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公开(公告)号：JP2005180290A
公开(公告)日：2005-07-07
申请号：JP2003421403
申请日：2003-12-18
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： YAMAGUCHI MASAAKI , KOBAYASHI MASAAKI
Abstract: PROBLEM TO BE SOLVED: To make compatibility between white smoke prevention and catalyst control appropriate, in a catalyst control device for an internal combustion engine executing fuel addition prohibition.
SOLUTION: This catalyst control device for the internal combustion engine is constituted such that when fuel accumulation quantity Fhp inside an exhaust system by fuel addition becomes larger than reference accumulation quantity Xf ("YES" in S152), fuel addition is prohibited (S156), and thereby further fuel increase in the fuel accumulation quantity Fhp is inhibited. Addition prohibition time Tx is set such that as cumulative intake air quantity GAhp becomes larger, timing of release of fuel addition prohibition becomes earlier by a map Maptx (S162). Due to this, catalyst control can be appropriately executed by releasing fuel addition prohibition as early as possible while white smoke is effectively prevented. Accordingly, the compatibility between white smoke prevention and catalyst control can be made appropriate.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：为了在执行燃料添加禁止的内燃机的催化剂控制装置中适当地使白烟防止和催化剂控制之间的兼容性。 解决方案：用于内燃机的催化剂控制装置构成为：当通过燃料添加使排气系统内的燃料积存量Fhp变得大于基准积存量Xf（S152中的“是”）时，禁止燃料添加 S156），能够抑制燃料蓄积量Fhp的燃料增加。 设定加法禁止时间Tx，使得当累积进气量GAhp变大时，燃料添加禁止的释放时间通过地图Maptx变得更早（S162）。 因此，通过尽可能早地释放燃料添加禁止来有效地防止白烟，可以适当地执行催化剂控制。 因此，可以使白烟防止和催化剂控制之间的兼容性适当。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004320841A
公开(公告)日：2004-11-11
申请号：JP2003108053
申请日：2003-04-11
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： KOBAYASHI MASAAKI
Abstract: PROBLEM TO BE SOLVED: To suppress deterioration of emission, when regenerating the exhaust cleaning ability of an exhaust cleaning means which performs exhaust cleaning, in an exhaust cleaning system for an internal combustion engine which generates power by its own output. SOLUTION: In the internal combustion engine which is equipped with a power generation means, which generates power by the output of the internal combustion engine and an electricity accumulating means which accumulates electricity generated by the generation means, power is generated (S102 and S103) by the generation means, when the quantity of accumulated electricity in the electricity accumulation means is not larger than the first residual quantity, when the exhaust cleaning ability of the exhaust cleaning means which cleans the exhaust discharged from the internal combustion engine is not generated, and the power is generated (S104 and S106) by the generation means, when the quantity of the accumulated electricity in the electricity accumulation means is not larger than the second the residual quantity which is smaller than the first residual quantity, when the exhaust cleaning ability of the exhaust cleaning means is regenerated. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2004257261A
公开(公告)日：2004-09-16
申请号：JP2003045911
申请日：2003-02-24
Applicant: TOYOTA MOTOR CORP , NIPPON SOKEN
Inventor： SAKAYANAGI YOSHIHIRO , SUZUKI YUSUKE , MORIYA SAKANORI , KOBAYASHI MASAAKI , NAKAMURA SATOSHI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust pipe capable of avoiding damage to a sensor element by preventing water generated by the moisture condensation in exhaust gas from contacting with the sensor and preventing a drop in detection accuracy by the sensor, and to provide an exhaust emission control device for an internal combustion engine with the pipe. SOLUTION: A partition plate 100 separating an exhaust passage into upper and lower parts is provided in the exhaust pipe 50 to form a first passage 50A in the upper part and a second passage 50B in the lower part. A plurality of communication holes 101 communicating the first passage 50A and the second passage 50B is provided in the plate 100. There is further provided a wall 102 inclined downwards below the hole 101, thereby forming a communication passage communicating the first and the second passages 50A, 50B. COPYRIGHT: (C)2004,JPO&NCIPI
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公开(公告)号：JP2004225617A
公开(公告)日：2004-08-12
申请号：JP2003014647
申请日：2003-01-23
Applicant: Nippon Soken Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社日本自動車部品総合研究所
Inventor： MORIYA SAKANORI , KOBAYASHI MASAAKI , SUZUKI YUSUKE , SAKAYANAGI YOSHIHIRO , NAKAMURA SATOSHI
IPC: G01N27/409 , F01N13/00 , F01N99/00 , F02D35/00 , F01N7/00
Abstract: PROBLEM TO BE SOLVED: To provide a device capable of concurrently realizing both of protection of a sensor provided on an exhaust passage and improvement of exhaust characteristics immediately after starting an engine. SOLUTION: This protective device for a sensor in an engine 1, of which one of main constituent elements is an electronic control unit 80, successively estimates a residing water amount on the upstream side of an oxygen concentration sensor 55 in the exhaust passage 50 in consideration of data history before engine starting. If the residing water amount is above a reference value, energization on a heater 55B provided on the oxygen concentration sensor 55 is regulated, and control for effectively decreasing the residing water amount is performed and if the residing water amount is below the reference value, energization on the heater 55B is started. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种能够同时实现设置在排气通道上的传感器的保护和提高发动机起动后的排气特性的装置。 发动机1中的传感器用保护装置，其主要构成要素之一是电子控制单元80，依次估计排气通路中的氧浓度传感器55的上游侧的滞留水量 考虑到发动机启动前的数据历史。 如果滞留水量高于参考值，则调节设置在氧浓度传感器55上的加热器55B的通电，进行有效降低滞留水量的控制，并且如果滞留水量低于基准值，则通电 在加热器55B上开始。 版权所有（C）2004，JPO＆NCIPI
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公开(公告)号：JP2003262171A
公开(公告)日：2003-09-19
申请号：JP2002062208
申请日：2002-03-07
Applicant: TOYOTA MOTOR CORP
Inventor： ISHIYAMA SHINOBU , OKI HISASHI , HAYASHI KOTARO , MAGATA HISAFUMI , KOBAYASHI MASAAKI , SHIBATA DAISUKE , OBA TAKAHIRO , NEGAMI AKIHIKO
Abstract: PROBLEM TO BE SOLVED: To provide a fuel supply device for an internal combustion engine capable of sufficiently attenuating reflected waves generated with the opening/ closing operation of a fuel injection valve and capable of securing high accuracy in control of fuel injection, in regard to the fuel supply device provided with a function for injecting the fuel stored in the high-pressure condition into a combustion chamber of the internal combustion engine through the fuel injection valve. SOLUTION: When pressure waves are transmitted from a common rail to the fuel injection valve through a fuel passage unit 80, the pressure on a common rail side is higher than the pressure on a fuel injection side, and a valve element 83 is positioned at a position expressed in a figure a, and the fuel is efficiently supplied to the fuel injection valve. When the reflected waves are transmitted from the fuel injection valve side to the common rail side, the pressure on the fuel injection valve side is higher than the pressure on the common rail side, and the valve element 83 is positioned at a position expressed in a figure b, and transmission of the reflected waves is restricted. With this structure, fluctuation of the fuel pressure to be generated after pilot injection can be effectively reduced. COPYRIGHT: (C)2003,JPO
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Patent Agency Ranking
公开(公告)号：JP2003214132A
公开(公告)日：2003-07-30
申请号：JP2002017374
申请日：2002-01-25
Applicant: TOYOTA MOTOR CORP
Inventor： HAYASHI KOTARO , OKI HISASHI , ISHIYAMA SHINOBU , MAGATA HISAFUMI , KOBAYASHI MASAAKI , SHIBATA DAISUKE , OBA TAKAHIRO , NEGAMI AKIHIKO
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust gas purifying device for an internal combustion engine to suppress and restore poisoning of a catalyst 12 in an exhaust gas passage 4 by trapping a sulfur content in blow-by gas. SOLUTION: The internal combustion engine 1 is provided with an S trap 11 to trap a sulfur content in blow-by gas situated in a blow-by gas passage 3 through which blow-by gas 9 is re-circulated from a crank case 8 to a suction system (a suction passage 2). Sulfur content in the blow-by gas is trapped by an SOx trap agent in the S trap 11. As a result, S-poisoning of an exhaust catalyst 12 can be suppressed, and a frequency to effect S-poisoning restoration treatment can be remarkably decreased. Further, since an SOx trap agent can trap not only a sulfur content in the blow-by gas 9 but also a phosphorus content, lowering of oxidation activity of the catalyst can be suppressed and ash accumulated at the exhaust catalyst 12 can be also reduced. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003155925A
公开(公告)日：2003-05-30
申请号：JP2002012661
申请日：2002-01-22
Applicant: TOYOTA MOTOR CORP
Inventor： HAYASHI KOTARO , OKI HISASHI , ISHIYAMA SHINOBU , MAGATA HISAFUMI , KOBAYASHI MASAAKI , SHIBATA DAISUKE , OBA TAKAHIRO , NEGAMI AKIHIKO
Abstract: PROBLEM TO BE SOLVED: To provide a technology which estimates that the engine operating condition is suitable for recovering SOx poisoning, and starts the temperature rise of a NOx occluding agent in advance, in an exhaust emission control device of an internal combustion engine with the NOx occluding agent. SOLUTION: The exhaust emission control device comprises the NOx occluding agent to occlude and reduce NOx in the exhaust gas, a sulfur poisoning recovery control means to control the temperature rise of the NOx occluding agent and the sulfur poisoning control means, an execution acceptance/rejection estimating means to estimate whether or not the engine operating condition can perform the sulfur poisoning recovery control by the sulfur poisoning control means. The sulfur poisoning control means controls the temperature rise of the NOx occluding agent when the execution acceptance/rejection estimating means estimates that the engine operating condition can perform the sulfur poisoning recovery control.
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公开(公告)号：JP2003120390A
公开(公告)日：2003-04-23
申请号：JP2001313127
申请日：2001-10-10
Applicant: TOYOTA MOTOR CORP
Inventor： OKI HISASHI , KOBAYASHI MASAAKI , MAGATA HISAFUMI , SHIBATA DAISUKE , ISHIYAMA SHINOBU , NEGAMI AKIHIKO
Abstract: PROBLEM TO BE SOLVED: To solve the problem of excessive dilution of unburned fuel in lubricating oil when secondary injection is effected for unburnt fuel serving as a reducing agent added to a catalyst provided in an exhaust emission control device of an internal combustion engine. SOLUTION: If the period from the date of the previous secondary injection to the date of the present secondary injection is longer than the period required for the unburned fuel diluted in the lubricating oil to be entirely vaporized, then no fuel was diluted in the lubricating oil and therefore the secondary injection is greatly retarded to increase the amount of unburned fuel added to the catalyst, while also permitting the fuel to be diluted into the lubricating oil within an allowable range. If the first period is shorter than the second period, then fuel was diluted in the lubricating oil and therefore the retardation of the secondary injection is set to meet a non-diluting requirement or, even if it is diluted, it is diluted only by a trace amount, thus preventing the lubricating oil from being excessively diluted by the unburned fuel.
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公开(公告)号：JP2003120279A
公开(公告)日：2003-04-23
申请号：JP2001309347
申请日：2001-10-05
Applicant: TOYOTA MOTOR CORP
Inventor： OKI HISASHI , KOBAYASHI MASAAKI , MAGATA HISAFUMI , SHIBATA DAISUKE , ISHIYAMA SHINOBU , NEGAMI AKIHIKO
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device having a process for adding a reducing agent to a nitrogen oxides absorbent and releasing nitrogen oxides so as to perform reduction, wherein a reducing agent is liquidized and retained in an exhaust-collector pipe when the temperature of the exhaust- collector pipe is lower than a predetermined temperature at the time of adding the reducing agent near the exhaust-collector pipe, and the liquidized reducing agent is whitened and released to the atmosphere when an internal combustion engine is next in a high load condition. SOLUTION: The temperature of catalyst inflow gas and the temperature inside an exhaust-collector pipe satisfy such a relationship that the temperature of the catalyst inflow gas is not less than the temperature inside the exhaust- collector pipe. When the temperature of the catalyst inflow gas is measured and is lower than a predetermined temperature, the temperature inside the exhaust-collector pipe is recognized as lower than a predetermined temperature. Then, addition of the reducing agent is restricted in the exhaust-collector pipe, so as to liquidize the reducing agent inside the exhaust-collector pipe.
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公开(公告)号：JP2003083152A
公开(公告)日：2003-03-19
申请号：JP2001269324
申请日：2001-09-05
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： KOBAYASHI MASAAKI
IPC: G01N27/41 , F02D35/00 , F02D45/00 , G01N27/409 , G01N27/416
Abstract: PROBLEM TO BE SOLVED: To prevent the an air-fuel ratio sensor from being damaged by wetting and the combustion of soot and the like when being heated by a heater.
SOLUTION: This air-fuel ratio sensor comprises the air-fuel ratio sensor 37, the heater 76 for heating the air-fuel ratio sensor 37, an energizing means 60 for energizing the heater 76 to keep an arbitrary temperature, and a determining means 35 for determining whether the water is attached to an inner wall of an exhaust passage 19 or not, and the heater 76 is energized to keep the air-fuel sensor 37 at a temperature lower than an ordinary temperature when the attachment of the water to a wall face of the exhaust passage 19 is determined.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：为了防止空气燃料比传感器在被加热器加热时被润湿和烟灰等的燃烧损坏。 解决方案：该空燃比传感器包括空燃比传感器37，用于加热空燃比传感器37的加热器76，用于使加热器76通电以保持任意温度的通电装置60，以及确定装置35 用于确定水是否附接到排气通道19的内壁，并且当将水附接到壁上时，加热器76通电以将空气 - 燃料传感器37保持在低于常温的温度 确定排气通道19的表面。
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