公开(公告)号：JP2013007278A

公开(公告)日：2013-01-10

申请号：JP2011138733

申请日：2011-06-22

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： ADACHI KATSUMI ,  KITANO SHOTA ,  TANAKA HITOSHI ,  NAKAJIMA ISAO ,  ODA SUMIHISA ,  HAKARIYA MASAFUMI ,  KUSHIHAMA KIYOTAKA ,  NODA KAZUYUKI ,  KATAYAMA AKIHIRO ,  OBARA YUICHI

IPC: F02D45/00 ,  F02D41/02 ,  F02D41/14 ,  F02D41/22

CPC classification number: Y02T10/40

Abstract: PROBLEM TO BE SOLVED: To provide an inter-cylinder air-fuel ratio dispersion abnormality detection device capable of controlling degradation of exhaust emission in a multi-cylinder internal combustion engine.SOLUTION: The inter-cylinder air-fuel ratio dispersion abnormality detection device includes: an air-fuel ratio feedback control means for controlling the air-fuel ratio to the predetermined target air-fuel ratio based on the output of an air-fuel ratio detection means; a learning control means for performing the learning control while performing the feedback control; a fuel injection amount change control means for performing the fuel injection amount change control for forcibly changing the fuel injection amount of the predetermined object cylinder by the predetermined amount; and a detection means for detecting the inter-cylinder air-fuel ratio dispersion abnormality based on the rotational fluctuation of the predetermined object cylinder before and after the change when the fuel injection amount change control is performed to the predetermined object cylinder. When the fuel injection amount change control is performed by the fuel injection amount change control means, the learning control by the learning control means is stopped. Further, the target air-fuel ratio in the air-fuel ratio feedback control is changed from the predetermined target air-fuel ratio by the amount corresponding to the change amount in the fuel injection amount of the predetermined object cylinder in the fuel injection amount change control.

Abstract translation: 解决的问题：提供一种能够控制多气缸内燃机的废气排放的劣化的气缸间空燃比色散异常检测装置。 解决方案：气缸间空燃比色散异常检测装置包括：空燃比反馈控制装置，用于根据空气 - 燃料比的输出控制空燃比至预定目标空燃比; 燃料比检测装置; 学习控制装置，用于在执行反馈控制的同时执行学习控制; 燃料喷射量变更控制装置，用于执行燃料喷射量变更控制，以强制地将所述预定物料筒的燃料喷射量改变预定量; 以及检测装置，用于当对预定物体气缸执行燃料喷射量改变控制时，基于在预定物体滚筒的变化之前和之后的旋转波动来检测气缸间空燃比分散异常。 当通过燃料喷射量变化控制装置执行燃料喷射量变化控制时，学习控制装置的学习控制被停止。 此外，将空燃比反馈控制中的目标空燃比从预定目标空燃比改变为与燃料喷射量变化中的预定物料筒的燃料喷射量的变化量相对应的量 控制。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012246903A

公开(公告)日：2012-12-13

申请号：JP2011121784

申请日：2011-05-31

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TANAKA HITOSHI ,  NAKAJIMA ISAO ,  ODA SUMIHISA ,  KUSHIHAMA KIYOTAKA ,  KITANO SHOTA ,  NODA KAZUYUKI ,  ADACHI KATSUMI ,  HAKARIYA MASAFUMI ,  OBARA YUICHI ,  KATAYAMA AKIHIRO

IPC: F02D41/14 ,  F01N3/36 ,  F02D41/02 ,  F02D41/22 ,  F02D45/00

CPC classification number: Y02T10/40

Abstract: PROBLEM TO BE SOLVED: To provide a multi-cylinder internal combustion engine capable of preventing exhaust emission deterioration due to execution of failure detection.SOLUTION: This multi-cylinder internal combustion engine provided with an inter-cylinder air-fuel ratio variation failure detection device includes: an air-fuel ratio detection means (20, 21) for detecting an air-fuel ratio of exhaust gas; and a detection means (100) for increasing a fuel injection amount of a predetermined target cylinder and detecting inter-cylinder air-fuel ratio variation failure on the basis of rotation variation of the target cylinder at least after the increase; and a secondary air introduction means (30, 32, 34) for introducing secondary air in an exhaust passage. The exhaust emission deterioration is prevented by executing and controlling the introduction of the secondary air by the secondary air introduction means, in association with the increase in the fuel injection amount by the detection means.

Abstract translation: 要解决的问题：提供一种能够防止由于执行故障检测而引起的废气劣化的多气缸内燃机。 解决方案：具备缸内空燃比变动故障检测装置的多气缸内燃机具备：空燃比检测机构（20,21），其检测废气的空燃比 ; 以及检测装置（100），用于至少在增加之后基于目标气缸的旋转变化来增加预定目标气缸的燃料喷射量并检测缸间空燃比变化故障; 以及用于在排气通道中引入二次空气的二次空气引入装置（30,32,34）。 与通过检测装置的燃料喷射量的增加相关联地执行和控制二次空气引入装置引入二次空气来防止废气排放恶化。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2006214327A

公开(公告)日：2006-08-17

申请号：JP2005027217

申请日：2005-02-03

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： HAKARIYA MASAFUMI ,  KADOOKA TAKU

IPC: F02D45/00 ,  F02D41/18

CPC classification number: F02D41/008 ,  F02D41/182 ,  F02D2200/0406 ,  F02D2200/0408

Abstract: PROBLEM TO BE SOLVED: To accurately calculate a cylinder filled air quantity by computing an intake pressure drop quantity of each corresponding cylinder from a respective upward peak pressure and downward peak pressure.
SOLUTION: The control device calculates a differential value of intake pressure while successively detecting the intake pressure by a pressure sensor 40, sets a peak pressure detection range of each cylinder on the basis of the intake pressure differential value, detects the upward peak pressure and downward peak pressure of the intake pressure included within the peak pressure detection range of each cylinder respectively, and computes the intake pressure drop quantity of the corresponding cylinder from the respective upward peak pressure and downward peak pressure. A cylinder filled air quantity is calculated on the basis of the intake pressure drop quantity.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：通过从相应的上升峰值压力和下降的峰值压力计算每个对应的气缸的进气压力下降量来精确地计算气缸填充空气量。 解决方案：控制装置在通过压力传感器40连续检测进气压力的同时，计算进气压力的微分值，根据进气压力差值设定各气缸的峰值压力检测范围，检测上升峰值 进气压力的压力和下降峰值压力分别包括在每个气缸的峰值压力检测范围内，并根据各自的上升峰值压力和下降峰值压力计算相应气缸的进气压力下降量。 基于进气压降量计算气缸填充空气量。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005069141A

公开(公告)日：2005-03-17

申请号：JP2003301459

申请日：2003-08-26

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MUTO HARUFUMI ,  MIYANOO YUJI ,  EIRAKU REI ,  HAKARIYA MASAFUMI

IPC: F02D45/00 ,  F02D9/02 ,  F02D13/02

CPC classification number: F02D13/02 ,  F02D9/02 ,  F02D13/0226 ,  F02D41/0002 ,  F02D2041/002 ,  F02D2041/1437 ,  F02D2200/0402 ,  F02D2200/602 ,  Y02T10/18 ,  Y02T10/42

Abstract: PROBLEM TO BE SOLVED: To provide an intake air quantity control device and an intake air quantity control method for determining target opening of a throttle valve by a novel method, in the intake air quantity control device and the intake air quantity control method of an internal combustion engine having a throttle valve and an intake air quantity variable means for cooperating with this throttle valve.
SOLUTION: This device and the method controls an intake air quantity in the internal combustion engine having the throttle valve and the intake air quantity variable means for cooperating with this throttle valve. A target intake air quantity mcta is determined on the basis of accelerator opening and an engine speed (Step 101). A target setting state Cvta on the intake air quantity variable means is determined on the basis of at least the target intake air quantity (Step 103). Target throttle opening θtta is determined on the basis of a model expression expressed on air passing through an engine intake air system, by modeling the engine intake air system from the target intake air quantity mcta and the target setting state Cvta (Step 107).
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种通过新方法确定节流阀的目标开度的进气量控制装置和进气量控制方法，在进气量控制装置和进气量控制方法中 具有节气门的内燃机和与该节流阀配合的进气量可变装置。 解决方案：该装置和方法控制具有节气门的内燃机和与该节流阀配合的进气量可变装置的进气量。 基于加速器开度和发动机转速来确定目标进气量mcta（步骤101）。 基于至少目标进气量确定进气量变量单元的目标设定状态Cvta（步骤103）。 基于通过发动机进气系统的空气表达的模型表达式，通过从目标进气量mcta和目标设定状态Cvta对发动机进气系统进行建模来确定目标节气门开度θtta（步骤107）。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2014190270A

公开(公告)日：2014-10-06

申请号：JP2013067210

申请日：2013-03-27

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： NAKAJIMA ISAO ,  MATSUDA YOSHIFUMI ,  ODA SUMIHISA ,  HAKARIYA MASAFUMI ,  OKADA MASAHIDE ,  TSUJI HIROAKI ,  ITO TOKIJI ,  SHIMADA TATSURO ,  KATO TOSHIHIRO ,  YOSHIKAWA YUYA

IPC: F02D45/00

CPC classification number: G01M15/102 ,  F01N11/00 ,  F01N11/007 ,  F02D41/1454 ,  F02D41/1495 ,  F02D41/18 ,  F02D41/22 ,  F02D41/222 ,  G01M15/10 ,  G01M15/104 ,  G01N1/2252 ,  Y02T10/42 ,  Y02T10/44 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To provide an abnormality detection device of an internal combustion engine which prevents defect abnormality of a downstream side sensor which is disposed on the downstream of exhaust purification catalyst in an exhaust passage and generates an output in accordance with oxygen concentration in exhaust when inter-cylinder air fuel rate variation is large from being erroneously detected, in an internal combustion engine having a plurality of cylinders.SOLUTION: An abnormality detection device of an internal combustion engine includes sensor defect abnormality detection means which detects that there is defect abnormality on a detection element of a downstream side sensor based on bias of a distribution of output of the downstream side sensor into such a region as to exhibit that air-fuel ratio is lean as compared to the theoretical air-fuel ratio when intake air amount is a first predetermined amount or more and inhibition means configured so as to inhibit detection of defect abnormality of a detection element by means of the sensor defect abnormality detection means when the intake air amount exceeds a second predetermined amount more than the first predetermined amount.

Abstract translation: 要解决的问题：提供一种内燃机的异常检测装置，其防止排气通道中排气净化催化剂的下游设置的下游侧传感器的缺陷异常，并根据排气中的氧浓度生成输出 在具有多个气缸的内燃机中，当气缸内空燃比变化较大时，内燃机的异常检测装置具有检测出有缺陷异常的传感器缺陷异常检测单元 在下游侧传感器的检测元件上，基于下游侧传感器的输出分布的偏差到这样的区域，以便当进气量为空气量为空燃比时，空燃比为理想空燃比 第一预定量或更多的禁止装置以及禁止检测的禁止装置 当进气量超过第一预定量的第二预定量时，借助于传感器缺陷异常检测装置检测元件的缺陷异常。

公开(公告)号：JP2014190269A

公开(公告)日：2014-10-06

申请号：JP2013067208

申请日：2013-03-27

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： KATO TOSHIHIRO ,  MATSUDA YOSHIFUMI ,  ODA SUMIHISA ,  HAKARIYA MASAFUMI ,  OKADA MASAHIDE ,  NAKAJIMA ISAO ,  TSUJI HIROAKI ,  ITO TOKIJI ,  YOSHIKAWA YUYA

IPC: F02D41/34 ,  F02D45/00

CPC classification number: F02D41/1441 ,  F02D41/1443 ,  F02D41/1486 ,  F02D41/221 ,  F02D41/3094

Abstract: PROBLEM TO BE SOLVED: To suitably perform fuel injection with a large degree of variation in air-fuel ratios between cylinders in an internal combustion engine having a plurality of fuel injection valves on each of a plurality of cylinders.SOLUTION: A control device of an internal combustion engine has means which: performs fuel injection through a first fuel injection valve and a second fuel injection valve provided on each cylinder with a predetermined first proportion; calculates a first value Xindicating a degree of variation in air-fuel ratios between the cylinders on the basis of a predetermined output of the internal combustion engine associated with the fuel injection; performs the fuel injection with a predetermined second proportion; and calculates a second value Xin a manner equal to the first value. The control device also has the means which: selects one of modes including the same related to abnormality of the first fuel injection valve or the second fuel injection valve on the basis of the first value and the second value; calculates the value representing the degree of variation in the air-fuel ratios between the cylinders; and calculates a fuel amount based on the mode and value.

Abstract translation: 要解决的问题：在多个气缸中的每个具有多个燃料喷射阀的内燃机中适当地执行燃料喷射，其中气缸之间的空气 - 燃料比的变化很大。解决方案：一种控制装置 内燃机具有通过第一燃料喷射阀和设置在每个气缸上的第二燃料喷射阀以预定的第一比例进行燃料喷射的装置; 计算第一值X，基于与燃料喷射相关联的内燃机的预定输出，指示气缸之间的空燃比的变化程度; 以预定的第二比例执行燃料喷射; 并且以等于第一值的方式计算第二值Sin。 控制装置还具有：基于第一值和第二值，选择与第一燃料喷射阀或第二燃料喷射阀的异常有关的模式之一; 计算表示气缸之间的空燃比的变化程度的值; 并根据模式和值计算燃料量。

公开(公告)号：JP2014163274A

公开(公告)日：2014-09-08

申请号：JP2013034702

申请日：2013-02-25

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： OKADA MASAHIDE ,  HAKARIYA MASAFUMI ,  MATSUDA YOSHIFUMI ,  ODA SUMIHISA ,  TSUJI HIROAKI ,  ITO TOKIJI ,  NAKAJIMA ISAO ,  KATO TOSHIHIRO ,  YOSHIKAWA YUYA

IPC: F02D41/14 ,  F02D41/22 ,  F02D45/00

CPC classification number: F02D41/1495 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1455 ,  F02D41/1475 ,  F02D41/222 ,  F02D41/30 ,  Y02T10/40

Abstract: PROBLEM TO BE SOLVED: To properly control an air-fuel ratio on the basis of output of an oxygen sensor disposed at a downstream side of an exhaust purification catalyst of an exhaust passage.SOLUTION: A control device of an internal combustion engine of an embodiment, includes means for controlling an air-fuel ratio on the basis of output of an air-fuel ratio sensor disposed at an upstream side of a catalyst, and correcting the control of the air-fuel ratio on the basis of output of an oxygen sensor, and means for determining limitation on the correction of the air-fuel ratio control in the direction to suppress enriching of the air-fuel ratio in accordance with increase of a degree of shifting of the output of the oxygen sensor to a lean side, when it is determined that a degree of output tendency in a prescribed lean region is a prescribed lean degree or more, and a degree of output tendency in a prescribed rich region is less than a prescribed rich degree on the basis of a lean tendency value and a rich tendency value indicating the output tendency of the oxygen sensor.

Abstract translation: 要解决的问题：基于设置在排气通道的排气净化催化剂的下游侧的氧传感器的输出来适当地控制空燃比。解决方案：实施例的内燃机的控制装置 包括基于设置在催化剂的上游侧的空燃比传感器的输出来控制空燃比的装置，并且基于氧传感器的输出来校正空燃比的控制 以及用于根据氧传感器的输出向瘦侧移动的程度的增加来确定在抑制空燃比的富集方向上的空燃比控制的限制的限制的装置，当 确定在规定的稀薄区域中的输出倾向度是规定的稀薄度以上，并且在规定的浓淡区域中的输出倾向的程度根据倾斜倾向小于规定的浓度 表示氧传感器的输出趋势的浓度值和丰富的趋势值。

公开(公告)号：JP2013011246A

公开(公告)日：2013-01-17

申请号：JP2011145604

申请日：2011-06-30

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： TANAKA HITOSHI ,  KUSHIHAMA KIYOTAKA ,  NAKAJIMA ISAO ,  NODA KAZUYUKI ,  KITANO SHOTA ,  HAKARIYA MASAFUMI ,  OBARA YUICHI ,  ADACHI KATSUMI ,  KATAYAMA AKIHIRO ,  ODA SUMIHISA

IPC: F02D45/00 ,  F02D41/02

Abstract: PROBLEM TO BE SOLVED: To prevent the deterioration of balance in vibration in an entire engine by the execution of failure detection.SOLUTION: A device for detecting an abnormal variation inter-cylinder air-fuel ratio regarding the V-type multicylindered internal combustion engine changes a fuel injection amount of predetermined target cylinders by increasing or decreasing the amount, and detects the abnormal variation of the inter-cylinder air-fuel ratio, based on at least rotation changes in the target cylinders after when the changed amount. The fuel injection amount is changed a plurality of cylinders that are some of all of the cylinders, at least a pair of facing cylinders in the same engine cycle, and whose ingnition intervals are uniform as the target cylinders.

Abstract translation: 要解决的问题：通过执行故障检测来防止整个发动机的振动平衡的恶化。 解决方案：用于检测关于V型多缸内燃机的异常变化的缸间空燃比的装置通过增加或减少量来改变预定目标气缸的燃料喷射量，并且检测异常变化 所述缸间空燃比基于至少在所述变化量之后的目标气缸的旋转变化。 燃料喷射量在同一发动机循环中改变多个气缸中的一些气缸，至少一对相对的气缸，并且其入口间隔作为目标气缸是均匀的。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013011204A

公开(公告)日：2013-01-17

申请号：JP2011143416

申请日：2011-06-28

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： NAKAJIMA ISAO ,  ODA SUMIHISA ,  HAKARIYA MASAFUMI ,  TANAKA HITOSHI ,  KUSHIHAMA KIYOTAKA ,  KITANO SHOTA ,  NODA KAZUYUKI ,  ADACHI KATSUMI ,  OBARA YUICHI ,  KATAYAMA AKIHIRO

IPC: F02D45/00 ,  F02D41/14 ,  F02D41/22

CPC classification number: Y02T10/40

Abstract: PROBLEM TO BE SOLVED: To promptly identify a cylinder with an abnormal air-fuel ratio in a multi-cylinder internal combustion engine, and identify whether the air-fuel ratio in the cylinder deviates toward a lean or rich side.SOLUTION: A device for detecting an abnormal air-fuel ratio variation among cylinders of a multi-cylinder internal combustion engine includes: a fuel injection amount changing control unit for performing fuel injection amount changing control such that the fuel injection amount for a predetermined target cylinder is forcibly changed by a predetermined amount; a value deriving unit for deriving a value showing output variation of the predetermined target cylinder; and a detection unit for detecting, based on a comparison result between a value derived by the value deriving unit when the fuel injection amount changing control is not performed and a value derived by the value deriving unit when the fuel injection amount changing control is performed, whether the predetermined target cylinder has an abnormal air-fuel ratio, and if any, the kind of abnormal condition of the target cylinder.

Abstract translation: 要解决的问题：为了及时识别在多气缸内燃机中具有异常空燃比的气缸，并且识别气缸中的空燃比是偏向偏向还是富侧。 解决方案：一种用于检测多缸内燃机的气缸之间的异常空燃比变动的装置，包括：燃料喷射量变更控制单元，其执行燃料喷射量变更控制，使得燃料喷射量为 预定目标气缸被强制改变预定量; 值导出单元，用于导出表示所述预定目标气缸的输出变化的值; 以及检测单元，用于基于当不执行燃料喷射量改变控制时由值导出单元导出的值与当执行燃料喷射量变更控制时由值导出单元导出的值之间的比较结果进行检测， 目标气缸的异常状态是否为异常空燃比。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2009162139A

公开(公告)日：2009-07-23

申请号：JP2008001355

申请日：2008-01-08

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： OKAZAKI SHUNTARO ,  KIMURA NORIFUMI ,  TSUJI HIROAKI ,  HAKARIYA MASAFUMI ,  KATAYAMA AKIHIRO ,  KATO NAOTO

IPC: F02D41/14 ,  F01N3/24 ,  F02D41/04 ,  F02D43/00 ,  F02D45/00

Abstract: PROBLEM TO BE SOLVED: To accurately compensate an error of an intake/exhaust system even if a disturbance occurs when an integral processing value is significantly deviated from a convergent value in an air-fuel ratio control device for feedback controlling an air-fuel ratio based on the integral processing value calculated from an output value of an air-fuel ratio sensor arranged downstream of a catalyst.
SOLUTION: This device sets a change speed of an integral processing value SDVoxs with three steps when it is judged that deviation of the integral processing value SDVoxs from a convergent value (SDVoxs1) is large. In a step 1, the change speed is set to a large value, and the integral processing value SDVoxs is lean-deviated by a disturbance of a rich control and the like after FC, but can quickly approach to a value near the convergent value at a certain value. In a step 2, the change speed is changed to a moderate value, so that the integral processing value SDVoxs can further approach to the convergent value while restraining influences of the disturbance. In a step 3, the change speed is changed to a small value, so that the integral processing value SDVoxs can stably be shifted to a value near the convergent value. Accordingly, the integral processing value SDVoxs can quickly and accurately approach to the convergent value.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：即使当积分处理值与空燃比控制装置中的收敛值显着偏离时，即使发生干扰，为了精确地补偿进/排系统的误差，用于反馈控制空气 - 基于从布置在催化剂下游的空燃比传感器的输出值计算出的积分处理值的燃料比。 解决方案：当判断积分处理值SDVoxs与收敛值（SDVoxs1）的偏差大时，该装置将三维的积分处理值SDVoxs的变化速度设定为3级。 在步骤1中，将变化速度设定为大的值，并且在FC之后，通过丰富控制等的干扰使积分处理值SDVoxs倾斜，但是可以快速接近收敛值附近的值 一定的价值。 在步骤2中，将变化速度变为中等值，使得积分处理值SDVoxs可以进一步接近收敛值，同时抑制干扰的影响。 在步骤3中，将变化速度变更为较小的值，使得积分处理值SDVoxs可以稳定地转移到接近收敛值的值。 因此，积分处理值SDVoxs可以快速准确地接近收敛值。 版权所有（C）2009，JPO＆INPIT