公开(公告)号：JPS63176644A

公开(公告)日：1988-07-20

申请号：JP812487

申请日：1987-01-19

Applicant: TOYOTA MOTOR CORP

Inventor： TAKIMOTO TOSHIYUKI ,  MATSUSHITA SOICHI

IPC: F02D41/14 ,  F02D41/00

Abstract: PURPOSE:To control the air-fuel ratio with high precision within a set range by controlling a fuel feed quantity according to the deviation between an aimed torque and actual torque and the torque variation. CONSTITUTION:The signals supplied from a pressure sensor 38 installed onto a cylinder head 18, air flow sensor 34, etc. are input into a control unit 50, and the output torque is calculated from a cylinder internal pressure signal. The fundamental fuel injection quantity calculated on the basis of the revolution speed, intake air quantity, etc. is corrected according to the detected torque. Further, the torque variation quantity is calculated, and the fuel injection quantity is corrected according to the torque variation quantity. Therefore, independently of the variation factors such as the between-individual variation and the variation through the lapse of time, air-fuel ratio can be controlled within a set range.

公开(公告)号：JPS63129151A

公开(公告)日：1988-06-01

申请号：JP27092386

申请日：1986-11-15

Applicant: TOYOTA MOTOR CORP

Inventor： MATSUSHITA SOICHI ,  TAKIMOTO TOSHIYUKI

IPC: F02D45/00

Abstract: PURPOSE:To accurately detect a displaced degree of a crank angle, by equipping an engine with a means, which discriminates a peak of compression pressure in the time of a fuel cut, and a means which calculates the displaced degree of the crank angle, detected by a crank angle detector, from the peak. CONSTITUTION:In the time of a fuel cut, the displacement of a crank angle is known by measuring a difference of pressure between symmetrical positions interposing the top dead center. In the past, a detection value of the crank angle was corrected in the time of a deceleration fuel cut time, but an engine, which generates a high engine speed further fully closes a throttle valve in the time of deceleration, small decreases an intake amount of air and a pressure in a combustion chamber, and a problem has been provided that no good detection accuracy is obtained. Hereupon, cranking or the like, where the intake amount of air increases, is detected, and the detection value of the crank angle is corrected to be calculated by forcedly performing the fuel cut. Consequently, a displaced degree of the crank angle can be high accurately detected.

公开(公告)号：JP2008002347A

公开(公告)日：2008-01-10

申请号：JP2006172298

申请日：2006-06-22

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

Inventor： NAKAYAMA SHIGEKI ,  MATSUSHITA SOICHI ,  NAGAE MASAHIRO ,  MURATA HIROKI ,  SHIMIZU HAJIME ,  ONISHI TOMOMI ,  OKI HISASHI ,  MATSUMOTO ISAO

IPC: F02D21/08 ,  F02M25/07

CPC classification number: F02D41/1488 ,  F02B29/0406 ,  F02D41/0072 ,  F02D41/144 ,  F02D41/187 ,  F02D41/2438 ,  F02D41/2451 ,  F02D41/2464 ,  F02D2200/0414 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/38 ,  F02M26/47 ,  F02M26/60 ,  F02M2026/003 ,  F02M2026/004 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To provide a technique for correcting variation in mixing ratio of an EGR gas amount passing through a low-pressure EGR passage and a high-pressure EGR passage, in an exhaust recirculation device for an internal combustion engine. SOLUTION: The exhaust gas recirculation device for an internal comprises: a turbocharger; the low-pressure EGR passage; the high-pressure EGR passage; and an airflow meter. A high-pressure EGR gas amount is feedback-controlled depending on fresh air amounts, and open-loop control of a low-pressure EGR gas amount is performed based on an operational status of the internal combustion engine. Opening of each equipment and the fresh air amount are set to be reference values, and based on a measured fresh air amount at the time, a relation between the low-pressure EGR gas amount and the opening of the equipment which can adjust it is learned and corrected. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于校正通过低压EGR通路和高压EGR通路的EGR气体量在内燃机的排气再循环装置中的混合比的变化的技术。 解决方案：用于内部的废气再循环装置包括：涡轮增压器; 低压EGR通道; 高压EGR通道; 和气流计。 高压EGR气体量根据新鲜空气量反馈控制，并且基于内燃机的运行状态进行低压EGR气体量的开环控制。 将每个设备的开启量和新鲜空气量设定为参考值，并且基于此时测量的新鲜空气量，学习低压EGR气体量与能够调节的设备的打开之间的关系 并纠正。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2006152870A

公开(公告)日：2006-06-15

申请号：JP2004342390

申请日：2004-11-26

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

Inventor： OBA TAKAHIRO ,  MATSUSHITA SOICHI ,  HASHIZUME TAKESHI

IPC: F01N3/02 ,  B01D53/94 ,  F02D9/04

CPC classification number: F02D41/025 ,  F01N3/035 ,  F01N3/103 ,  F01N3/2033 ,  F01N9/002 ,  F01N13/009 ,  F01N2240/36 ,  F01N2610/03 ,  F01N2900/0601 ,  F02D41/029 ,  F02D2041/026 ,  Y02T10/26 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To oxidize and remove PM accumulated on a filter, while inhibiting degradation of exhaust gas emission and fuel-economy in an exhaust emission control system of an internal combustion engine provided with the filter in the exhaust gas passage of the engine for collecting PM in the exhaust gas. SOLUTION: In the exhaust emission control system, a catalyst having the function of oxidation is placed in the exhaust gas passage upstream of the filter, or it is carried on the filter. The filter is regenerated by supplying unburned fuel to the catalyst. If the adhesion of unburned fuel on the passage reaches at least a specified amount in the filter-regeneration control, an exhaust gas temperature-raising control is started so at to raise the temperature of exhaust gas by raising the engine load. Thereafter, the exhaust gas temperature-raising control is stopped in the timing when the amount of adhesion of unburned fuel on the passage, which increases again upon stop of the exhaust gas temperature-raising control, becomes at most the specified amount of adhesion when the filter regeneration control is stopped. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了氧化和除去积聚在过滤器上的PM，同时抑制在废气通道中设置有过滤器的内燃机的废气排放控制系统中的废气排放和燃料经济性的降低 用于在废气中收集PM的发动机。 解决方案：在废气排放控制系统中，具有氧化功能的催化剂放置在过滤器上游的废气通道中，或者将其载持在过滤器上。 通过向催化剂供应未燃烧的燃料来再生过滤器。 如果过滤器再生控制中未燃烧燃料在通道上的粘附至少达到规定量，则开始排气升温控制，以通过提高发动机负荷来提高废气的温度。 此后，在排气升温控制停止时再次上升的通路上的未燃烧燃料的附着量在最大限度地为规定的粘合量时，停止排气升温控制 过滤器再生控制停止。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2003314257A

公开(公告)日：2003-11-06

申请号：JP2002116241

申请日：2002-04-18

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

Inventor： HAYASHI KOTARO ,  MATSUSHITA SOICHI ,  OKI HISASHI ,  ISHIYAMA SHINOBU ,  KOBAYASHI MASAAKI ,  NEGAMI AKIHIKO

IPC: F01N3/02 ,  B01D53/56 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N3/36 ,  F02D41/04

CPC classification number: Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To provide a technology which purifies NOx which flows out when a reducing agent is supplied to a NOx catalyst in an exhaust emission control device for an internal combustion engine. SOLUTION: The exhaust emission control device for the internal combustion engine is provided with the NOx catalyst 10 to reduce NOx in the presence of the reducing agent; a three-way catalyst 13 which is provided on the downstream side of the NOx catalyst 10, oxidizes hydrocarbon and carbon monoxide, reduces NOx, and has an oxygen storing capacity; an oxidation catalyst 14 which is provided on the downstream side of the three-way catalyst, 13 and has an oxidation function and the oxygen storing capacity; and a reducing agent supplying means 20 for supplying the reducing agent to the NOx catalyst 10. And it is set so that the closer the catalyst to the downstream side, the more the oxygen storing capacity is increased. COPYRIGHT: (C)2004,JPO

Abstract translation: 解决的问题：提供一种净化在向内燃机的废气排放控制装置中向NOx催化剂供给还原剂时流出的NOx的技术。 解决方案：内燃机的废气排放控制装置设置有NOx催化剂10，以在还原剂的存在下还原NOx; 设置在NOx催化剂10的下游侧的三元催化剂13，氧化碳氢化合物和一氧化碳，还原NO x，具有储氧能力; 设置在三元催化剂的下游侧的具有氧化功能和氧气储存能力的氧化催化剂14， 以及用于将还原剂供给至NOx催化剂10的还原剂供给装置20.设定为使催化剂向下游侧越靠近，氧气存储容量越增加。 版权所有（C）2004，JPO

公开(公告)号：JP2003293744A

公开(公告)日：2003-10-15

申请号：JP2002102465

申请日：2002-04-04

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

Inventor： HAYASHI KOTARO ,  MATSUSHITA SOICHI ,  OKI HISASHI

IPC: F02D45/00 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine having technology for determining a regeneration timing for SOx poisoning. SOLUTION: The exhaust emission control device comprises a NOx catalyst 5, a NOx reducing means 8 for supplying a reducer to the NOx catalyst 5 and reducing NOx, an oxygen concentration detecting means 7 for detecting oxygen concentration downstream from the NOx catalyst 5, an oxygen concentration storing means 11 for storing oxygen concentration when no SOx poisoning occurs and the reducer is supplied, and a SOx poisoning amount estimating means 11 for estimating a SOx poisoning amount of the NOx catalyst by comparing the oxygen concentration detected by the oxygen concentration detecting means 7 with the oxygen concentration stored by the oxygen concentration storing means 11 when the reducer is supplied to the NOx catalyst 5. COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：提供一种具有用于确定SOx中毒的再生定时的技术的用于内燃机的废气排放控制装置。 解决方案：废气排放控制装置包括NOx催化剂5，用于向NO x催化剂5供给还原剂并还原NOx的NOx还原装置8，用于检测来自NOx催化剂5的下游的氧浓度的氧浓度检测装置7 ，用于在不发生SOx中毒时存储氧浓度的氧浓度存储装置11和供给还原剂的SO x中毒量估计装置11，用于通过比较由氧浓度检测的氧浓度来估计NOx催化剂的SOx中毒量 检测装置7，当将还原剂供给至NOx催化剂5时，由氧浓度存储装置11存储氧浓度。（C）2004，JPO

公开(公告)号：JP2003254038A

公开(公告)日：2003-09-10

申请号：JP2002057790

申请日：2002-03-04

Applicant: TOYOTA MOTOR CORP

Inventor： ONO TOMOYUKI ,  FUKUDA KOICHIRO ,  MATSUSHITA SOICHI ,  FUKUMA TAKAO ,  ODA TOMIHISA

IPC: F01N3/02 ,  F01N3/24 ,  F01N3/36

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine for accurately presuming a temperature of a catalyst bed of a particulate filter carrying the catalyst. SOLUTION: The exhaust emission control device of the internal combustion engine is provided with a particulate filter (DPNR) carrying on the catalyst and an addition fuel feed means for feeding a fuel to the DPNR in the exhaust passage. The temperature of the catalyst bed of the DPNR is presumed using a model for determining a thermal balance aiming at the DPNR. This model describes an oxidation quantity of heat Qpm of the particulate flowing into the DPNR; a quantity of heat Qin of an inlet gas; a reaction quantity of heat Qract of the fed addition fuel; a reaction quantity of heat Qhc of an unburned fuel in an exhaust gas; a release quantity of heat Qtruns radiated from a surface of the DPNR and a quantity of heat Qex of an outlet gas by an operation formula. The exhaust emission control device calculates the thermal balance of the DPNR by this model. The temperature of the catalyst bed of the DPNR is presumed based on the calculated thermal balance and the heat capacity of the DPNR. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003148147A

公开(公告)日：2003-05-21

申请号：JP2002339295

申请日：2002-11-22

Applicant: TOYOTA MOTOR CORP

Inventor： UMEHANA TOYOICHI ,  MATSUSHITA SOICHI ,  ABE SHIZUO ,  HAJIMA TAKASHI ,  KOBAYASHI TATSUO ,  MURAMATSU NOBUYUKI ,  TSUTSUMI YASUHITO ,  FUJIMORI KOKICHI

IPC: F02B17/00 ,  F02B23/10 ,  F02B75/12 ,  F02F1/24 ,  F02F3/26 ,  F02M61/18

Abstract: PROBLEM TO BE SOLVED: To surely prevent misfire at the time of burning a laminated layer in a cylinder injection type spark ignition internal combustion engine for injecting fuel into a comparatively thin flat fan shape. SOLUTION: This engine comprises an ignition plug, a cavity 8 formed on a top face of a piston, and a fuel injection valve 7 for injecting fuel into the cavity in a comparatively thin flat fan shape. The cavity has a bottom wall 8a, an opposite side wall 8b opposed to the fuel injection valve, and a return part 8c arranged on the opposite side wall and deflecting the fuel running on the opposite side wall in an inside direction of the cavity. The opposite side wall, when viewed from a flat face, has a portion composed of one part of an oval shape with an injection hole position of the fuel injection valve as one focal point HC and the position near the ignition plug as the other focal point MC. The position near the ignition plug as the other focal point is separated from a center line PC of the ignition plug to the fuel injection valve side.

公开(公告)号：JP2003013739A

公开(公告)日：2003-01-15

申请号：JP2002130614

申请日：2002-05-02

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

Inventor： UMEHANA TOYOICHI ,  KOBAYASHI TATSUO ,  HATTORI FUMIAKI ,  HAJIMA TAKASHI ,  HOKUTOU HIROYUKI ,  KASHIWAKURA TOSHIMI ,  KANDA MUTSUMI ,  TANAKA KOHACHI ,  MATSUSHITA SOICHI ,  ABE SHIZUO ,  MURAMATSU NOBUYUKI

IPC: F02B23/10 ,  F02B75/12 ,  F02D41/32 ,  F02M45/00 ,  F02M47/00 ,  F02M61/10 ,  F02M61/14

CPC classification number: F02B2075/125 ,  Y02T10/123 ,  Y02T10/125

Abstract: PROBLEM TO BE SOLVED: To provide a cylinder-injection-of-fuel-type spark ignition internal combustion engine capable of surely enlarging a stratiform combustion area to a high load side by securing the ignitionability. SOLUTION: This cylinder-injection-of-fuel-type spark ignition internal combustion engine is provided with an ignition plug and a fuel injection valve for directly injecting the fuel into a cylinder, and the fuel injected from the fuel injection valve is passed through the neighborhood of the ignition plug directly or deflectively to lower an injection ratio in a terminal stage of the fuel injection of the fuel injection valve.

Abstract translation: 要解决的问题：提供一种能够通过确保点火性确保将层状燃烧区域扩大到高负荷侧的燃料喷射型燃料式火花点火内燃机。 解决方案：该气缸注射燃料型火花点火内燃机设置有火花塞和燃料喷射阀，用于将燃料直接喷射到气缸中，并且从燃料喷射阀喷射的燃料通过 燃料喷射阀的燃料喷射的终端阶段直接或偏转地降低火花塞的附近。

公开(公告)号：JP2003013732A

公开(公告)日：2003-01-15

申请号：JP2001201394

申请日：2001-07-02

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

Inventor： HAYASHI KOTARO ,  MATSUSHITA SOICHI ,  OKI HISASHI ,  OGAWARA SEIJI

IPC: F01N3/02 ,  B01D53/94 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F01N3/36 ,  F01N13/02 ,  F02B37/00 ,  F02M25/07

CPC classification number: F01N3/0821 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/0842 ,  F01N13/009 ,  F01N13/0093 ,  F01N2330/06 ,  F01N2370/04 ,  F01N2570/14 ,  F01N2610/03 ,  F02B29/0406 ,  F02B37/00 ,  F02M26/05 ,  F02M26/23 ,  Y02A50/2344

Abstract: PROBLEM TO BE SOLVED: To properly inhibit the accumulation of fine particles in a exhaust gas on an exhaust purifying catalyst, in an exhaust emission purifier of an internal combustion engine provided with the exhaust purifying catalyst including a NOx adsorbent for adsorbing and releasing NOx in accordance with the amount of reduction component in the exhaust gas. SOLUTION: An engine 1 is provided with a NOx catalyst 42A in its exhaust system 40, and the NOx purifying action by the catalyst 42A is allow to function by properly increasing the reduction component (HC component) in the exhaust gas through a fuel addition nozzle 17. Only a noble metal catalyst is held on an upstream part as an exhaust channel of a honeycomb structure forming the NOx catalyst 42A, and the NOx adsorbent is not held on the same. Both of the noble metal catalyst and the NOx adsorbent of predetermined concentration are held on a downstream part as the exhaust channel of the honeycomb structure forming the NOx catalyst 42A.

Abstract translation: 要解决的问题：为了适当地抑制排气净化催化剂中的废气中的细颗粒的累积，在具有排气净化催化剂的内燃机的排气净化器中，所述排气净化催化剂包括用于吸附和释放NOx的NOx吸附剂 与废气中的还原成分的量。 解决方案：发动机1在其排气系统40中设置有NOx催化剂42A，并且由催化剂42A的NOx净化作用允许通过适当地增加排气中的还原成分（HC成分）通过燃料添加喷嘴 作为形成NOx催化剂42A的蜂窝结构体的排气通道，只有贵金属催化剂被保持在上游部分，并且NOx吸附剂不保持在其上。 作为形成NOx催化剂42A的蜂窝结构体的排气通道，将预定浓度的贵金属催化剂和NOx吸附剂两者保持在下游侧。