公开(公告)号：JP2014020220A

公开(公告)日：2014-02-03

申请号：JP2012156751

申请日：2012-07-12

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

Inventor： YAMAGUCHI YUJI ,  KATOU SENJI ,  NAKAGAWA NORIHISA ,  OKAZAKI SHUNTARO

IPC: F02D13/02 ,  F02D19/08 ,  F02D41/02 ,  F02D41/12

Abstract: PROBLEM TO BE SOLVED: To provide a control device of an internal combustion engine capable of improving deceleration feeling by expanding the combustion limit even when deceleration fuel cut is inhibited upon deceleration.SOLUTION: Deceleration fuel cut in which the fuel injection by means of a fuel injection valve is stopped upon deceleration of an internal combustion engine is executed. When fuel-cut inhibition conditions hold even upon the deceleration, the deceleration fuel cut is inhibited. When the deceleration fuel cut is inhibited, intake valve closure timing of the internal combustion engine is preset to the bottom dead center side from the intake valve closure timing when executing the deceleration fuel cut.

Abstract translation: 要解决的问题：提供一种内燃机的控制装置，即使在减速时禁止减速燃料切断时，也能够通过扩大燃烧极限来改善减速度的感觉。解决方案：通过燃料进行燃料喷射的减速燃料切断 执行内燃机减速时停止喷射阀。 即使减速时燃油切断禁止条件成立，也可以抑制减速燃料切断。 当禁止减速燃料切断时，执行减速燃料切断时，内燃机的进气门关闭正时从进气门关闭正时预先设定在下死点。

公开(公告)号：JP2010014073A

公开(公告)日：2010-01-21

申请号：JP2008176416

申请日：2008-07-07

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

Inventor： YOKOYAMA YASUNAO ,  NAKAGAWA NORIHISA

IPC: F02D13/02 ,  F02D45/00

CPC classification number: Y02T10/18

Abstract: PROBLEM TO BE SOLVED: To provide an abnormality determination apparatus capable of identifying a failure position with high precision when a trouble occurs in a system equipped with a variable working angle mechanism. SOLUTION: The abnormality determination apparatus includes: a control shaft; and an actuator for moving the control shaft. The abnormality determination apparatus also includes: a variable working angle mechanism which increases an working angle of a valve disposed at a cylinder of an internal combustion engine if the control shaft is moved in a prescribed direction and which decreases the working angle if the control shaft is moved in a direction opposite to the prescribed direction; a target value calculating means for calculating a target value of the working angle; an operation amount sensor for detecting an operation amount of the actuator; a position sensor for detecting a position of the control shaft; and a failure position identifying means for identifying a position in which a trouble occurs by comparing the target value, a value detected by the operation amount sensor, and a value detected by the position sensor. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够在配备有可变作用角机构的系统中发生故障时能够高精度地识别故障位置的异常判定装置。 解决方案：异常判定装置包括：控制轴; 以及用于移动控制轴的致动器。 异常判定装置还包括：可变作用角机构，其在控制轴沿规定方向移动时增大设置在内燃机的气缸上的阀的工作角度，并且如果控制轴为 沿与规定方向相反的方向移动; 目标值计算装置，用于计算工作角度的目标值; 用于检测致动器的操作量的操作量传感器; 用于检测控制轴的位置的位置传感器; 以及故障位置识别装置，用于通过比较目标值，由操作量传感器检测的值和由位置传感器检测的值来识别发生故障的位置。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010013955A

公开(公告)日：2010-01-21

申请号：JP2008172677

申请日：2008-07-01

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

Inventor： NAKAGAWA NORIHISA ,  YOSHIOKA MAMORU

IPC: F02D13/02 ,  F01L1/46 ,  F01L13/00 ,  F02D9/02 ,  F02D41/02 ,  F02D41/20 ,  F02D41/22 ,  F02D45/00

CPC classification number: Y02T10/18 ,  Y02T10/40

Abstract: PROBLEM TO BE SOLVED: To provide an abnormality determination device for a variable operating angle mechanism which can suppress the occurrence of knocking while detecting the abnormality of the variable operating angle mechanism with a high degree of accuracy.
SOLUTION: The abnormality determination device (70) for a variable operating angle mechanism includes a knocking determination means for determining in advance the likelihood of the occurrence of knocking when the moving speed of a control shaft (13) is switched to slow speed in comparison with the moving speed at a normal state on the basis of engine load, a moving speed switching means for switching the moving speed of the control shaft to slow speed when knocking is determined to be hard to occur, a learning means for executing learning process for updating referential operating angle taken as a reference of the abnormality determination of the variable operating angle mechanism (10) when the moving speed is switched, and an abnormality determination means for determining the presence and absence of the abnormality in the variable operating angle mechanism based on output of an OBD sensor (40), output of a control sensor (30) and referential operating angle after the update.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 解决的问题：提供一种能够以高精度检测可变动作角度机构的异常的同时抑制爆震发生的可变动作角机构的异常判定装置。 解决方案：用于可变操作角度机构的异常确定装置（70）包括：敲击判定装置，用于当控制轴（13）的移动速度切换到慢速时，预先确定发生爆震的可能性 与基于发动机负载的正常状态下的移动速度相比较，确定难以发生敲击时将控制轴的移动速度切换为慢速的移动速度切换装置，用于执行学习的学习装置 在切换移动速度时作为可变动作角度机构（10）的异常判定的基准的参考作业角度的更新处理，以及用于确定可变动作角度机构中是否存在异常的异常判定装置 基于OBD传感器（40）的输出，控制传感器（30）的输出和更新之后的参考操作角度。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009228498A

公开(公告)日：2009-10-08

申请号：JP2008072824

申请日：2008-03-21

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

Inventor： NAKAGAWA NORIHISA

IPC: F02D41/14 ,  F02D13/02 ,  F02D41/22

CPC classification number: Y02T10/18 ,  Y02T10/40

Abstract: PROBLEM TO BE SOLVED: To maintain an air-fuel ratio to the vicinity of a target air-fuel ratio even in case of abnormality in an action angle sensor, when a learning processing relating to an integral item of an air-fuel ratio feedback correction value is performed for every area of the action angle. SOLUTION: The air-fuel ratio control device of the internal combustion engine is equipped with a variable valve mechanism, and a suction amount of air is adjusted by the adjustment of the action angle of a suction valve. The operating range of the action angle is divided into two areas of a small area and a large area, and the learning values (LearnL, LearnS) relating to the integral item of the feedback correction value Vafsfb are individually set for every area. The learning value is individually renewed for the area (selection area) including the detection value of the action angle sensor. The learning value Learn for controlling used for calculating the feedback correction value Vafsfb is calculated by interpolating the LearnL, LearnS based on the detection value. In case of abnormality in the action angle sensor, energization to the variable valve mechanism is turned off, the action angle of the suction valve is fixed, and "the selection area" is fixed to the small area. The learning value Learn for controlling is calculated by interpolating the LearnL and LearnS, based on the minimum value Tmin of the action angle. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：即使在动作角度传感器发生异常的情况下，为了将空燃比维持在目标空燃比附近，当与空燃比的整体项目相关的学习处理 针对动作角度的每个区域执行比率反馈校正值。 解决方案：内燃机的空燃比控制装置配备有可变气门机构，并且通过调节吸入阀的动作角度来调节吸入空气量。 动作角度的操作范围分为小面积和大面积的两个区域，并且针对每个区域分别设置与反馈校正值Vafsfb的积分项有关的学习值（LearnL，LearnS）。 对于包括动作角度传感器的检测值的区域（选择区域），学习值被单独更新。 学习值学习用于计算反馈校正值的控制Vafsfb是通过根据检测值插值LearnL，LearnS来计算的。 在动作角传感器发生异常的情况下，可变气门机构的通电被切断，吸入阀的动作角度固定，“选择区域”固定在小区域。 学习值学习控制是通过根据动作角度的最小值Tmin内插LearnL和LearnS来计算的。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009197767A

公开(公告)日：2009-09-03

申请号：JP2008043515

申请日：2008-02-25

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

Inventor： NAKAGAWA NORIHISA ,  MIZOGUCHI HIROAKI

IPC: F02D45/00 ,  F01L13/00 ,  F02D41/22

CPC classification number: Y02T10/40

Abstract: PROBLEM TO BE SOLVED: To provide an abnormality determination device for a variable operating angle mechanism, detecting the abnormality of the variable operating angle mechanism of an internal combustion engine with a high degree of accuracy.
SOLUTION: This abnormality determination device for the variable operating angle mechanism includes the variable operating angle mechanism 12, a control shaft 14, and an actuator moving the control shaft 14. The variable operating angle mechanism 12 enlarges the operating angle of an intake valve 10 arranged in the cylinder of the internal combustion engine when the control shaft 14 is moved in the predetermined direction, and reduces the operating angle of the intake valve 10 when the control shaft 14 is moved in the direction opposite to the predetermined direction. A rotation sensor 26 detects rotation of the actuator. A position sensor 28 detects the position of the control shaft 14. An ECU 50 acquires a leaning value based on a relative relation between output of the rotation sensor 26 and output of the position sensor 28.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 解决的问题：为了提供可变动作角度机构的异常判定装置，以高精度检测内燃机的可变动作角度机构的异常。 解决方案：用于可变操作角度机构的该异常判定装置包括可变动作角度机构12，控制轴14和使控制轴14移动的致动器。可变动作角度机构12扩大摄像机的操作角度 当控制轴14沿预定方向移动时，设置在内燃机的气缸中的阀10，并且当控制轴14沿与预定方向相反的方向移动时，减小了进气门10的操作角度。 旋转传感器26检测致动器的旋转。 位置传感器28检测控制轴14的位置。ECU50基于旋转传感器26的输出与位置传感器28的输出之间的相对关系来获取倾斜值。（C）2009， JPO和INPIT

公开(公告)号：JP2009138701A

公开(公告)日：2009-06-25

申请号：JP2007318582

申请日：2007-12-10

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

Inventor： MIZOGUCHI HIROAKI ,  NAKAGAWA NORIHISA

IPC: F02D13/02 ,  F01N3/20 ,  F01N3/24 ,  F02D41/10 ,  F02D45/00

CPC classification number: Y02T10/18

Abstract: PROBLEM TO BE SOLVED: To provide a control device for an internal combustion engine provided with a catalyst having capability to store oxygen arranged in an exhaust passage, appropriately determining the capability of the catalyst to store oxygen while suppressing deterioration of fuel consumption. SOLUTION: This control device for the internal combustion includes the internal combustion engine 10 having a plurality of cylinders, the catalyst 32 arranged in the exhaust passage 22 of the internal combustion engine 10 and having the capability to store oxygen, and a variable valve train 30 for variably setting the operating angle of a valve. When measuring the capability of the catalyst 32 to store oxygen, it is determined (step S204) whether or not a target operating angle is smaller than a lower limit of the operating angle with no variations in an air-fuel ratio between the cylinders. When the target operating angle is smaller than the lower limit, the target operating angle is varied to the lower limit (step S206). Preferably, after the actual operating angle is varied to the lower limit, measurement of the capability of the catalyst 32 to store oxygen is started (step S210). COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种内燃机的控制装置，该内燃机具有能够存储布置在排气通道中的氧气的催化剂，适当确定催化剂储存氧气的能力，同时抑制燃料消耗的劣化。 解决方案：用于内燃的该控制装置包括具有多个气缸的内燃机10，设置在内燃机10的排气通道22中并且具有存储氧能力的催化剂32， 用于可变地设定阀的操作角度的气门机构30。 当测量催化剂32存储氧气的能力时，确定（步骤S204）目标操作角度是否小于操作角度的下限，而气缸之间的空燃比没有变化。 当目标操作角度小于下限时，目标操作角度变为下限（步骤S206）。 优选地，在实际操作角度变化到下限之后，开始催化剂32存储氧的能力的测量（步骤S210）。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008180127A

公开(公告)日：2008-08-07

申请号：JP2007013670

申请日：2007-01-24

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

Inventor： WATANABE NAOHISA ,  NAKAGAWA NORIHISA ,  HAGIMOTO TAIGA ,  ISHII MAKOTO

IPC: F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F02D45/00

Abstract: PROBLEM TO BE SOLVED: To avoid an adverse effect due to exhaust pulsation on an air-fuel ratio sensor disposed immediately before a catalyst upstream of an exhaust passage by assembling a surge tank in the middle of an exhaust bypass passage. SOLUTION: This exhaust emission control device is equipped with: a first catalyst 32 assembled in the middle of the exhaust passage 30 for cleaning exhaust gas flowing in the exhaust passage 30; a second catalyst 33 assembled further downstream of the exhaust passage 30 than the first catalyst 32 for cleaning the exhaust gas flowing in the exhaust passage 30; the exhaust bypass passage 37 with one end communicated with the exhaust passage 30 at further upstream than the first catalyst 32 and the other end communicated with the exhaust bypass passage 37 communicated with the exhaust passage 30 between the first catalyst 32 and the second catalyst 33; and the surge tank 38 assembled in the middle of the exhaust bypass passage 37. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了避免由于在排气通道的中间组装缓冲罐而在排气通道上游紧邻催化剂的空燃比传感器之间由于排气脉动引起的不利影响。 解决方案：该废气排放控制装置配备有：在排气通道30的中间组装的用于清洁在排气通道30中流动的废气的第一催化剂32; 第二催化剂33，其组装在排气通道30的下游，而不是第一催化剂32，用于清洁在排气通道30中流动的废气; 排气旁路通道37的一端在第一催化剂32的上游侧与排气通路30连通，另一端与第一催化剂32和第二催化剂33之间与排气通路30连通的排气旁路通路37连通， 以及组装在排气旁通通道37的中间的缓冲箱38.版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007239698A

公开(公告)日：2007-09-20

申请号：JP2006066101

申请日：2006-03-10

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

Inventor： FUJIWARA TAKAHIKO ,  NAKAGAWA NORIHISA ,  HAGIMOTO TAIGA ,  KAKO JUNICHI ,  KATO NAOTO ,  OKAZAKI SHUNTARO

IPC: F02D41/14 ,  F01N3/20 ,  F01N3/24 ,  F02D41/34

Abstract: PROBLEM TO BE SOLVED: To provide an air-fuel ratio control device for an internal combustion engine for suppressing the side effects of forcible vibration while maintaining high purifying capability of an exhaust emission control catalyst with the forcible vibration of the air-fuel ratio of mixture. SOLUTION: Forcible vibration is given to the air-fuel ratio of mixture only when a system required air-fuel ratio abyfst is richer than a stoichiometric one. In this case, the amplitude of the forcible vibration is preferably in a range of 0.1-0.5 on either rich and lean side, and the cycle of the forcible vibration is preferably in a range of 0.5-2 sec. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于抑制强制振动的副作用的内燃机的空燃比控制装置，同时保持废气排放控制催化剂的高空气燃料的强制振动的高净化能力 混合比。

解决方案：只有当系统所需的空燃比abyfst比化学计量比更丰富时，才能将混合物的空燃比强制振动。 在这种情况下，强磁振动的振幅优选在富磁侧和弱侧为0.1-0.5的范围，强制振动的周期优选在0.5〜2秒的范围内。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007177759A

公开(公告)日：2007-07-12

申请号：JP2005379314

申请日：2005-12-28

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

Inventor： NAKAGAWA NORIHISA

IPC: F02D41/12 ,  F01N3/24 ,  F02D17/02 ,  F02D41/34 ,  F02D45/00

CPC classification number: Y02A50/2322 ,  Y02T10/44

Abstract: PROBLEM TO BE SOLVED: To control optimally asynchronous injection quantity in a system where asynchronous injection is executed immediately after fuel cut. SOLUTION: The internal combustion engine controller is equipped with an emission cleaning catalyst 42 arranged in an emission pathway 14 of an internal combustion engine 10, an O 2 sensor 48 arranged at a downstream side of the emission cleaning catalyst 42 to detect oxygen concentration within an emission, a fuel cut driving means that stops fuel supply to the internal combustion engine 10 when a vehicle decelerates to perform fuel cut driving, an asynchronous fuel injection means that performs asynchronous fuel injection when having returned from the fuel cut driving to normal driving, and a control means that controls the fuel injection quantity brought about by the asynchronous fuel injection depending on a period of time taken for a detected value by the O 2 sensor 48 to invert from a fuel-lean state to a fuel-rich state after the completion of the fuel cutoff driving. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：在燃油切断后立即执行异步喷射的系统中控制最佳异步喷射量。 解决方案：内燃机控制器配备有排放清洁催化剂42，该排放清洁催化剂42布置在内燃机10的排放路径14中，配置在内燃机10的下游侧的O 2 < 用于检测排放物中的氧浓度的排出清洗催化剂42，当车辆减速以进行燃料切断驱动时停止对内燃机10的燃料供给的燃料切断驱动装置，在返回时进行异步燃料喷射的异步燃料喷射装置 从燃料切断驱动到正常行驶，以及控制装置，其控制由异步燃料喷射引起的燃料喷射量，这取决于由O 2传感器48检测到的值所花费的时间 在燃料切断驱动完成之后从燃料贫乏状态转变为富燃状态。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006307784A

公开(公告)日：2006-11-09

申请号：JP2005133348

申请日：2005-04-28

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

Inventor： NISHIGORI TAKASHI ,  YOSHIOKA MAMORU ,  NAKAGAWA NORIHISA

IPC: F02D41/10 ,  F02D9/02 ,  F02D13/02 ,  F02D21/08 ,  F02D41/12 ,  F02D43/00 ,  F02M25/07

CPC classification number: Y02T10/18

Abstract: PROBLEM TO BE SOLVED: To provide a control device for an internal combustion engine, accurately controlling an air fuel ratio to a target value at the time of returning from fuel cut in deceleration, regardless of a state of exhaust gas recirculation quantity at the time of such returning, in the internal combustion engine for performing quantity increase control of the exhaust gas recirculation quantity during fuel cut in deceleration.
SOLUTION: During execution of fuel cut in deceleration, quantity increase control of EGR gas is performed by changing a valve overlap period. When valve overlap quantity at the time of returning from the fuel cut is below a predetermined determination value X, intake asynchronous injection is selected (injection end time 60° BTDC). In contrast, when the valve overlap quantity at the time of the returning exceeds the predetermined determination value X, intake synchronous injection is selected (injection end time 30° ATDC).
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种用于内燃机的控制装置，在与减速时切断的燃料返回时将空燃比精确地控制为目标值，而不管废气再循环量的状态如何 这种返回的时间在内燃机中，用于在减速时燃料切断期间进行排气再循环量的增加控制。

解决方案：在执行减速期间的燃料切断时，通过改变阀重叠周期来执行EGR气体的数量增加控制。 当从燃料切断返回时的阀重叠量低于预定判定值X时，选择进气异步喷射（喷射结束时间60°BTDC）。 相反，当返回时的阀重叠量超过预定判定值X时，选择进气同步喷射（喷射结束时间30°ATDC）。 版权所有（C）2007，JPO＆INPIT