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公开(公告)号：JP2014234751A
公开(公告)日：2014-12-15
申请号：JP2013115874
申请日：2013-05-31
Applicant: トヨタ自動車株式会社 , Toyota Motor Corp
Inventor： URANO SHIGEYUKI , SUZUKI YUSUKE , SAKAYANAGI YOSHIHIRO , FURUISHI AKIO , SAWADA YUTAKA
IPC: F02D45/00
Abstract: 【課題】この発明は、内燃機関の制御装置に関し、着火始動時であっても筒内圧センサを用いて取得される筒内圧情報を用いて筒内の発熱量を精度良く算出することを目的とする。【解決手段】着火始動を行う内燃機関10において、着火始動が行われる場合に筒内圧センサ30を用いて検出される筒内圧の時系列データを取得する。取得した筒内圧の時系列データを用いて、熱力学の第1法則に基づく筒内圧および筒内体積の関数に従って筒内の発熱量Qを算出する。当該発熱量Qは、燃焼中の筒内体積の変化量をゼロとしつつ、筒内圧の時系列データの中から抽出した最大筒内圧値と燃焼開始前の筒内圧値とに基づいて算出される。【選択図】図4
Abstract translation: 要解决的问题：通过使用与内燃机的控制装置有关的即使在开始点火时使用缸内压力传感器获得的缸内压力信息来精确地计算气缸中的热能。解决方案 在进行点火开始的内燃机10中，获取在点火开始时使用缸内压力传感器30检测的时间序列数据。 通过使用获取的缸内压力的时间序列数据，基于热力学第一原理，在缸内压力和缸内容积之后计算气缸中的热能Q。 基于从缸内压力的时间序列数据和燃烧开始前的缸内压力值提取的最大缸内压力值来计算发热量Q，同时保持内燃机的变化量， 汽缸体积在燃烧零点。
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公开(公告)号：JP2014118834A
公开(公告)日：2014-06-30
申请号：JP2012272532
申请日：2012-12-13
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： FURUISHI AKIO , SAWADA YUTAKA , SUZUKI YUSUKE
IPC: F02D45/00
Abstract: PROBLEM TO BE SOLVED: To favorably improve the accuracy of misfire determination using calorific energy which is calculated on the basis of in-cylinder pressure detected by an in-cylinder sensor, related to a misfire determination device of an internal combustion engine.SOLUTION: The misfire determination device of the internal combustion engine comprises an in-cylinder sensor 30 for detecting the in-cylinder pressure P. An inclination (change amount) of the calorific energy Q in a cylinder within a period of a prescribed crank angle is calculated a plurality of times within one cycle by using a detection value of the in-cylinder pressure sensor 30, and related to the maximum value and the minimum value of the plurality of inclinations of the calorific energy Q which are calculated within one cycle, when a difference s1 between the maximum value and the minimum value becomes not larger than a threshold s, and an absolute value of a ratio h1 of the maximum value with respect to the minimum value becomes not larger than a threshold h, it is determined that the misfire has occurred within a cycle of this time.
Abstract translation: 要解决的问题：利用与内燃机的失火判定装置有关的由缸内传感器检测到的缸内压力计算出的发热量来有利地提高失火判定的精度。解决方案： 内燃机的失火判定装置包括用于检测缸内压力P的缸内传感器30.计算出在规定曲柄角度的期间内的气缸内的发热量Q的倾斜（变化量） 通过使用缸内压力传感器30的检测值，并且与在一个周期内计算的多个热量Q的倾斜度的最大值和最小值相关联的时间在一个周期内，当差s1 在最大值和最小值之间变得不大于阈值s，并且相对于迷你的最大值的比率h1的绝对值 妈妈值不大于阈值h，则确定在该时间的循环内发生失火。
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公开(公告)号：JP2014077413A
公开(公告)日：2014-05-01
申请号：JP2012226260
申请日：2012-10-11
Applicant: Fujitsu Ten Ltd , 富士通テン株式会社 , Toyota Motor Corp , トヨタ自動車株式会社
Inventor： SHIBAYAMA MASASHI , WATANABE MASATOSHI , SUZUKI YUSUKE , SAWADA YUTAKA
IPC: F02D45/00
CPC classification number: G01M15/02 , F02D35/023 , F02D41/222 , F02D41/28 , F02D2041/281 , G01M15/042 , Y02T10/40
Abstract: PROBLEM TO BE SOLVED: To provide a control device and a control method for an engine that can accurately detect stack abnormality of a sensor.SOLUTION: There is provided an engine control device which controls an engine and includes a stack detection part, a count processing part, a stack value storage control part, and an abnormality determination part. The abnormality determination part determines that a sensor is in a stack abnormal state when a count value obtained by the count processing part becomes equal to or larger than an abnormality determination threshold. When a maximum value of a detection value of the sensor detected in a determination period is less than a value stored in the stack value storage part and when the stack detection part does not detect a stack state in the determination period, the count processing part neither makes a counter count up nor resets the counter.
Abstract translation: 要解决的问题：提供一种能够精确地检测传感器的堆叠异常的发动机的控制装置和控制方法。解决方案：提供一种控制发动机的发动机控制装置，其包括堆检测部，计数处理 部分，堆积值存储控制部分和异常确定部分。 当由计数处理部分获得的计数值变得等于或大于异常判定阈值时，异常确定部确定传感器处于堆叠异常状态。 当在确定期间检测到的传感器的检测值的最大值小于存储在堆栈值存储部分中的值时，并且当堆栈检测部分在确定期间内未检测到堆栈状态时，计数处理部件既不 使计数器计数或重置计数器。
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公开(公告)号：JP2013024074A
公开(公告)日：2013-02-04
申请号：JP2011157784
申请日：2011-07-19
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： SAITO HIROTAKA , KIDOKORO TORU , SAWADA YUTAKA , NAKAMURA YOSHITAKA
Abstract: PROBLEM TO BE SOLVED: To quickly and correctly perform deterioration determination of a storage reduction type NOx catalyst.SOLUTION: This catalyst deterioration determination system includes a determination device. The determination device performs first reduction agent supply in which reduction agent is supplied from a supply device while a control device controls an amount of reduction agent to make an air-fuel ratio of exhaust be a rich air-fuel ratio, and then performs second reduction agent supply in which the reduction agent is supplied from the supply device while the control device controls the amount of reduction agent to make the air-fuel ratio of the exhaust be the rich air-fuel ratio. When a detection value of an NHdetection device in the second reduction agent supply is less than a threshold value, the determination device determines that the NOx catalyst is deteriorated. When the detection value is the threshold value or more, the determination device determines that the NOx catalyst is normal.
Abstract translation: 要解决的问题：快速且正确地进行存储还原型NOx催化剂的劣化判定。 解决方案：该催化剂劣化判定系统包括确定装置。 确定装置执行第一还原剂供应，其中从供给装置供给还原剂，同时控制装置控制还原剂的量使排气的空燃比为浓空燃比，然后进行第二还原 在控制装置控制还原剂的量使排气的空燃比为浓空燃比的同时从供给装置供给还原剂的试剂供给。 当第二还原剂供应中的NH
3 检测装置的检测值小于阈值时，判定装置判定NOx催化剂劣化。 当检测值为阈值以上时，判定装置判定NOx催化剂正常。 版权所有（C）2013，JPO＆INPIT -
公开(公告)号：JP2012159438A
公开(公告)日：2012-08-23
申请号：JP2011020170
申请日：2011-02-01
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： SHIBATA DAISUKE , KIDOKORO TORU , SAWADA YUTAKA
Abstract: PROBLEM TO BE SOLVED: To detect a failure of a PM sensor more appropriately, including a clogged element cover or a sensor element excessively heated by a heater.SOLUTION: The apparatus for detecting a failure of a PM sensor includes element temperature detecting means detecting a surface temperature of a sensor element of the PM sensor, and calculates surface temperature decrease per unit time of the sensor element that decreases when exhaust passes around the sensor element on the basis of a value detected by the element temperature detecting means. A failure of the PM sensor is detected on the basis of a ratio of the surface temperature decrease per unit time of the sensor element to a flow rate of the exhaust passing around the PM sensor when the heater heats the sensor element.
Abstract translation: 要解决的问题：更适当地检测PM传感器的故障，包括堵塞的元件盖或由加热器过度加热的传感器元件。 解决方案：用于检测PM传感器故障的装置包括检测PM传感器的传感器元件的表面温度的元件温度检测装置，并且计算当排气通过时减小的传感器元件的每单位时间的表面温度降低 基于由元件温度检测装置检测的值围绕传感器元件。 基于当加热器加热传感器元件时，传感器元件的每单位时间的表面温度降低与通过PM传感器周围的排气的流量的比率被检测到PM传感器的故障。 版权所有（C）2012，JPO＆INPIT
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Patent Agency Ranking6.发明专利
公开(公告)号：JP2012112318A
公开(公告)日：2012-06-14
申请号：JP2010262343
申请日：2010-11-25
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： SHIBATA DAISUKE , KIDOKORO TORU , SAWADA YUTAKA
Abstract: PROBLEM TO BE SOLVED: To more accurately detect the deterioration of a catalyst, even when a temperature of the catalyst decreases, when supplying fuel to the catalyst.SOLUTION: A device for detecting the deterioration of the catalyst of an internal combustion engine detects the deterioration of the catalyst with an oxidation function provided in an exhaust passage of the internal combustion engine. The device includes: a fuel supply means for supplying fuel to the catalyst; a fuel amount acquisition means for acquiring the amount of fuel supplied to the catalyst; a temperature acquisition means for acquiring a temperature of the catalyst; an oxygen acquisition means for acquiring the amount of oxygen flowing in the catalyst; and a determination means for determining that the catalyst is deteriorated when a value, which is obtained by dividing the amount of fuel acquired by the fuel amount acquisition means when the temperature acquired by the temperature acquisition means in the period from which fuel is supplied to the catalyst becomes the highest by the amount of oxygen acquired by the oxygen acquisition means, is below a predetermined value.
Abstract translation: 要解决的问题：为了更精确地检测催化剂的劣化，即使当催化剂的温度降低时，当向催化剂供应燃料时。 解决方案：一种用于检测内燃机的催化剂劣化的装置，检测在内燃机的排气通道中具有氧化功能的催化剂的劣化。 该装置包括：用于向催化剂供应燃料的燃料供给装置; 燃料量获取装置，用于获取供给到催化剂的燃料量; 用于获取催化剂的温度的温度获取装置; 用于获取在所述催化剂中流动的氧气量的氧气获取装置; 以及确定装置，用于当通过将由燃料量获取装置获取的燃料量除以在由燃料被供给的时间段内由温度获取装置获取的温度除以获得的值时，确定催化剂劣化的确定装置 催化剂通过氧气获取装置获取的氧气的量变得最高，低于预定值。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2012013058A
公开(公告)日：2012-01-19
申请号：JP2010153181
申请日：2010-07-05
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： SAWADA YUTAKA , SHIBATA DAISUKE , TAKAOKA KAZUYA
Abstract: PROBLEM TO BE SOLVED: To provide a technique for detecting a failure of a PM sensor provided in an exhaust passage of an internal combustion engine.SOLUTION: An outflow PM quantity that is a PM quantity in an exhaust flowing out from a filter is detected by the PM sensor provided on a downstream side from the filter in the exhaust passage of the internal combustion engine. During the suspension of forced regeneration processing, the PM collection rate of the filter is continuously calculated based on an inflow PM quantity that is a PM quantity in an exhaust flowing in the filter and the outflow PM quantity detected by the PM sensor. It is determined that the failure occurs in the PM sensor when the calculated PM collection rate sticks to 100%.
Abstract translation: 要解决的问题：提供一种用于检测设置在内燃机的排气通道中的PM传感器的故障的技术。 解决方案：通过设置在内燃机的排气通道中的过滤器的下游侧的PM传感器来检测作为从过滤器流出的废气中的PM量的流出PM量。 在强制再生处理的停止期间，基于作为在过滤器中流动的排气中的PM量的流入PM量和由PM传感器检测到的流出PM量，连续计算过滤器的PM收集率。 当PM收集率达到100％时，确定PM传感器发生故障。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2011231732A
公开(公告)日：2011-11-17
申请号：JP2010104976
申请日：2010-04-30
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： TAHIRA SHINYA , NAKAMURA YOSHITAKA , KIDOKORO TORU , SAWADA YUTAKA
CPC classification number: Y02T10/121 , Y02T10/144
Abstract: PROBLEM TO BE SOLVED: To specify the position of a hole made in an inlet passage in an EGR system provided with a high pressure EGR device and a low pressure EGR device.SOLUTION: An apparatus for detection of abnormality in EGR system includes: a detector for detecting the amount of air flowing through an inlet passage with the detection position set in an upper stream side than a position where a low-pressure EGR passage is connected; and a calculator for calculating the target value. The position of the hole made in the inlet passage is determined based on the difference between the air amount detected when only a high-pressure EGP gas is fed and the air amount detected when only a low-pressure EGP gas is fed, and the difference between the air amount detected when only either of a high-pressure gas or a low-pressure gas is fed and the target value.
Abstract translation: 要解决的问题：指定在具有高压EGR装置和低压EGR装置的EGR系统中在入口通道中形成的孔的位置。 解决方案：一种用于检测EGR系统中的异常的装置，包括：检测器，用于检测流过入口通道的空气量，其中检测位置设定在上流侧，低于低压EGR通道的位置 连接的; 以及用于计算目标值的计算器。 基于当仅供给高压EGP气体时检测到的空气量与仅供给低压EGP气体时检测到的空气量之间的差异，确定在入口通道中形成的孔的位置， 在仅供给高压气体或低压气体中的任何一个时检测到的空气量与目标值之间。 版权所有（C）2012，JPO＆INPIT
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9.发明专利
公开(公告)号：JP2011220142A
公开(公告)日：2011-11-04
申请号：JP2010087665
申请日：2010-04-06
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： HAGIMOTO TAIGA , SAWADA YUTAKA
CPC classification number: Y02T10/24
Abstract: PROBLEM TO BE SOLVED: To enhance accuracy of deterioration determination of a catalyst when a temperature of the catalyst varies.SOLUTION: A catalyst deterioration determination device for internal combustion engine includes: a purification rate calculator for calculating a purification rate of NOx on the basis of NOx concentration on upstream and downstream sides of a NOx catalyst; a purification rate corrector for correcting the purification rate to a value in a predetermined normal state, assuming that a proportion of an amount of ammonia which the NOx catalyst adsorbs to an amount of ammonia which the NOx catalyst can adsorb at a maximum is a determined value; and a determiner for determining the deterioration determination of a selective reduction NOx catalyst on the basis of the purification rate after corrected by the purification rate corrector during reduction of the temperature of the NOx catalyst.
Abstract translation: 要解决的问题：为了提高催化剂的温度变化时催化剂的劣化测定的准确性。 解决方案：一种用于内燃机的催化剂劣化确定装置，包括：净化速率计算器，用于基于NOx催化剂的上游和下游侧的NOx浓度计算NOx的净化率; 净化率校正器，用于将净化率校正为预定正常状态的值，假设NOx催化剂吸附的氨的量与NOx催化剂可吸附的氨的量的比例为最大值为确定值 ; 以及确定器，用于基于在降低NOx催化剂的温度期间由净化速率校正器校正的净化率来确定选择还原型NOx催化剂的劣化判定。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2011185095A
公开(公告)日：2011-09-22
申请号：JP2010048048
申请日：2010-03-04
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： SHIBATA DAISUKE , KIDOKORO TORU , SAWADA YUTAKA , TAKAOKA KAZUYA
IPC: F01N3/02
CPC classification number: Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To avoid an erroneous diagnosis when the property of fuel changes through supply of fuel oil, in a system of diagnosing a failure of a particulate filter arranged in an exhaust passage of an internal combustion engine.
SOLUTION: This exhaust emission control system for an internal combustion engine includes: the particulate filter arranged in the exhaust passage of the internal combustion engine; and a PM sensor arranged downstream of the particulate filter in the exhaust passage. When a detection value of the PM sensor, after supplying the fuel, satisfies failure conditions of the particulate filter, a change in the property of the fuel is detected based on a detection value of the PM sensor when the first PM regenerating processing after supplying the fuel is completed and a detection value of the PM sensor when the PM regenerating processing before supplying the fuel is completed, and a diagnosis whether the particulate filter is failed or not is done in response to a result of the detection.
COPYRIGHT: (C)2011,JPO&INPITAbstract translation: 要解决的问题：为了避免当燃料的性质通过燃料油的供给而变化的错误诊断时，在诊断布置在内燃机的排气通道中的微粒过滤器的故障的系统中。 解决方案：用于内燃机的排气排放控制系统包括：布置在内燃机的排气通道中的颗粒过滤器; 以及布置在排气通道中的微粒过滤器下游的PM传感器。 当PM传感器的检测值在供给燃料之后，满足微粒过滤器的故障条件时，当供给第一PM再生处理之后，基于PM传感器的检测值来检测燃料特性的变化 在燃料供给完成之前，完成PM再生处理后的PM传感器的检测值，根据检测结果进行微粒过滤器的故障诊断。 版权所有（C）2011，JPO＆INPIT
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