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11. 发明公开

EP2065587A2 Engine control system and control method thereof 审中-公开
标题翻译：汽车系统与Steuerungsverfahrendafür
公开(公告)号：EP2065587A2
公开(公告)日：2009-06-03
申请号：EP08020808.5
申请日：2008-12-01
申请人： Hitachi Ltd. and Hitachi-LG Data Storage, Inc.
发明人： Yamaoka, Shiro , Sukegawa, Yoshihiro , Tokuyasu, Noboru , Hoshika, Hiroaki , Kashio, Kaori
IPC分类号： F02D21/08 , F02D41/14 , F02D41/22
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 19 is in a transitional state, which often results in torque fluctuations and deteriorated exhaust gas.
A sensor 12 for directly detecting an EGR flow rate is disposed in an EGR path 9. An EGR rate and in-cylinder oxygen concentration are calculated from the output value of that sensor 12. 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19的运转状态处于过渡状态时，特别是在经常导致转矩波动和废气劣化的情况下，再次循环排气的发动机的EGR率实时估计的精度降低。用于直接检测EGR流量的传感器12设置在EGR通路9中。根据该传感器12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，该计算在由低负载和小的旋转波动表征的稳定运行状态和包括加速和减速的过渡运行状态下适当地切换。由此，能够在大范围的发动机运转条件下正确地估计EGR率和缸内氧浓度，能够避免转矩波动和排气恶化。

12. 发明公开

EP2058633A1 Thermal type flow sensor 有权
公开(公告)号：EP2058633A1
公开(公告)日：2009-05-13
申请号：EP09001884.7
申请日：2007-04-12
申请人： Hitachi Ltd.
发明人： Sukegawa, Yoshihiro , Tokuyasu, Noboru , Kashio, Kaori , Terada, Daisuke
IPC分类号： G01F1/69 , G01F1/692 , G01F1/699 , G01F1/696
CPC分类号： G01F1/69 , G01F1/692 , G01F1/696 , G01F1/6983 , G01F1/699
摘要： The invention relates to a flow rate measuring element (1) of a thermal type flow sensor is placed in the fluid to be measured. The element includes: a first heating resistor (7) for measuring a flow rate; a second heating resistor (10) for heating a support (5) for the first heating resistor (7); and current control circuits (101, 102) and which control heating resistor supply current so that the temperature of the second heating resistor (10) is higher than the temperature of the first heating resistor (7).

13. 发明公开

EP2045584A2 Thermal flow meter control method 有权
标题翻译： Steuerverfahrenfüreinen thermischen Durchflussmesser
公开(公告)号：EP2045584A2
公开(公告)日：2009-04-08
申请号：EP08017400.6
申请日：2008-10-02
申请人： Hitachi Ltd.
发明人： Sukegawa, Yoshihiro , Tokuyasu, Noboru , Hoshika, Hiroaki , Kashio, Kaori
IPC分类号： G01F1/684 , G01F1/698
CPC分类号： G01F1/684 , G01F1/698 , G01F1/74 , G01F15/02 , G01F15/04
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分别对设置在被测量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，并计算出基于第一流量值和第二流量值之间的比率（Q1 / Q2）或校正要测量的气体的流量的比率的第四功率值（Q1 / Q2）4。

14. 发明授权

EP2072973B1 Fluid flow rate measurement apparatus 有权
标题翻译：流体流量测量装置
公开(公告)号：EP2072973B1
公开(公告)日：2017-11-29
申请号：EP08021635.1
申请日：2008-12-12
申请人： Hitachi, Ltd.
发明人： Hoshika, Hiroaki , Tokuyasu, Noboru , Kokubu, Takanori , Kashio, Kaori
IPC分类号： G01F1/684 , G01F1/692
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.

15. 发明授权

EP2045584B1 Thermal flow meter control method 有权
标题翻译：用于热式流量计的控制方法
公开(公告)号：EP2045584B1
公开(公告)日：2016-03-09
申请号：EP08017400.6
申请日：2008-10-02
申请人： Hitachi, Ltd.
发明人： Sukegawa, Yoshihiro , Tokuyasu, Noboru , Hoshika, Hiroaki , Kashio, Kaori
IPC分类号： G01F1/684 , G01F1/698
CPC分类号： G01F1/684 , G01F1/698 , G01F1/74 , G01F15/02 , G01F15/04

16. 发明公开

EP1998149A1 Gas flowmeter and engine control system 审中-公开
标题翻译： Gasdurchflussmesser和Motorsteuersystem
公开(公告)号：EP1998149A1
公开(公告)日：2008-12-03
申请号：EP08009747.0
申请日：2008-05-28
申请人： Hitachi Ltd.
发明人： Tokuyasu, Noboru , Hoshika, Hiroaki , Kashio, Kaori , Hanzawa, Keiji
IPC分类号： G01F1/684 , G01F15/18
CPC分类号： G01F1/699 , G01F1/688
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，用于防止传感器元件通过基底（杆）流入传感器探针的热量，以便抑制相当大的功率消耗，并且为了获得相对于要测量的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线束端子通过杆的表面上的导体连接，以便通过使用感测证明来测量气体流量。

17. 发明公开

EP1882913A1 Thermal type gas flowmeter 审中-公开
标题翻译：热式气体流量计
公开(公告)号：EP1882913A1
公开(公告)日：2008-01-30
申请号：EP07014909.1
申请日：2007-07-30
申请人： Hitachi, Ltd.
发明人： Tokuyasu, Noboru , Hoshika, Hiroaki , Kashio, Kaori , Osaka, Mituharu , Ohtsuki, Toshiki , Sukegawa, Yoshihiro
IPC分类号： G01F1/69 , G01F1/692 , G01F1/699
CPC分类号： G01F1/69 , F02D41/187 , F02M26/47 , F02M2026/003 , G01F1/692 , G01F1/696 , G01F1/699
摘要： The present invention relates to a thermal type gas flowmeter comprising a sensor element which, in turn, comprises at least one first heating resistor (HWm), two or more resistors in fluid (CW) and a second heating resistor (HWs) 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：本发明涉及包括传感器元件的热式气体流量计，该传感器元件又包括至少一个第一加热电阻器（HWm），两个或更多个流体电阻器（CW）和第二加热电阻器（HWs），该第二加热电阻器在第一加热电阻器与支撑传感器元件的壳体之间。第一和第二加热电阻器彼此电独立。在第一和第二加热电阻器之间提供温度感测单元。第一或第二加热电阻器的温度由温度感测单元感测的温度控制。

18. 发明公开

EP1845345A3 Thermal type flow sensor 有权
标题翻译：热式流量传感器
公开(公告)号：EP1845345A3
公开(公告)日：2008-01-02
申请号：EP07007526.2
申请日：2007-04-12
申请人： Hitachi, Ltd.
发明人： Sukegawa, Yoshihiro , Tokuyasu, Noboru , Kashio, Kaori , Terada, Daisuke
IPC分类号： G01F1/69 , G01F1/692 , G01F1/699
CPC分类号： G01F1/69 , G01F1/692 , G01F1/696 , G01F1/6983 , G01F1/699
摘要： The invention relates to a flow rate measuring element (1) of a thermal type flow sensor is placed in the fluid to be measured. The element includes: a first heating resistor (7) for measuring a flow rate; a second heating resistor (10) for heating a support (5) for the first heating resistor (7); and current control circuits (101, 102) and which control heating resistor supply current so that the temperature of the second heating resistor (10) is higher than the temperature of the first heating resistor (7).
摘要翻译：本发明涉及一种将热式流量传感器的流量测量元件（1）置于待测流体中。该元件包括：用于测量流量的第一加热电阻器（7）用于加热第一加热电阻器（7）的支撑件（5）的第二加热电阻器（10）; 和电流控制电路（101,102），并控制加热电阻器供电电流，使得第二加热电阻器（10）的温度高于第一加热电阻器（7）的温度。

19. 发明公开

EP1835267A2 Thermal gas-flow measuring instrument 审中-公开
标题翻译： ThermischesGasströmungsmessgerät
公开(公告)号：EP1835267A2
公开(公告)日：2007-09-19
申请号：EP07001343.8
申请日：2007-01-22
申请人： HITACHI, LTD.
发明人： Tokuyasu, Noboru , Terada, Daisuke , Kashio, Kaori , Otsuki, Toshiki , Fukatsu, Katsuaki , Onuki, Hiroshi , Kubo, Jun
IPC分类号： G01F1/684 , G01F1/69 , G01F1/698
CPC分类号： G01F1/6842 , G01F1/69 , G01F1/698
摘要： To realize a thermal gas-flow measuring instrument which can suppress the influence of pollution of a support of heating resistor on the output characteristics independent of the use environment. The first heating resistor (21) is placed in the gas to be measured. The temperature sensing resistor (24) which is positioned at upstream side or downstream side of the first heating resistor (21) generates signals relating to the flow rate. Between the first heating resistor (21) and the support (6) for supporting the first heating resistor (21), the second heating resistor (22) is positioned in a state of electrically insulated from the first heating resistor (21). The second heating resistor (22) suppresses the heat being transferred from the first heating resistor (21) to the support (2). The control circuit (31) controls the temperatures of the first heating resistor (21) and the second heating resistor (22) so as the operational temperature range of the second heating resistor (22) or the temperature range at the joint section between the first heating resistor (21) and the second heating resistor (22) to become at or above the temperature at which the water droplet evaporates to disappear by the film boiling.
摘要翻译：实现能够抑制加热电阻器的支撑体的污染对独立于使用环境的输出特性的热气流量测量仪器。将第一加热电阻器（21）放置在要测量的气体中。位于第一加热电阻器（21）的上游侧或下游侧的温度感测电阻器（24）产生与流量有关的信号。在第一加热电阻器（21）和用于支撑第一加热电阻器（21）的支撑件（6）之间，第二加热电阻器（22）位于与第一加热电阻器（21）电绝缘的状态。第二加热电阻器（22）抑制从第一加热电阻器（21）传递到支撑件（2）的热量。控制电路（31）控制第一加热电阻器（21）和第二加热电阻器（22）的温度，以及第二加热电阻器（22）的工作温度范围或第一加热电阻器加热电阻器（21）和第二加热电阻器（22）变成等于或高于水滴蒸发的温度以通过薄膜沸腾消失。

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