公开(公告)号：US20100275685A1

公开(公告)日：2010-11-04

申请号：US12769291

申请日：2010-04-28

申请人： Keiji HANZAWA ,  Yoshihiko Akagi ,  Takuto Okamoto ,  Kohei Suseki ,  Takeshi Morino

发明人： Keiji HANZAWA ,  Yoshihiko Akagi ,  Takuto Okamoto ,  Kohei Suseki ,  Takeshi Morino

IPC分类号： G01F1/69

CPC分类号： G01F1/6965 ,  G01F1/72

摘要： An object of the invention is to provide a thermal air flowmeter which can reduce a detection error occurring during pulsating air flow due to a difference of response between rising and falling of detected flow or due to air flow dependence of response. A thermal air flowmeter 1 includes a heat-generating resistor 7 which heats liquid, a heating drive circuit 5 which causes current to flow in the heat-generating resistor 7 and thereby controls heating of the heat-generating resistor 7, and a temperature-sensitive resistor 9 which detects a temperature of the fluid heated by the heat-generating resistor 7. The thermal air flowmeter 1 detects a flow Q of the liquid based on the amount of heat of the liquid heated by the heat-generating resistor 7. Further included are: flow correction value calculating means 17 which calculates a flow correction value ca based on a variation dQ/dt of the detected flow Q and on a flow correction coefficient a set dependent on the detected flow Q; and flow correction means 18 which corrects the detected flow Q based on the flow correction value ca.

摘要翻译： 本发明的目的是提供一种热空气流量计，其可以减少由于检测到的流量的上升和下降之间的响应差异或由于响应的气流依赖性而在脉动空气流中发生的检测误差。 热空气流量计1包括加热液体的发热电阻器7，使发热电阻器7中的电流流动并由此控制发热电阻器7的加热的加热驱动电路5以及对温度敏感的热敏电阻 电阻器9，其检测由发热电阻器7加热的流体的温度。热空气流量计1基于由发热电阻器7加热的液体的热量来检测液体的流量Q。还包括 是：流量校正值运算单元17，其基于检测出的流量Q的变动量dQ / dt，根据检测出的流量Q对流量校正系数a计算流量校正值ca; 以及流量校正装置18，其基于流量校正值ca校正检测到的流量Q。

公开(公告)号：US06810859B2

公开(公告)日：2004-11-02

申请号：US10618739

申请日：2003-07-15

申请人： Yoshihiko Akagi ,  Hiroshi Hirayama ,  Takuto Okamoto ,  Kazuhiko Miya ,  Hatsuo Nagaishi ,  Tetsuya Iwasaki

发明人： Yoshihiko Akagi ,  Hiroshi Hirayama ,  Takuto Okamoto ,  Kazuhiko Miya ,  Hatsuo Nagaishi ,  Tetsuya Iwasaki

IPC分类号： F00M5100

CPC分类号： G01F1/6965 ,  F02D41/187 ,  F02D2200/0414 ,  F02D2200/503 ,  G01F1/69 ,  G01F1/696

摘要： Disclosed here is a control unit employed for an internal combustion engine and provided with air flow sensor output correcting element capable of correcting a detected voltage error to occur in the air flow sensor according to a surge voltage and a supply voltage at each actuation of the thermal type air flow sensor. The thermal type air flow sensor output correcting element includes surge time measuring element for measuring a surge time in a value detected in the thermal type air flow sensor at the time of the sensor power on and supply voltage detecting means. The output correcting element thus calculates a warming-up characteristic correction amount for the thermal type air flow sensor according to the measured surge time and the detected supply voltage.

摘要翻译： 这里公开了一种用于内燃机并具有空气流量传感器输出校正元件的控制单元，其能够根据在每次致动热量时的浪涌电压和电源电压来校正在气流传感器中发生的检测到的电压误差 型空气流量传感器。 热式空气流量传感器输出校正元件包括浪涌时间测量元件，用于在传感器电源接通时和测量电源电压检测装置时测量在热式空气流量传感器中检测到的值的浪涌时间。 因此，输出校正元件根据测量的浪涌时间和检测到的电源电压来计算热式空气流量传感器的预热特性校正量。

公开(公告)号：US08340926B2

公开(公告)日：2012-12-25

申请号：US12813111

申请日：2010-06-10

申请人： Yoshihiko Akagi ,  Takuto Okamoto

发明人： Yoshihiko Akagi ,  Takuto Okamoto

IPC分类号： G06F19/00

CPC分类号： F02D41/18 ,  G01F1/6965 ,  G01F1/72

摘要： An internal combustion engine control apparatus according to the present invention includes storage for storing a plurality of air flow rate conversion tables T1 and T2 used to convert a signal of a heating resistor 2 to an air flow rate, a selector for selecting a conversion table to be referred to from the plurality of conversion tables T1 and T2 stored, and a converter for converting a signal of the heating resistor into an air flow rate by referring to the conversion table selected by the selector. The selector performs selection of the conversion table according to a state value, which directly or indirectly indicates the state of air flow pulsation generated in a passage.

摘要翻译： 根据本发明的内燃机控制装置包括用于存储用于将加热电阻器2的信号转换为空气流量的多个空气流量转换表T1和T2的存储器，用于选择转换表的选择器 从存储的多个转换表T1和T2中引用，以及用于通过参考由选择器选择的转换表将加热电阻器的信号转换成空气流量的转换器。 选择器根据状态值执行转换表的选择，该状态值直接或间接地指示通道中产生的气流脉动的状态。

公开(公告)号：US20110004422A1

公开(公告)日：2011-01-06

申请号：US12813111

申请日：2010-06-10

申请人： Yoshihiko AKAGI ,  Takuto Okamoto

发明人： Yoshihiko AKAGI ,  Takuto Okamoto

IPC分类号： G06F19/00 ,  G01F1/688

CPC分类号： F02D41/18 ,  G01F1/6965 ,  G01F1/72

摘要： To provide an internal combustion engine control apparatus which is capable of obtaining an accurate air flow rate by using a thermal air flow rate detecting apparatus at the time when pulsation is caused. The internal combustion engine control apparatus according to the present invention is featured by including: storage means for storing a plurality of air flow rate conversion tables T1 and T2 used to convert a signal of a heating resistor 2 to an air flow rate; selection means for selecting a conversion table to be referred to from the plurality of conversion tables T1 and T2 stored in the storage means; and conversion means for converting a signal of the heating resistor 2 into an air flow rate by referring to the conversion table selected by the selection means, and is featured in that the selection means performs selection of the conversion table according to a state value which directly or indirectly indicates the state of air flow pulsation generated in a passage 64.

摘要翻译： 提供一种内燃机控制装置，其能够在发生脉动时通过使用热空气流量检测装置获得准确的空气流量。 根据本发明的内燃机控制装置的特征在于包括：存储装置，用于存储用于将加热电阻器2的信号转换成空气流量的多个空气流量转换表T1和T2; 选择装置，用于从存储在存储装置中的多个转换表T1和T2中选择要参考的转换表; 以及转换装置，用于通过参考由选择装置所选择的转换表将加热电阻器2的信号转换成空气流量，其特征在于，选择装置根据直接的状态值进行转换表的选择 或间接地指示在通道64中产生的气流脉动的状态。

公开(公告)号：US07882735B2

公开(公告)日：2011-02-08

申请号：US12769291

申请日：2010-04-28

申请人： Keiji Hanzawa ,  Yoshihiko Akagi ,  Takuto Okamoto ,  Kohei Suseki ,  Takeshi Morino

发明人： Keiji Hanzawa ,  Yoshihiko Akagi ,  Takuto Okamoto ,  Kohei Suseki ,  Takeshi Morino

IPC分类号： G01F1/68

CPC分类号： G01F1/6965 ,  G01F1/72

摘要： An object of the invention is to provide a thermal air flowmeter which can reduce a detection error occurring during pulsating air flow due to a difference of response between rising and falling of detected flow or due to air flow dependence of response. A thermal air flowmeter 1 includes a heat-generating resistor 7 which heats liquid, a heating drive circuit 5 which causes current to flow in the heat-generating resistor 7 and thereby controls heating of the heat-generating resistor 7, and a temperature-sensitive resistor 9 which detects a temperature of the fluid heated by the heat-generating resistor 7. The thermal air flowmeter 1 detects a flow Q of the liquid based on the amount of heat of the liquid heated by the heat-generating resistor 7. Further included are: flow correction value calculating means 17 which calculates a flow correction value ca based on a variation dQ/dt of the detected flow Q and on a flow correction coefficient a set dependent on the detected flow Q; and flow correction means 18 which corrects the detected flow Q based on the flow correction value ca.

摘要翻译： 本发明的目的是提供一种热空气流量计，其可以减少由于检测到的流量的上升和下降之间的响应差异或由于响应的气流依赖性而在脉动空气流中发生的检测误差。 热空气流量计1包括加热液体的发热电阻器7，使发热电阻器7中的电流流动并由此控制发热电阻器7的加热的加热驱动电路5以及对温度敏感的热敏电阻 电阻器9，其检测由发热电阻器7加热的流体的温度。热空气流量计1基于由发热电阻器7加热的液体的热量来检测液体的流量Q。还包括 是：流量校正值运算单元17，其基于检测出的流量Q的变动量dQ / dt，根据检测出的流量Q对流量校正系数a计算流量校正值ca; 以及流量校正装置18，其基于流量校正值ca校正检测到的流量Q。