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公开(公告)号：US20150219033A1
公开(公告)日：2015-08-06
申请号：US14174806
申请日：2014-02-06
CPC分类号： F02D41/1495 , F02D41/08 , F02D41/1454 , F02D41/222 , F02D2041/228 , F02D2041/286 , G01M15/104 , Y02T10/40
摘要： A method for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one embodiment, the method comprises indicating exhaust gas sensor degradation based on shape of a distribution of extreme values of a plurality of sets of lambda differentials collected during selected operating conditions. In this way, the exhaust gas sensor may be monitored in a non-intrusive manner.
摘要翻译： 提供一种用于监测联接在发动机排气中的废气传感器的方法。 在一个实施例中，该方法包括基于在选择的操作条件期间收集的多组λ差异的极值的分布的形状来指示排气传感器劣化。 以这种方式，废气传感器可以以非侵入的方式被监视。
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公开(公告)号：US20150211471A1
公开(公告)日：2015-07-30
申请号：US14414196
申请日：2013-07-17
发明人： Yuji Sasaki
CPC分类号： F02P5/045 , F02D13/02 , F02D13/0203 , F02D13/0234 , F02D37/02 , F02D41/0002 , F02D41/222 , F02D2041/001 , F02P5/15 , Y02T10/18 , Y02T10/42 , Y02T10/46
摘要： There is provided a valve timing varying mechanism (VTC) to vary a valve timing. An estimated VTC conversion angle VTCNFS is calculated in accordance with a sensed VTC conversion angle VTCNOW (S15˜S19). At the time of conversion of the VTC conversion angle to the advance side or retard side, a fastest response value is calculated by conversion of the VTC conversion angle from the previous sensed value with a fastest response speed, and the sensed value (estimated value) is limited to or below the fastest response value when the current value of the sensed valve timing exceeds the fastest response value (S20, S21).
摘要翻译： 提供了一个阀门正时变化机构（VTC）来改变气门正时。 根据感测到的VTC转换角VTCNOW（S15〜S19）计算估计的VTC转换角VTCNFS。 在将VTC转换角转换为前进侧或延迟侧时，通过以最快的响应速度将VTC转换角与先前感测值进行转换来计算最快的响应值，并且感测值（估计值） 当所感测的气门正时的当前值超过最快响应值时，被限制在或低于最快响应值（S20，S21）。
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公开(公告)号：US20150211429A1
公开(公告)日：2015-07-30
申请号：US14165843
申请日：2014-01-28
CPC分类号： F02D41/222 , F02D41/029 , F02D41/1466 , F02D41/1494 , F02D2200/0812 , G01M15/102 , G01N15/0606 , G01N15/0656 , G01N2015/0046 , G01R35/005
摘要： A method for verifying the validity of an output of a particulate matter sensor mounted in an engine exhaust system downstream of a diesel particulate filter, the particulate matter sensor including a pair of electrodes spaced apart from each other, includes initiating regeneration of the diesel particulate filter, applying and maintaining a higher than nominal voltage across the electrodes following the step of initiating regeneration of the diesel particulate filter, and measuring an electrical parameter across the electrodes while the higher voltage is applied across the electrodes, where the electrical parameter is indicative of an amount of soot accumulated on the sensor. The reading of accumulated soot is evaluated to determine whether the sensor is indicating that the amount of accumulated soot is within an expected range based on a clean diesel particulate filter and the elevated applied voltage.
摘要翻译： 一种用于验证安装在柴油机微粒过滤器下游的发动机排气系统中的颗粒物质传感器的输出的有效性的方法，所述颗粒物质传感器包括彼此间隔开的一对电极，包括启动柴油颗粒过滤器的再生 在启动柴油机微粒过滤器的再生的步骤之后，在电极之间施加和维持高于标称电压，以及跨越电极测量跨越电极的电参数，同时电参数指示电极 积累在传感器上的烟尘量。 评估积累的烟灰的读数以确定传感器是否表明基于清洁的柴油微粒过滤器和升高的施加电压，累积烟灰的量在预期范围内。
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公开(公告)号：US09080528B2
公开(公告)日：2015-07-14
申请号：US13696474
申请日：2010-05-17
申请人： Shinsuke Aoyagi
发明人： Shinsuke Aoyagi
CPC分类号： F02D41/22 , F02D41/005 , F02D41/144 , F02D41/1454 , F02D41/146 , F02D41/18 , F02D41/182 , F02D41/221 , F02D41/222 , F02D2200/0406 , F02D2200/0614 , F02D2250/36
摘要： A control device for an internal combustion engine, which determines a fuel injection quantity deviation state and/or an intake oxygen concentration-related parameter deviation state on the basis of the relationship between the target value (Qtgt) of the fuel injection quantity and an NOx concentration deviation (ΔNOx) indicating the difference of the measured value or the estimate value of the NOx concentration of exhaust gas with respect to a predetermined NOx reference concentration, the control device having a state determination means for, on the basis of a first determination index including the amount of change of the NOx concentration deviation (ΔNOx) when the target value (Qtgt) of the fuel injection quantity increases within a predetermined range and the NOx concentration deviation (ΔNOx) when the target value (Qtgt) of the fuel injection quantity is a predetermined first value (Qtgt2), determining whether the fuel injection quantity deviation is zero, positive, or negative.
摘要翻译： 一种用于内燃机的控制装置，其基于燃料喷射量的目标值（Qtgt）与NOx之间的关系确定燃料喷射量偏差状态和/或进气氧浓度相关参数偏差状态 浓度偏差（＆Dgr; NOx），其指示排气的NOx浓度相对于预定的NOx参考浓度的测量值或估计值的差异，所述控制装置具有状态确定装置，所述状态确定装置基于第一 确定指标，其包括当目标值（Qtgt）在燃料喷射量的目标值（Qtgt）在预定范围内增加时的NOx浓度偏差（＆Dgr; NOx）的变化量和NOx浓度偏差（＆Dgr; NOx） ）为预定的第一值（Qtgt2），确定燃料喷射量偏差是否为零，正，o r为负数。
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公开(公告)号：US09074548B2
公开(公告)日：2015-07-07
申请号：US14538726
申请日：2014-11-11
发明人： Gopichandra Surnilla , Imad Hassan Makki , Michael James Uhrich , Timothy Joseph Clark , James Michael Kerns , Robert Roy Jentz
CPC分类号： F02D41/222 , F02D41/005 , F02D41/0065 , F02D41/0245 , F02D41/064 , F02D2200/0414 , F02D2200/0418 , F02M26/07 , F02M26/14 , F02M26/42 , F02M26/45 , Y02T10/26
摘要： Methods and systems are provided for an engine including a humidity sensor. Degradation of the humidity sensor may be determined based on a change in intake air relative humidity as compared to a change in intake air temperature or pressure, under selected conditions. An amount of exhaust gas recirculated to an engine intake is adjusted differently based on whether the humidity sensor is degraded or functional.
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86.发明申请公开(公告)号：US20150184609A1
公开(公告)日：2015-07-02
申请号：US14327345
申请日：2014-07-09
发明人： Sang Il YOON
CPC分类号： F02D41/222 , F02D41/0072 , F02D41/1454 , F02D41/1495 , F02D41/18 , G01N33/007 , Y02T10/47
摘要： A method of diagnosing deterioration of an oxygen sensor of a vehicle may include detecting a first exhaust gas recirculation (EGR) amount by a mass air flow (MAF) sensor, detecting a second EGR amount by the oxygen sensor, comparing a first difference between the first EGR amount and the second EGR amount with a first predetermined value in a first predetermined operating region, and determining that the oxygen sensor may be in danger of the deterioration when the first difference between the first EGR amount and the second EGR amount may be greater than or equal to the first predetermined value in the first predetermined operating region.
摘要翻译： 诊断车辆的氧传感器的劣化的方法可以包括通过质量空气流（MAF）传感器检测第一废气再循环量（EGR）量，通过氧传感器检测第二EGR量，比较第 在第一预定操作区域中具有第一预定值的第一EGR量和第二EGR量，并且当第一EGR量和第二EGR量之间的第一差可以更大时，确定氧传感器可能处于劣化的危险中 大于或等于第一预定操作区域中的第一预定值。
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公开(公告)号：US20150184607A1
公开(公告)日：2015-07-02
申请号：US14644074
申请日：2015-03-10
CPC分类号： F02D41/18 , F02B37/183 , F02D41/0002 , F02D41/0007 , F02D41/0052 , F02D41/008 , F02D41/145 , F02D41/182 , F02D41/221 , F02D41/222 , F02D41/3005 , F02D2200/0406 , F02D2200/0408 , F02D2250/14 , Y02T10/144 , Y02T10/42
摘要： An engine system and method for improving sampling of a port throttle pressure sensor. In one example, the port throttle pressure sensor is sampled a plurality of times during a cylinder cycle and different engine operating conditions are determined from selected samples. The system and method may improve engine air-fuel control as well as engine diagnostics.
摘要翻译： 一种用于改善端口节流压力传感器采样的发动机系统和方法。 在一个示例中，在气缸循环期间对端口节气门压力传感器进行多次采样，并且从所选择的样本确定不同的发动机操作条件。 该系统和方法可以改进发动机空气燃料控制以及发动机诊断。
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公开(公告)号：US09050561B1
公开(公告)日：2015-06-09
申请号：US14226050
申请日：2014-03-26
发明人： Justin Adam Shetney , Min Sun , John A. Catalogna
CPC分类号： B01D53/9495 , B01D53/90 , B01D53/9409 , F01N3/208 , F01N9/005 , F01N9/007 , F01N11/00 , F01N2550/05 , F01N2560/026 , F01N2560/14 , F01N2900/0412 , F01N2900/1621 , F01N2900/1622 , F01N2900/1818 , F02D41/222 , G05D21/02 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： An exhaust gas treatment system includes a reductant delivery system configured to introduce a reductant solution to an exhaust gas flowing through the exhaust gas treatment system. A selective catalyst reduction device is configured to chemically react with the reductant solution to induce a NOx conversion that reduces a level of NOx in the exhaust gas. A reductant quality sensor is configured to generate an electrical signal indicating a quality of the reductant solution. The exhaust gas treatment system further includes a rationality diagnostic control module configured to rationalize the reductant quality sensor based on a comparison between the quality of the reductant solution and the NOx conversion.
摘要翻译： 废气处理系统包括还原剂输送系统，其被配置为将还原剂溶液引入流经废气处理系统的废气。 选择性催化剂还原装置被配置为与还原剂溶液发生化学反应以引起NOx转化，其降低废气中的NOx的水平。 还原剂质量传感器被配置为产生指示还原剂溶液的质量的电信号。 排气处理系统还包括理性诊断控制模块，其被配置为基于还原剂溶液的质量与NOx转化之间的比较来使还原剂质量传感器合理化。
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公开(公告)号：US20150152802A1
公开(公告)日：2015-06-04
申请号：US14095908
申请日：2013-12-03
IPC分类号： F02D41/00
CPC分类号： F02D41/2474 , F02D41/222 , F02D2200/0406 , F02D2200/0408 , F02D2200/704 , Y02T10/40
摘要： Methods and systems are provided for determining an offset of a manifold pressure sensor. In one example, an engine method may include indicating degradation of the manifold pressure sensor based on a sensor offset, the sensor offset based on a manifold pressure measured at a first throttle angle, a barometric pressure at a second throttle angle, a reference manifold pressure at the first throttle angle and reference barometric pressure, and the reference barometric pressure. Further, the method may include adjusting an output of the manifold pressure sensor by the determined sensor offset.
摘要翻译： 提供了用于确定歧管压力传感器的偏移的方法和系统。 在一个示例中，发动机方法可以包括基于传感器偏移来指示歧管压力传感器的劣化，基于在第一节气门角度处测量的歧管压力的传感器偏移，在第二节流角处的大气压力，参考歧管压力 在第一个节气门角度和参考气压，以及参考气压。 此外，该方法可以包括通过所确定的传感器偏移来调节歧管压力传感器的输出。
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公开(公告)号：US20150152801A1
公开(公告)日：2015-06-04
申请号：US14095884
申请日：2013-12-03
IPC分类号： F02D35/02
CPC分类号： F02D41/2474 , F02D41/222 , F02D2009/0227 , F02D2200/0406 , F02D2200/0408 , F02D2200/704 , Y02T10/40
摘要： Methods and systems are provided for estimating barometric pressure based on a reference barometric pressure and manifold pressures at two different altitudes. In one example, a method may include adjusting an operating condition of the engine based on barometric pressure during engine operation at throttle angles less than a threshold, the barometric pressure based on a current manifold pressure relative to a reference manifold pressure at a current throttle angle and reference barometric pressure. Further, the method may include adjusting a manifold pressure sensor output based on an offset of the manifold pressure sensor.
摘要翻译： 提供了方法和系统，用于根据参考气压和两个不同高度的歧管压力估算大气压力。 在一个示例中，方法可以包括：在发动机运行期间，在节气门角度小于阈值的情况下，基于大气压力来调节发动机的运行状态，大气压力基于相对于当前节流角度处的参考歧管压力的当前歧管压力 和参考气压。 此外，该方法可以包括基于歧管压力传感器的偏移来调节歧管压力传感器输出。
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