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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：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：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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4.发明授权Thermal flow meter, thermal flow meter control method, and sensor element of thermal flow meter 有权热流量计，热流量计控制方法和热流量计传感器元件公开(公告)号：US07814785B2
公开(公告)日：2010-10-19
申请号：US12242347
申请日：2008-09-30
IPC分类号： G01F1/68
摘要： A thermal flow meter corrects flow rate detection errors produced by vaporization of liquid phase components included in a gas to be measured. The thermal flow meter includes a correction circuit 500 that applies respectively different predetermined voltages to heating resistors consisting of first heating resistor Rh1 and second heating resistor Rh2 of a sensor element disposed in the gas to be measured to set a first temperature state and a second temperature state, calculates a first flow rate value Q1 of the gas to be measured in the first temperature state and a second flow rate value Q2 of the gas to be measured in the second temperature state, and calculates a flow rate correction value ΔQ based on a ratio (Q1/Q2) between the first flow rate value and second flow rate value or a fourth-power value (Q1/Q2)4 of the ratio to correct a flow rate of the gas to be measured.
摘要翻译： 热流量计校正由待测气体中包含的液相成分汽化产生的流量检测误差。 热流量计包括校正电路500，该校正电路500分别对设置在待测气体中的传感器元件的第一加热电阻器Rh1和第二加热电阻器Rh2组成的加热电阻器施加不同的预定电压，以设定第一温度状态和第二温度 状态，在第二温度状态下，计算第一温度状态下的被测量气体的第一流量值Q1和待测气体的第二流量值Q2，并计算流量校正值＆Dgr; Q 在第一流量值和第二流量值之间的比率（Q1 / Q2）或校正被测量气体的流量的比率的第四功率值（Q1 / Q2）4。
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5.发明申请Thermal Flow Meter, Thermal Flow Meter Control Method, and Sensor Element of Thermal Flow Meter 有权热流量计，热流量计控制方法和热流量计传感器元件公开(公告)号：US20090090177A1
公开(公告)日：2009-04-09
申请号：US12242347
申请日：2008-09-30
IPC分类号： G01F1/68
摘要： A thermal flow meter corrects flow rate detection errors produced by vaporization of liquid phase components included in a gas to be measured. The thermal flow meter includes a correction circuit 500 that applies respectively different predetermined voltages to heating resistors consisting of first heating resistor Rh1 and second heating resistor Rh2 of a sensor element disposed in the gas to be measured to set a first temperature state and a second temperature state, calculates a first flow rate value Q1 of the gas to be measured in the first temperature state and a second flow rate value Q2 of the gas to be measured in the second temperature state, and calculates a flow rate correction value ΔQ based on a ratio (Q1/Q2) between the first flow rate value and second flow rate value or a fourth-power value (Q1/Q2)4 of the ratio to correct a flow rate of the gas to be measured.
摘要翻译： 热流量计校正由待测气体中包含的液相成分汽化产生的流量检测误差。 热流量计包括校正电路500，该校正电路500分别对设置在待测气体中的传感器元件的第一加热电阻器Rh1和第二加热电阻器Rh2组成的加热电阻器施加不同的预定电压，以设定第一温度状态和第二温度 状态，在第二温度状态下，计算第一温度状态下的被测量气体的第一流量值Q1和待测量气体的第二流量值Q2，并基于 第一流量值和第二流量值之间的比率（Q1 / Q2）或比率的第四功率值（Q1 / Q2）4，以校正待测气体的流量。
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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：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：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：US20090151445A1
公开(公告)日：2009-06-18
申请号：US12333879
申请日：2008-12-12
IPC分类号： G01F1/68
CPC分类号： G01F1/6842 , G01F1/692
摘要： Disclosed herein is a fluid flow rate measurement apparatus which prevents accumulation of pollutional substances in a sub-passage to enable high-accuracy fluid flow rate measurement.A heater pattern 34 is formed on the surface of a cylindrical rod 3. When electricity is conducted in the heater pattern 34 and heat is generated, the heat is transmitted to the sub-passage 26 through an insulating layer. The heat is gradually transmitted up to the leading end of the sub-passage 26, and burns out pollutional substances adhering to the sub-passage 26. In this way, accumulation in the sub-passage 26 of pollutional substances can be prevented, thus attaining a fluid flow rate measurement apparatus that enables high-accuracy fluid flow rate measurement.
摘要翻译： 本文公开了一种流体流量测量装置，其防止污染物质在子通道中积聚，以实现高精度的流体流速测量。 加热器图案34形成在圆柱形棒3的表面上。当在加热器图案34中传导电力并产生热量时，热量通过绝缘层传递到子通道26。 热量逐渐传递到子通道26的前端，并且燃烧附着在副通路26上的污染物质。这样就可以防止污染物质的副通道26中的积聚，从而达到 能够进行高精度流体流量测量的流体流量测量装置。
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公开(公告)号：US07677097B2
公开(公告)日：2010-03-16
申请号：US12128323
申请日：2008-05-28
申请人： Noboru Tokuyasu , Hiroaki Hoshika , Kaori Kashio , Keiji Hanzawa
发明人： Noboru Tokuyasu , Hiroaki Hoshika , Kaori Kashio , Keiji Hanzawa
IPC分类号： G01F1/68
摘要： In a gas flowmeter in which a rod and a sensor element are formed as a single body, for preventing heat of the sensor element from flowing into a sensor probe through a substrate (rod) so as to suppress considerable power consumption, and for obtaining a necessary response speed with respect to a flow rate of gas to be measured or a change in temperature, the gas column (rod) is made of an insulating material on a center axis of the sensing probe and is formed with a conductor pattern on its surface, and the sensing probe connects the sensor element disposed in a pipe through which the gas to be measured flows and a harness terminal through the conductor on the surface of the rod, so as to measure a gas flow rate by using the sensing prove.
摘要翻译： 在其中杆和传感器元件形成为单体的气体流量计中，为了防止传感器元件通过基板（棒）流入传感器探针中的热量，以便抑制相当大的功率消耗，并且为了获得 相对于待测气体的流量或温度变化的必要响应速度，气柱（棒）由感测探针的中心轴上的绝缘材料制成，并且在其表面上形成有导体图案 并且感测探头将设置在待测气体的管道中的传感器元件和通过杆表面上的导体的线束端子连接，以便通过使用感测证明来测量气体流量。
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