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公开(公告)号：JP2009250125A
公开(公告)日：2009-10-29
申请号：JP2008099429
申请日：2008-04-07
Applicant: Toyota Industries Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社豊田自動織機
Inventor： HONJO NORITOSHI , YAMAMOTO YUKIHISA , TOYODA TADASHI , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To restrain fuel consumption, while preventing clogging in an adding nozzle.
SOLUTION: An adding pump 38 is connected to an adding nozzle 37 arranged on a cylinder head 15. The adding pump 38 supplies fuel to the adding nozzle 37. The adding nozzle 37 injects the supplied fuel into an exhaust port 32 of a cylinder 11. Operation of the adding pump 38 receives control of a control computer C. The control computer C estimates exhaust energy and a particulate matter discharge quantity, and specifies the injection timing for preventing the clogging based on a map Map1, the estimated exhaust energy and the estimated particulate matter discharge quantity.
COPYRIGHT: (C)2010,JPO&INPITAbstract translation: 要解决的问题：为了抑制燃料消耗，同时防止添加喷嘴中的堵塞。
解决方案：添加泵38连接到布置在气缸盖15上的添加喷嘴37.加料泵38向加料喷嘴37供应燃料。添加喷嘴37将供应的燃料喷射到排气口32的排气口32中。 加法泵38的操作接收控制计算机C的控制。控制计算机C估计排气能量和颗粒物排放量，并且基于地图Map1指定用于防止堵塞的喷射正时，估计的排气能量 和估计的颗粒物排放量。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2008196444A
公开(公告)日：2008-08-28
申请号：JP2007034752
申请日：2007-02-15
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： TAWARA ATSUSHI
IPC: F02M25/07
CPC classification number: Y02T10/121
Abstract: PROBLEM TO BE SOLVED: To provide an abnormality diagnosis device for an exhaust gas recirculation device capable of appropriately determining the abnormality of the exhaust gas recirculation device, provided on an internal combustion engine executing throttling control of an intake throttle valve and a flow control valve adjusting exhaust gas recirculation quantity during filter regeneration.
SOLUTION: The engine 1 is provided with the exhaust emission recirculation device comprising an EGR passage 13 establishing communication between an exhaust passage 26 and an intake passage 3, and an EGR valve 15 adjusting exhaust gas recirculation quantity. Throttling control reducing opening of the EGR valve and opening of the intake throttle valve 16 is executed if an engine operation state is in a predetermined state when regeneration control of a filter 32 provided in the exhaust passage 26 is executed. A control device 25 performs abnormality determination of an exhaust gas recirculation device based on change quantity of suction air quantity when the EGR valve 15 is forcibly driven. Execution of abnormal determination is prohibited until predetermined period of time elapses after suspension of the abnormality determination.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 解决问题的方案：提供一种排气再循环装置的异常诊断装置，其能够适当地确定在执行进气节气门的节流控制的内燃机和流量的排气再循环装置的异常 控制阀调节过滤器再生过程中的废气再循环量。 发动机1设置有排气排放再循环装置，其包括建立排气通道26和进气通道3之间的连通的EGR通道13和调节废气再循环量的EGR阀15。 如果在执行设置在排气通道26中的过滤器32的再生控制的情况下，如果发动机运转状态处于预定状态，则执行节流控制减少EGR阀的打开和进气节流阀16的打开。 控制装置25基于当EGR阀15被强制驱动时的吸入空气量的变化量，进行废气再循环装置的异常判定。 禁止异常判定的执行，直到异常判定暂停后经过规定的时间。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2007107474A
公开(公告)日：2007-04-26
申请号：JP2005300177
申请日：2005-10-14
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： HANDA HIDEYUKI , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine capable of inhibiting deterioration of fuel economy of the internal combustion engine due to wasteful PM regeneration control preceding execution of sulfur poisoning recovery control. SOLUTION: The exhaust emission control device terminates execution of PM regeneration control preceding execution of sulfur poisoning recovery control if PM accumulation amount in an exhaust system is less than predetermined value "a" which does not cause over temperature rise of NOx catalyst with accompanying execution of sulfur poisoning recovery control (S102, NO) at a time of request for execution of sulfur poisoning recovery, and executes PM recovery control preceding execution of sulfur poisoning recovery control only if PM accumulation amount is the predetermined value "a" or more (S102, YES). Consequently, deterioration of fuel economy of the internal combustion engine due to wasteful execution of PM recovery control under a state that there is no risk of over temperature rise of the NOx catalyst during execution of sulfur poisoning recovery control without PM recovery control with preceding execution of S poisoning recovery control can be inhibited. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 解决的问题：提供一种内燃机的废气排放控制装置，其能够在执行硫中毒恢复控制之前由于浪费的PM再生控制而抑制内燃机的燃料经济性的劣化。 解决方案：废气排放控制装置在排气系统中的PM累积量小于不会引起NOx催化剂过度升温的预定值“a”之前，终止执行硫中毒恢复控制之前的PM再生控制 在请求执行硫中毒恢复时伴随执行硫中毒恢复控制（S102，否），并且仅在PM累积量为预定值“a”或更多时执行硫中毒恢复控制之前的PM恢复控制 （S102，是）。 因此，在没有PM回收控制的硫中毒恢复控制的执行期间在没有NOx催化剂的过度升温的风险的状态下，由于浪费执行PM回收控制而导致的内燃机的燃料经济性的劣化， S中毒恢复控制可以被抑制。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2007040241A
公开(公告)日：2007-02-15
申请号：JP2005227047
申请日：2005-08-04
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： KANAZAWA SHOGO , SUGIYAMA TATSUMASA , KOBAYASHI NOBUKI , TAWARA ATSUSHI
IPC: F02D41/04 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/24 , F02D21/08 , F02D41/38 , F02D41/40 , F02D45/00 , F02M25/07
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine, capable of efficiently restoring the NOx storing capability of a NOx storage reduction catalyst. SOLUTION: The device comprises the NOx storage reduction catalyst 30 provided in an exhaust passage 22 of the internal combustion engine 10 which executes lean burn, and a fuel addition valve 26 provided in the exhaust passage 22 on the upstream side beyond the NOx storage reduction catalyst 30. The NOx storage reduction catalyst 30 occludes NOx in exhaust gas when the air-fuel ratio of exhaust gas flowing thereinto is lean, and reduces the NOx being occluded with the air-fuel ratio of the exhaust gas to be rich. By adding fuel to the exhaust gas with fuel injection from the fuel addition valve 26, the air-fuel ratio of the exhaust gas is temporarily changed to be rich to restore the NOx storing capability of the NOx storage reduction catalyst 30. Along with fuel addition by the fuel addition valve 26, post injection control or EGR amount increasing control is executed to change the combustion air-fuel ratio to be rich. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 解决的问题：提供能够有效地恢复NOx储存还原催化剂的NOx储存能力的用于内燃机的废气排放控制装置。 解决方案：该装置包括设置在执行稀薄燃烧的内燃机10的排气通道22中的NOx储存还原催化剂30以及设置在排气通道22中的上游侧超过NOx的燃料添加阀26 储存还原催化剂30时，在排出气体的空燃比变稀的情况下，NOx吸留还原催化剂30吸收废气中的NOx，并且使废气的空燃比浓缩而使NOx被吸留。 通过从燃料添加阀26向燃料喷射燃料，废气的空燃比暂时变为浓度，以恢复NOx储存还原催化剂30的NOx储存能力。伴随燃料添加 通过燃料添加阀26，执行后喷射控制或EGR量增加控制，以使燃烧空燃比变为浓。 版权所有（C）2007，JPO＆INPIT
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65.发明专利Controller and exhaust gas temperature estimating method for internal combustion engine 有权用于内燃机的控制器和排气温度估计方法
公开(公告)号：JP2006291828A
公开(公告)日：2006-10-26
申请号：JP2005112855
申请日：2005-04-08
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a controller and an exhaust gas temperature estimating method for an internal combustion engine capable of accurately estimating an exhaust gas temperature. SOLUTION: This controller for the internal combustion engine calculates the estimated value of a first exhaust gas temperature (exhaust gas temperature at an engine body 11) by using a rounded value set based on a fuel injection amount and an air suction amount, and the estimated value of a second exhaust gas temperature (exhaust gas temperature on the upstream side of an NOx catalytic converter 72) based on the estimated value of the first exhaust gas temperature. Furthermore, the controller determines whether it performs a temperature raising control treatment or not based on the catalyst floor temperature of the NOx catalytic converter 72 estimated through the estimated value of the second exhaust gas temperature in a PM regenerative control. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种能够精确地估计排气温度的内燃机的控制器和排气温度估计方法。 解决方案：该内燃机的控制器通过使用基于燃料喷射量和空气吸入量设定的舍入值来计算第一排气温度（发动机主体11的排气温度）的估计值， 和第二废气温度（NOx催化转化器72的上游侧的废气温度）的估计值，基于第一排气温度的推定值。 此外，控制器基于通过PM再生控制中的第二废气温度的推定值推定的NOx催化转化器72的催化剂底面温度，判定是否进行升温控制处理。 版权所有（C）2007，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2006291818A
公开(公告)日：2006-10-26
申请号：JP2005112835
申请日：2005-04-08
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To accurately remove particulates deposited around a catalyst positioned on the upstream-most side among catalysts installed in an exhaust system. SOLUTION: A burnup control in which a fuel is concentrically and intermittently added from an adding valve 46 and the stop of the addition of the fuel are repeated is performed at the end of a PM regenerative control to burn out PM remaining at the exhaust gas upstream side end of an NOx catalytic converter 25. A rest time B which is the stop time of the concentrated and intermittent addition of fuel in the burnup control is adjusted to be more increased as a final target floor temperature Tt is more lowered. When the engine is operated under such environmental conditions that an exhaust gas temperature is lowered in the burnup control, the final target floor temperature Tt is corrected to a lower side so that the rest time B can be increased. As a result, the length of the rest time B can be increased to a level necessary for removing unburned fuel components remaining on the catalyst by the flow of exhaust gases, and the deactivating phenomenon of the catalyst can be suppressed. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：为了精确地去除安装在排气系统中的催化剂中精确地去除位于最上游侧的催化剂上沉积的颗粒。 解决方案：在PM再生控制结束时执行其中重复从添加阀46同时并间歇地添加燃料并停止添加燃料的燃耗控制，以将剩余的PM 在NOx催化转化器25的废气上游侧端部，随着最终目标楼层温度Tt的降低，调整燃料控制中的燃料浓缩和间歇添加的停止时间的休息时间B. 当发动机在燃烧控制中排气温度降低的环境条件下运转时，将最终目标楼层温度Tt校正到较低侧，从而可以增加休息时间B. 结果，可以将休息时间B的长度增加到通过废气流除去残留在催化剂上的未燃燃料成分所需的水平，并且可以抑制催化剂的失活现象。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2006029239A
公开(公告)日：2006-02-02
申请号：JP2004210624
申请日：2004-07-16
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： TOMITA TETSUJI , SUGIYAMA TATSUMASA , TAWARA ATSUSHI
CPC classification number: F02D21/08 , F01N3/0253 , F01N11/002 , F01N2610/03 , F02B37/00 , F02D41/029 , F02D2200/0802 , F02M26/05 , F02M26/15 , F02M26/35
Abstract: PROBLEM TO BE SOLVED: To effectively prevent overheat of an exhaust emission control filter for an internal combustion engine. SOLUTION: Risk of over heat of the exhaust emission control filter is determined (S102) based on whether estimated maximum bed temperature estimated from a map based on intake air quantity reduction quantity and PM accumulation quantity exceeds over-heat determination temperature or not at a time of PM regeneration control process. If there is a risk of overheat (YES in S102), exhaust gas flow quantity increase process is performed by intake air quantity increase process by fully opening a throttle valve and fully closing an EGR valve (S104). In fuel injection quantity control process, exhaust gas flow quantity is secured by idling speed increase at a time of idling. Consequently, since heat generated in the exhaust emission control filter is positively transmitted and emitted to outside, overheat of the exhaust emission control filter can be effectively prevented. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：有效地防止用于内燃机的废气排放控制过滤器的过热。 解决方案：基于根据进气量减少量和PM累积量估计的从地图估计的最大床温是否超过过热确定温度来确定废气排放控制过滤器的过热风险（S102） 在PM再生控制过程中。 如果存在过热的风险（S102中为“是”），则通过全面打开节气门并完全关闭EGR阀，通过进气量增加处理进行废气流量增加处理（S104）。 在燃料喷射量控制处理中，在空转时通过空转速度增加来确保废气流量。 因此，由于在废气排放控制滤波器中产生的热被积极地传输并发射到外部，因此可以有效地防止废气排放控制滤波器的过热。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2005016394A
公开(公告)日：2005-01-20
申请号：JP2003181547
申请日：2003-06-25
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： KOBAYASHI NOBUKI , TSUZUKI MASAHITO , SUGIYAMA TATSUMASA , ISHIKAWA MASAHIKO , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide an emission control system for setting a temperature of an emission control means to a target temperature by adding a more appropriate fuel amount in consideration of an individual difference of an engine element of an internal combustion engine and an individual difference of the emission control means. SOLUTION: This emission control system of the internal combustion engine comprises: the emission control means arranged to an exhaust passage of the internal combustion engine and purifying an exhaust gas; a temperature estimating means for estimating the temperature of the emission control means; and an addition amount calculating means for calculating the fuel amount to be added to the exhaust gas in order to make the temperature of the emission control means to the target temperature based on the temperature of the emission control means estimated by the temperature estimating means. This emission control system further comprises a temperature correction means which calculates a reference temperature of the emission control means under a predetermined condition (S103), and corrects the temperature of the emission control means estimated by the temperature estimating means based on the reference temperature (S106). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种排放控制系统，其用于通过考虑到内燃机的发动机元件和发动机元件的个体差异添加更适当的燃料量来将排放控制装置的温度设定为目标温度 排放控制装置的个体差异。 解决方案：该内燃机的排放控制系统包括：排放控制装置，其布置在内燃机的排气通道上并净化废气; 用于估计排放控制装置的温度的温度估计装置; 以及添加量计算装置，用于基于由温度估计装置估计的排放控制装置的温度，计算添加到排气中的燃料量，以使排放控制装置的温度达到目标温度。 该排放控制系统还包括在预定条件下计算排放控制装置的参考温度的温度校正装置（S103），并且基于参考温度来校正由温度估计装置估计的排放控制装置的温度（S106 ）。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004324566A
公开(公告)日：2004-11-18
申请号：JP2003121660
申请日：2003-04-25
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： KOBAYASHI NOBUKI , TSUZUKI MASAHITO , SUGIYAMA TATSUMASA , ISHIKAWA MASAHIKO , TAWARA ATSUSHI
IPC: F02D45/00 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/24 , F01N3/28 , F01N11/00 , F02D41/04 , F02D41/14
CPC classification number: F02D41/1459 , B01D53/9431 , B01D53/9495 , F01N3/0842 , F01N3/085 , F01N3/0885 , F01N11/00 , F01N2240/36 , F01N2250/12 , F01N2260/04 , F01N2560/023 , F01N2560/025 , F01N2570/04 , F01N2570/14 , F01N2610/03 , F02B37/00 , F02D41/1454 , F02D41/1474 , F02D2200/0404 , F02D2200/0818 , F02D2200/602 , F02D2250/38 , Y02A50/2344 , Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To avoid the emission of a large amount of HC into the atmosphere when SOx occluded in a NOx catalyst is released by SOx poisoning recovery control, in an exhaust gas cleaning system of an internal combustion engine having a NOx catalyst for occluding and reducing NOx in exhaust gas.
SOLUTION: In the exhaust gas cleaning system of the internal combustion engine having the NOx catalyst for occluding and reducing NOx in the exhaust gas, the quantity of SOx occluded in the NOx catalyst is estimated when the SOx occluded in the NOx catalyst is released, and the air-fuel ratio of the exhaust gas flowing to the NOx catalyst is shifted to the rich side as the quantity of the SOx estimated decreases so as to lower the HC concentration of the exhaust gas flowing out of the NOx catalyst to a concentration not higher than a specified concentration.
COPYRIGHT: (C)2005,JPO&NCIPI-
公开(公告)号：JP2003172185A
公开(公告)日：2003-06-20
申请号：JP2001367977
申请日：2001-11-30
Applicant: TOYOTA MOTOR CORP
Inventor： OTSUBO YASUHIKO , MATSUOKA HIROKI , SUGIYAMA TATSUMASA , AOYAMA TARO , ITO TAKEKAZU , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a controller for an internal combustion engine capable of carrying out highly stable and precise control without influence of fluctuation or the like of operating conditions in regard to maintaining a temperature of an exhaust emission control catalyst at an optimal value. SOLUTION: An electronic control unit 80 carrying out overall control of an operating state of the engine 1 calculates and stores (learns) a numeric value corresponding to each operating condition and capable of providing an optimum temperature rising effect in regard to each of a post injection quantity and an additional fuel quantity by feeding back a detection signal of a first exhaust temperature sensor 74a or a second exhaust temperature sensor 74b. When concurrently executing post injection and fuel addition, the fuel addition is executed by accurately evaluating a temperature rising effect provided by the post injection (feedback control of the additional fuel quantity and learning of a correction amount following the control are carried out). COPYRIGHT: (C)2003,JPO
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