to an operating state of an engine. A switching injection amount calculating portion 32 decreases in amount a urea injection amount GUREA by setting a switching injection amount GUREA—SW to a negative value in response to having determined that ammonia slip has occurred, and increases in amount the injection amount GUREA by setting the switching injection amount GUREA—SW to a positive value in response to a storage amount estimated value STUREA having fallen below a predetermined switch storage amount STUREA—SW.

摘要翻译： 提供了能够在抑制氨滑移的发生的同时，将NOx净化率连续地维持为高的排气净化系统。 排气净化系统包括：滑移判定部34，其根据氨传感器26的输出值NH3CONS确定氨的滑移发生。基准喷射量计算部31基于与氨传感器26的输出值NH3CONS相关的参数，计算基准喷射量GUREA-BS 发动机的运行状态。 切换喷射量计算部32响应于已经确定发生氨滑移而将切换喷射量GUREA-SW设定为负值，从而减少尿素喷射量GUREA的量，并且通过将喷射量GUREA设定为 响应于已经低于预定开关存储量STUREA-SW的存储量估计值STUREA，切换喷射量GUREA-SW变为正值。

公开(公告)号：US20120116545A1

公开(公告)日：2012-05-10

申请号：US13289062

申请日：2011-11-04

申请人： Yuji YASUI

发明人： Yuji YASUI

IPC分类号： G05B13/04

CPC分类号： G05B13/042 ,  G05B2219/25298 ,  Y10T477/675 ,  Y10T477/679

摘要： A control apparatus capable of improving the control accuracy and stability when controlling a controlled object with a predetermined restraint condition between a plurality of model parameters, or a controlled object having a lag characteristic, using a control target model of a discrete-time system. The control apparatus has an ECU which arranges a control target model including two model parameters such that terms not multiplied by the model parameters and terms multiplied by the same are on different sides of the model, respectively. Assuming the different sides represent a combined signal value and an estimated combined signal value, respectively, the ECU calculates onboard identified values of the model parameters such that an identification error between the signal values is minimized, and calculates an air-fuel ratio correction coefficient using the identified values and a control algorithm derived from the control target model.

摘要翻译： 使用离散时间系统的控制对象模型，能够在多个模型参数之间的预定约束条件或具有滞后特性的受控对象来控制受控对象时提高控制精度和稳定性的控制装置。 控制装置具有：ECU，其配置包括两个模型参数的控制对象模型，使得不与模型参数相乘的项和与其相乘的项分别位于模型的不同侧。 假设不同侧分别表示组合信号值和估计的组合信号值，则ECU计算模型参数的车内识别值，使得信号值之间的识别误差最小化，并且使用以下方式计算空燃比校正系数： 识别的值和从控制目标模型导出的控制算法。

公开(公告)号：US20090055081A1

公开(公告)日：2009-02-26

申请号：US12251069

申请日：2008-10-14

申请人： Yuji YASUI ,  Mitsunobu SAITO ,  Hiroshi TAGAMI ,  Kosuke HIGASHITANI ,  Massahiro SATO

发明人： Yuji YASUI ,  Mitsunobu SAITO ,  Hiroshi TAGAMI ,  Kosuke HIGASHITANI ,  Massahiro SATO

IPC分类号： F02D41/00

CPC分类号： F02D13/023 ,  F01L13/0063 ,  F01L2800/00 ,  F01L2820/032 ,  F02B75/048 ,  F02D13/0238 ,  F02D15/02 ,  F02D41/182 ,  F02D41/22 ,  F02D2200/0402 ,  F02D2400/08 ,  Y02T10/18

摘要： A control system for an internal combustion engine, which is capable of enhancing the accuracy of fuel control and ignition timing control even when there is a possibility that the reliability of a calculated intake air amount lowers, and enables reduction of manufacturing costs. An ECU of the control system calculates a first estimated intake air amount according to a valve lift, a cam phase, and a compression ratio, calculates a second estimated intake air amount according to the flow rate of air detected by an air flow sensor. The ECU determines a fuel injection amount according to the first estimated intake air amount when an estimated flow rate Gin_vt calculated based on an engine speed, the valve lift, the cam phase, and the compression ratio is within the range of Gin_vt≦Gin1, and according to the second estimated intake air amount when Gin2≦Gin_vt.

摘要翻译： 即使存在计算出的进气量的可靠性降低的情况下，能够提高燃料控制和点火正时控制的精度的内燃机的控制系统，能够降低制造成本。 控制系统的ECU根据气门升程，凸轮相位和压缩比来计算第一估计进气量，根据由空气流量传感器检测的空气流量计算第二估计进气量。 当基于发动机转速，气门升程，凸轮相位和压缩比计算的估计流量Gin_vt在Gin_vt <= Gin1的范围内时，ECU根据第一估计进气量判定燃料喷射量， 并且根据Gin2 <= Gin_vt时的第二估计进气量。

公开(公告)号：US20110131956A1

公开(公告)日：2011-06-09

申请号：US12962039

申请日：2010-12-07

申请人： Yuji YASUI ,  Eiji Hashimoto

发明人： Yuji YASUI ,  Eiji Hashimoto

IPC分类号： F01N11/00

CPC分类号： F01N3/2066 ,  F01N3/206 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/1473 ,  F01N2900/1402 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

摘要： A catalyst degradation determination device is provided that can determine the degradation of a selective reduction catalyst with high precision while also suppressing a temporary decline in purification performance. By way of controlling a urea injection device, the catalyst degradation determination device increases, in a selective reduction catalyst in a state in which the storage amount is a maximum, the storage amount thereof by a detection reduced-amount portion DSTNH3—JD and then decreases the amount until it is determined that ammonia slip has occurred. Then, degradation is determined based on the time at which the slip determination flag FNH3—SLIP was set to “1” when fluctuating the storage amount. The detection reduced-amount portion DSTNH3—JD is set to a value that is larger than the storage capacity of the selective reduction catalyst in a degraded state and smaller than the storage capacity of the selective reduction catalyst in a normal state.

摘要翻译： 提供一种能够高精度地确定选择还原型催化剂的降解的催化剂劣化测定装置，同时抑制净化性能的暂时下降。 通过控制尿素喷射装置，催化剂劣化判定装置在储存量最大的状态下的选择还原催化剂中，通过检测减量部分DSTNH3-JD的储存量增加，然后减少 确定发生氨滑移的量。 然后，当波动存储量时，基于滑移确定标记FNH3-SLIP被设置为“1”的时间来确定劣化。 检测减量部DSTNH3-JD被设定为大于选择还原型催化剂处于劣化状态的储存容量并且小于选择还原催化剂在正常状态下的储存容量的值。

公开(公告)号：US20110192149A1

公开(公告)日：2011-08-11

申请号：US13013505

申请日：2011-01-25

申请人： Yuji YASUI

发明人： Yuji YASUI

IPC分类号： F01N3/18

CPC分类号： F01N3/208 ,  F01N3/106 ,  F01N11/00 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2560/021 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust gas purifying apparatus for an internal combustion engine is provided. A selective reduction catalyst is disposed in an exhaust passage of the engine for reducing NOx in exhaust gases from the engine under existence of a reducing agent. The reducing agent or a reactant for generating the reducing agent is supplied to the upstream side of the selective reduction catalyst. Occurrence of a reducing-agent slip in which the reducing agent is discharged to the downstream side of the selective reduction catalyst is determined. A storage amount indicative of an amount of the reducing agent stored in the selective reduction catalyst is temporarily reduced from the state where the storage amount is at the maximum, and thereafter the storage amount is increased until the occurrence of the reducing-agent slip is detected. A supply correction amount for correcting an amount of the reducing agent is calculated according to an occurrence state of the reducing agent slip when the storage amount is changed. A basic supply amount of the reducing agent is calculated according to an operating condition of the engine or a NOx concentration on the upstream side of the selective reduction catalyst. A supply amount of the reducing agent is calculated by correcting the basic supply amount using the supply correction amount.

摘要翻译： 提供一种用于内燃机的废气净化装置。 在发动机的排气通道中设置选择还原催化剂，用于在还原剂存在下还原来自发动机的废气中的NOx。 将还原剂或用于产生还原剂的反应物供给到选择还原催化剂的上游侧。 确定将还原剂排出到选择还原催化剂的下游侧的还原剂滑移的发生。 从储存量最大的状态暂时减少表示存储在选择还原催化剂中的还原剂的量的储存量，此后，存储量增加，直到检测到还原剂滑移的发生 。 当存储量改变时，根据还原剂滑移的发生状态计算用于校正还原剂量的供给修正量。 根据发动机的运转状态或选择还原催化剂的上游侧的NOx浓度计算还原剂的基本供给量。 通过使用供给修正量来校正基本供给量来计算还原剂的供给量。

公开(公告)号：US20110192144A1

公开(公告)日：2011-08-11

申请号：US13005398

申请日：2011-01-12

申请人： Yuji YASUI

发明人： Yuji YASUI

IPC分类号： F01N3/18 ,  F01N11/00

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US20100256894A1

公开(公告)日：2010-10-07

申请号：US12572227

申请日：2009-10-01

申请人： Yuji YASUI

发明人： Yuji YASUI

IPC分类号： F02D41/00 ,  F01N11/00

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

摘要： 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.

摘要翻译： 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：US20120095658A1

公开(公告)日：2012-04-19

申请号：US13272992

申请日：2011-10-13

申请人： Yuji YASUI

发明人： Yuji YASUI

IPC分类号： B60W10/11 ,  G05B13/00 ,  B60W30/18 ,  F02D41/30 ,  F02D28/00

CPC分类号： F02D41/1403

摘要： A control apparatus which is capable of enhancing the accuracy of control of a controlled object having characteristics that dead time and response delay thereof vary. The control apparatus includes an ECU. The ECU calculates four predicted values as values of a controlled variable associated with respective times when four dead times elapse, respectively, calculates four weight function values associated with an exhaust gas volume, and calculates four products by multiplying the predicted values by the weight function values, respectively. The ECU sets the total sum of the four products as a predicted equivalent ratio and calculates an air-fuel ratio correction coefficient such that the predicted equivalent ratio becomes equal to a target equivalent ratio.

摘要翻译： 一种控制装置，其能够提高控制对象的控制精度，该控制对象的死区时间和响应延迟变化。 控制装置包括ECU。 ECU计算四个预测值，作为与四个死时间相应的时间相关联的受控变量的值分别计算与排气量相关联的四个加权函数值，并且通过将预测值乘以权重函数值来计算四个乘积 ， 分别。 ECU将四个乘积的总和设定为预测的当量比，并且计算出预测的当量比等于目标当量比的空燃比校正系数。

公开(公告)号：US20110313634A1

公开(公告)日：2011-12-22

申请号：US13115803

申请日：2011-05-25

申请人： Yuji YASUI ,  Eiji HASHIMOTO ,  Hisao HAGA ,  Koichi NAKAJIMA

发明人： Yuji YASUI ,  Eiji HASHIMOTO ,  Hisao HAGA ,  Koichi NAKAJIMA

IPC分类号： F02D28/00

CPC分类号： F02D41/0072 ,  F02D41/0047 ,  F02D41/0062 ,  F02D41/1402 ,  F02D41/1405 ,  F02D41/1456 ,  F02D41/187 ,  F02D2009/0272 ,  F02D2041/1433 ,  F02D2200/0402 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/23 ,  F02M26/38 ,  Y02T10/47

摘要： An EGR control apparatus for an internal combustion engine, which is capable of accurately controlling an inert gas amount and an inert gas ratio of two types of EGR gas supplied to cylinders of the engine via two paths different from each other, thereby making it possible to ensure a stable combustion state and reduced exhaust emissions. The EGR control apparatus includes a low-pressure EGR device, a high-pressure EGR device, and an ECU. The ECU calculates a target low-pressure opening, calculates an estimated value of an in-cylinder low-pressure inert gas flow rate, which is the estimated value of an inert gas amount included in low-pressure EGR gas supplied to the cylinders via an intake passage, calculates a target high-pressure opening using the estimated value, and controls low-pressure and high-pressure EGR control valves, using the target low-pressure opening and the target high-pressure opening.

摘要翻译： 一种用于内燃机的EGR控制装置，其能够通过彼此不同的两条路径精确地控制供给到发动机的气缸的两种EGR气体的惰性气体量和惰性气体比， 确保燃烧状态稳定，减少废气排放。 EGR控制装置包括低压EGR装置，高压EGR装置和ECU。 ECU计算目标低压开度，计算作为经由燃料供给到气缸的低压EGR气体中包含的惰性气体量的估计值的缸内低压惰性气体流量的推定值 进气通道使用该估计值计算目标高压开度，并且使用目标低压开口和目标高压开口来控制低压和高压EGR控制阀。

公开(公告)号：US20110192148A1

公开(公告)日：2011-08-11

申请号：US13013498

申请日：2011-01-25

申请人： Yuji YASUI

发明人： Yuji YASUI

IPC分类号： F01N3/18

CPC分类号： F01N3/208 ,  F01N3/103 ,  F01N11/00 ,  F01N2610/02 ,  F01N2900/0422 ,  F01N2900/1402 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust gas purifying apparatus for an internal combustion engine is provided. A selective reduction catalyst is disposed in an exhaust passage of the engine for reducing NOx in exhaust gases from the engine under existence of a reducing agent. The reducing agent or a reactant for generating the reducing agent is supplied to the upstream side of the selective reduction catalyst. Occurrence of a reducing-agent slip in which the reducing agent is discharged to the downstream side of the selective reduction catalyst is determined. A storage amount indicative of an amount of the reducing agent stored in the selective reduction catalyst is temporarily reduced from the state where the storage amount is at the maximum, and thereafter the storage amount is increased until the occurrence of the reducing-agent slip is detected. An accuracy of the reducing agent supply is determined according to an occurrence state of the reducing agent slip when the storage amount is changed.

摘要翻译： 提供一种用于内燃机的废气净化装置。 在发动机的排气通道中设置选择还原催化剂，用于在还原剂存在下还原来自发动机的废气中的NOx。 将还原剂或用于产生还原剂的反应物供给到选择还原催化剂的上游侧。 确定将还原剂排出到选择还原催化剂的下游侧的还原剂滑移的发生。 从储存量最大的状态暂时减少表示存储在选择还原催化剂中的还原剂的量的保存量，此后，存储量增加，直到检测到还原剂滑动的发生 。 当存储量改变时，根据还原剂滑移的发生状态来确定还原剂供应的精度。