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1. 发明专利

JP2012067667A Exhaust gas control apparatus and control method for the same 有权
标题翻译：排气控制装置及其控制方法
公开(公告)号：JP2012067667A
公开(公告)日：2012-04-05
申请号：JP2010212866
申请日：2010-09-22
申请人： Denso Corp , Toyota Central R&D Labs Inc , Toyota Industries Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社デンソー , 株式会社豊田中央研究所 , 株式会社豊田自動織機
发明人： HIROTA SHINYA , TOSHIOKA TOSHISUKE , KENJO AKIRA , FUKUDA KOICHIRO , HIBINO RYOICHI , UEDA MATSUE , ASANO AKIHIKO , YAMAUCHI TAKASHI , SHICHI AKIRA , KOIKE MAKOTO , MARUYAMA MASATOSHI , SAKATA MASAKAZU , HOSHI SAKUTARO , ENDO YASUSHI
IPC分类号： F01N3/08 , F01N3/24 , F01N3/28
CPC分类号： F01N3/08 , F01N3/208 , F01N2560/026 , F01N2560/06 , F01N2610/02 , F01N2610/146 , F01N2900/0406 , F01N2900/1402 , F01N2900/1602 , F01N2900/1616 , F01N2900/1622 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To restrain the occurrence of an ammonia slip, while enhancing the NOx reduction ratio, in an NOx reduction catalyst for reducing and removing NOx in exhaust gas by adsorbing ammonia.SOLUTION: An exhaust gas control apparatus includes a control means for controlling a urea addition valve for adding urea from the upstream side of the NOx reduction catalyst. The control means obtains the ammonia adsorption amount distribution in the NOx reduction catalyst, and controls the urea addition valve to stop or reduce a supply amount of the urea when an ammonia adsorption amount in a predetermined part on the exhaust gas flow direction downstream side equals or exceeds a predetermined threshold in the obtained adsorption amount distribution. The urea addition valve is controlled based on the adsorption amount distribution obtained by a model of dividing the inside of the NOx reduction catalyst into a plurality of cells so that the ammonia adsorption amount in a first cell positioned furthest upstream equals or exceeds a predetermined threshold close to a saturation adsorption amount and the ammonia adsorption amount in a second cell positioned downstream of the first cell reaches a predetermined target value smaller than the threshold.
摘要翻译：要解决的问题：为了通过吸附氨来抑制排气中的NOx还原和除去的NOx还原催化剂中，在提高NOx还原率的同时，抑制氨滑移的发生。解决方案：排气控制装置包括控制装置，用于控制用于从NOx还原催化剂的上游侧添加尿素的尿素添加阀。控制装置获得NOx还原催化剂中的氨吸附量分布，并且当排气流动方向下游侧的预定部分中的氨吸附量等于或等于或等于或等于在所获得的吸附量分布中超过预定阈值。基于通过将NOx还原催化剂的内部分成多个单元的模型获得的吸附量分布来控制尿素添加阀，使得位于最上游的第一单元中的氨吸附量等于或超过预定阈值关闭达到饱和吸附量，并且位于第一电池下游的第二电池中的氨吸附量达到小于阈值的预定目标值。版权所有（C）2012，JPO＆INPIT

2. 发明专利

JP2011241686A Exhaust emission control device of internal combustion engine 有权
标题翻译：内燃机排气控制装置
公开(公告)号：JP2011241686A
公开(公告)日：2011-12-01
申请号：JP2010111921
申请日：2010-05-14
申请人： Denso Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社デンソー
发明人： FUKUDA KOICHIRO , HIROTA SHINYA , TOSHIOKA TOSHISUKE , URUSHIBARA HIDEHIRO , MARUYAMA MASATOSHI , SAKATA MASAKAZU
IPC分类号： F01N3/08 , B01D53/94
摘要： PROBLEM TO BE SOLVED: To provide a technique compatibly attaining keeping of a high NOx purification rate with a selective reduction type NOx catalyst and NHslip suppression in an exhaust emission control device of an internal combustion engine.SOLUTION: A NOx purification rate of an SCR (Selective Catalytic Reduction) catalyst 3 is calculated, an estimated adsorption amount of NHadsorbed to the SCR catalyst 3 is calculated based on the calculated NOx purification rate, and when the calculated estimated adsorption amount is equal to or lower than a prescribed amount as a threshold indicating whether a fixed NOx purification rate or more can be attained and slip of NHfrom the SCR catalyst 3 can be suppressed in all operation states of the internal combustion engine 1, a predetermined amount of urea water is added from a urea water adding valve 4, and when the estimated adsorption amount exceeds the prescribed amount, urea water whose defined amount is further reduced as the estimated adsorption amount is larger is added from the urea water adding valve 4.
摘要翻译：要解决的问题：为了提供兼容地使用选择还原型NOx催化剂保持高NO x净化率的技术和废气排放控制中的NH 3 滑移抑制内燃机装置解决方案：计算SCR（选择性催化还原）催化剂3的NOx净化率，基于SCR催化剂3吸附的NH 3 的估计吸附量基于关于计算出的NOx净化率，并且当计算出的估计吸附量等于或低于作为指示是否可以获得固定的NOx净化率等于或更高的阈值的规定量时，并且NH 的滑动在内燃机1的所有运转状态下，可以抑制来自SCR催化剂3的3 ，从尿素水添加阀4添加规定量的尿素水，当估计吸附量超过规定量时从尿素水添加阀4添加限定量进一步减小的尿素水，其中所述尿素水的估计吸附量较大。（C）2012，JPO＆INPIT

3. 发明专利

JP2010248963A Exhaust emission control device for internal combustion engine 有权
标题翻译：用于内燃机的排气排放控制装置
公开(公告)号：JP2010248963A
公开(公告)日：2010-11-04
申请号：JP2009097886
申请日：2009-04-14
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： SHIMOMURA OSAMU , SAKATA MASAKAZU , MARUYAMA MASATOSHI , TOCHIKAWA KAZUHARU
IPC分类号： F01N3/18 , F01N3/08 , F01N3/20
CPC分类号： F01N3/208 , F01N11/00 , F01N2560/026 , F01N2570/10 , F01N2610/02 , F01N2900/1622 , Y02T10/24 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To inhibit discharge of NOx and a reducing agent at abnormality diagnosis based on a variation in the amount of reducing agent addition. SOLUTION: An engine 10 includes, as an exhaust emission control system, an SCR catalyst 13 provided in an exhaust passage, adsorbing ammonia and selectively eliminating NOx in exhaust gas by the ammonia, an NOx sensor 18 provided on a downstream side of the SCR catalyst 13, and an urea water addition valve 15 provided on the exhaust upstream side of the SCR catalyst 13. An ECU 40 varies an urea water addition amount from the urea water addition valve 15 and performs abnormality diagnosis based a detection result of the NOx sensor 18 at the variation of the urea water addition amount. For the abnormality diagnosis, the ECU 40 sets a first condition that the NOx detection result by the NOx sensor 18 shows NOx excess, sets a second condition that an erroneous diagnosis factor is not caused by ammonia adsorption of the SCR catalyst 13 and performs the abnormality diagnosis when both the conditions are met. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：基于还原剂添加量的变化，抑制异常诊断时的NOx和还原剂的排出。解决方案：发动机10包括设置在排气通道中的SCR催化剂13作为废气排放控制系统，吸附氨并选择性地消除氨中的废气中的NOx，设置在排气通道的下游侧的NOx传感器18 SCR催化剂13和设置在SCR催化剂13的排气上游侧的尿素水添加阀15.ECU 40根据尿素水添加阀15改变尿素水的添加量，并根据该检测结果进行异常诊断 NO x传感器18，尿素水添加量的变化。对于异常诊断，ECU40设定由NOx传感器18的NOx检测结果显示NOx过剩的第一条件，设定SCR催化剂13的氨吸附不引起误诊断因素的第二条件，并进行异常当两者都符合条件时进行诊断。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2010121478A Exhaust emission control device and exhaust emission control system for internal combustion engine 审中-公开
标题翻译：用于内燃机的排气排放控制装置和排气控制系统
公开(公告)号：JP2010121478A
公开(公告)日：2010-06-03
申请号：JP2008294029
申请日：2008-11-18
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： FUJITA TATSUYA , MARUYAMA MASATOSHI
IPC分类号： F01N3/08 , B01D53/94 , F01N3/24
CPC分类号： F01N3/208 , F01N3/106 , F01N13/009 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/02 , F01N2610/146 , F01N2900/1402 , F01N2900/1622 , F02D41/0245 , F02D41/027 , F02D41/08 , F02D41/1446 , F02D41/405 , F02D2041/1433 , Y02A50/2325 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To solve such a problem that deposit caused by urea addition is accumulated on an inner wall of an exhaust gas passage 40 at low temperature and that controllability of ammonia supplied to urea SCR 52 deteriorates due to decomposition of the deposit at high temperature.
SOLUTION: If it is determined that accumulation quantity of deposit on an inner wall of an exhaust passage 40 is not less than a predetermined value, addition quantity of urea solution from a urea solution addition valve 62 is decreased. Thereafter, exhaust gas temperature is increased rapidly when request torque of a diesel engine 10 increases. Thus, the deposit having accumulated on the inner wall of the exhaust passage 40 is decomposed at once and is supplied to a urea SCR 52 as ammonia.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题为了解决在低温下在排气通路40的内壁上蓄积由尿素添加引起的沉积的问题，并且由于分解导致的尿素SCR 52的氨的可控性恶化，在高温下沉积。解决方案：如果确定排气通道40的内壁上的沉积积累量不小于预定值，则来自尿素溶液添加阀62的尿素溶液的添加量减少。此后，当柴油发动机10的要求扭矩增加时，废气温度快速上升。因此，积聚在排气通道40的内壁上的沉积物立即分解并作为氨供应到尿素SCR 52。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2009293513A Exhaust emission control device for internal combustion engine 有权
标题翻译：用于内燃机的排气排放控制装置
公开(公告)号：JP2009293513A
公开(公告)日：2009-12-17
申请号：JP2008147854
申请日：2008-06-05
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： FUJITA TATSUYA , MARUYAMA MASATOSHI
IPC分类号： F01N3/08 , B01D53/94 , F01N3/28 , F01N3/36
CPC分类号： F01N3/208 , F01N2610/02 , F01N2900/0408 , F01N2900/1602 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To improve a NOx purification rate adding a suitable reducing agent while suppressing the influence on an internal combustion engine. SOLUTION: An SCR catalyst 42 is provided in an exhaust pipe 22 of an engine, and a urea water adding valve 44 is provided upstream. Urea water is supplied by pressurization by a urea water pump 53 to the urea water adding valve 44. In an ECU 60, a temperature of the SCR catalyst 42 is detected, and a urea water pressure pressurized by the urea water pump 53 based on the SCR catalyst is changed based on the SCR catalyst temperature. At this time, if the SCR catalyst temperature is in a predetermined low temperature region, the urea water pressure is raised, and an atomization particle size of the urea water to be added from the urea water adding valve 44 is changed. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提高添加合适的还原剂的NO x净化率，同时抑制对内燃机的影响。解决方案：SCR催化剂42设置在发动机的排气管22中，尿素水添加阀44设置在上游。尿素水通过尿素水泵53向尿素水添加阀44加压供给。在ECU60中，检测SCR催化剂42的温度，并且基于尿素水泵53对尿素水泵53加压的尿素水压 SCR催化剂基于SCR催化剂温度而改变。此时，如果SCR催化剂温度处于预定的低温区域，则尿素水压升高，并且从尿素水添加阀44添加的尿素水的雾化粒径发生变化。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009115032A Exhaust gas purifying apparatus for internal combustion engine 审中-公开
标题翻译：用于内燃机的排气净化装置
公开(公告)号：JP2009115032A
公开(公告)日：2009-05-28
申请号：JP2007290828
申请日：2007-11-08
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： FUJITA TATSUYA , MARUYAMA MASATOSHI
IPC分类号： F01N3/08 , F01N3/28 , F02D35/00 , G01N27/416 , G01N27/419
CPC分类号： F01N3/208 , F01N3/0814 , F01N2560/026 , F01N2570/18 , F01N2610/02 , F01N2610/146 , F01N2900/0408 , F01N2900/14 , F02B37/00 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas purifying apparatus for internal combustion engine which can accurately detect NOx quantity in the downstream side of an NOx-purifying catalyst and can fairly calculate an NOx purification rate or the like, by extension. SOLUTION: An exhaust pipe 22 is provided with an oxidation catalyst 41, an SCR catalyst 42 and an ammonia slip catalyst 43 in sequence from its upstream side. In the exhaust pipe 22, the urea water-adding valve 44 is provided between the oxidation catalyst 41 and the SCR catalyst 42. A NOx sensor 47 which detects the NOx quantity in the exhaust gas is provided downstream of the SCR catalyst 42 regarding the exhaust after passing through the SCR catalyst. An ECU 50 controls the urea water-adding valve 44 to add the urea water to the exhaust gas while changing the urea water adding amount so as to be different from each other. While the urea water is added, the ECU successively obtains an output of the NOx sensor 47 in each adding amount, and computes an adding amount command value in which the sensor output becomes minimum. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决问题的方案：提供一种能够精确地检测NOx净化催化剂的下游侧的NOx量的内燃机的排气净化装置，能够适当地计算NOx净化率等。解决方案：排气管22从其上游侧依次设有氧化催化剂41，SCR催化剂42和氨滑移催化剂43。在排气管22中，在氧化催化剂41和SCR催化剂42之间设有尿素加水阀44.检测排气中的NOx量的NOx传感器47设置在SCR催化剂42的排气侧在通过SCR催化剂之后。 ECU50控制尿素加水阀44，在将尿素水添加量变更为不同的同时，将尿素水添加到排气中。在添加尿素水的情况下，ECU以各添加量连续地获得NOx传感器47的输出，并计算传感器输出变为最小的相加量指令值。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2012172551A Fuel injection device 有权
标题翻译：燃油喷射装置
公开(公告)号：JP2012172551A
公开(公告)日：2012-09-10
申请号：JP2011033538
申请日：2011-02-18
申请人： Denso Corp , 株式会社デンソー
发明人： MARUYAMA MASATOSHI
IPC分类号： F02M59/36 , F02D45/00
CPC分类号： F02D41/3845 , F02D2200/0602 , F02D2200/0604 , F02D2200/101 , F02M59/366 , F02M63/025
摘要： PROBLEM TO BE SOLVED: To detect the discharge pressure of a high pressure pump (fuel pressure at a discharge port) more accurately than before.SOLUTION: A pressure Psens detected by a pressure sensor is corrected by using a pressure change amount ΔP corresponding to the change amount ΔQ of the fuel in a common rail within the pressure change considering time Tp, and discharge pressure Ptop is calculated. This allows the detection of the discharge pressure of the high pressure pump 3 (fuel pressure at the discharge port) accurately even in the case that there is a detection error resulting from pressure propagation. The pressure change considering time Tp signifies the sum of T1 and T2 where T1 is a time having passed from Psens being detected to the start of the calculation while T2 is a time required for the pressure propagated from the discharge port of the pump 3 to the pressure sensor 10.
摘要翻译：要解决的问题：比以前更精确地检测高压泵的排出压力（排出口处的燃料压力）。解决方案：通过使用与压力变化考虑时间Tp内的共轨中的燃料的变化量ΔQ相对应的压力变化量ΔP来校正由压力传感器检测的压力Psens，并且计算排出压力Ptop。即使在存在由压力传播引起的检测误差的情况下，也能够精确地检测高压泵3的排出压力（排出口处的燃料压力）。考虑时间Tp的压力变化表示T1和T2的和，其中T1是从被检测的Psens到计算开始的时间，而T2是从泵3的排出口传播到压力的压力所需的时间压力传感器10.版权所有（C）2012，JPO＆INPIT

8. 发明专利

JP2009293444A Exhaust emission control device for internal combustion engine 有权
标题翻译：用于内燃机的排气排放控制装置
公开(公告)号：JP2009293444A
公开(公告)日：2009-12-17
申请号：JP2008146086
申请日：2008-06-03
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： SHIMOMURA OSAMU , SAKATA MASAKAZU , MARUYAMA MASATOSHI
IPC分类号： F01N3/08 , B01D53/94
CPC分类号： F01N3/208 , F01N2560/026 , F01N2560/06 , F01N2610/02 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To execute suitable elimination of NOx with NOx catalyst by suitably executing reducer adding control. SOLUTION: SCR catalyst 13 is provided in an exhaust pipe 11 of an engine, and an urea water addition valve 15 is provided at an upstream side thereof. ECU 40 calculates ammonia adsorption quantity of the SCR catalyst 13 and controls urea water addition quantity by the urea water addition valve 15 based on the ammonia adsorption quantity. The EUC 40 acquires temperature of the SCR catalyst 13 and temperature information relating the same by measurement or estimation, and changes over execution style of urea water addition control based on the catalyst temperature or the temperature information. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过适当地执行减速器添加控制，通过NOx催化剂来执行NOx的适当消除。解决方案：SCR催化剂13设置在发动机的排气管11中，并且在其上游侧设置有尿素水添加阀15。 ECU40计算SCR催化剂13的氨吸附量，并且基于氨吸附量控制尿素水添加阀15的尿素水添加量。 EUC40通过测量或估计获得SCR催化剂13的温度和与其相关的温度信息，并且基于催化剂温度或温度信息改变执行方式的尿素水添加控制。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2008151088A Exhaust emission control device 有权
标题翻译：排气排放控制装置
公开(公告)号：JP2008151088A
公开(公告)日：2008-07-03
申请号：JP2006342319
申请日：2006-12-20
申请人： Denso Corp , 株式会社デンソー
发明人： MARUYAMA MASATOSHI , OSHIMA KEIJI
IPC分类号： F01N3/36 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/24 , F02M61/14
CPC分类号： F01N3/2066 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control device equipped with an additive injection valve in an exhaust pipe with a bent part wherein exhaust gas is uniformly mixed with an additive while achieving reduction in heat and can reach a catalyst.
SOLUTION: A bent pipe 12 is connected to the upstream side of an SCR catalyst through a straight pipe. A protrusion 14 protruding to a side opposite from the straight pipe is provided on the bent pipe 12, and the additive injection valve 50 is stored and arranged in an end face 18 of the protrusion 14 so that a center line of the straight line coincides with an axis. A spray angle θ or a protruding distance L of the protrusion 14 is adjusted so that a conical spray F of the injection valve 50 is not adhered to an exhaust gas downstream side end part 15 in a connection opening end of the protrusion 14 with the bent pipe 12.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种在具有弯曲部分的排气管中配备有添加剂注入阀的废气排放控制装置，其中排气与添加剂均匀混合，同时实现热量的降低并且可以达到催化剂。解决方案：弯管12通过直管连接到SCR催化剂的上游侧。在弯曲管12上设置有与直管相反一侧突出的突起部14，并且，在突出部14的端面18上收纳配置着添加剂注入阀50，使直线的中心线与一个轴。调整突起14的喷射角θ或突出距离L，使得喷射阀50的锥形喷雾F不与突起14的连接开口端中的废气下游侧端部15附接，弯曲管道12.版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2008202434A Reducer supply device 审中-公开
标题翻译：减速器供应装置
公开(公告)号：JP2008202434A
公开(公告)日：2008-09-04
申请号：JP2007036859
申请日：2007-02-16
申请人： Denso Corp , 株式会社デンソー
发明人： MATSUYAMA AKIHIRO , SUZUKI KAZUNORI , NAKAGAWA HIRONARI , MARUYAMA MASATOSHI
IPC分类号： F01N3/36 , B01D53/94 , F01N9/00
CPC分类号： F01N3/36 , F01N3/208 , F01N2610/14 , F01N2610/1406 , F01N2900/1808 , F01N2900/1811 , F01N2900/1814 , Y02A50/2325 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To prevent breakage of a supply pump 3 due to freezing of reducer by preventing the reducer from remaining and freezing in the supply pump 3 after stop of an engine in a reducer supply device 1.
SOLUTION: The reducer supply device 1 is provided with an air pump 21 blasting air to the first gas phase part 20, a first valve device 22 opening and closing the first gas phase part 20 to and from atmosphere, a liquid level detection sensor 25 provided at an equivalent position with a suction port 17 of the supply pump 3 and installed on the first tank 14. Consequently, first liquid level 28 can be lowered to extract reducer from the supply pump 3 by starting an air pump 21 to pressurize the first gas phase part 20 when the engine stops and supply of the reducer becomes unnecessary. Consequently, breakage of the supply pump 3 due to freezing of the reducer can be prevented by preventing the reducer from remaining and freezing in the supply pump 3 after engine stop.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了防止在还原剂供应装置1中的发动机停止之后防止减速器在供给泵3中残留和冻结，由于减速器的冻结导致供给泵3的破裂。解决方案减速器供给装置1具备向第一气相部20喷射空气的空气泵21，向大气开放第一气相部20的第一阀装置22，设置在第一气相部20的液面检测传感器25 具有供给泵3的吸入口17的等效位置，并且安装在第一罐14上。因此，可以降低第一液位28，通过启动空气泵21将第一气相加压，从供给泵3抽出减速器当发动机停止并且减速器的供给变得不必要时，第20部分是不必要的。因此，通过在发动机停止之后防止减速器在供给泵3中残留和冻结，可以防止由于减速器的冻结引起的供给泵3的破损。版权所有（C）2008，JPO＆INPIT

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