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11. 发明授权

US5839415A Air-fuel ratio control system having function of after-start lean-burn control for internal combustion engines 失效
公开(公告)号：US5839415A
公开(公告)日：1998-11-24
申请号：US910903
申请日：1997-08-13
申请人： Norio Suzuki , Koichi Fujimori , Yusuke Hasegawa , Hiroki Munakata , Shusuke Akazaki , Masuhiro Yoshizaki
发明人： Norio Suzuki , Koichi Fujimori , Yusuke Hasegawa , Hiroki Munakata , Shusuke Akazaki , Masuhiro Yoshizaki
IPC分类号： F02D41/00 , F02D41/02 , F02D41/06 , F02D41/14 , F02D41/34
CPC分类号： F02D41/1486 , F02D41/008 , F02D41/021 , F02D41/06 , F02D41/062 , F02D41/1402 , F02D41/1441 , F02D41/1475 , F02D41/1477 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/0085 , F02D41/1456
摘要： There is provided an air-fuel ratio control system for an internal combustion engine installed on an automotive vehicle. The control system controls the air-fuel ratio of a mixture supplied to the engine to a value leaner than a stoichiometric air-fuel ratio immediately after the start of the engine. Operating conditions of the engine and/or operating conditions of the automotive vehicle is detected. Starting of the vehicle is predicted based on the detected operating conditions of the engine and/or the detected operating conditions of the automotive vehicle. The air-fuel ratio of the mixture supplied to the engine is changed to a richer value than the leaner value when the starting of the vehicle is predicted.

12. 发明授权

US5623913A Fuel injection control apparatus 失效
标题翻译：燃油喷射控制装置
公开(公告)号：US5623913A
公开(公告)日：1997-04-29
申请号：US602286
申请日：1996-02-16
申请人： Shinichi Kitajima , Yusuke Hasegawa , Toshio Hayashi , Yoshitaka Takasuka
发明人： Shinichi Kitajima , Yusuke Hasegawa , Toshio Hayashi , Yoshitaka Takasuka
IPC分类号： F02D41/00 , F02D41/14 , F02D41/34 , G06G7/70
CPC分类号： F02D41/008 , F02D41/1401 , F02D41/1477 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/1402 , F02D41/1456
摘要： A fuel injection apparatus for internal combustion engine of this invention applies detection output of a wide-range air/fuel ratio sensor to an observer so as to estimate an air/fuel ratio of individual cylinder and, based on thus estimated air/fuel ratio, obtains an air/fuel ratio correction coefficient for individual cylinder and correctively controls the fuel injection amount for individual cylinder with the air/fuel ratio correction coefficient for individual cylinder. While the estimation processing of the observer is always continued, the air/fuel ratio correction coefficient for individual cylinder is automatically adjusted, for example, when the estimated air/fuel ratio becomes an abnormal value, according to operational condition of the internal combustion engine, and the like, thereby securing the stability in the corrective control and preventing the emission from deteriorating. Also, the calculation processing of the air/fuel ratio correction coefficient for individual cylinder is thinned out at a predetermined timing in response to increase in the engine speed, for example, to shorten the corrective control, thereby achieving the purification of the exhaust gas even when the internal combustion engine is at a high speed.
摘要翻译：本发明的内燃机的燃料喷射装置将大范围的空气/燃料比传感器的检测输出应用于观测者，以估计各个气缸的空燃比，并且基于这样估计的空气/燃料比，获得单个气缸的空燃比校正系数，并且对各个气缸的空燃比校正系数进行各个气缸的燃料喷射量的校正。在观察者的估计处理总是持续的情况下，根据内燃机的运转状态，例如当估计的空气/燃料比成为异常值时，自动调节各气缸的空燃比校正系数，从而确保了校正控制中的稳定性并防止了排放的恶化。此外，响应于发动机转速的增加，单个气缸的空燃比校正系数的计算处理在预定定时被稀疏，例如缩短校正控制，从而实现排气的均匀化，甚至当内燃机处于高速时。

13. 发明授权

US5579746A Engine lean air/fuel control system 失效
标题翻译：发动机稀薄空气/燃料控制系统
公开(公告)号：US5579746A
公开(公告)日：1996-12-03
申请号：US485064
申请日：1995-06-08
申请人： Douglas R. Hamburg , Dennis C. Reed , Nicholas G. Zorka
发明人： Douglas R. Hamburg , Dennis C. Reed , Nicholas G. Zorka
IPC分类号： F02D41/14
CPC分类号： F02D41/1477
摘要： An air/fuel control system for an engine (28) provides an air/fuel indicating signal linearly related to average engine air/fuel operation from a two-state exhaust gas oxygen sensor (44). Fuel delivered to the engine is modulated with a periodic signal (144). A reference value corresponding to a desired air/fuel ratio is subtracted from a rolling average of the exhaust gas oxygen sensor output to provide an error signal (148-152). A feedback variable (FV) for adjusting the engine air/fuel ratio is generated from a proportional plus integral controller having the error signal as its input (156). In this manner, average engine air/fuel ratio is maintained at the desired air/fuel ratio and the rolling average of the exhaust gas oxygen sensor output provides an air/fuel indicating signal.
摘要翻译：用于发动机（28）的空气/燃料控制系统从两状态排气氧传感器（44）提供与平均发动机空气/燃料操作线性相关的空气/燃料指示信号。输送到发动机的燃料用周期信号（144）进行调制。从排气氧传感器输出的滚动平均值中减去与期望的空气/燃料比相对应的基准值，以提供误差信号（148-152）。用于调整发动机空燃比的反馈变量（FV）由具有误差信号作为其输入的比例积分控制器产生（156）。以这种方式，平均发动机空气/燃料比保持在期望的空气/燃料比，并且排气氧传感器输出的滚动平均值提供空气/燃料指示信号。

14. 发明授权

US5289717A Air-fuel ratio detecting device 失效
标题翻译：空燃比检测装置
公开(公告)号：US5289717A
公开(公告)日：1994-03-01
申请号：US731006
申请日：1991-07-16
申请人： Tetsurou Ishida
发明人： Tetsurou Ishida
IPC分类号： G01L23/24 , F02D41/14 , F02D45/00 , G01N27/26 , G01N27/406 , G01N27/409 , G01N27/419 , G01M15/00
CPC分类号： F02D41/1477 , F02D41/1454 , G01N27/4065 , F02D41/1456
摘要： An air fuel ratio detecting device has an air-fuel ratio sensor for producing an air-fuel ratio information indicative of the concentration of oxygen in an exhaust gas produced by a burned air-fuel mixture in the internal combustion engine. An air-fuel ratio is calculated on the basis of the air-fuel ratio information. A pressure in the exhaust gas is calculated on the basis of pressure information depending on the pressure of the exhaust gas. The difference between the pressure and a reference pressure which acts on the air-fuel ratio sensor when the air-fuel ratio sensor is placed in a reference environment, is calculated. The air-fuel ratio is corrected with the pressure difference. The corrected air-fuel ratio is free of pressure fluctuations of the exhaust gas, and is highly reliable for accurate air-fuel ratio control. The air-fuel ratio detecting device is effective for improved fuel economy, increased engine output power, a more stable idling engine speed, purified exhaust emission, and improved drivability.
摘要翻译：空燃比检测装置具有空燃比传感器，用于产生表示由内燃机中的燃烧空气燃料混合物产生的废气中的氧浓度的空燃比信息。基于空燃比信息计算空燃比。基于取决于排气压力的压力信息计算废气中的压力。计算当将空燃比传感器置于参考环境中时作用于空燃比传感器的压力和基准压力之间的差。利用压力差校正空燃比。校正空燃比没有排气的压力波动，并且对于精确的空燃比控制是高度可靠的。空燃比检测装置对于提高燃油经济性，提高发动机输出功率，更稳定的怠速发动机转速，净化尾气排放以及改善的驾驶性能是有效的。

15. 发明授权

US5036819A Control system for the air/fuel ratio of an internal combustion engine 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5036819A
公开(公告)日：1991-08-06
申请号：US477976
申请日：1990-04-30
申请人： Cornelius Peter , Gunther Plapp , Lothar Raff , Eberhard Schnaibel , Michael Westerdorf
发明人： Cornelius Peter , Gunther Plapp , Lothar Raff , Eberhard Schnaibel , Michael Westerdorf
IPC分类号： F02D41/14 , F02D45/00
CPC分类号： F02D41/1477 , F02D2041/1409 , F02D41/1441
摘要： A control system for controlling the air/fuel ratio in an internal combustion engine 10, in which an oxygen probe (lambda probe) 13 is arranged in the exhaust gas of the internal combustion engine 10, has a control device 12 for continuous control. The actual value of the air ratio lambda is determined via a measured probe output voltage in conjunction with an at least approximately predetermined probe-characteristic relationship 16 between the value of the probe output voltage and the value of the air ratio lambda associated therewith. After forming the difference of desired value and actual value of the air ratio lambda, the air/fuel ratio is controlled on the basis of this difference. Such a control system is used primarily in order to reduce the total emission of the main pollutant components of the exhaust gas of an internal combustion engine. In particular in the case of an internal combustion engine 10 with catalytic converter arranged in the exhaust gas, a maintenance of the air ratio lambda as accurate as possible necessary for optimum efficiency of the catalytic converter (lambda=1) is assured.
摘要翻译： PCT No.PCT / DE88 / 00659 Sec。 371日期1990年04月30日 102（e）日期1990年4月30日PCT提交1988年10月26日PCT公布。 WO 89/4424 PCT公开号日本1989年5月18日。一种用于控制内燃机10中的空燃比的控制系统，其中在内燃机10的排气中配置氧探头（λ探针）13，具有控制装置 12连续控制。空气比λ的实际值通过测量的探头输出电压以及探针输出电压的值与与之相关联的空气比λ的值之间的至少近似预定的探针特性关系16来确定。在形成空气比λ的期望值和实际值的差之后，基于该差来控制空燃比。这种控制系统主要用于减少内燃机废气的主要污染物成分的总排放量。特别是在具有设置在废气中的催化转化器的内燃机10的情况下，确保尽可能准确地维持催化转化器（λ= 1）的最佳效率所需的空气比λ。

16. 发明授权

US09885307B2 Control apparatus for internal combustion engine 有权
公开(公告)号：US09885307B2
公开(公告)日：2018-02-06
申请号：US14390234
申请日：2012-04-10
申请人： Yuji Yamaguchi , Norihisa Nakagawa , Shuntaro Okazaki
发明人： Yuji Yamaguchi , Norihisa Nakagawa , Shuntaro Okazaki
IPC分类号： F02D41/30 , F02D41/14
CPC分类号： F02D41/30 , F02D41/1401 , F02D41/1441 , F02D41/1477 , F02D2041/1422
摘要： Invention suppresses deterioration of emission if there is air-fuel ratio imbalance among cylinders. Apparatus (100) controlling an engine including first and second air-fuel ratio sensors respectively disposed on upstream and downstream of catalyst, has: first determining device determining first F/B controlled variable according to deviation between output value and target value of first air-fuel ratio sensor; second determining device determining second F/B controlled variable according to deviation between output value and target value of second air-fuel ratio sensor; controlling device controlling fuel injection amount based on first and second F/B controlled variables; detecting device detecting air-fuel ratio imbalance among cylinders; and correcting device correcting second F/B controlled variable in direction in which there is hardly change of fuel injection amount to lean air-fuel ratio side, according to output deviation between first and second air-fuel ratio sensors, if air-fuel ratio imbalance is detected.

17. 发明申请

US20170096956A1 Radio Frequency Control of Air-Fuel Ratio 有权
公开(公告)号：US20170096956A1
公开(公告)日：2017-04-06
申请号：US14872588
申请日：2015-10-01
申请人： Ford Global Technologies, LLC
发明人： David John KUBINSKI
IPC分类号： F02D41/02 , F01N3/20 , F02D41/14
CPC分类号： F02D41/0245 , F01N1/02 , F01N3/101 , F01N3/2066 , F01N9/00 , F01N2430/06 , F01N2560/12 , F01N2900/1624 , F02D41/1454 , F02D41/1477 , F02D2200/0802 , F02D2200/0814 , F02D2200/0816 , Y02T10/22 , Y02T10/26 , Y02T10/47
摘要： Methods are disclosed for determining an oxidation state of a catalyst using RF signals. The method may include introducing radio-frequency signals into a resonant chamber including a catalyst, modulating an air-fuel ratio of an engine upstream of the catalyst to generate a sequence of uniform pulses and at least one altered pulse that differs from the uniform pulses, and comparing a frequency response of two or more resonant modes of the radio-frequency signals during the sequence to determine an oxidation state of the catalyst. The method may further include adjusting the air-fuel ratio based on the comparing step. Two or more altered pulses may be inserted into the air-fuel ratio sequence. The altered pulse may have a pulse width and/or amplitude that differs from the uniform pulses. The methods may be used to adjust an air-fuel ratio to correct or impart a bias.

18. 发明申请

US20160363092A1 VEHICLE 审中-公开
标题翻译：车辆
公开(公告)号：US20160363092A1
公开(公告)日：2016-12-15
申请号：US15175262
申请日：2016-06-07
申请人： Toyota Jidosha Kabushiki Kaisha
发明人： Akihiro Kaneko
IPC分类号： F02D41/38 , F02M63/00 , B60K6/24 , F01N3/20 , B60K6/40 , B60K6/46 , F02M59/46 , F02D41/14
CPC分类号： B60K6/24 , B60K6/445 , B60W10/30 , B60W20/15 , B60W2710/0627 , B60Y2200/92 , F01N3/20 , F02D41/1477 , F02D41/3854 , F02D2041/389 , F02D2200/0602 , F02D2200/1002 , F02D2250/02 , Y02T10/6239 , Y10S903/905 , Y10S903/93
摘要： A feed pump supplies fuel to a port injection valve of an engine through low pressure fuel piping by applying a pressure to fuel. An engine ECU controls a fuel pressure which is a pressure applied to fuel by driving the feed pump. When the feed pump is driven to lower the fuel pressure, and it is determined that vapor is generated in the fuel piping, the engine ECU executes a fuel pressure control that increases the fuel pressure provided at the time of determination.
摘要翻译：进料泵通过对燃料施加压力，通过低压燃料管道向发动机的进气口喷射阀供应燃料。发动机ECU通过驱动进给泵来控制作为施加到燃料的压力的燃料压力。当供给泵被驱动以降低燃料压力，并且确定在燃料管道中产生蒸气时，发动机ECU执行增加在确定时提供的燃料压力的燃料压力控制。

19. 发明授权

US08700291B2 System for controlling the exhaust gas return rate by means of virtual NOx sensors with adaptation via a NOx sensor 有权
标题翻译：用于通过具有通过NOx传感器适配的虚拟NOx传感器来控制废气返回率的系统
公开(公告)号：US08700291B2
公开(公告)日：2014-04-15
申请号：US12597556
申请日：2007-04-26
申请人： Olaf Erik Herrmann
发明人： Olaf Erik Herrmann
IPC分类号： B60T7/12 , G05D1/00 , G06F7/00 , G06F17/00 , F02B47/08 , F02M25/07
CPC分类号： F02D41/0052 , F02B3/06 , F02B29/0406 , F02D41/0072 , F02D41/1402 , F02D41/1404 , F02D41/1405 , F02D41/146 , F02D41/1462 , F02D41/1467 , F02D41/1477 , F02D41/187 , F02D41/2451 , F02D2041/1409 , F02D2041/1419 , F02D2041/1433 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , F02M26/47 , F02M26/48 , Y02T10/47
摘要： The present invention relates to a method for adjusting a mass flow of an exhaust gas return of an internal combustion engine, taking into consideration a NOx behavior, wherein a controlling system provides a coupling of a virtual NOx determination with a real NOx control. Furthermore, an internal combustion engine with appropriate controlling means is proposed.
摘要翻译：本发明涉及一种考虑到NOx行为来调节内燃机排气回流的质量流量的方法，其中控制系统提供虚拟NOx确定与实际NOx控制的耦合。此外，提出了具有适当控制装置的内燃机。

20. 发明申请

US20120266647A1 DEVICE AND METHOD FOR DIAGNOSING AN EXHAUST GAS SENSOR 有权
标题翻译：用于诊断排气传感器的装置和方法
公开(公告)号：US20120266647A1
公开(公告)日：2012-10-25
申请号：US13503507
申请日：2010-10-14
申请人： Stefan Barnikow , Frank Friedhof , Ekkehart-Peter Wagner
发明人： Stefan Barnikow , Frank Friedhof , Ekkehart-Peter Wagner
IPC分类号： G01N37/00
CPC分类号： F02D41/1495 , F02D41/1454 , F02D41/1456 , F02D41/1477 , F02D41/222 , F02D2041/2089 , F02D2041/2093 , G01N27/419
摘要： A device for diagnosing an exhaust gas sensor, in particular a linear oxygen probe, for an internal combustion engine. A diagnostic unit is configured to control a first and a second current source in a coordinated manner in order to generate a first and a second current. Each of the currents has a predefined polarity sign, and is designed to determine the first and/or second and/or third voltages applied at a first and/or second and/or third terminal when first and second currents flow and put the amounts of the voltages in relation to the coordinated currents such that line interruptions and/or short circuits can be detected at the first and/or second and/or third terminal.
摘要翻译：一种用于诊断用于内燃机的排气传感器，特别是线性氧气探测器的装置。诊断单元被配置为以协调的方式控制第一和第二电流源，以便产生第一和第二电流。每个电流具有预定义的极性符号，并且被设计成确定当第一和第二电流流动时施加在第一和/或第二和/或第三端子处的第一和/或第二和/或第三电压，并且将相对于协调电流的电压，使得可以在第一和/或第二和/或第三端子处检测线路中断和/或短路。

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