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    • 2. 发明专利
    • Method for regenerating particulate filter
    • 再生颗粒过滤器的方法
    • JP2010270726A
    • 2010-12-02
    • JP2009125111
    • 2009-05-25
    • Hino Motors LtdToyota Motor Corpトヨタ自動車株式会社日野自動車株式会社
    • YABE MASAHIKOTAGAMI YOSHIHIROOGIMOTO KATSUSHIKANEDA TAKESHIHAYASHI TAKAHIKOKOGA MASAKI
    • F01N3/02F02M25/07
    • Y02T10/121
    • PROBLEM TO BE SOLVED: To surely avoid a regeneration failure while suppressing the exhaust amount of NOx when forcibly regenerating a particulate filter.
      SOLUTION: A method for forcibly regenerating the particulate filter 13 is carried out by providing an oxidation catalyst 14 in a prior stage of the particulate filter 13 equipped at the intermediate part of an exhaust pipe 11, adding fuel into exhaust gas 9 upstream of the oxidation catalyst 14, burning collected particulates in the particulate filter 13 in a subsequent stage with reaction heat generated during the oxidation reaction of the added fuel on the oxidation catalyst 14 in the prior stage. Forced regeneration of the particulate filter 13 is carried out while recirculating part of the exhaust gas 9 from the exhaust side to the intake side, and the recirculation of exhaust gas 9 is stopped when at least one of the conditions is not fulfilled out of a first condition that the regenerated time does not exceed a predetermined time and a second condition that an ignition switch 22 is not turned off during the forced regeneration.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:当强制再生微粒过滤器时,能够抑制NOx的排出量,确实避免再生失败。 解决方案:强制再生颗粒过滤器13的方法是通过在排气管11的中间部分配备的颗粒过滤器13的前一阶段提供氧化催化剂14,将燃料添加到排气9的上游 的氧化催化剂14,在随后的阶段中,在添加的燃料在氧化催化剂14的氧化反应期间产生的反应热在前一阶段中将颗粒过滤器13中收集的颗粒燃烧。 在将废气9的一部分从排气侧再循环到进气侧的同时进行颗粒过滤器13的强制再生,并且当至少一个条件不满足第一个条件时,废气9的再循环停止 条件是再生时间不超过预定时间,并且在强制再生期间点火开关22未断开的第二状态。 版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Exhaust emission purifier device of internal combustion engine
    • 内燃机排气净化装置
    • JP2005069176A
    • 2005-03-17
    • JP2003303146
    • 2003-08-27
    • Hino Motors LtdToyota Motor Corpトヨタ自動車株式会社日野自動車株式会社
    • KAMOSHITA SHINJISHOJI AKIRAYABE MASAHIKO
    • F01N3/00B01D53/94F01N3/08F01N3/24
    • PROBLEM TO BE SOLVED: To provide a technology capable of upgrading a detection accuracy of exhaust temperatures by an exhaust temperature sensor in an exhaust emission purifier device of internal combustion engine. SOLUTION: The purifier device includes a bulkhead 301 having a plurality of through-holes 301b from an upstream, an exhaust temperature sensor 4 equipped with a detecting element 4a, a casing 3 storing a catalyst 303a having an oxidizing function and provided in an exhaust passage, and a reducing agent supplying means for supplying the reducing agent from upper stream side than the bulkhead 301. The detecting element 4a of the exhaust temperature sensor 4 is projected on the bulkhead 301 parallel to the circulating direction of exhaust gas, and a through-hole 301c is provided such that it overlaps the projected detecting element. Further, the size of the through-hole 301c that overlaps the projected detecting element 4a is made larger than the ones of the other through-holes 301b. Consequently, the volume of exhaust gas that passes through the detecting element 4a can be larger. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种能够通过内燃机的排气净化装置中的排气温度传感器来提高排气温度的检测精度的技术。 解决方案:净化装置包括:隔板301,其具有来自上游的多个通孔301b,配备有检测元件4a的排气温度传感器4;存储具有氧化功能的催化剂303a的壳体3, 排气通道和还原剂供给装置,用于从上游侧向隔板301供给还原剂。排气温度传感器4的检测元件4a与排气的循环方向平行地突出在隔板301上, 通孔301c设置成与突出的检测元件重叠。 此外,与突出的检测元件4a重叠的通孔301c的尺寸比其他通孔301b的尺寸大。 因此,能够使通过检测元件4a的排气量变大。 版权所有(C)2005,JPO&NCIPI
    • 5. 发明专利
    • Exhaust emission control device
    • 排气排放控制装置
    • JP2009013932A
    • 2009-01-22
    • JP2007178713
    • 2007-07-06
    • Hino Motors LtdToyota Motor Corpトヨタ自動車株式会社日野自動車株式会社
    • YABE MASAHIKOYOKOTA HARUYUKISHIMIZU TAKAHARUNINOMIYA HIROYUKISATO SHINYAKANEDA TAKESHITOSHIOKA TOSHISUKEWATABE SATORUODA TOMIHISATAUCHI YUTAKA
    • F01N3/08F01N3/02F01N3/28
    • F01N3/2066F01N13/009F01N2570/14F01N2610/02Y02A50/2344Y02T10/24
    • PROBLEM TO BE SOLVED: To obtain excellent NOx reducing effect from an exhaust temperature lower than a conventional one without causing a trouble in engine starting or the like after long time engine stop.
      SOLUTION: An exhaust emission control device which includes at some midpoint of an exhaust pipe 4 a selective reduction type catalyst 5 capable of selectively reacting NOx with ammonia even in the presence of oxygen, and which reduces and controls NOx by adding urea water 6 as a reducing agent in the exhaust pipe 4 on the upstream side from the selective reduction type catalyst 5, is provided with a particulate filter 10 attaching an oxidation catalyst 9 to a front stage thereof in the exhaust pipe 4 on the upstream side from an adding position of the urea water 6, and NOx adsorbing catalyst 17 having a property in which NOx in the exhaust 3 is physically adsorbed at a temperature lower than an active lower limit temperature of the selective reduction type catalyst 5 and the absorbed NOx is discharged at a temperature near an active lower limit temperature of the selective reduction type catalyst 5, between the particulate filter 10 and an adding position of the urea water 6.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了从低于常规排气温度的废气温度获得优异的NOx还原效果,在长时间的发动机停止后不会引起发动机起动等问题。 解决方案:一种废气排放控制装置,其在排气管4的一些中点处包括选择性还原型催化剂5,其能够在氧气存在下选择性地使NOx与氨反应,并且通过添加尿素水来减少和控制NOx 作为来自选择还原型催化剂5的上游侧的排气管4中的还原剂6,在从上游侧的排气管4中设置有将氧化催化剂9附着到前级的微粒过滤器10 在低于选择还原型催化剂5的活性下限温度和吸收的NOx的温度下,具有排气3中的NOx被物理吸附的特性的NOx吸附催化剂17的排出位置排出 颗粒过滤器10与尿素水6的添加位置之间的选择还原型催化剂5的活性下限温度附近的温度。 YRIGHT:(C)2009,JPO&INPIT
    • 6. 发明专利
    • Exhaust emission control device of internal combustion engine
    • 内燃机排气控制装置
    • JP2005083276A
    • 2005-03-31
    • JP2003317148
    • 2003-09-09
    • Hino Motors LtdToyota Motor Corpトヨタ自動車株式会社日野自動車株式会社
    • KAMOSHITA SHINJISHOJI AKIRAYABE MASAHIKO
    • B01D53/56B01D53/94F01N3/02F01N3/24F01N3/28F01N3/36F01N13/08F01N7/08
    • PROBLEM TO BE SOLVED: To provide technique for inhibiting operation of an exhaust throttle valve from being restricted by a reducing agent in an exhaust emission control system of an internal combustion engine. SOLUTION: This comprises a catalyst having an oxidizing function, a reducing agent supply means for supplying the reducing agent to exhaust gas upstream the catalyst of the oxidizing function, the exhaust throttle valve provided downstream the reducing agent supply means and upstream the catalyst of the oxidizing function, and a reducing agent separation means 9(91a) provided downstream the reducing agent supply means and upstream the exhaust throttle valve for moving the reducing agent attached to a wall surface of an exhaust passage upstream the exhaust throttle valve from the wall surface of the exhaust passage into the exhaust gas. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于禁止排气节流阀的操作受到内燃机的废气排放控制系统中的还原剂的限制的技术。 解决方案:包括具有氧化功能的催化剂,还原剂供应装置,用于将还原剂供应到氧化功能催化剂上游的废气中,排气节流阀设置在还原剂供应装置的下游和催化剂上游 的氧化功能的还原剂分离装置9(91a)和设置在还原剂供给装置下游的排气节流阀的下游的还原剂分离装置9(91a),用于将附着在排气节流阀上游的排气通道的壁表面的还原剂从壁 排气通道的表面进入废气。 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • Exhaust emission control device of internal combustion engine
    • 内燃机排气控制装置
    • JP2007071161A
    • 2007-03-22
    • JP2005261183
    • 2005-09-08
    • Toyota Motor Corpトヨタ自動車株式会社
    • KAMOSHITA SHINJITAUCHI YUTAKAYABE MASAHIKOKOYANAGI YOSHITAKESASAKI SHINICHISUZUKI YOSHIYUKI
    • F01N3/36B01D53/94F01N3/24F01N13/18
    • PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine capable of restraining adhesion of fuel injected from a fuel addition valve to a wall surface and capable of restraining deposition of soot. SOLUTION: A catalyst 10 for exhaust emission control is put in the middle of an exhaust pipe 2, a fuel addition valve holding part 30 is placed in an outer side of a bending direction of a bent part 2a of the exhaust pipe 2 on the upstream side than the catalyst for exhaust emission control, and a spray passage directed to the direction along the downstream side of the exhaust pipe is formed in the fuel addition valve holding part 30, and the fuel injected from the fuel addition valve 20 attached to the fuel addition valve holding part 30 is supplied into the exhaust pipe on the downstream side than the bent part through the spray passage. The fuel addition valve holding part 30 is formed separately from the exhaust pipe 2. The fuel addition valve holding part is formed separately from the exhaust pipe, and therefore, surface treatment of the inside of the exhaust pipe can be easily performed. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:提供一种能够抑制从燃料添加阀喷射到燃料添加阀的燃料附着到能够抑制煤烟沉积的内燃机的废气排放控制装置。 解决方案:将废气排放控制用催化剂10放置在排气管2的中间,将燃料添加阀保持部30配置在排气管2的弯曲部2a的弯曲方向的外侧 在排气排放控制用催化剂的上游侧,在燃料添加阀保持部30中形成有沿着排气管下游侧的喷射通路,从附加了燃料添加阀20的燃料喷射 燃料添加阀保持部30通过喷雾流路被供给到比弯曲部的下游侧的排气管。 燃料添加阀保持部30与排气管2分开形成。燃料添加阀保持部与排气管分开形成,因此能够容易地进行排气管内部的表面处理。 版权所有(C)2007,JPO&INPIT