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1. 发明公开

EP0206215A1 Heat-wire type airflow quantity measuring apparatus. 失效
标题翻译： Hitzdraht-Luftströmungsmessgerät。
公开(公告)号：EP0206215A1
公开(公告)日：1986-12-30
申请号：EP86108220
申请日：1986-06-16
申请人： NIPPON DENSO CO
发明人： SATO YOSHIHISA , KINUGAWA MASUMI , AKIYAMA SUSUMU , YAMADA TOSHITAKA , MIZUNO TIAKI , SUZUKI ATSUSHI , SUGIURA KENGO
IPC分类号： G01F1/698 , G01P5/12 , G01F1/68 , G01P5/10
CPC分类号： G01F1/698 , G01F1/6986 , G01P5/12
摘要： A heater (12), which comprises an element whose resistance varies with changes in temperature, and a temperature element (13) are provided in the air intake pipe (11) of an engine. This heater and temperature element together with resistors (14, 15, 16) from a bridge circuit to which heating power is supplied via a transistor (17). An engine control unit (20) generates start signals (Tin) simultaneously with the rotation of the engine. A flip-flop circuit (19) is set by these start signals and, when set, the transistor (17) is turned on and the heating power rises. The output signal from the bridge circuit is supplied to a comparator (18) and the output signal of the comparator (18) resets the flip-flop circuit (19), which outputs a pulse-shaped signal representing the airflow quantity as a length of time. This pulse-shaped time signal is sent via a constant current circuit (21) to another comparator (22), where it is compared with a reference voltage and the output signal from the comparator (22), is supplied together with the above time signal to an exclusive OR circuit (25). This exclusive OR circuit (25), outputs a first and second pulse signal as the measurement output signal (Tout) synchronously with the rise and fall of the time signal and this signal is supplied to the engine control unit.
摘要翻译：在发动机的进气管（11）中设置有加热器（12），其包括其电阻随温度变化而变化的元件和温度元件（13）。该加热器和温度元件以及来自桥接电路的电阻器（14,15,16），通过晶体管（17）提供加热功率。发动机控制单元（20）与发动机的旋转同时产生起动信号（Tin）。触发器电路（19）由这些启动信号设定，当置位时，晶体管（17）导通，加热功率上升。来自桥接电路的输出信号被提供给比较器（18），并且比较器（18）的输出信号复位触发器电路（19），其将表示气流量的脉冲信号输出为时间。该脉冲状时间信号通过恒流电路（21）发送到另一比较器（22），与比较器（22）进行比较，并将来自比较器（22）的输出信号与上述时间信号到异或电路（25）。该异或电路（25）与时间信号的上升和下降同步输出作为测量输出信号（Tout）的第一和第二脉冲信号，并将该信号提供给发动机控制单元。

2. 发明专利

DE69207535T2 未知
公开(公告)号：DE69207535T2
公开(公告)日：1996-11-14
申请号：DE69207535
申请日：1992-09-22
申请人： NIPPON DENSO CO
发明人： DOUTA HISAYO , KINUGAWA MASUMI , SUZUKI ATSUSHI
IPC分类号： F02D41/10 , F02D41/14 , F02D41/16 , F02D41/24
摘要： An air-fuel ratio control system for an internal combustion engine utilizes a pre-stored standard relation between an air-fuel ratio indicative sensor signal and a standard air-fuel ratio indicative value for deriving the standard air-fuel ratio indicative value based on the sensor signal. The system further utilizes a pre-stored modified relation between the standard air-fuel ratio indicative value and a for-control air-fuel ratio indicative value for deriving the for-control air-fuel ratio indicative value based on the derived standard air-fuel ratio indicative value. In the modified relation, the for-control air-fuel ratio indicative value varies corresponding to a variation of the standard air-fuel ratio indicative value within a given range across the standard air-fuel ratio indicative value representing the stoichiometric air-fuel ratio. On the other hand, the for-control air-fuel ratio indicative value is held constant outside the given range. The system performs an air-fuel ratio feedback control based on a deviation between the derived for-control air-fuel ratio indicative value and a target air-fuel ratio indicative value.

3. 发明专利

DE69206286T2 未知
公开(公告)号：DE69206286T2
公开(公告)日：1996-04-18
申请号：DE69206286
申请日：1992-02-11
申请人： NIPPON DENSO CO
发明人： NISHIKAWA SEIITHIROU , KIKUCHI TOSHIAKI , KINUGAWA MASUMI
IPC分类号： F01N3/10 , F01N3/20 , F01N3/24 , F02B75/02 , F02D41/02 , F02D41/06 , F02D43/00 , F02P5/04 , F02P5/15
摘要： A control apparatus for speedily warming up a catalyst disposed within an exhaust pipe connected to an internal combustion engine. The control apparatus first determines a fuel injection amount and an ignition timing of the engine on the basis of an engine operating condition such as an intake air pressure of the engine and a rotational speed of the engine. The control apparatus is also responsive to temperature information of the catalyst for adjusting the fuel injection amount and the ignition timing in accordance with the catalyst temperature information. When the catalyst temperature does not reach the effectively emission-purifying temperature, the control apparatus alternately adjusts the fuel injection amount to a rich side and a lean side and further intermittently retards the ignition timing. This injection and ignition control operation allows acceleration of the warming-up of the catalyst to suppress the deterioration of the emissions from the engine.

4. 发明专利

DE69206286D1 未知
公开(公告)号：DE69206286D1
公开(公告)日：1996-01-11
申请号：DE69206286
申请日：1992-02-11
申请人： NIPPON DENSO CO
发明人： NISHIKAWA SEIITHIROU , KIKUCHI TOSHIAKI , KINUGAWA MASUMI
IPC分类号： F01N3/10 , F01N3/20 , F01N3/24 , F02B75/02 , F02D41/02 , F02D41/06 , F02D43/00 , F02P5/04 , F02P5/15
摘要： A control apparatus for speedily warming up a catalyst disposed within an exhaust pipe connected to an internal combustion engine. The control apparatus first determines a fuel injection amount and an ignition timing of the engine on the basis of an engine operating condition such as an intake air pressure of the engine and a rotational speed of the engine. The control apparatus is also responsive to temperature information of the catalyst for adjusting the fuel injection amount and the ignition timing in accordance with the catalyst temperature information. When the catalyst temperature does not reach the effectively emission-purifying temperature, the control apparatus alternately adjusts the fuel injection amount to a rich side and a lean side and further intermittently retards the ignition timing. This injection and ignition control operation allows acceleration of the warming-up of the catalyst to suppress the deterioration of the emissions from the engine.

5. 发明专利

DE3564311D1 ENGINE CONTROL APPARATUS 未知
公开(公告)号：DE3564311D1
公开(公告)日：1988-09-15
申请号：DE3564311
申请日：1985-05-20
申请人： NIPPON DENSO CO
发明人： AKIYAMA SUSUMU , ITO KATSUNORI , HIRABAYASHI YUZI , KINUGAWA MASUMI , OMORI NORIO
IPC分类号： F02D41/00 , F02D41/18 , F02D41/24 , F02D41/34 , F02D41/26 , G01F1/68
摘要： An engine control apparatus has an air flow rate measuring device (16) for measuring an intake air flow rate. A temperature sensing element (17) having a temperature char- acterisctic and constituting the device (16) is arranged in an intake pipe (13). The device (16) generates an output pulse signal having a pulse width T corresponding to the intake air flow rate. An engine control unit (18) has the one-dimensional map for storing the relationship between the engine speed N and the pulse width to of the signal corresponding to the air flow rate. This data to is read out from the one-dimensional map in accordance with the engine speed N. Subsequently, the data to is substracted from the data T to calculate a time duration t. The unit (18) also has a two-dimensional map for storing the relationship between each time duration t and the corresponding rate GIN in correspondence with each of the preset engine speeds. A corresponding rate G/N is read out from the two-dimensional map in response to the calculated time duration t. The resultant rate GIN is used to calculate fuel injection quantity.

6. 发明专利

GB2155660B ENGINE CONTROL SYSTEM 未知
公开(公告)号：GB2155660B
公开(公告)日：1988-04-20
申请号：GB8504479
申请日：1985-02-21
申请人： NIPPON DENSO CO
发明人： ABE TOMOAKI , FUJISAWA HIDEYA , OMORI NORIO , KINUGAWA MASUMI , ITO KATSUNORI , AKIYAMA SUSUMU , MIZUNO TIAKI , YAMADA TOSHITAKA
IPC分类号： F02D41/18 , F02D41/00

7. 发明专利

DE3226026A1 未知
公开(公告)号：DE3226026A1
公开(公告)日：1983-01-20
申请号：DE3226026
申请日：1982-07-12
申请人： NIPPON DENSO CO
发明人： TAKAO MITSUNORI , KINUGAWA MASUMI
IPC分类号： F02D41/04 , F02D41/02 , F02D41/26 , F02D45/00 , F02M7/00 , F02D35/00 , F02D5/02

8. 发明专利

DE69207535D1 未知
公开(公告)号：DE69207535D1
公开(公告)日：1996-02-22
申请号：DE69207535
申请日：1992-09-22
申请人： NIPPON DENSO CO
发明人： DOUTA HISAYO , KINUGAWA MASUMI , SUZUKI ATSUSHI
IPC分类号： F02D41/10 , F02D41/14 , F02D41/16 , F02D41/24
摘要： An air-fuel ratio control system for an internal combustion engine utilizes a pre-stored standard relation between an air-fuel ratio indicative sensor signal and a standard air-fuel ratio indicative value for deriving the standard air-fuel ratio indicative value based on the sensor signal. The system further utilizes a pre-stored modified relation between the standard air-fuel ratio indicative value and a for-control air-fuel ratio indicative value for deriving the for-control air-fuel ratio indicative value based on the derived standard air-fuel ratio indicative value. In the modified relation, the for-control air-fuel ratio indicative value varies corresponding to a variation of the standard air-fuel ratio indicative value within a given range across the standard air-fuel ratio indicative value representing the stoichiometric air-fuel ratio. On the other hand, the for-control air-fuel ratio indicative value is held constant outside the given range. The system performs an air-fuel ratio feedback control based on a deviation between the derived for-control air-fuel ratio indicative value and a target air-fuel ratio indicative value.

9. 发明专利

DE3344276C2 未知
公开(公告)号：DE3344276C2
公开(公告)日：1995-07-27
申请号：DE3344276
申请日：1983-12-07
申请人： NIPPON DENSO CO
发明人： ABE TOMOAKI , KINUGAWA MASUMI , HIROMASA SHUNICHIRO
IPC分类号： F02D41/34 , F02D41/18 , F02D45/00 , F02P5/15 , F02P5/14
摘要： In a method for correcting the controlled variable of an engine according to the present invention, the quantity of suction air is measured by means of a thermal type flowmeter. The magnitude of pulsation of the suction air is obtained on the basis of the differential or variation of the measured section air quantity. At the same time, a coefficient representing the susceptibility to the pulsation which depends on the layout of the thermal type flowmeter and the like and the engine speed is calculated. A final correction for correcting the controlled variable is obtained on the basis of the magnitude of the pulsation and the coefficient representing the susceptibility.

10. 发明专利

DE3567700D1 A CONTROL SYSTEM FOR AN ENGINE HAVING AIR PASSAGE 未知
公开(公告)号：DE3567700D1
公开(公告)日：1989-02-23
申请号：DE3567700
申请日：1985-10-22
申请人： NIPPON DENSO CO
发明人： SATOH YOSHIHISA , AKIYAMA SUSUMU , ITO KATSUNORI , INA KATSUHIRO , KINUGAWA MASUMI , SUZUKI ATSUSHI
IPC分类号： F02D41/18 , F02D41/34 , F02D41/22 , F02D41/28
摘要： An engine control system has a heater (12) and a temperature measuring element (13) with a temperature-resistance characteristic. The heater (12) and element (13) are provided in the intake pipe (11) of an engine. Heating, which is initiated by a start pulse signal (Tin) generated by an engine control unit (20) in synchronism with engine rotation is supplied to the heater (12) through a transistor (17). When the heater temperature has reached a reference temperature preset in accordance with the intake air temperature measured by the element (13), a comparator (18) generates an output to deenergize the heater (12). The period of supplying the heating power is represented by a pulse signal (Tout) from a flip-flop (19). This pulse signal is supplied as an airflow measurement signal to the engine control unit (20). The engine control unit (20) calculates the basic fuel injection quantity and determines (201 & 202) if the starting of the pulse signal (Tout) received by the control unit (20) falls within a predetermined period from the starting of the start pulse signal (Tin). If the starting has fallen outside the predetermined period, the output signal is considered to have been generated in response to a noise signal. In this case, a normal output signal next to the output signal generated in response to the noise signal is corrected.

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