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公开(公告)号：JP2006070830A
公开(公告)日：2006-03-16
申请号：JP2004256461
申请日：2004-09-03
Applicant: Denso Corp , 株式会社デンソー
Inventor： ARAKAWA MIYAO
CPC classification number: Y02T10/125
Abstract: PROBLEM TO BE SOLVED: To provide an ignition device for an internal combustion engine improving combustion speed by generating electric discharge in a combustion chamber of the engine and promoting combustion. SOLUTION: This device is provided with a pulse superposition ignition power source 10 creating pulse voltage for generating pulse streamer in a combustion chamber 110 and outputting the pulse voltage as first pulse, a center electrode including one end part 21a having the first pulse input and another end part 21b generating pulse streamer between wall surfaces constricting the combustion chamber 110, and an ignition electrode 20 fixed on the engine 100 to expose another end part 21b of the center electrode in the combustion chamber 110. The first pulse is applied to anther end part 21b of the center electrode to reform air fuel mixture in a vicinity of another end part 21b and create hydrogen H 2 , and the hydrogen H 2 is formed as the pulse streamer between another end part 21b and the wall surface of the combustion chamber 110. Then air fuel mixture is burned. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种通过在发动机的燃烧室中产生放电并促进燃烧来提高燃烧速度的内燃机的点火装置。 解决方案：该装置设置有脉冲叠加点火电源10，产生用于在燃烧室110中产生脉冲串流器的脉冲电压并输出脉冲电压作为第一脉冲，中心电极包括具有第一脉冲的一个端部21a 输入端和另一端部21b，其在收缩燃烧室110的壁面和固定在发动机100上的点火电极20之间产生脉冲拖缆，以暴露燃烧室110中的中心电极的另一端部21b。将第一脉冲施加到 中心电极的花药端部21b，用于在另一端部21b附近改变空气燃料混合物，并产生氢H
2 ，形成氢H 2 另一端部21b与燃烧室110的壁面之间的脉冲拖缆。然后空气燃料混合物被燃烧。 版权所有（C）2006，JPO＆NCIPI -
公开(公告)号：JP2004275920A
公开(公告)日：2004-10-07
申请号：JP2003072282
申请日：2003-03-17
Applicant: Denso Corp , Toyota Central Res & Dev Lab Inc , 株式会社デンソー , 株式会社豊田中央研究所
Inventor： ITO YOSHIHIKO , UEDA MATSUE , SHINJO HIROBUMI , ARAKAWA MIYAO
Abstract: PROBLEM TO BE SOLVED: To provide an element for removing NO x and a NO x removing method reducing power consumption by making the element for removing NO x having a high diffusing capacity of an oxygen ion. SOLUTION: The element for removing NO x comprises a substrate 1 comprising a solid electrolyte, capable of retaining the oxygen ion in the inside of a bonding structure of atoms to each other and exhibiting a conductivity by movement of the oxygen ion itself by application of a voltage; and a positive electrode 3 and a negative electrode 2 formed on a surface of a substrate. The oxygen ion is drawn out from NO x in an atmosphere to reduce it to N 2 in the negative electrode 2, and the drawn out oxygen ion is released from the positive electrode 3 as oxygen. Since the movement of the oxygen ion in the substrate 1 is not the indirect movement through lattice defect but the direct movement of the oxygen ion itself, required energy is small. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2003269134A
公开(公告)日：2003-09-25
申请号：JP2002073824
申请日：2002-03-18
Applicant: TOYOTA CENTRAL RES & DEV , DENSO CORP
Inventor： UEDA MATSUE , ITO YOSHIHIKO , ARAKAWA MIYAO
IPC: F01N3/02 , B01D46/42 , B01D53/94 , B03C3/02 , B03C3/155 , B03C3/38 , B03C3/45 , B03C3/47 , B03C3/60
Abstract: PROBLEM TO BE SOLVED: To efficiently purify exhaust gas containing PM. SOLUTION: A reaction case 20 is provided with: a charging electrode 21 for electrically charging PM included in the exhaust gas outputted from an engine; a grounded electrode 22 for collecting and catching the charged PM; and a DPF 23 for catching the PM flowing out of the grounded electrode 22. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2002221027A
公开(公告)日：2002-08-09
申请号：JP2001017419
申请日：2001-01-25
Applicant: DENSO CORP
Inventor： ARAKAWA MIYAO
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine capable of efficiently purifying particulate pollutant (PM) and gaseous pollutants (NOx and the like) while controlling electric power consumption at an electric discharge part. SOLUTION: A surface of an insulating substrate 5 of the electric discharge part is covered by active substance 7 having effect of purifying exhaust gas. The active substance 7 receives heat generated at the insulating substrate 5 when electricity is discharged, temperature of the active substance 7 quickly rises and activation of the active substance 7 is promoted. The insulating substrate 5 has a function of a structure body keeping the active substance 7, and plasma or the active substance 7 purifies contaminants in exhaust gas. The device judges activation of the active substance 7 (oxidation catalyst) based on a signal from a temperature detection part 8 detecting temperature of the electric discharge part and turns off electricity from a high voltage power source generation device 4 to an electrode 3. Even if electricity to the electrode 3 is turned off, the oxidation catalyst purifies exhaust gas in place of plasma generated between the electrodes 3.
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公开(公告)号：JP2002213228A
公开(公告)日：2002-07-31
申请号：JP2001012180
申请日：2001-01-19
Applicant: DENSO CORP
Inventor： ARAKAWA MIYAO
IPC: G21F9/02 , B01D53/56 , B01D53/74 , B01D53/94 , B01J19/08 , F01N3/02 , F01N3/08 , F01N3/24 , H05H1/46
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine formed that the discharge part and the duct collection part 7 of the exhaust emission control device are separately situated to stabilize discharge at the discharge part and the control efficiency of exhaust gas can be improved. SOLUTION: The discharge part 30 and a dust collection part 70 are situated separately into the upper stream side and the downstream side of a flow passage 6, a distance between electrodes 3 can be arbitrarily set to stabilize discharge. The dust collection part 70 consists of a conductive material 7 having a plurality of gap-form spaces through which exhaust gas passes and is fixed at an earth electric potential. By electrifying PM by the discharge part 30, PM is attracted to the surface of the conductive material 7 for trapping. In purification of a gaseous pollutant (NOx), in the discharge part 30 and the dust collection part 70 carrying a catalyst, radical and active gas generated from the discharge part 30 are brought into contact with exhaust gas for purification.
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Patent Agency Ranking
公开(公告)号：JP2001193442A
公开(公告)日：2001-07-17
申请号：JP2000006228
申请日：2000-01-12
Applicant: DENSO CORP
Inventor： ARAKAWA MIYAO
Abstract: PROBLEM TO BE SOLVED: To enable efficient exhaust emission control by using electric discharge. SOLUTION: Insulating substrate 16, 17 are arranged in parallel with a prescribed space, a flow path 15 for exhaust gas is formed between each insulating substrate 16, 17, also coating of a catalyst is applied to a surface of each insulating substrate 16, 17. Each flow path 15 is provided with by mixing a part (discharge part A generating discharge) counter posing discharge electrodes 18, 19 embedded in the insulating substrates 16, 17 and a nondischarge part B generating no discharge. Since a purifying window of the discharge part A exists in a region of temperature which is lower than that of a purifying window of the nondischarge part B (catalyst), exhaust gas is purified mainly in the discharge part A in a spot of temperature lower than the purifying window of the nondischarge part B, on the contrary, exhaust gas is purified mainly in the nondischarge part B in a spot of temperature higher than the purifying window of the discharge part A. In this way, in whatever way the distribution of temperature may change in this exhaust gas purifier device 11, the exhaust gas can be purified in either one of the discharge part A or the nondischarge part B.
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公开(公告)号：JP2001046910A
公开(公告)日：2001-02-20
申请号：JP22203099
申请日：1999-08-05
Applicant: DENSO CORP
Inventor： KATSUTA HIROYUKI , ARAKAWA MIYAO , SUGIE NOBUHIKO
Abstract: PROBLEM TO BE SOLVED: To improve the electric power controlling method for a discharge type exhaust emission control device. SOLUTION: In this exhaust emission control device, the exhaust gas of an internal combustion engine is purified by passing to a flow passage formed between at least a pair of discharge electrodes and applying AC high voltage between the discharge electrodes. In the device, all of pulse of the AC high voltage are applied between the discharge electrodes in high loading where an exhaust gas flow rate is maximum. In middle/low loading where the exhaust gas flow rate is lower than that of high loading, the pulse of the AC high voltage is intermittently thinned out in accordance with the exhaust gas flow rate. In such a way, power supply is lowered in accordance with the exhaust gas flow rate without lowering the applied voltage (discharge capacity) between the discharge electrodes. In the case when the exhaust gas flow rate is low, not only the probability that the exhaust gas meets with the discharge but also the exhaust gas purifying efficiency are not changed so much even if the generating ratio of the discharge is lowered by thinning out the pulse of the AC high voltage since the flow velocity of the exhaust gas passing between the discharge electrodes is lowered.
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公开(公告)号：JP2011085086A
公开(公告)日：2011-04-28
申请号：JP2009239227
申请日：2009-10-16
Applicant: Denso Corp , 株式会社デンソー
Inventor： ARAKAWA MIYAO
IPC: F01N3/08
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of suppressing the lowering of an exhaust gas temperature and securing the purification performance of the exhaust gas while cooling an active material forming part. SOLUTION: Air to be supplied to an electrode 23 from an air supply part 13 cools an attachment part 21 and is heated by the heat of the attachment part 21 when passing through a cooling passage 32 formed at the attachment part 21. Consequently, the air to be supplied to the electrode 23 is mixed to exhaust gas after a temperature is raised at the attachment part 21. Then, surplus air delivered from a pump 31 is discharged to a downstream side of a catalyst 16 in an exhaust gas passage 15 through an abandonment passage 35 branched off from a cooling passage 32. Consequently, the supply of excessive air to the exhaust gas passage 15 from the cooling passage 32 is avoided. As a result, the lowering of a temperature of exhaust gas flowing in the exhaust gas passage 15 is suppressed even if air to be used for cooling the air supply part 13 is mixed in the exhaust gas. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 解决的问题：提供一种排气排放控制装置，其能够抑制排气温度的降低，并确保排气的净化性能同时冷却活性物质形成部件。 解决方案：从空气供应部分13供应到电极23的空气冷却安装部分21，并且当通过形成在安装部分21的冷却通道32时被安装部分21的热量加热。结果 在安装部21的温度升高之后，供给电极23的空气与排气混合。然后，从泵31输送的多余空气排出到排气通路中的催化剂16的下游侧 通过从冷却通道32分出的废弃通道35，可以避免从冷却通道32向废气通道15供给过多的空气。 结果，即使用于冷却供气部13的空气在排气中混合，也能够抑制在排气通路15中流动的废气的温度的降低。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：JP2009281154A
公开(公告)日：2009-12-03
申请号：JP2008131120
申请日：2008-05-19
Applicant: Denso Corp , 株式会社デンソー
Inventor： ARAKAWA MIYAO , KUROYANAGI MASATOSHI , NISHIJIMA YOSHIAKI
CPC classification number: F01N3/2066 , F01N3/0892 , F01N13/009 , F01N2240/04 , F01N2240/28 , F01N2570/145 , F01N2610/02 , Y02A50/2344 , Y02C20/10 , Y02T10/24
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust gas treatment device capable of reducing an amount of N 2 O in exhaust gas irrespective of the temperature of the exhaust gas. SOLUTION: The exhaust gas discharged from a combustion chamber 3 of an engine 2 flows through an exhaust path 21 of an exhaust pipe 20. A NOx reduction catalyst 30 for reducing NOx in the exhaust gas and a corona discharge device 40 are arranged in the exhaust path 21. The corona discharge device is disposed on the downstream side of the NOx reduction catalyst 30 along the flow of the exhaust gas and can oxidize N 2 O in the exhaust gas irrespective of the temperature of the exhaust gas. Thus, in the case that N 2 O is generated in the exhaust gas when reducing NOx by the NOx reduction catalyst 30, it is possible to oxidize N 2 O and change it into NO or NO 2 by the corona discharge device 40 arranged on the downstream side of the NOx reduction catalyst 30. Therefore, the amount of N 2 O in the exhaust gas can be reduced irrespective of the temperature of the exhaust gas. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：提供一种废气处理装置，其能够减少排气中的N
2 O的量，而与废气的温度无关。 解决方案：从发动机2的燃烧室3排出的废气流经排气管20的排气路21。排出用于还原NOx的NOx还原催化剂30和电晕放电装置40 排气路径21.电晕放电装置沿着排气的流动配置在NOx还原催化剂30的下游侧，能够在排气中氧化N 2 O而不管温度如何 的废气。 因此，在通过NOx还原催化剂30还原NOx时，在废气中产生N 2 SB 2的情况下，可以氧化N 2 SB 2 O并将其改变 通过设置在NOx还原催化剂30的下游侧的电晕放电装置40，成为NO或NO 2 。因此，废气中的N 2 O的量可以 与废气的温度无关地减少。 版权所有（C）2010，JPO＆INPIT -
公开(公告)号：JP2007309213A
公开(公告)日：2007-11-29
申请号：JP2006139083
申请日：2006-05-18
Applicant: Denso Corp , 株式会社デンソー
Inventor： MOTOE YUSUKE , ARAKAWA MIYAO
IPC: F02M33/00
Abstract: PROBLEM TO BE SOLVED: To provide an oxygen enriching device of a good mounting property improving engine torque by accurately controlling oxygen concentration of intake air mixed in an engine intake passage by a simple method without using a tank for storing oxygen in oxygen enriching device supplying air of high oxygen concentration to the engine intake air passage.
SOLUTION: In the oxygen enriching device 10 provided in parallel with the engine intake air passage 51, oxygen enriched air formed by a zeolite separation film 1 is stored to or discharged from an oxygen storage part 3 composed of an oxygen adsorption part 6 and a heat exchanger 7 based on an operation condition and data of oxygen concentration of mixed intake air detected by an O2 sensor 5, and opening of an oxygen supply valve 4 is controlled by ECU 8 to mix with normal air in an intake air path 51 to form mixed intake air.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：通过简单的方法，通过精确地控制混合在发动机进气通道中的进气的氧浓度来提供具有良好的安装性能来提高发动机扭矩的富氧装置，而不使用用于在富氧中储存氧气的罐 向发动机进气通道供给高氧浓度的空气的装置。 解决方案：在与发动机进气通道51平行设置的富氧装置10中，由沸石分离膜1形成的富氧空气被储存在由氧吸附部6 并且基于操作条件和由O 2传感器5检测的混合进气的氧浓度的数据和供氧阀4的打开的热交换器7由ECU 8控制，以与进气通道51中的普通空气混合 以形成混合进气。 版权所有（C）2008，JPO＆INPIT
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