公开(公告)号：US07484504B2

公开(公告)日：2009-02-03

申请号：US11858283

申请日：2007-09-20

申请人： Naoto Kato ,  Shuntaro Okazaki

发明人： Naoto Kato ,  Shuntaro Okazaki

IPC分类号： F02D41/00 ,  B60T7/12

CPC分类号： F02D41/2461 ,  F02D41/1441 ,  F02D41/1475 ,  F02D2041/1409 ,  F02D2041/1432

摘要： An air-fuel ratio control system includes: a catalyst; an oxygen concentration sensor; an integral value calculation portion that calculates an integral value of a deviation updated by integrating the deviation between an output value from the oxygen concentration sensor and a reference value; an air-fuel ratio control portion that controls an air-fuel ratio of exhaust gas entering the catalyst to be equal to a target air-fuel ratio; a target air-fuel ratio switching portion that sets a rich target air-fuel ratio when the output value has been inverted from rich to lean while sets a lean target air-fuel ratio when the output value has been inverted from lean to rich; and an integral value correction portion that corrects the integral value of the deviation when the air-fuel ratio is being controlled to a switched target air-fuel ratio, based on whether the next inversion takes place within a predetermined time period from the last inversion.

摘要翻译： 空燃比控制系统包括：催化剂; 氧浓度传感器; 积分值计算部，其计算通过对来自氧浓度传感器的输出值与参考值的偏差进行积分而更新的偏差的积分值; 控制进入催化剂的废气的空燃比等于目标空燃比的空燃比控制部; 目标空燃比切换部，其在将输出值从浓稀释为反转时设定浓的目标空燃比，同时在所述输出值从所述输出值反转为浓时设定稀薄目标空燃比; 以及积分值校正部，其基于在从最后的倒转的预定时间段内是否发生下一个反转，将空燃比被控制为切换目标空燃比时的偏差的积分值进行校正。

公开(公告)号：US07389174B2

公开(公告)日：2008-06-17

申请号：US10593877

申请日：2005-03-23

申请人： Shuntaro Okazaki

发明人： Shuntaro Okazaki

IPC分类号： G06F19/00 ,  F02D41/14 ,  F01N3/20

CPC分类号： F02D41/40 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/2454 ,  Y02T10/44

摘要： Under the assumption that in-cylinder intake air quantities which are imbibed into a combustion chamber are constant, and on the basis of the relationship that the product between a command final fuel injection quantity Fi (Fi(k−M)) and a detection air/fuel ratio abyfs(k) becomes equal to the product between a target command basic fuel injection quantity Fbaset for making the actual air/fuel ratio of an engine a target air/fuel ratio abyfr(k) and a target air/fuel ratio abyfr(k), this air/fuel ratio control apparatus evaluates the quantity Fbaset (=(abyfs(k)/abyfr(k))Fi(k−M)), and it divides the quantity Fbaset by an uncorrected command basic fuel injection quantity Fbaseb(k), thereby to evaluate a basic-fuel-injection-quantity correction coefficient KF (=Fbaset/Fbaseb(k)). The uncorrected command basic fuel injection quantity Fbaseb at the next time is multiplied by coefficient KF, thereby to successively correct the next uncorrected command basic fuel injection quantity Fbaseb.

摘要翻译： 假设吸入燃烧室内的缸内进入空气量是恒定的，并且基于命令最终燃料喷射量Fi（Fi（kM））和检测空气/燃料之间的关系 比率abyfs（k）变得等于用于使发动机的实际空气/燃料比目标空气/燃料比abyfr（k）和目标空气/燃料比abyfr（k）之间的目标指令基本燃料喷射量Fbaset之间的乘积 ），空燃比控制装置评价Fbaset（=（abyfs（k）/ abyfr（k））Fi（kM）），并且将数量Fbaset除以未校正的指令基本燃料喷射量Fbaseb（k） ，从而评价基本燃料喷射量校正系数KF（= Fbaset / Fbaseb（k））。 将下一次的未校正指令基本燃料喷射量Fbaseb乘以系数KF，从而连续校正下一未校正指令基本燃料喷射量Fbaseb。

公开(公告)号：US20080087259A1

公开(公告)日：2008-04-17

申请号：US11869129

申请日：2007-10-09

申请人： Naoto KATO ,  Shuntaro Okazaki

发明人： Naoto KATO ,  Shuntaro Okazaki

IPC分类号： F02D41/00

CPC分类号： F02D41/1454 ,  F02D41/1441 ,  F02D41/1458 ,  F02D41/1482 ,  F02D41/2454 ,  F02D2041/1409 ,  F02D2041/1419 ,  F02D2041/1422 ,  F02D2041/1433

摘要： An air-fuel ratio control system includes: a catalyst; an A/F sensor provided upstream of the catalyst; an oxygen concentration sensor provided downstream of the catalyst; an output value estimation portion that estimates the output value of the oxygen concentration sensor using a model related to the catalyst and the oxygen concentration sensor; an integral value calculation portion that calculates an integral value of deviation being updated by integrating the difference between the actual oxygen concentration output value and the estimated output value; a correction value calculation portion that calculates a feedback correction value for the output value of the A/F sensor and a target air-fuel ratio at least based on the integral value of deviation; and an air-fuel ratio control portion that zeros a first deviation that is obtained by correcting the difference between the detected air-fuel ratio and the target air-fuel ratio, using the feedback correction value.

摘要翻译： 空燃比控制系统包括：催化剂; 设置在催化剂上游的A / F传感器; 设置在催化剂下游的氧浓度传感器; 输出值估计部，其使用与所述催化剂和所述氧浓度传感器有关的模型来估计所述氧浓度传感器的输出值; 积分值计算部分，通过对实际氧浓度输出值和估计输出值之间的差进行积分来计算正在更新的偏差积分值; 校正值计算部分，至少基于偏差的积分值计算A / F传感器的输出值的反馈校正值和目标空燃比; 以及空燃比控制部，其使用所述反馈修正值，将通过校正所述检测出的空燃比与所述目标空燃比之间的差而获得的第一偏差置零。

公开(公告)号：US07032374B2

公开(公告)日：2006-04-25

申请号：US10768141

申请日：2004-02-02

申请人： Shuntaro Okazaki ,  Noriyasu Adachi ,  Naoto Kato ,  Toshinari Nagai ,  Yasuhiro Oi ,  Daisuke Kobayashi ,  Akira Ohata ,  Koji Ide

发明人： Shuntaro Okazaki ,  Noriyasu Adachi ,  Naoto Kato ,  Toshinari Nagai ,  Yasuhiro Oi ,  Daisuke Kobayashi ,  Akira Ohata ,  Koji Ide

IPC分类号： F01N3/00

CPC分类号： F02D41/0087 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N2430/06 ,  F02D41/0235 ,  F02D41/024 ,  F02D41/086 ,  F02D41/12 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2041/1409 ,  F02D2041/1418 ,  F02D2041/1432 ,  F02D2200/0802 ,  Y02T10/22 ,  Y02T10/26

摘要： An exhaust purification apparatus for an internal combustion engine includes a catalyst unit disposed in an exhaust passage of the engine, upstream and downstream air-fuel-ratio sensors disposed upstream and downstream, respectively, of the catalyst unit, a main-feedback controller, and a sub-feedback controller. The main-feedback controller calculates a main-feedback control quantity on the basis of an output value of the upstream air-fuel-ratio sensor and a predetermined upstream-side target value, and corrects, on the basis of the main-feedback control quantity, the quantity of fuel injected by an fuel injector. The sub-feedback controller calculates a sub-feedback control quantity on the basis of an output value of the downstream air-fuel-ratio sensor and a predetermined downstream-side target value, and corrects, on the basis of the sub-feedback control quantity, the quantity of fuel injected by the fuel injector, independently of the correction of the fuel injection quantity by the main-feedback control means.

摘要翻译： 用于内燃机的排气净化装置包括设置在发动机的排气通道中的催化剂单元，分别设置在催化单元的上游和下游的上游和下游空燃比传感器，主反馈控制器和 一个子反馈控制器。 主反馈控制器基于上游空燃比传感器的输出值和规定的上游侧目标值计算主反馈控制量，并根据主反馈控制量 ，由燃料喷射器喷射的燃料量。 副反馈控制器基于下游空燃比传感器的输出值和预定的下游侧目标值计算副反馈控制量，并且基于副反馈控制量 ，由燃料喷射器喷射的燃料量与主反馈控制装置的燃料喷射量的校正无关。

公开(公告)号：US09683470B2

公开(公告)日：2017-06-20

申请号：US14368832

申请日：2011-12-27

申请人： Takahiko Fujiwara ,  Norihisa Nakagawa ,  Kouichi Kimura ,  Shuntaro Okazaki ,  Keisuke Nagasaka ,  Ichiro Kitamura ,  Satoshi Kamitani ,  Koji Morita

发明人： Takahiko Fujiwara ,  Norihisa Nakagawa ,  Kouichi Kimura ,  Shuntaro Okazaki ,  Keisuke Nagasaka ,  Ichiro Kitamura ,  Satoshi Kamitani ,  Koji Morita

IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N9/00 ,  F01N11/00 ,  F02D41/02 ,  F01N3/10

CPC分类号： F01N3/2006 ,  F01N3/101 ,  F01N3/20 ,  F01N3/22 ,  F01N9/00 ,  F01N11/00 ,  F01N2240/02 ,  F01N2260/04 ,  F01N2430/08 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2590/11 ,  F01N2900/10 ,  F02D41/0255 ,  Y02T10/22 ,  Y02T10/47

摘要： An exhaust gas control apparatus for an internal combustion engine, controls an exhaust operation of the internal combustion engine (200) provided with an exhaust gas purification catalyst (216) in an exhaust passage (215). The exhaust gas control apparatus for the internal combustion engine is provided with; a warming-up device configured to warm up the exhaust gas purification catalyst; and an oxygen supplying device (220, 221) configured to supply oxygen to the exhaust gas purification catalyst after the end of the warm-up. This makes it possible to preferably desorb sulfur adsorbed to the exhaust gas purification catalyst during warm-up. It is therefore possible to suppress a reduction in purification ability of the exhaust gas purification catalyst due to sulfur coating.

公开(公告)号：US09037383B2

公开(公告)日：2015-05-19

申请号：US13210997

申请日：2011-08-16

申请人： Shuntaro Okazaki

发明人： Shuntaro Okazaki

IPC分类号： F01N11/00 ,  F02D41/14 ,  F02D41/24

CPC分类号： F02D41/1483 ,  F02D41/1441 ,  F02D41/1482 ,  F02D41/2454 ,  F02D2041/1422

摘要： A fuel injection amount control apparatus calculates as a proportional term a value obtained by multiplying by a proportional gain Kp a deviation DVoxslow between a downstream side target value Voxsref and an output value Voxs of a downstream side air-fuel ratio sensor disposed downstream of a catalyst. The control apparatus calculates a time integrated value SDVoxslow by integrating a value obtained by multiplying by a predetermined adjustment gain K the deviation DVoxslow, calculates a value that is commensurate with the time integrated value SDVoxslow as an integral term Ki×SDVoxslow, and obtains the integral term Ki×SDVoxslow as a sub-FB learned value KSFBg. The control apparatus sets the proportional gain Kp at a small value after the sub-FB learned value KSFBg is determined to have converged, and sets the adjustment gain K at a small value after the sub-FB learned value KSFBg is determined to have converged.

摘要翻译： 燃料喷射量控制装置将比例增益Kp乘以下游侧目标值Voxsref与设置在催化剂下游侧的下游侧空燃比传感器的输出值Voxs之间的偏差DVoxslow而求出的值作为比例项 。 控制装置通过将通过将预定调节增益K乘以偏差DVoxslow获得的值来计算时间积分值SDVoxslow，计算与时间积分值SDVoxslow相当的值作为积分项Ki×SDVoxslow，并获得积分 术语Ki×SDVoxslow作为子FB学习值KSFBg。 在确定子FB学习值KSFBg已经收敛之后，控制装置将比例增益Kp设定为小值，并且在子FB学习值KSFBg被确定为收敛之后将调整增益K设置为小的值。

公开(公告)号：US20150128572A1

公开(公告)日：2015-05-14

申请号：US14368832

申请日：2011-12-27

申请人： Takahiro Fujiwara ,  Norihisa Nakagawa ,  Kouichi Kimura ,  Shuntaro Okazaki ,  Keisuke Nagasaka ,  Ichiro Kitamura ,  Satoshi Kamitani ,  Koji Morita

发明人： Takahiro Fujiwara ,  Norihisa Nakagawa ,  Kouichi Kimura ,  Shuntaro Okazaki ,  Keisuke Nagasaka ,  Ichiro Kitamura ,  Satoshi Kamitani ,  Koji Morita

IPC分类号： F01N3/20 ,  F02D41/02

CPC分类号： F01N3/2006 ,  F01N3/101 ,  F01N3/20 ,  F01N3/22 ,  F01N9/00 ,  F01N11/00 ,  F01N2240/02 ,  F01N2260/04 ,  F01N2430/08 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2590/11 ,  F01N2900/10 ,  F02D41/0255 ,  Y02T10/22 ,  Y02T10/47

摘要： An exhaust gas control apparatus for an internal combustion engine, controls an exhaust operation of the internal combustion engine (200) provided with an exhaust gas purification catalyst (216) in an exhaust passage (215). The exhaust gas control apparatus for the internal combustion engine is provided with a warming-up device configured to warm up the exhaust gas purification catalyst; and an oxygen supplying device (220, 221) configured to supply oxygen to the exhaust gas purification catalyst after the end of the warm-up. This makes it possible to preferably desorb sulfur adsorbed to the exhaust gas purification catalyst during warm-up. It is therefore possible to suppress a reduction in purification ability of the exhaust gas purification catalyst due to sulfur coating.

摘要翻译： 一种用于内燃机的排气控制装置，控制在排气通道（215）中设置有排气净化催化剂（216）的内燃机（200）的排气操作。 用于内燃机的排气控制装置设置有预热装置，其被配置为预热排气净化催化剂; 以及氧气供给装置（220,221），其构造成在所述预热结束后向所述排气净化催化剂供给氧。 这使得可以优选在预热期间解吸吸附到废气净化催化剂上的硫。 因此，能够抑制由于硫化而导致的排气净化催化剂的净化能力的降低。

公开(公告)号：US08903624B2

公开(公告)日：2014-12-02

申请号：US13997810

申请日：2011-02-24

申请人： Satoshi Yoshizaki ,  Shuntaro Okazaki ,  Masashi Shibayama ,  Kaoru Shokatsu ,  Hajime Kawakami

发明人： Satoshi Yoshizaki ,  Shuntaro Okazaki ,  Masashi Shibayama ,  Kaoru Shokatsu ,  Hajime Kawakami

IPC分类号： F02D9/00 ,  F02D41/00 ,  F02D11/10 ,  F02D37/02 ,  F02D43/00

CPC分类号： F02D41/00 ,  F02D11/105 ,  F02D37/02 ,  F02D41/0002 ,  F02D43/00 ,  F02D2200/0625 ,  F02D2250/18 ,  F02D2250/21 ,  Y02T10/42

摘要： When a change amount of any one of a demanded torque, a demanded efficiency, and a demanded air-fuel ratio exceeds a predetermined threshold value, an internal combustion engine control apparatus provided by this invention makes a temporary adjustment to a value of any one of a demanded torque, a demanded efficiency and instructed efficiency, and a demanded air-fuel ratio in accordance with a type of demanded engine performance that is currently being given priority among various performances demanded of the internal combustion engine. In the present control apparatus, an actuator for air amount control is operated in accordance with a target air amount calculated based on a demanded torque and a demanded efficiency, an actuator for ignition timing control is operated in accordance with an instructed efficiency, and an actuator for fuel injection amount control is operated in accordance with a demanded air-fuel ratio.

摘要翻译： 当要求扭矩，要求效率和所需空燃比中的任何一个的变化量超过预定阈值时，由本发明提供的内燃机控制装置进行临时调整， 根据目前在内燃机所要求的各种性能中优先考虑的要求的发动机性能的类型，要求的扭矩，要求的效率和指示的效率以及所需的空燃比。 在本控制装置中，根据要求转矩和要求效率计算出的目标空气量来操作用于空气量控制的致动器，根据指示的效率来操作点火正时控制的致动器，并且致动器 燃料喷射量控制根据所需的空燃比进行运转。

公开(公告)号：US08887491B2

公开(公告)日：2014-11-18

申请号：US14002188

申请日：2011-03-01

申请人： Koichi Kimura ,  Junichi Suzuki ,  Shuntaro Okazaki

发明人： Koichi Kimura ,  Junichi Suzuki ,  Shuntaro Okazaki

IPC分类号： F01N3/00 ,  F02D41/02 ,  F02D41/00 ,  F02M25/08 ,  F02D41/14

CPC分类号： F02D41/0235 ,  F02D41/0032 ,  F02D41/0295 ,  F02D41/1454 ,  F02M25/089

摘要： A control apparatus for an internal combustion engine determines, based on an output value of the downstream air-fuel ratio sensor, an air-fuel ratio of a gas flowing into the catalyst that is set to either a “target rich ratio” or a “target lean ratio”, and determines a fuel injection amount. Disclosed is an evaporated fuel purge section for introducing an evaporated fuel generated in a fuel tank into an intake passage. The purge section starts the purge when the target air-fuel ratio is set to the target rich ratio at a purge execution condition satisfied time point at which a state has changed from a state in which the purge execution condition is unsatisfied to a state in which it is satisfied, and does not start the purge when the target air-fuel ratio is set to the target lean air-fuel ratio at the purge execution condition satisfied time point.

摘要翻译： 用于内燃机的控制装置基于下游空燃比传感器的输出值确定流入催化剂的气体的空燃比设定为“目标浓缩比”或“ 目标精益比“，并且确定燃料喷射量。 公开了一种用于将在燃料箱中产生的蒸发燃料引入进气通道的蒸发燃料吹扫部分。 当清洗执行条件的状态已经从清洗执行条件不满足的状态变为满足时间点的目标空燃比被设定为目标浓缩比时，净化部开始吹扫，其中， 当在清洗执行条件满足时间点将目标空燃比设定为目标稀空燃比时，不满足，不开始吹扫。

公开(公告)号：US08793058B2

公开(公告)日：2014-07-29

申请号：US13121325

申请日：2010-10-12

申请人： Shuntaro Okazaki ,  Satoshi Yoshizaki ,  Masashi Shibayama ,  Kaoru Shokatsu ,  Hajime Kawakami

发明人： Shuntaro Okazaki ,  Satoshi Yoshizaki ,  Masashi Shibayama ,  Kaoru Shokatsu ,  Hajime Kawakami

IPC分类号： B60T7/12

CPC分类号： F02D11/105 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/1475 ,  F02D2041/1431 ,  F02D2041/1432 ,  F02P5/1504 ,  Y02T10/42 ,  Y02T10/46

摘要： A control device for an internal combustion engine provided by the present invention is a control device which can satisfy both a requirement relating to exhaust gas performance of the internal combustion engine and a requirement relating to operation performance by properly regulating a change speed of a required air-fuel ratio, in the internal combustion engine which uses torque and an air-fuel ratio as control variables. The control device receives the requirement relating to the exhaust gas performance of the internal combustion engine, and calculates an air-fuel ratio which satisfies the requirement as a required air-fuel ratio. When a predetermined reduction condition is not satisfied, an original required air-fuel ratio is directly determined as a final required air-fuel ratio. However, when the reduction condition is satisfied, the change speed is reduced by processing the signal of the original required air-fuel ratio, and determines the required air-fuel ratio with the change speed reduced as the final required air-fuel ration. The reduction condition includes a condition that the change amount of the original required air-fuel ratio, in more detail, a change amount per calculation period is larger than a predetermined air-fuel ratio change determination value.

摘要翻译： 本发明提供的用于内燃机的控制装置是一种控制装置，其能够通过适当地调节所需空气的变速来满足与内燃机的废气性能有关的要求和与运行性能有关的要求 - 燃料比，在使用转矩和空燃比作为控制变量的内燃机中。 控制装置接收与内燃机的排气性能有关的要求，并且计算满足要求的空燃比作为所需的空燃比。 当不满足预定的减少条件时，原始所需的空燃比被直接确定为最终所需的空燃比。 然而，当满足减速条件时，通过处理原始所需空燃比的信号来降低变速，并且随着最终所需空燃比降低变速而确定所需的空燃比。 还原条件包括原始所需空燃比的变化量，更详细地说，每个计算周期的变化量大于预定的空燃比变化判定值的条件。