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公开(公告)号：US07681560B2
公开(公告)日：2010-03-23
申请号：US11943047
申请日：2007-11-20
申请人： Shiro Yamaoka , Eiichiro Ohata , Jun Kubo , Noboru Tokuyasu , Toshiki Otsuki , Hiroaki Hoshika
发明人： Shiro Yamaoka , Eiichiro Ohata , Jun Kubo , Noboru Tokuyasu , Toshiki Otsuki , Hiroaki Hoshika
CPC分类号： F02D41/005 , F02B29/0406 , F02B2275/14 , F02D2041/0075 , F02M26/05 , F02M26/06 , F02M26/28 , F02M26/35 , F02M26/47 , F02M26/49 , Y02T10/47
摘要： The present invention prevents an EGR sensor installed in an engine's EGR path from being soiled by soiling substances in exhaust. A catalyst is positioned upstream of the EGR sensor to purify the soiling substances in EGR gas. The status of the EGR sensor is properly controlled in accordance with the conditions of the catalyst. This ensures the EGR sensor is less likely to be affected by the soiling substances in the exhaust under any circumstances of the EGR path and allows the EGR sensor to avoid a decrease in the accuracy of EGR gas detection. An alternative configuration may be employed such that the EGR gas recirculates from the downstream side of a catalyst installed in a main exhaust path.
摘要翻译： 本发明防止了安装在发动机EGR通路中的EGR传感器被污染排气中的物质所污染。 催化剂位于EGR传感器的上游，以净化EGR气体中的污物。 根据催化剂的条件适当地控制EGR传感器的状态。 这确保EGR传感器在EGR路径的任何情况下不太可能受到排气中的污染物质的影响，并且允许EGR传感器避免EGR气体检测的精度的降低。 可以采用替代配置，使得EGR气体从安装在主排气路径中的催化剂的下游侧再循环。
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公开(公告)号：US08290685B2
公开(公告)日：2012-10-16
申请号：US12920558
申请日：2009-07-24
CPC分类号： F02D41/0245 , F01N3/021 , F01N3/10 , F01N2560/07 , F02D41/027 , F02D41/1445 , F02D41/1446 , F02D41/1447 , F02D41/187 , F02D41/222 , F02D2400/08 , Y02T10/26
摘要： A control device for an engine, capable of accurately estimating the quantity of exhaust heat from the engine and performing engine control which improves the exhaust quality and fuel consumption of the engine in various operating conditions thereof, by using the accurate estimated value of the quantity of exhaust heat. A control device for an engine is provided with an exhaust flow rate sensor for directly sensing the flow rate of exhaust gas discharged from the engine, an exhaust temperature estimating device for sensing or estimating the temperature of the exhaust gas discharged from the engine, and an exhaust heat quantity estimating device for estimating, based on an output of the exhaust flow rate sensor and an output of the exhaust temperature estimating device, the quantity of heat of the exhaust gas discharged from the engine.
摘要翻译： 一种用于发动机的控制装置，其能够精确地估计来自发动机的排气量并执行发动机控制，其通过使用发动机的各种操作条件的精确估计值来提高发动机的各种运行条件下的排气质量和燃料消耗 排气热。 一种用于发动机的控制装置设置有用于直接感测从发动机排出的废气的流量的排气流量传感器，用于感测或估计从发动机排出的废气的温度的排气温度估计装置，以及 排气热量估计装置，用于基于排气流量传感器的输出和排气温度推定装置的输出，估计从发动机排出的废气的热量。
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公开(公告)号：US20090143959A1
公开(公告)日：2009-06-04
申请号：US12277888
申请日：2008-11-25
IPC分类号： F02D41/00
CPC分类号： F02D41/0002 , F02D41/0072 , F02D41/18 , F02D41/222 , F02D41/3035 , F02D41/3076 , F02D2041/0075 , F02D2200/0406 , F02D2400/08 , F02M26/05 , F02M26/06 , F02M26/28 , F02M26/47 , Y02T10/42 , Y02T10/47
摘要： An engine that re-circulates its exhaust gas suffers decreased accuracy in estimating an EGR rate real-time especially while the operating state of the engine is in a transitional state, which often results in torque fluctuations and deteriorated exhaust gas.A sensor for directly detecting an EGR flow rate is disposed in an EGR path. An EGR rate and in-cylinder oxygen concentration are calculated from the output value of that sensor. In addition, when this EGR rate calculation method is used, the calculation is properly switched between a steady operation state characterized by a low load and small rotational fluctuations and a transitional operating state including the acceleration and deceleration. This makes it possible to correctly estimate the EGR rate and the in-cylinder oxygen concentration under a wide range of engine operation conditions, and thereby to avoid the fluctuation of torque and the deterioration of exhaust gas.
摘要翻译： 特别是在发动机的运转状态处于过渡状态时，再次循环排气的发动机在实际EGR估计中的精度降低，这通常导致扭矩波动和废气劣化。 用于直接检测EGR流量的传感器设置在EGR通路中。 从该传感器的输出值计算EGR率和缸内氧浓度。 此外，当使用该EGR率计算方法时，可以在以低负载和小的旋转波动为特征的稳定运行状态和包括加速和减速的过渡运行状态之间适当地切换运算。 这使得可以在较宽的发动机运转条件下正确地估计EGR率和缸内氧气浓度，从而避免扭矩的波动和废气的劣化。
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公开(公告)号：US07954373B2
公开(公告)日：2011-06-07
申请号：US12432323
申请日：2009-04-29
IPC分类号： G01F1/68
CPC分类号： G01F1/684 , G01F1/6842 , G01F1/698 , G01F1/699
摘要： There is provided a thermal type flow meter capable of accurately detecting a flow rate even when a fluid temperature varies rapidly or when the fluid temperature is high. A probe includes: a first main heating resistor; a second main heating resistor set at a temperature different from that of the first main heating resistor; and a sub-heating resistor for heating lead wires of the two main heating resistors. A CPU of a sensor control circuit finds a fluid temperature by using the two main heating resistors, and finds a fluid flow rate by using at least one of the two main heating resistors.
摘要翻译： 提供了一种即使当流体温度快速变化或当流体温度高时能够精确地检测流量的热式流量计。 探头包括：第一主发热电阻器; 设置在与第一主发热电阻器不同的温度的第二主发热电阻器; 以及用于加热两个主要加热电阻器的引线的次加热电阻器。 传感器控制电路的CPU通过使用两个主要加热电阻器来找到流体温度，并通过使用两个主要加热电阻器中的至少一个来获得流体流量。
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公开(公告)号：US07715975B2
公开(公告)日：2010-05-11
申请号：US12277888
申请日：2008-11-25
CPC分类号： F02D41/0002 , F02D41/0072 , F02D41/18 , F02D41/222 , F02D41/3035 , F02D41/3076 , F02D2041/0075 , F02D2200/0406 , F02D2400/08 , F02M26/05 , F02M26/06 , F02M26/28 , F02M26/47 , Y02T10/42 , Y02T10/47
摘要： An engine that re-circulates its exhaust gas suffers decreased accuracy in estimating an EGR rate real-time especially while the operating state of the engine is in a transitional state, which often results in torque fluctuations and deteriorated exhaust gas.A sensor for directly detecting an EGR flow rate is disposed in an EGR path. An EGR rate and in-cylinder oxygen concentration are calculated from the output value of that sensor. In addition, when this EGR rate calculation method is used, the calculation is properly switched between a steady operation state characterized by a low load and small rotational fluctuations and a transitional operating state including the acceleration and deceleration. This makes it possible to correctly estimate the EGR rate and the in-cylinder oxygen concentration under a wide range of engine operation conditions, and thereby to avoid the fluctuation of torque and the deterioration of exhaust gas.
摘要翻译： 特别是在发动机的运转状态处于过渡状态时，再次循环排气的发动机在实际EGR估计中的精度降低，这通常导致扭矩波动和废气劣化。 用于直接检测EGR流量的传感器设置在EGR通路中。 从该传感器的输出值计算EGR率和缸内氧浓度。 此外，当使用该EGR率计算方法时，可以在以低负载和小的旋转波动为特征的稳定运行状态和包括加速和减速的过渡运行状态之间适当地切换运算。 这使得可以在较宽的发动机运转条件下正确地估计EGR率和缸内氧气浓度，从而避免扭矩的波动和废气的劣化。
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公开(公告)号：US20090241654A1
公开(公告)日：2009-10-01
申请号：US12389246
申请日：2009-02-19
摘要： A high-accuracy EGR sensor is provided. A recirculation system is provided which controls the flow rate of EGR by use of the sensor. A thermal gas flowmeter includes a heating resistor disposed in a flow of gas to be measured for detecting the flow rate of the gas, and an external circuit electrically connected to the heating resistor for outputting a signal according to the flow rate of the gas to be measured using the heating resistor. The heating resistor is controlled to be heated at a temperature equal to or higher than a vapor film forming temperature for forming a vapor film.
摘要翻译： 提供了一种高精度的EGR传感器。 提供了一种利用传感器控制EGR流量的再循环系统。 热气流量计包括设置在待测气体流中以检测气体流量的加热电阻器，以及电连接到加热电阻器的外部电路，用于根据气体的流量输出信号 使用加热电阻测量。 加热电阻器被控制在等于或高于用于形成蒸气膜的蒸气成膜温度的温度下加热。
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公开(公告)号：US20110166768A1
公开(公告)日：2011-07-07
申请号：US12920558
申请日：2009-07-24
CPC分类号： F02D41/0245 , F01N3/021 , F01N3/10 , F01N2560/07 , F02D41/027 , F02D41/1445 , F02D41/1446 , F02D41/1447 , F02D41/187 , F02D41/222 , F02D2400/08 , Y02T10/26
摘要： A control device for an engine, capable of accurately estimating the quantity of exhaust heat from the engine and performing engine control which improves the exhaust quality and fuel consumption of the engine in various operating conditions thereof, by using the accurate extimated value of the quantity of exhaust heat. A control device for an engine is provided with an exhaust flow rate sensor for directly sensing the flow rate of exhaust gas discharged from the engine, an exhaust temperature estimating device for sensing or estimating the temperature of the exhaust gas discharged from the engine, and an exhaust heat quantity estimating device for estimating, based on an output of the exhaust flow rate sensor and an output of the exhaust temperature estimating device, the quantity of heat of the exhaust gas discharged from the engine.
摘要翻译： 一种用于发动机的控制装置，其能够精确地估计来自发动机的排气量并执行发动机控制，其通过使用所述发动机的数量的准确的终止值来提高发动机的各种运行条件下的排气质量和燃料消耗 排气热。 一种用于发动机的控制装置设置有用于直接感测从发动机排出的废气的流量的排气流量传感器，用于感测或估计从发动机排出的废气的温度的排气温度估计装置，以及 排气热量估计装置，用于基于排气流量传感器的输出和排气温度推定装置的输出，估计从发动机排出的废气的热量。
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公开(公告)号：US20070220968A1
公开(公告)日：2007-09-27
申请号：US11657612
申请日：2007-01-25
申请人： Noboru Tokuyasu , Daisuke Terada , Kaori Kashio , Toshiki Otsuki , Katsuaki Fukatsu , Hiroshi Onuki , Jun Kubo
发明人： Noboru Tokuyasu , Daisuke Terada , Kaori Kashio , Toshiki Otsuki , Katsuaki Fukatsu , Hiroshi Onuki , Jun Kubo
IPC分类号： G01F1/68
CPC分类号： G01F1/6842 , G01F1/69 , G01F1/698
摘要： A thermal gas-flow measuring instrument has a first heating resistor placed in the gas to be measured. A temperature sensing resistor is positioned upstream or downstream of the first heating resistor and generates signals relating to the flow rate. Between the first heating resistor and the support for supporting the first heating resistor is a second heating resistor that is electrically insulated from the first heating resistor. The second heating resistor suppresses the heat being transferred from the first heating resistor to the support. A control circuit controls the temperatures of the first heating resistor and the second heating resistor so that the operational temperature range of the second heating resistor or the temperature range at the joint section between the first heating resistor and the second heating resistor is at or above the temperature at which water droplets evaporates to disappear by film boiling.
摘要翻译： 热气流量测仪具有放置在被测气体中的第一加热电阻。 温度感测电阻器位于第一加热电阻器的上游或下游，并产生与流量有关的信号。 在第一加热电阻器和用于支撑第一加热电阻器的支撑件之间是与第一加热电阻器电绝缘的第二加热电阻器。 第二加热电阻器抑制从第一加热电阻器传递到支架的热量。 控制电路控制第一加热电阻器和第二加热电阻器的温度，使得第二加热电阻器的工作温度范围或第一加热电阻器和第二加热电阻器之间的接合部分处的温度范围在等于或高于 水滴蒸发的温度通过薄膜沸腾消失。
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9.发明授权Thermal type flow meter including a secondary heating device to suppress heat transfer 失效热式流量计包括用于抑制热传递的二次加热装置公开(公告)号：US07587938B2
公开(公告)日：2009-09-15
申请号：US11657612
申请日：2007-01-25
申请人： Noboru Tokuyasu , Daisuke Terada , Kaori Kashio , Toshiki Otsuki , Katsuaki Fukatsu , Hiroshi Onuki , Jun Kubo
发明人： Noboru Tokuyasu , Daisuke Terada , Kaori Kashio , Toshiki Otsuki , Katsuaki Fukatsu , Hiroshi Onuki , Jun Kubo
IPC分类号： G01F1/68
CPC分类号： G01F1/6842 , G01F1/69 , G01F1/698
摘要： A thermal gas-flow measuring instrument has a first heating resistor placed in the gas to be measured. A temperature sensing resistor is positioned upstream or downstream of the first heating resistor and generates signals relating to the flow rate. Between the first heating resistor and the support for supporting the first heating resistor is a second heating resistor that is electrically insulated from the first heating resistor. The second heating resistor suppresses the heat being transferred from the first heating resistor to the support. A control circuit controls the temperatures of the first heating resistor and the second heating resistor so that the operational temperature range of the second heating resistor or the temperature range at the joint section between the first heating resistor and the second heating resistor is at or above the temperature at which water droplets evaporate to disappear by film boiling.
摘要翻译： 热气流量测仪具有放置在被测气体中的第一加热电阻。 温度感测电阻器位于第一加热电阻器的上游或下游，并产生与流量有关的信号。 在第一加热电阻器和用于支撑第一加热电阻器的支撑件之间是与第一加热电阻器电绝缘的第二加热电阻器。 第二加热电阻器抑制从第一加热电阻器传递到支架的热量。 控制电路控制第一加热电阻器和第二加热电阻器的温度，使得第二加热电阻器的工作温度范围或第一加热电阻器和第二加热电阻器之间的接合部分处的温度范围在等于或高于 水滴蒸发的温度通过薄膜沸腾消失。
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公开(公告)号：US07552633B2
公开(公告)日：2009-06-30
申请号：US11829443
申请日：2007-07-27
申请人： Noboru Tokuyasu , Hiroaki Hoshika , Kaori Kashio , Mituharu Osaka , Toshiki Ohtsuki , Yoshihiro Sukegawa
发明人： Noboru Tokuyasu , Hiroaki Hoshika , Kaori Kashio , Mituharu Osaka , Toshiki Ohtsuki , Yoshihiro Sukegawa
IPC分类号： G01F1/68
CPC分类号： G01F1/69 , F02D41/187 , F02M26/47 , F02M2026/003 , G01F1/692 , G01F1/696 , G01F1/699
摘要： A thermal type gas flowmeter comprising a sensor element which, in turn, comprises at least one first heating resistor, two or more resistors in fluid and a second heating resistor which is disposed between the first heating resistor and a housing supporting the sensor element. The first and second heating resistors are electrically independent from each other. A temperature sensing unit is provided between the first and second heating resistors. A temperature of the first or second heating resistor is controlled by a temperature sensed by the temperature sensing unit.
摘要翻译： 一种热式气体流量计，其包括传感器元件，传感器元件又包括至少一个第一加热电阻器，流体中的两个或更多个电阻器和设置在第一加热电阻器和支撑传感器元件的壳体之间的第二加热电阻器。 第一和第二加热电阻器彼此电独立。 温度检测单元设置在第一和第二加热电阻之间。 第一或第二加热电阻器的温度由温度检测单元感测的温度控制。
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