-
公开(公告)号：US20170037802A1
公开(公告)日：2017-02-09
申请号：US15227121
申请日：2016-08-03
发明人： Yukihiro OKABE , Tatsuya TAHARA
CPC分类号： F02D41/0295 , F01N3/0814 , F01N3/0864 , F01N9/00 , F01N13/008 , F01N2570/16 , F02D41/126 , F02D41/1441 , F02D41/1453 , F02D41/1455 , F02D41/1456 , F02D41/1475 , F02D41/3005 , F02D2041/147
摘要： An air-fuel ratio control device switches a target air-fuel ratio from a lean set air-fuel ratio to a rich set air-fuel ratio after judging that an air-fuel ratio of an outflowing exhaust gas has become a stoichiometric air-fuel ratio and an oxygen storage amount of an exhaust purification catalyst has become a switching reference storage amount, and makes an average value of the target air-fuel ratio the stoichiometric air-fuel ratio to less than the lean set air-fuel ratio, from after the estimated value of the oxygen storage amount has become the switching reference storage amount or more until judging that the air-fuel ratio of the outflowing exhaust gas has become the stoichiometric air-fuel ratio if the estimated value of the oxygen storage amount becomes the switching reference storage amount or more before judging that the air-fuel ratio of the outflowing exhaust gas has become the stoichiometric air-fuel ratio.
摘要翻译： 空燃比控制装置在判定出流出废气的空燃比成为理论空燃比后，将目标空燃比从稀空燃比转换为浓空燃比 比例和排气净化催化剂的氧气存储量已经成为切换基准存储量，并且使理论空燃比的平均值从理论空燃比小于稀空燃比 如果氧气储存量的估计值变为切换，则判断出流出废气的空燃比变为理论空燃比为止，则氧储存量的推定值成为切换基准保持量以上 在判断出流出废气的空燃比变为理论空燃比之前，参考存储量以上。
-
2.发明申请METHODS AND SYSTEMS FOR ESTIMATING EXHAUST PRESSURE WITH A VARIABLE VOLTAGE OXYGEN SENSOR 有权用可变电压氧传感器估算排气压力的方法和系统公开(公告)号：US20160258371A1
公开(公告)日：2016-09-08
申请号：US14637060
申请日：2015-03-03
CPC分类号： F02D41/145 , F02D21/08 , F02D35/0015 , F02D41/0007 , F02D41/0025 , F02D41/0235 , F02D41/029 , F02D41/123 , F02D41/1402 , F02D41/1448 , F02D41/1455 , F02D41/1456 , F02D41/26 , F02D41/3011 , F02D41/3094 , F02D2041/001 , F02D2041/1433 , F02D2200/0404 , F02D2200/0406 , F02D2200/0414 , F02D2200/0418 , F02D2200/0612 , F02D2200/0802 , F02D2200/1002 , F02D2200/101 , F02D2200/501 , F02M26/47 , G01M15/104
摘要： Methods and systems are provided for estimating an engine exhaust pressure based on outputs from an exhaust oxygen sensor. In one example, a method may include estimating an exhaust pressure of exhaust gas flowing through an engine exhaust passage based on a difference between a first output of an oxygen sensor disposed in the exhaust passage and a second output of the oxygen sensor and then adjusting engine operation based on the estimated exhaust pressure. As one example, both the first and second outputs may be taken while operating the sensor in a variable voltage mode, after increasing a reference voltage of the oxygen sensor from a lower, first voltage to a higher, second voltage.
摘要翻译： 提供了用于基于来自排气氧传感器的输出来估计发动机排气压力的方法和系统。 在一个示例中，方法可以包括基于设置在排气通道中的氧传感器的第一输出和氧传感器的第二输出之间的差异来估计流过发动机排气通道的废气的排气压力，然后调整发动机 基于估计的排气压力进行操作。 作为一个示例，在将氧传感器的参考电压从较低的第一电压增加到较高的第二电压之后，可以在以可变电压模式操作传感器的同时采取第一和第二输出。
-
公开(公告)号：US09291526B2
公开(公告)日：2016-03-22
申请号：US14073200
申请日：2013-11-06
发明人： Ken Ervin Fosaaen
IPC分类号： F02D41/14 , G01M15/10 , F02D41/24 , G01N27/406
CPC分类号： G01M15/104 , F01N11/007 , F01N2560/025 , F01N2560/20 , F02D41/1445 , F02D41/1446 , F02D41/1455 , F02D41/1458 , F02D41/2416 , F02D41/2438 , G01N27/4065 , G01N33/0016 , G01N33/0036 , H05K999/99
摘要： A method of controlling an engine to help achieve a target air:fuel ratio based on data from an oxygen sensor, and related systems. At least one engine operating parameter and a sensed oxygen level are determined at two or more points in one of a rich and lean region based on data from the oxygen sensor. This information is used to help control engine operation in the other of the rich and lean regions without using directly sensed oxygen level data from that region. Thus, a control paradigm is developed in a first operating region based on oxygen level data from the oxygen sensor, and then used for control in a different second operating region without direct sensed oxygen level data in that second operating region. In some embodiments, the control paradigm may be adaptive based on changing conditions.
摘要翻译： 一种控制发动机以帮助实现基于来自氧传感器的数据和相关系统的目标空气：燃料比的方法。 基于来自氧传感器的数据，在富区和贫区之一上的两个或多个点处确定至少一个发动机操作参数和感测氧水平。 该信息用于帮助控制另一个富集区域和贫困地区的发动机运行，而无需使用该区域的直接感测氧气水平数据。 因此，基于来自氧传感器的氧水平数据，在第一操作区域中开发控制范例，然后在不同的第二操作区域中用于控制，而在第二操作区域中没有直接感测的氧气水平数据。 在一些实施例中，控制范例可以基于变化的条件来适应。
-
公开(公告)号：US20160003181A1
公开(公告)日：2016-01-07
申请号：US14769956
申请日：2014-01-21
申请人： Masahide OKADA , Masashi HAKARIYA , Yoshifumi MATSUDA , Yoshihisa ODA , Hiroaki TSUJI , Tokiji ITO , Isao NAKAJIMA , Toshihiro KATO , Yuya YOSHIKAWA
发明人： Masahide OKADA , Masashi HAKARIYA , Yoshifumi MATSUDA , Yoshihisa ODA , Hiroaki TSUJI , Tokiji ITO , Isao NAKAJIMA , Toshihiro KATO , Yuya YOSHIKAWA
CPC分类号： F02D41/1495 , F02D41/1441 , F02D41/1454 , F02D41/1455 , F02D41/1456 , F02D41/1475 , F02D41/222 , F02D41/30 , Y02T10/40
摘要： A control device of an internal combustion engine according to the present invention executes air-fuel ratio control based on an output of an air-fuel ratio sensor provided at an upstream side of a catalyst, with correction based on an output of an oxygen sensor at a downstream side of the catalyst. When it is determined that a degree of an output tendency in a predetermined lean region is not less than a predetermined lean degree, and that a degree of an output tendency in a predetermined rich region is less than a predetermined rich degree based on lean tendency and rich tendency values representing output tendencies of the oxygen sensor, a limit is set to the correction in a direction to more suppress enriching of an air-fuel ratio as a degree is larger in which the output of the oxygen sensor is shifted to a lean side.
摘要翻译： 根据本发明的内燃机的控制装置基于设置在催化剂上游侧的空燃比传感器的输出，执行空燃比控制，基于氧传感器的输出进行校正 催化剂的下游侧。 当确定预定稀薄区域中的输出趋势程度不小于预定稀薄度时，并且预定浓区域中的输出趋势程度小于基于倾向的预定浓度时， 表示氧传感器的输出倾向的丰富趋势值，将氧传感器的输出偏移到稀薄侧的程度越大，将空燃比浓缩的方向的修正设定为极限 。
-
公开(公告)号：US20150322881A1
公开(公告)日：2015-11-12
申请号：US14350891
申请日：2011-10-11
申请人： Sachio MORI
发明人： Sachio MORI
CPC分类号： F02D41/40 , F02D13/0215 , F02D13/0249 , F02D13/0253 , F02D13/0257 , F02D41/0002 , F02D41/1443 , F02D41/1455 , F02D41/3094 , F02D2041/001 , F02M35/10177 , F02M35/1085 , Y02T10/18 , Y02T10/42 , Y02T10/44
摘要： A control device for an internal combustion engine includes first and second intake ports (16a, 16b) independent of each other, and first and second fuel injection valves (30a, 30b) provided for the first and second intake ports (16a, 16b), respectively, in each cylinder. Under a situation where an exhaust variable valve mechanism (38) is controlled such that a first exhaust valve (32a) is opened earlier than a second exhaust valve (32b), first and second air-fuel ratios A/F1, A/F2 are respectively obtained in a first half and a second half of an exhaust stroke. When the obtained first air-fuel ratio A/F1 (or the second air-fuel ratio A/F2) is lean, a fuel injection amount in a next cycle by the first or second fuel injection valve (30a, 30b) corresponding to the first air-fuel ratio A/F1 (or the second air-fuel ratio A/F2) that is lean is reduced.
摘要翻译： 用于内燃机的控制装置包括彼此独立的第一和第二进气口（16a，16b）以及为第一和第二进气口（16a，16b）设置的第一和第二燃料喷射阀（30a，30b） 分别在每个气缸中。 在排气可变阀机构（38）被控制使得第一排气阀（32a）比第二排气阀（32b）早开的情况下，第一和第二空气燃料比A / F1，A / F2是 分别在排气冲程的前半部和后半部分中获得。 当所获得的第一空燃比A / F1（或第二空燃比A / F2）为稀时，由与第一空燃比A / F1（或第二空燃比A / F2）相对应的第一或第二燃料喷射阀（30a，30b）在下一循环中的燃料喷射量 瘦的第一空燃比A / F1（或第二空燃比A / F2）减小。
-
公开(公告)号：US08899014B2
公开(公告)日：2014-12-02
申请号：US13752728
申请日：2013-01-29
申请人： Denso Corporation
发明人： Kosuke Nakano , Shingo Nakata , Mikiyasu Matsuoka
CPC分类号： F01N11/00 , F02D41/1439 , F02D41/1455 , F02D41/1456 , F02D41/1475
摘要： An emission control system for an engine includes a catalyst and an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas. The exhaust-gas sensor includes a sensor element that includes a pair of electrodes and a solid electrolyte body located between the electrodes. The emission control system further includes a constant current supply portion that changes an output characteristic of the exhaust-gas sensor by applying a constant current between the electrodes, a rich direction control portion that performs a rich direction control after a fuelling-stop control, and a characteristic control portion that performs a rich responsiveness control during the rich direction control. In the rich direction control, an air-fuel ratio of the exhaust gas is made to be richer. In the rich responsiveness control, the constant current supply portion increases a detection responsiveness of the exhaust-gas sensor with respect to rich gas.
摘要翻译： 发动机的排放控制系统包括催化剂和排气传感器，其设置在排气的流动方向上的催化剂下游。 排气传感器包括传感器元件，其包括一对电极和位于电极之间的固体电解质体。 发光控制系统还包括：恒流供给部，其通过在电极之间施加恒定电流来改变排气传感器的输出特性;丰富方向控制部，其在加油停止控制之后执行丰富方向控制;以及 特征控制部分，在丰富方向控制期间执行丰富的响应性控制。 在丰富的方向控制下，使排气的空燃比更加丰富。 在丰富的响应性控制中，恒流供应部分增加废气传感器相对于富气的检测响应性。
-
公开(公告)号：US20140288804A1
公开(公告)日：2014-09-25
申请号：US13849402
申请日：2013-03-22
CPC分类号： F02D41/1454 , F02D41/0032 , F02D41/0052 , F02D41/144 , F02D41/1441 , F02D41/1455 , F02D41/1456 , F02D41/3005 , Y02T10/47
摘要： Various systems and methods are described for an engine system with an exhaust gas recirculation system and catalyzing and non-catalyzing intake oxygen sensors. In one example, the catalyzing oxygen sensor is utilized to measure and control exhaust gas recirculation while fuel vapor purge is measured and controlled based on the catalyzing and non-catalyzing sensors.
摘要翻译： 对于具有废气再循环系统和催化和非催化进气氧传感器的发动机系统描述了各种系统和方法。 在一个实例中，催化氧传感器用于测量和控制废气再循环，同时基于催化和非催化传感器测量和控制燃料蒸气吹扫。
-
公开(公告)号：US20140130779A1
公开(公告)日：2014-05-15
申请号：US14073222
申请日：2013-11-06
发明人： Ken Ervin Fosaaen
IPC分类号： G01M15/10
CPC分类号： G01M15/104 , F01N11/007 , F01N2560/025 , F01N2560/20 , F02D41/1445 , F02D41/1446 , F02D41/1455 , F02D41/1458 , F02D41/2416 , F02D41/2438 , G01N27/4065 , G01N33/0016 , G01N33/0036 , H05K999/99
摘要： A method of determining an air:fuel ratio based on information from an oxygen sensor exposed to exhaust gases of a combustion process, and related systems. A constant current is supplied to an oxygen sensor that has both an n-type sensing circuit and a p-type sensing circuit that share a common electrode. The currents in the respective sensing circuits is determined and a temperature value representative of a temperature of the oxygen sensor is determined. Then, an air:fuel ratio is determined based on the determined currents and the temperature value. The combustion process may then be controlled based on the air:fuel ratio. The air:fuel ratio may be determined, using the same oxygen sensor, across a range of air:fuel values in both the rich and lean regions; as such, the oxygen sensor may act as a wideband oxygen sensor.
摘要翻译： 基于暴露于燃烧过程的废气的氧传感器的信息和相关系统来确定空气：燃料比的方法。 向具有共用公共电极的n型检测电路和p型检测电路的氧传感器供给恒定电流。 确定各感测电路中的电流，并且确定代表氧传感器的温度的温度值。 然后，基于所确定的电流和温度值来确定空气：燃料比。 然后可以基于空气：燃料比来控制燃烧过程。 空气：燃料比可以使用相同的氧气传感器在一系列空气中确定：富含和贫乏区域的燃料值; 因此，氧传感器可以用作宽带氧传感器。
-
9.发明申请公开(公告)号：US20120174578A1
公开(公告)日：2012-07-12
申请号：US13346558
申请日：2012-01-09
IPC分类号： F02D23/00
CPC分类号： F02D23/00 , F02B29/0475 , F02D41/0007 , F02D41/0052 , F02D41/144 , F02D41/1455 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/25 , F02M26/46 , F02M35/10393 , Y02T10/144 , Y02T10/146 , Y02T10/47
摘要： A supercharged internal combustion engine is provided. The engine comprises a cylinder, an intake line in an intake system, for supplying charge air to the cylinder, an exhaust line for discharging exhaust gases, an exhaust-gas turbocharger including a turbine arranged in the exhaust line and a compressor arranged in the intake line, an exhaust-gas recirculation arrangement including a recirculation line which branches off from the exhaust line downstream of the turbine and opens into the intake line upstream of the compressor, and a sensor for detecting the concentration Ci,intake of a component i of the charge air in the intake system provided downstream of the opening of the recirculation line into the intake line. In this way, the exhaust-gas recirculation may be regulated based on feedback from the sensor to control emissions.
摘要翻译： 提供增压内燃机。 发动机包括气缸，进气系统中的进气管线，用于向气缸供给增压空气，用于排放废气的排气管线，包括布置在排气管线中的涡轮机的排气涡轮增压器和布置在进气口中的压缩机 排气废气再循环装置，其包括从涡轮下游的排气管线分支并且进入压缩机上游的进气管路的再循环管路，以及用于检测浓度Ci的传感器， 在进气系统中增加空气，其设置在再循环管线的开口下游进入进气管线。 以这种方式，可以基于来自传感器的反馈来调节废气再循环以控制排放。
-
10.发明授权公开(公告)号：US07930922B2
公开(公告)日：2011-04-26
申请号：US11792665
申请日：2006-07-13
申请人： Tomomi Onishi , Takao Fukuma , Shigeki Nakayama , Yoshiki Takatori , Shuichi Kubo , Satoshi Yamazaki
发明人： Tomomi Onishi , Takao Fukuma , Shigeki Nakayama , Yoshiki Takatori , Shuichi Kubo , Satoshi Yamazaki
IPC分类号： G01N7/00
CPC分类号： F02D41/029 , F01N9/002 , F02B29/0406 , F02B37/00 , F02D35/025 , F02D41/0065 , F02D41/1455 , F02D41/1467 , F02D2041/0017 , F02D2041/1433 , F02D2041/1437 , F02D2200/602 , F02M26/05 , F02M26/23 , F02M26/46 , Y02T10/47
摘要： A soot generation amount estimation apparatus obtains a generation speed of a precursor of soot (accordingly, the concentration of the precursor) in consideration of formation of the precursor from fuel, thermal decomposition of the formed precursor, and formation of soot from the formed precursor, and estimates a generation speed of soot (accordingly, the concentration of soot (the generation amount of soot)) in consideration of formation of soot from the precursor, which depends on the concentration of the precursor, and oxidation of the formed soot. The apparatus employs a reaction model in which the reaction process in which soot is generated from fuel is divided into two steps; i.e., a reaction process in which a precursor is generated from fuel and a reaction process in which soot is generated from the precursor. Thus, phenomena, such as a “delay in soot generation” in the reaction process in which soot is generated from fuel, can be accurately simulated.
摘要翻译： 烟炱发生量估计装置考虑到来自燃料的前体的形成，所形成的前体的热分解和来自所形成的前体的烟灰的形成，获得烟炱前体的生成速度（相应地，前体的浓度） 并且考虑到来自前体的烟灰的形成（其取决于前体的浓度）和形成的烟灰的氧化，估计烟灰的产生速度（因此，烟灰的浓度（烟灰的产生量））。 该装置采用反应模型，其中从燃料产生烟灰的反应过程分为两个步骤; 即其中从燃料产生前体的反应过程和从前体产生烟灰的反应过程。 因此，可以精确地模拟在燃料中产生烟灰的反应过程中的“烟灰产生的延迟”等现象。
-
-
-
-
-
-
-
-
-
搜索结果
188 条记录 (耗时 0.028 秒)
