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11. 发明专利

JPS63113360A DETECTION OF ABNORMALITY FOR VEHICLE SPEED SENSOR 失效
公开(公告)号：JPS63113360A
公开(公告)日：1988-05-18
申请号：JP25922086
申请日：1986-10-30
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , KAJITA KOJI , TOTSUNE ATSUSHI
IPC分类号： G01P3/42 , F02D45/00
摘要： PURPOSE:To enable the detection of abnormality in a vehicle speed sensor at a low cost and easily, by determining the presence of abnormality in the vehicle speed sensor when an output of the vehicle speed sensor indicates a stop state while judging that a vehicle is running. CONSTITUTION:A pressure sensor 10, a cooling water temperature sensor 12, an intake temperature sensor 13, an oxygen concentration sensor 14, a vehicle speed sensor 16, a revolutions sensor 11 and a brake switch 17 are connected to a control circuit 20. The control circuit 20 judges that the vehicle speed sensor 16 is abnormal with a vehicle speed sensor value below a specified value when several operation parameters are within a specified range corresponding to the running of a vehicle while at least one of the operation parameters is within a normal range outputted during the normal operation of the engine and lights an alarm lamp 34.

12. 发明专利

JPS63113165A MALFUNCTION DETECTING METHOD FOR VACUUM SWITCH 失效
公开(公告)号：JPS63113165A
公开(公告)日：1988-05-18
申请号：JP25922186
申请日：1986-10-30
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , KAJITA KOJI , TOTSUNE ATSUSHI
IPC分类号： F02D45/00
摘要： PURPOSE:To detect something wrong in a vacuum switch without requiring any special inspection instruments, by estimating the valve closing or opening state of a throttle valve by parameters of engine temperature, engine speed and suction vacuum sensors, a brake switch, etc. CONSTITUTION:The closing or opening state of a throttle valve 3 is estimated by parameters of a cooling water temperature sensor 12, an engine speed sensor 11, an absolute pressure sensor 10, a brake switch 34 or the like. For example, an operating state of the brake switch 34 is discriminated, and if this switch 34 is on, it is so discriminated that an engine is in an idling state, in this case, a vacuum switch ought to be off, and if the vacuum switch 7 is turned on, it comes into a timer reset stroke. However, if the vacuum switch 7 is off, it enters a time-up stroke, and when the specified time is counted by a timer, it is so judged that the vacuum switch 7 gets out of order, thereby emitting an alarm command. In this detecting method, it will do only giving a subroutine program to an operational part taking charge of air-fuel ratio control action.

13. 发明专利

JPS63113138A FUEL SUPPLY CONTROL DEVICE FOR CAR-MOUNTED INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63113138A
公开(公告)日：1988-05-18
申请号：JP25921586
申请日：1986-10-30
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , SATO NAOHIKO , SUZUKI KATSUHIKO , TOTSUNE ATSUSHI
IPC分类号： F02D41/12 , F02D41/00 , F02M3/045
摘要： PURPOSE:To prevent the hunting of engine speed from occurring as well as to improve drivability, by stopping a fuel cut even if a fuel cut condition is materialized as long as the stopping time to be set by an engine running parameter, when resuming the supply of fuel from its cut. CONSTITUTION:A vacuum switch 21 to be turned on when a throttle valve 2 less than the specified opening, a suction absolute pressure sensor 24, a crank angle sensor 25, a water temperature sensor 26, a car speed sensor 27, a clutch switch to the turned on at the time of clutch operating and a current sensor 29 detecting a current flowing in a current consumer are all connected to a control circuit 30. This circuit 30 judges a decelerated state on the basis of each detected value out of these sensors, and it perform a fuel cut via a fuel-cut solenoid valve 15. During the fuel cut, if a clutch is opened, this fuel cut is stopped, and the throttle valve 2 is opened as long as the specified time via a three-way solenoid valve 6 and a throttle opener 3, but even if the clutch is engaged again, the fuel cut is stopped as long as the stopping time that is set as the longer, the higher in engine speed.

14. 发明专利

JPS63113134A THROTTLE VALVE CONTROL DEVICE OF CAR MOUNTED INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63113134A
公开(公告)日：1988-05-18
申请号：JP25921486
申请日：1986-10-30
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , SATO NAOHIKO , SUZUKI KATSUHIKO , TOTSUNE ATSUSHI
IPC分类号： F02D41/06 , F02D9/02 , F02D41/00
摘要： PURPOSE:To improve start-up acceleration performance of a car while maintaining normal idle engine speed at low speed by opening a throttle valve so as to keep an idle opening of the throttle valve above a specified opening after the elapse of a specified time when the start-up of the car is detected based on car-speed. CONSTITUTION:Connected to a car-speed pulse generator 10, a current sensor 17 for sensing electrical loads on headlight, air conditioner, etc., an air conditioner detecting switch 18, a power steering detecting switch 19, a control circuit 20 controls negative pressure applied to the pressure receiving chamber 3c of a throttle-opener 3 by means of a three-way solenoid valve 7 so as to obtain the optimal idle opening of the throttle valve in accordance with loaded condition. When the start-up of a car is detected based on detection value sensed by the car-speed pulse generator 10, the control circuit operates a timer, gives a throttle valve operating command for a specified period of time, thus controlling the opening of a throttle valve 2.

15. 发明专利

JPS6363974A APPARATUS FOR DETECTING CURRENT IN ELECTRIC WIRE 失效
公开(公告)号：JPS6363974A
公开(公告)日：1988-03-22
申请号：JP20848086
申请日：1986-09-04
申请人： HONDA MOTOR CO LTD
发明人： SATO HIROMITSU , KUBOTA SHINICHI , TOTSUNE ATSUSHI , ASAKURA MASAHIKO
IPC分类号： G01R15/20 , G01R19/00 , H02J7/16
摘要： PURPOSE:To accurately measure the current of a specific electric wire without receiving the effect of the magnetic field generated in the other electric wire, by arranging a measuring electric wire at a right angle to the other electric wire and further arranging a magnetic core at a right angle with respect to the direction of the measuring electric wire. CONSTITUTION:An electric wire A is constituted of the connecting wire 5 reaching a power-board 14' from a dynamo for a vehicle and the connecting wire 18 to a battery 18 through a terminal 16 while an electric wire B is constituted of the connecting wire 19 extending from the terminal 16 at a right angle and the connecting wire 21 parallel to the electric wire A and reaching electric load. A magnetic core 1a is arranged at a right angle to the wire 19 and a magnetoelectric converting Hall element 1b inserted in the gap part of the core 1a. When the magnetic fields generated by the currents I2, I1 of the electric wires A, B and the magnetic fields gathered to the core 1a are set to H2, H3, H1 and H, since the magnetic field H3 is present in a direction negating the magnetic field H1, H=H1+H2-H3 is formed and, because of H2=H3, H=H1 is formed. As a result, the Hall element 1b receives no effect of the magnetic field generated by the current I2 of the electric wire A and detects the magnetic field generated in the electric wire B to accurately measure the current I1.

16. 发明专利

JPS62298640A AIR-FUEL RATIO CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62298640A
公开(公告)日：1987-12-25
申请号：JP14184286
申请日：1986-06-17
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , IKURA HIROSHI , KAJITA KOJI , TOTSUNE ATSUSHI
IPC分类号： F02D41/14 , F02D41/00
摘要： PURPOSE:To suppress hunting of air-fuel ratio in transient operation so as to improve exhaust gas cleaning performance of the engine in the caption, by computing predicted values of the pressure in an intake pipe and/or the rotating speed of an engine and determining a proportional value or a integrated value according to said predicted values to increase or decrease the control value for air-fuel ratio. CONSTITUTION:During an engine 5 is in operation, a control circuit 20 reads signals from an absolute pressure sensor 10, a crack angle sensor 11, an oxigen concentration sensor 14, and other sensors and computes predicted absolute pressure and predicted rotational speed of said engine 1 and then determines whether the oxigen concentration is leaner than the standard concentration which corresponds to the intended air-fuel ratio or not. It the case is judged that the air-fuel ratio is changed from being rich to lean, a proportional value is determined computing from the predicted absolute pressure, the predicted speed, and a standard proportional value. While, if it is judged that the air-fuel ratio will stay lean continuingly, an integrated value is computed in the same way as the above. A air-fuel ratio correction factor is then corrected corresponding to the result of the computation, and the air-fuel ratio is controlled by controlling a linear type solenoid valve 9 according to the corrected correction factor.

17. 发明专利

JPS62282143A AIR-FUEL RATIO CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62282143A
公开(公告)日：1987-12-08
申请号：JP12653786
申请日：1986-05-30
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , FUKUZAWA TAKESHI , TOTSUNE ATSUSHI , KAJITA KOJI
IPC分类号： F02D41/14 , F02D41/00 , F02D41/16 , F02M3/07 , F02M23/04
摘要： PURPOSE:To aim at reducing the discharge of detrimental components and at preventing variations in idle rotational speed of an engine in which the amount of secondary intake-air is feed-backcontrolled in accordance with the concentration of components in exhaust gas, by feed-back-controlling fuel in a slow system in accor dance with the deviation between an actual rotational speed and a desired rotational speed during idle operation. CONSTITUTION:A control circuit 30 receives detection values from an intake vacuum switch 21, an absolute pressure sensor 24, a crank angle sensor 25, a water temperature sensor 27, an oxygen sensor 28 and the like, and feed-back-controls the air-fuel ratio to a stoichometric air-fuel ratio by means of a linear solenoid valve 9 disposed in a secondary intake-air supply passage 26 when the temperature of intake-air exceeds a predetermined value, the temperature of cooling water exceeds a predetermined value, and the absolute intake-air pressure, the vehicle speed and the like satisfy predetermined conditions. Further, the control circuit 30 controls air-bleed for a second slow jet 17 by means of a solenoid shut-off valve 18 in accordance with the deviation between an actual rotational speed and a desired rotational speed when the vacuum switch 21 is turned on, and idle operation is determined in accordance with conditions such as that the rotational speed is below a predetermined value and the like.

18. 发明专利

JPS63266150A MEASUREMENT OF ATMOSPHERIC PRESSURE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63266150A
公开(公告)日：1988-11-02
申请号：JP10123887
申请日：1987-04-24
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , TOTSUNE ATSUSHI , SATO NAOHIKO
IPC分类号： F02D45/00
摘要： PURPOSE:To measure the atmospheric pressure by the simple constitution of measuring the atmospheric pressure on the basis of the intake pressure in the highly loaded state of an engine and renewing the measured atmospheric pressure according to the lapse of the operation time in which the operation parameter varies over a prescribed value in the deceleration of the vehicle. CONSTITUTION:During the operation of a vehicle, it is judged that a differential pressure switch 50 is turned ON, namely if a throttle valve 30 is in perfect opened state or not. If the judgement is 'YES', it is judged if the detection value of an intake pressure sensor 40 is less than a prescribed value or not, and when the value becomes equal to the detection value in the case when the throttle valve 30 is in perfectly opened state, the max. atmospheric pressure is set to a prescribed value (lower limit value of the atmospheric pressure as measurement object). Then, the correction value of the intake pressure is searched according to the engine revolution speed, and the atmospheric pressure value is estimated by adding the correction value with the detected intake pressure value. When the deceleration state of the vehicle is detected, the operation time in which the detection value of the engine operation parameter exceeds a prescribed value is measured, and the atmospheric pressure at this time is renewed according to the operation time.

19. 发明专利

JPS63113174A AIR-FUEL RATIO CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63113174A
公开(公告)日：1988-05-18
申请号：JP25920886
申请日：1986-10-30
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , TOTSUNE ATSUSHI , KAJITA KOJI , KUBO SATORU
IPC分类号： F02D33/00 , F02M23/10
摘要： PURPOSE:To prevent a fuel-rich condition due to evaporated fuel and the fluctuation of an air-fuel ratio at the time of idling by opening widely an intake secondary air flow adjusting valve until complete engine combustion at a high temperature start and closing said valve gradually at the time of idling. CONSTITUTION:A control circuit 20 is connected with an intake absolute pressure sensor 10, a crank angle sensor 11, a cooling water temperature sensor 12, an O2 sensor 14, an atmospheric pressure sensor 17, an ignition switch 16 and a negative pressure switch 7 to be turned ON at the closing of a throttle valve 3, and controls an air-fuel ratio via a linear type electromagnetic valve 9 on an intake secondary air supply passage 8. When a start time at a high temperature has been detected on the basis of cooling water temperature, the electromagnetic valve 9 is wide opened during a stage of cranking to complete combustion. And the opening of said valve 9 is gradually reduced when an engine 5 has transited to idling.

20. 发明专利

JPS63113147A AIR-FUEL RATIO CONTROLLING METHOD FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63113147A
公开(公告)日：1988-05-18
申请号：JP25920186
申请日：1986-10-30
申请人： HONDA MOTOR CO LTD
发明人： HIBINO YOSHITAKA , TOTSUNE ATSUSHI , SATO NAOHIKO , KAJITA KOJI
IPC分类号： F02D41/14 , F02D41/00
摘要： PURPOSE:To aim at improvement air-fuel ratio control accuracy just after a drive range variation, by varying a reference correction value, controlling the reference value of air-fuel ratio control, gradually from value just before a variation to that just after the variation at a time when a drive range is varied. CONSTITUTION:A control circuit 20 reads the reference value of air-fuel ratio control to be outputted to a linear type solenoid valve 9, on the basis of each detected value out of a suction absolute pressure sensor 10 and a crank angle sensor 11, and it determines an air-fuel ratio correction value on the basis of the detected value of the oxygen sensor 14 when an air-fuel ratio feedback condition is effected. And, when the detected value of the oxygen sensor 14 is reversed, it calculates a reference for compensating an error in the reference value corresponding to a drive range and renews it. And, when this drive range is varied, it sets the value between the adjacent reference correction value and the newset reference correction value in the adjacent drive range as the reference correction value, thereby determining the air-fuel ratio control output value.

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