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71. 发明专利

JPH04171259A EXHAUST GAS REFLUX QUANTITY CONTROLLER 失效
公开(公告)号：JPH04171259A
公开(公告)日：1992-06-18
申请号：JP29731490
申请日：1990-11-05
申请人： HITACHI LTD
发明人： OSUGA MINORU , NOGI TOSHIJI , FUJIEDA MAMORU , OYAMA TAKASHIGE
IPC分类号： F02D45/00 , F02M25/07
摘要： PURPOSE:To reduce fuel consumption and purify exhaust gas by constituting an exhaust gas reflux quantity controller of an intake passage for supplying mixture into an internal combustion engine, an exhaust gas passage for exhausting exhaust gas from the internal combustion engine, and an exhaust gas reflux passage for supplying a part of the exhaust gas flowing in the exhaust gas passage into the vicinity of the intake valve. CONSTITUTION:A passage 3 is opened in the vicinity of an intake valve 5 of an intake pipe 2. An opening portion 6 is disposed near the intake valve 5. Signals of an intake quantity sensor 7 and oxygen sensor 8 are input into a controller 9, and a quantity of exhaust gas reflux(EGR) is detected. An optimum EGR quantity is obtained, which is measured by a control valve 4, to be supplied. Exhaust gas is introduced into the intake pipe 2 through the passage 3 connecting an exhaust pipe 1 to the intake pipe 2, thereby performing EGR. Therefore, fuel consumption and an NOx exhaust quantity can be reduced.

72. 发明专利

JPH0412167A FUEL INJECTION DEVICE 失效
公开(公告)号：JPH0412167A
公开(公告)日：1992-01-16
申请号：JP11559690
申请日：1990-05-01
申请人： HITACHI LTD
发明人： OSUGA MINORU , NOGI TOSHIJI , FUJIEDA MAMORU , OYAMA TAKASHIGE
IPC分类号： F02D41/04 , F02M51/08 , F02M69/00 , F02M69/04
摘要： PURPOSE:To unify mixture distribution in a combustion chamber in the whole operation territory by controlling fuel injecting direction at least at either operation of low load or high load, and providing a direction control means to direct fuel injection direction to the same position of an intake valve at both operating load. CONSTITUTION:Fuel injected from a fuel injection valve 1 fixed on an intake pipe 21 is burnt by spark with an ignition plug 4, after flowing in a combustion chamber 3 through an intake valve 2. Air flow bypassing a throttle valve 6 is introduced to the fuel injection part 5 of the fuel injection valve 1 through a passage 7. The injecting direction of fuel spray injected from the fuel injection valve 1 is controlled by the air flow passing through the air passage 7 according to the operating condition of an engine 10. Namely, an air passage 19 is formed in the main body 5a of the fuel injection part 5, at high load operation the air flow passing through the passage 7 is introduced to this air passage 19, made collide with fuel injected from a metering orifice 18, and the injecting direction of fuel is bent.

73. 发明专利

JPH03253734A AIR-FUEL RATIO CONTROLLER 失效
公开(公告)号：JPH03253734A
公开(公告)日：1991-11-12
申请号：JP4928390
申请日：1990-03-02
申请人： HITACHI LTD
发明人： OSUGA MINORU , FUJIEDA MAMORU , OYAMA TAKASHIGE
IPC分类号： F02D41/04 , F02D43/00 , F02D45/00 , F02P5/10 , F02P5/15
摘要： PURPOSE:To stabilize combustion simply and surely by calculating a quantity of gas remaining in a combustion chamber and causing main unstable factor of combustion, and compensating the fuel quantity and an ignition timing. CONSTITUTION:Detection values of an air quantity sensor 1 and an intake pressure sensor 3 which detects pressure in an intake pipe 2 are inputted to a control unit 4, respectively. A quantity of remaining gas is calculated, and a fuel quantity and an ignition timing are respectively compensated based on the calculation value. An injection valve 5 is controlled based on the compensated fuel quantity, and an ignition plug 6 is controlled based on the compensated ignition timing in the same way. The engine speed is calculated in the control unit 4 based on a detection value of a crank angle sensor 7 so that the fuel quantity and the ignition timing are determined. The air-fuel ratio and the ignition timing are compensated based on the remaining gas quantity which is the main unstable factor of combustion so as to stabilize the combustion.

74. 发明专利

JPH0378540A PURIFYING DEVICE OF EXHAUST GAS FROM TWO-CYCLE ENGINE 失效
公开(公告)号：JPH0378540A
公开(公告)日：1991-04-03
申请号：JP21135589
申请日：1989-08-18
申请人： HITACHI LTD
发明人： FUJIEDA MAMORU , OYAMA TAKASHIGE
IPC分类号： F02D13/02 , F02B75/02
摘要： PURPOSE:To prevent new charge air from its outflow to an exhaust pipe by providing an exhaust control valve in the exhaust pipe and controlling this valve by one of the operative parameters of an engine and by a plurality of signals, in the case of the engine in which fuel is directly injected into a cylinder and ignited by a spark plug. CONSTITUTION:In a two-cycle engine in which air is pressurized by a supercharger 15 and supplied into a cylinder 1 when an intake valve 4 is opened, it is opened before a piston 2 reaches the bottom dead center, thus combustion gas is scavenged by new charge air, introduced into the cylinder 1, and discharged from an exhaust pipe 13. When the piston 2, which passes the bottom dead center, is started to rise, an exhaust valve 5 and the intake valve 4 are successively closed with fuel injected into the cylinder 1 from an injection valve 6. In the engine thus obtained, an exhaust control valve 8 is arranged in the exhaust pipe 13 and closed, at the time of a partial load where purifying performance of a catalytic converter rhodium 12 is important, so as to prevent the new charge air from its outflow.

75. 发明专利

JPH01113551A CALIBRATION METHOD FOR FUEL SUPPLY SYSTEM 失效
公开(公告)号：JPH01113551A
公开(公告)日：1989-05-02
申请号：JP26816887
申请日：1987-10-26
申请人： HITACHI LTD
发明人： FUJIEDA MAMORU , NISHIMURA YUTAKA
IPC分类号： F02D41/18 , F02D41/00 , F02D41/14 , F02D45/00
摘要： PURPOSE:To improve reliability of control by increasing fuel by a designated quantity when specified calibration conditions are established and calibrating an injection characteristic by a change of feedback coefficient of air-fuel ratio in a system where air-fuel ratio is feedback-controlled. CONSTITUTION:In a controller 6 to which output signals of an air quantity sensor 1, a rotational frequency sensor 7 and an air-fuel ratio sensor 5 are input, a basic fuel injection quantity is computed and the basic fuel injection quantity is corrected according to an air-fuel ratio feedback correction coefficient to obtain the final fuel injection quantity to control the valve opening time of an injection valve 3. In such a fuel supply system, in order to compensate for a change of the air quantity sensor 1 and an injection valve 3, the fuel subjection quantity is increased by a fixed quantity when specified calibration conditions are established. According to the variation of air-fuel ratio feedback coefficient which changes with such increase, the injection characteristic is calibrated.

76. 发明专利

JPS61235218A ENGINE MOUNT DEVICE FOR AUTOMOBILE 失效
公开(公告)号：JPS61235218A
公开(公告)日：1986-10-20
申请号：JP7645785
申请日：1985-04-12
申请人： HITACHI LTD
发明人： FUJIEDA MAMORU , OOYAMA TAKASHIGE
IPC分类号： B60K5/02 , B60K5/12 , F16F15/02
摘要： PURPOSE:To reduce the extent of engine vibrations without entailing any problem of a drop in accelerability, etc., by setting up a hydraulic cylinder between an engine and a chassis, while reducing the engine vibrations at at the time of acceleration and deceleration with the adjustment of engine supporting force. CONSTITUTION:Hydraulic cylinders 12a and 12b are set up between an engine 1 and a chassis 6, and pressure oil is fed or discharged to or from these cylinders each by a hydraulic selector valve 13. And, solenoid valves 14a and 14b are installed in this hydraulic selector valve 13, while a spool valve 15 is selected by a signal out of a control circuit 18. In addition, a hydraulic setting signal to be outputted out of an operator 16 is inputted into this control circuit 18. Likewise, the operator 16 operates the hydraulic setting signal from each signal of throttle valve opening theta, an engine speed (n) and a transmission ratio nt. With this constitution, the hydraulic pressure in these hydraulic cylinders 12a and 12b is controlled according to a running state of the engine 1, whereby vibrations at the time of acceleration and deceleration are reduced with adjustment of supporting force for the engine 1.

77. 发明专利

JPS61229622A OUTPUT POWER CONTROL DEVICE FOR AUTOMOBILE 失效
公开(公告)号：JPS61229622A
公开(公告)日：1986-10-13
申请号：JP7178385
申请日：1985-04-04
申请人： HITACHI LTD
发明人： FUJIEDA MAMORU , OOYAMA TAKASHIGE
IPC分类号： B60W10/02 , B60W10/00 , B60W10/04 , B60W10/06 , B60W10/10 , F02D29/00
摘要： PURPOSE:To effectively prevent shocks upon gear shift, by regulating the transmitting torque of a speed change gear so that the deviation between an engine generating torque which is estimated in accordance with the opening degree of a throttle valve, and an actually measured engine transmission torque becomes zero. CONSTITUTION:A torque detector 3 is disposed between an engine 1 and a speed change gear 4. This detector 3 detects the torsion of an input shaft between two points axially spaced to detect the transmission torque of the engine 1. Further, there is provided a detecting means for detecting the opening degree of a throttle valve 13 which is controlled by an actuator 6, and the output of the detecting means is delivered to a control device 11 together with the outputs of the torque detector 3, etc. The control device 11 estimates an engine generating torque in accordance with the opening degree of the throttle valve 13, and compares this engine generating torque with the engine transmitting torque. Further, a throttle valve actuator 6 is controlled to make the torque difference zero so that the transmitting torque may be adjusted.

78. 发明专利

JPS6187940A Fuel feeder for automobile 失效
标题翻译：汽油发动机
公开(公告)号：JPS6187940A
公开(公告)日：1986-05-06
申请号：JP22357585
申请日：1985-10-09
申请人： Hitachi Ltd
发明人： FUJIEDA MAMORU , OOYAMA TAKASHIGE
IPC分类号： F02D41/00 , F02D41/10 , F02D41/12 , F02D41/34
CPC分类号： F02D41/12 , F02D41/107 , F02D41/126
摘要： PURPOSE:To prevent the occurrence of an engine stall in time of reacceleration as well as improve economical efficiency in fuel consumption, by performing a fuel spray out of a fuel injection valve in a thinned-out manner in time of engine deceleration. CONSTITUTION:A fuel injection valve 5 is installed in and around a concentric part of a suction pipe 8, and the fuel injection quantity is set by a computer 16 on the basis of each input signal out of a hot-wire type air flow meter 4, an oxygen sensor 13, a cooling water temperature sensor, a throttle valve opening meter 7, etc. And, at the time of controlling, an engine speed is decelerated when it is more than 1,800r.p.m., by way of example, and if an idle switch is turned to ON, an injection signal is set to zero, stopping the fuel injection. In succession, injection and stoppage are alternately repeated till the engine speed comes, for example, to a range of 950r.p.m. and under this state, the number of injection times is thinned out much more than the usual. Afterward, at that point that the engine speed comes, for example, to 950r.p.m., it is made into a usual injection state even if the idle switch is ON.
摘要翻译：目的：为了防止在再加速时发生发动机失速，并且通过在发动机减速时以稀薄的方式从燃料喷射阀喷出燃料，从而提高燃油消耗的经济效益。构成：燃料喷射阀5安装在吸入管8的同心部分中和周围，并且燃料喷射量由计算机16根据每个输入信号从热线式空气流量计4中设定，氧传感器13，冷却水温度传感器，节气门开度计7等。而且，在控制时，例如超过1,800rpm时发动机转速减速，如果是空转开关变为ON，注入信号设定为零，停止燃油喷射。连续地，喷射和停止交替地重复，直到发动机转速达到例如950r.p.m的范围。在这种状态下，注射次数比通常要多一些。此后，即使在空转开关为ON的情况下，发动机转速达到950r.p.m，即使成为通常的喷射状态。

79. 发明专利

JPS59231133A APPARATUS FOR SUPPLYING AIR-FUEL MIXTURE TO GASOLINE ENGINE 失效
公开(公告)号：JPS59231133A
公开(公告)日：1984-12-25
申请号：JP10525583
申请日：1983-06-13
申请人： HITACHI LTD
发明人： FUJIEDA MAMORU , OOYAMA TAKASHIGE
IPC分类号： F02B31/00 , F02B31/08 , F02B33/00
摘要： PURPOSE:To enable to supply optimum lean mixture fuel without changing the shape of a combustion chamber, by providing an air supplying means in the vicinity of an intake valve which is cmmunicated with an intake pipe for supplying fuel obtained by mixing gasoline and air into a cylinder. CONSTITUTION:Air supplied from an air cleaner 1 is passed through a throttle valve 5 and mixed with fuel supplied from a fuel injection valve 4. The air-fuel mixture thus obtained is supplied to a cylinder 15 via an intake pipe. On the other hand, air introduced from a purge-air inlet port 8 is supplied to a communicating passage 10 via a by-pass valve 7 which is interlocked with the throttle valve 5 by a link 6. In case that the engine has a plurality cylinders, purge air is supplied to the plurality of cylinders separately via the communicating passage 10. An air injection pipe 12 branched from the communicating passage 10 is opened in the vicinity of an intake vale 11 for causing back-flow of air- fuel mixture when air is supplied from the air injection pipe 12.

80. 发明专利

JPS5983048A AIR/FUEL RATIO CONTROLLER 失效
公开(公告)号：JPS5983048A
公开(公告)日：1984-05-14
申请号：JP19242782
申请日：1982-11-04
申请人： HITACHI LTD
发明人： OOSUGA MINORU , OOYAMA TAKASHIGE , FUJIEDA MAMORU , KIRISAWA TADASHI
IPC分类号： G01N27/41 , F02D41/14 , G01N27/406 , G01N27/409
摘要： PURPOSE:To realize engine control for enhancing fuel economical efficiency and power, by enabling the detection of an air/fuel ratio not only in a lean region but also in a rich region by reversing the polarities of electrodes provided to both surfaces of a solid electrolyte. CONSTITUTION:An air/fuel ratio detector 13 is formed from an air/fuel ratio sensor 28 and a theoretical air/fuel ratio sensor 29 and both of them are attached to the interior of the cover 43 having an exhaust gas inlet 40 and exhaust gas outlets 41a, 41b. In this case, a current is supplied to the air/fuel ratio sensor 28 by an electric circuit 17 and a sensor signal 17b is taken out. In addition, by reversing the electrode of the current supplied to the sensor 28 by a relay circuit 27, both A/F ratios of a lean region and a rich region can be detected. Therefore, the effects of the enhancement of fuel economical efficiency and power enhancement can be freely selected by an operational state and engine control for performing both of them is realized.

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