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公开(公告)号：JP2005139994A
公开(公告)日：2005-06-02
申请号：JP2003376679
申请日：2003-11-06
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： YOKOTA HARUYUKI , GEN KISHU , SHIMODA MASATOSHI
CPC classification number: Y02T10/125 , Y02T10/18
Abstract: PROBLEM TO BE SOLVED: To provide a diesel engine for actualizing premixture compression ignition without greatly worsening fuel consumption even under operating conditions with its load higher than conventional one.
SOLUTION: The diesel engine 1 executes fuel injection at a timing earlier than that of a compression top dead center to accelerate the premixture ratio of fuel for ignition combustion in a combustion chamber 5. It comprises a variable compression ratio mechanism 14 for mechanically increasing/reducing the volume of a control chamber 11 communicated with the combustion chamber 5 to change a geometric compression ratio, a variable valve timing mechanism 19 for slowing or quickening the closing operation of an intake valve 9 to change an effective compression ratio, and a control device 28 for controlling the variable compression ratio mechanism 14 and the variable valve timing mechanism 19 to keep their heat efficiency at maximum values depending on operated conditions at the same time.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：即使在其负载高于常规的操作条件下，提供用于实现预混合压缩点火的柴油发动机而不会极大恶化燃料消耗。 解决方案：柴油发动机1在比压缩上止点早的时间执行燃料喷射，以加速燃烧室5中用于点燃燃烧的燃料的预混合比。其包括用于机械的可变压缩比机构14 增加/减少与燃烧室5连通以改变几何压缩比的控制室11的体积，用于减慢或加快进气阀9的关闭操作以改变有效压缩比的可变气门正时机构19，以及 控制装置28，用于控制可变压缩比机构14和可变气门正时机构19，以根据操作条件同时将其热效率保持在最大值。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005076460A
公开(公告)日：2005-03-24
申请号：JP2003304237
申请日：2003-08-28
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： SHIMODA MASATOSHI
CPC classification number: F01N2470/24
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of efficiently forming a rich atmosphere in a short time by well mixing a reducer injected from a nozzle of an injector into exhaust gas. SOLUTION: A NOx storing/reducing catalyst 10 is mounted on the midway of an exhaust pipe 9 for oxidizing NOx in exhaust gas 8, temporarily storing it in the state of nitrate and decomposing and releasing the NOx in the presence of the reducer during the degradation of the concentration of oxygen in the exhaust gas 8. The injector 11 is arranged on the upstream side of the NOx storing/reducing catalyst 10 in the exhaust pipe 9 for adding fuel 13 into the exhaust gas 8. A ceramic coating 12 as a heat insulating structure is applied to a position downstream from the end of the nozzle of the injector 11 but close to the end of the nozzle over a required range in the direction of the axial center of the exhaust pipe 9. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种能够在短时间内有效地形成富气氛的排气排放控制装置，通过将从喷射器的喷嘴喷射的还原剂充分混合到排气中。 解决方案：NOx排放还原催化剂10安装在排气管9的中间，用于氧化废气8中的NOx，将其以硝酸盐的状态临时储存，并在还原剂存在下分解和释放NOx 在废气8中的氧浓度降低期间。喷射器11配置在排气管9中的NOx吸留还原催化剂10的上游侧，用于将燃料13添加到废气8中。陶瓷涂层12 由于隔热结构被施加到喷射器11的喷嘴的端部下游的位置处，而是在排气管9的轴向中心的所需范围内靠近喷嘴的端部。
COPYRIGHT （C）2005，JPO＆NCIPI
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公开(公告)号：JP2003065041A
公开(公告)日：2003-03-05
申请号：JP2001253338
申请日：2001-08-23
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： SHIMODA MASATOSHI , HOSOYA MITSURU
CPC classification number: Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To correctly estimate the poisoning degree of an NOx occlusion and reduction catalyst poisoned by sulfates.
SOLUTION: This exhaust emission control device for controlling the exhaust gas 3 of a diesel engine 1 by the NOx occlusion/reduction catalyst 5 is constituted such that based on the ever-changing total fuel injection amounts obtained from the opening degree signal 13a of an accelerator sensor 13 and the revolution signal 14a of a revolution sensor 14, a given sulfur concentration in a fuel and a catalyst capacity, an SOx occlusion amount in the NOx occlusion/ reduction catalyst 5 is calculated by a control unit 15 and then, a drive command signal 9a and a valve opening command signal 11a as desulfurizing commands can be outputted from the control unit 15 when the integrated value of the above SOx occlusion amount exceeds a prescribed threshold value.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：正确估计硫酸盐中毒的NOx吸留和还原催化剂的中毒程度。 解决方案：用于通过NOx吸留还原催化剂5控制柴油发动机1的排气3的废气排放控制装置构成为：基于从加速器的开度信号13a获得的不断变化的总燃料喷射量 传感器13和旋转传感器14的旋转信号14a，燃料中的给定硫浓度和催化剂容量，通过控制单元15计算NOx吸留还原催化剂5中的SO x吸留量，然后由驱动指令 当上述SOx遮挡量的积分值超过规定的阈值时，信号9a和作为脱硫指令的开阀指令信号11a可以从控制单元15输出。
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公开(公告)号：JP2002349236A
公开(公告)日：2002-12-04
申请号：JP2001157205
申请日：2001-05-25
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , HOSOYA MITSURU
IPC: F01N3/02 , B01D39/14 , B01D46/44 , B01D53/94 , B01J29/44 , F01N3/20 , F01N3/28 , F01N3/30 , F01N3/36
Abstract: PROBLEM TO BE SOLVED: To reduce exhaust amounts of NOx and particulates contained in exhaust gas. SOLUTION: A NOx occluding reduction catalyst 24 is provided in an exhaust pipe 16 of an engine 11, and a liquid injecting nozzle 29 capable of injecting hydrocarbonic liquid toward the NOx occluding reduction catalyst is provided in the exhaust pipe in an exhaust gas upstream of the NOx occluding reduction catalyst. A hydrocarbonic liquid feeding means 36 feeds liquid to the liquid injecting nozzle via a liquid regulating valve 34, and a particulate filter 26 functioning as an oxidation catalyst is provided in the exhaust pipe in an exhaust gas downstream of the NOx occluding reduction catalyst. A bypass pipe 38 is connected to the exhaust pipe so as to bypass the NOx occluding reduction catalyst, and exhaust gas regulating valves 41 and 42 are switched so as to send the exhaust gas through either one of the NOx occluding reduction catalyst or the bypass pipe. A controller 44 respectively controls the liquid regulating valve and the exhaust gas regulating valves on the basis of a detection output of a temperature sensor 43 detecting exhaust gas temperature inside the exhaust pipe in the exhaust gas upstream of the NOx occluding reduction catalyst.
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公开(公告)号：JP2001317332A
公开(公告)日：2001-11-16
申请号：JP2000130848
申请日：2000-04-28
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , HOSOYA MITSURU
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device improving the durability of a particulate filter and capable of avoiding clogging in a short period. SOLUTION: The particulate filter 11 is provided in the middle of an exhaust pipe 9 in which exhaust gas 7 flows, and a first oxidation catalyst 12 and a second oxidation catalyst 13 are provided on the upstream side and the downstream side across the particulate filter 11 respectively so that the exhaust gas 7 passing through the first oxidation catalyst 12 can be guided to the second oxidation catalyst 13 by properly detouring the particulate filter 11 through a by-path passage 14. The particulate filter 11 is used only under the condition that the particulates trapped by the particulate filter 11 can be regenerated by self-combustion.
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Patent Agency Ranking
公开(公告)号：JP2001115824A
公开(公告)日：2001-04-24
申请号：JP29206799
申请日：1999-10-14
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , MOGI HIRONOBU
Abstract: PROBLEM TO BE SOLVED: To reduce particulate and NOx in exhaust gas. SOLUTION: An exhaust emission control device is provided with an NO oxidation catalyst 13 disposed in an exhaust pipe 12 of a diesel engine 10, a particulate filter 14 disposed in the exhaust pipe 12 of a downstream side of exhaust gas, an injection nozzle 16 capable of injecting reducing agent 20 toward the NO oxidation catalyst 13, a reducing agent supplying means 19 for supplying the reducing agent 20 to the injection nozzle 16 through a regulating valve 18, a temperature sensor 24 for detecting the temperature of exhaust gas, and a controller 30 for supplying the reducing agent 20 to the injection nozzle 16 by opening the regulating valve 28 when the temperature of the exhaust gas within a prescribed range is detected by the temperature sensor. When pressure having prescribed pressure and less is detected by a pressure sensor 25 for detecting pressure in the exhaust pipe, and when NOx concentration of exhaust gas having prescribed concentration or more is detected by arranging an NOx sensor 26 for detecting NOx concentration of exhaust gas, the regulating value 18 may be opened by the controller 30.
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公开(公告)号：JPH10118454A
公开(公告)日：1998-05-12
申请号：JP28067996
申请日：1996-10-23
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , HOSOYA MITSURU
IPC: F01N3/08 , B01D53/56 , B01D53/94 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/50 , B01J23/52 , B01J23/72 , B01J23/75 , B01J23/89 , F01N3/10 , F01N3/28
Abstract: PROBLEM TO BE SOLVED: To attempt remarkable reduction of nitrogen oxide contained in exhaust gas over a wide temperature range. SOLUTION: An apparatus is constituted so that between an exhaust manifold 3 and an exhaust muffler 4 of an exhaust conduit 2, an oxidation catalyst 5 is arranged on the upstream side of the flow of exhaust gas, a reduction catalysts 6, 7 are arranged on the downstream side, and a hydrocarbon reducing agent is supplied from a space between them by a pump 8. In the oxidation catalyst 5, an active component of platinum or palladium is carried on an alumina carrier. A reduction catalyst is formed in two-stage structure, a reduction catalyst 6 in which at least one kind of active component selected from a group consisting of gold, silver, cobalt, and copper is carried on an alumina carrier are arranged in a preceding stage on the upstream side of the flow of exhausts gas, and a reduction catalyst 7 in which an active component of platinum, rhodium, or indium is carried on an alumina carrier is arranged in a succeeding stage on the downstream side. NO2 , after being converted into NO once, is converted into N2 .
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公开(公告)号：JPH09158810A
公开(公告)日：1997-06-17
申请号：JP7110896
申请日：1996-03-01
Applicant: HINO MOTORS LTD
Inventor： SUZUKI TAKASHI , SHIMOKAWA KIYOHIRO , YOKOTA HARUYUKI , KUDOU YUUGO , UCHIDA NOBORU , SHIMODA MASATOSHI , KAKEGAWA TOSHIAKI , TAKENAKA YOSHIHIDE , HIKINO SEIJI , SHIOZAKI CHUICHI , HOSOYA MITSURU , AOYANAGI YUZO
IPC: F01N3/20 , F02B1/12 , F02B3/06 , F02B23/02 , F02D19/08 , F02D41/30 , F02D41/38 , F02D41/40 , F02M25/07 , F02M31/04 , F02M31/08 , F02M43/04 , F02M45/02 , F02M45/04 , F02M47/00 , F02M47/02 , F02M59/36 , F02M61/14 , F02M63/02
Abstract: PROBLEM TO BE SOLVED: To suppress generation of NOx in order to carry out ignition/ combustion of lean mixture which is pre-mixed, and reduce the discharging rate of graphite and HC by providing with an injection device for carrying out main injection for injecting fuel into a combustion chamber, and an injection device according to the operating condition of an engine. SOLUTION: A supply pump 5 is arranged to supply fuel from a fuel tank 1 through a pre-filter sediment 2, a feed pump 3, and a fuel filter 4. The discharging port of the supply pump 5 is connected to a common rail 7 through a check valve 6. An injection nozzle 8 arranged on the combustion chamber of an engine is connected to the common rail 7 through a flow limiter 9, and thereby, an accumulator fuel injection device is constituted. In a controller 19, control signals are supplied to a solenoid spill valve 10 and a solenoid three way valve 13 on the basis of various kinds of control information so as to control fuel supplied from the injection nozzle most suitably. It is thus possible to suppress generation of NOx, and reduce the discharging rate of HC.
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公开(公告)号：JPH09112248A
公开(公告)日：1997-04-28
申请号：JP26696295
申请日：1995-10-16
Applicant: HINO MOTORS LTD , CHIYODA AUTOMOTIVE IND
Inventor： SHIMODA MASATOSHI , IGARASHI TATSUOKI , TANIZAWA TAKAO
Abstract: PROBLEM TO BE SOLVED: To reliably effectively and instantaneously back-wash and recondition the whole part of a particulate filter and not a part of it. SOLUTION: An impact air valve 10 is disposed in the downstream of a particulate filter 3 and shock wave from the impact air valve 10 blows down particles deposited on the particulate filter 3 in a particulate burning part 9 to burn them by the heat of a heater 8 in the particulate burning part 9.
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公开(公告)号：JPH09925A
公开(公告)日：1997-01-07
申请号：JP15658095
申请日：1995-06-23
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , HOSOYA MITSURU
IPC: B01D53/86 , B01D53/94 , B01J23/02 , B01J23/10 , B01J23/42 , B01J23/46 , B01J23/74 , B01J23/75 , B01J23/76 , B01J23/89 , B01J37/02
Abstract: PURPOSE: To obtain a catalyst capable of stably diminishing NOx in exhaust gas with high efficiency by wrapping a granular carrier made of Al2 O3 , ZrO2 or SiO2 with two or more layers of ceramics or metal oxides and specifying the temp. range in which each of the inner and outer ones of the two or more layers has catalytic activity. CONSTITUTION: A granular carrier made of Al2 O3 , ZrO2 or SiO2 is wrapped with two or more layers of ceramics or metal oxides. The inner one of the two or more layers is imparted with catalytic activity in the rage of 150-350 deg.C and the outer one is imparted with catalytic activity in the range of 300-600 deg.C. For example, a granular carrier 26 made of Al2 O3 , ZrO2 or SiO2 is wrapped with a 1st layer 21 of Al2 O3 , ZrO2 or SiO2 carrying Pt, a 2nd layer 22 of a metal oxide selected from among CeO2 , BaO and La2 O3 , a 3rd layer 23 of Al2 , ZrO2 or SiO2 carrying Rh or Ru and a 4th layer 24 of Al2 O3 , ZrO2 or SiO2 carrying Ce, Co, Ag, or Cu.
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