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41. 发明专利

JPH03160126A OUTPUT CONTROLLER OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH03160126A
公开(公告)日：1991-07-10
申请号：JP29494789
申请日：1989-11-15
申请人： MITSUBISHI MOTORS CORP
发明人： HASHIMOTO TORU , TAKAHASHI AKIRA , MIYAKE MITSUHIRO , ITO HIDENORI
IPC分类号： F02D41/04 , F02D9/02 , F02D11/06 , F02D29/02 , F02D41/22 , F02D45/00
摘要： PURPOSE:To improve the safety and reliability by drivingly controlling a solenoid valve which controls charge/discharge of pressure fluid with respect to an actuator when an engine operation condition is judged in a judging zone, and performing judgement of abnormality by the driving. CONSTITUTION:A throttle body 21 incorporating a throttle valve 20 is interposed on the way of an intake pipe 14. The throttle valve 20 is capable of being adjusted in its opening by an acceleration pedal 30 via an acceleration lever 23 connected to a valve shaft 22. The throttle valve 20 is also capable of being adjusted in its opening by the actuator 40 via a throttle lever 24 connected to the valve shaft 22. The actuator 40 is operatively controlled by controlling a duty rate of a normal close type solenoid valve 50 and a normal open type solenoid valve 55. When an engine operation condition is judged it is in a judging zone at a specified operation range which determines engine speed and throttle opening, the solenoid valves 50, 55 are driven, and abnormality is judged according to the driving conditions.

42. 发明专利

JPH03149325A CONTROL METHOD FOR ENGINE SYSTEM 失效
公开(公告)号：JPH03149325A
公开(公告)日：1991-06-25
申请号：JP28792289
申请日：1989-11-07
申请人： MITSUBISHI MOTORS CORP
发明人： MIYAKE MITSUHIRO , TAKAHASHI AKIRA , HASHIMOTO TORU , ITO HIDENORI
IPC分类号： B60T8/175 , B60T8/58 , F02D9/02 , F02D11/02 , F02D29/02
摘要： PURPOSE:To improve responsibility to reduction in engine output by controlling the position of a throttle valve on the side of a low limit value where the improvement of output can not be desired even if the opening of a throttle valve has been enlarged. CONSTITUTION:When ECU judges that difference between an actual valve opening and a target throttle opening in a throttle valve 7 exceeds a dead zone, and the actual valve opening is larger than the target throttle opening, a duty rate for vacuum control according with a slip quantity between front and rear wheels is obtained, and the duty rate for ventilation control is established to be 100%. A solenoid valve 93 is therefore fully closed, and an actuator 911 functions according to the duty rate of a solenoid valve 92 to set the throttle valve 7 at an angle smaller than the throttle opening set by an accel pedal. Thus, in the case where the valve 7 has transfered from full opening to traction control, the position of the valve 7 is controlled to its closing side to reduce output torque immediately after its closing motion.

43. 发明专利

JPH03145545A ENGINE CONTROL METHOD FOR VEHICLE 失效
公开(公告)号：JPH03145545A
公开(公告)日：1991-06-20
申请号：JP28195489
申请日：1989-10-31
申请人： MITSUBISHI MOTORS CORP
发明人： MIYAKE MITSUHARU , TAKAHASHI AKIRA , HASHIMOTO TORU , ITO HIDENORI , YAMADA KIICHI
IPC分类号： B60T8/175 , B60T8/58 , F02D17/00 , F02D17/02 , F02D29/02 , F02D43/00 , F02D45/00 , F02P5/15
摘要： PURPOSE:To reduce the engine output with no response delay by stopping the fuel feed to one or more cylinders, and delaying the ignition timing upon receiving an engine output reduction control command. CONSTITUTION:An engine output control device controls the opening of a throttle valve 7 in an intake passage 2 via an actuator 91, and the opening of the throttle valve 7 is controlled via a diaphragm 91d and a rod 90 in response to the fluid pressure fed to the pressure chamber 91c of the actuator 91. The fluid pressure fed to the pressure chamber 91c is controlled by a vacuum control solenoid valve 92 and a ventilation control solenoid valve 93. Valves 92 and 93 and the ignition timing of an ignition plug 1a are controlled by ECUs, the fuel feed to one or more cylinders is stopped when the output reduction command of an engine E is received, and the ignition timing is delayed.

44. 发明专利

JPH03145542A OUTPUT CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH03145542A
公开(公告)日：1991-06-20
申请号：JP28195789
申请日：1989-10-31
申请人： MITSUBISHI MOTORS CORP
发明人： HASHIMOTO TORU , TAKAHASHI AKIRA , MIYAKE MITSUHIRO , ITO HIDENORI
IPC分类号： B60T8/175 , B60T8/58 , F02D9/02 , F02D11/10 , F02D29/02 , F02D41/04 , F02D41/22 , F02D45/00
摘要： PURPOSE:To prevent an engine shock by controlling solenoid valves to gradually increase the intake air quantity when the abnormality of a device is detected while the engine output is limited in a system that a throttle valve is opened or closed by an actuator controlled via a pair of solenoid valves. CONSTITUTION:The opening of a throttle valve 20 provided on the intake passage 19 of an engine 11 is controlled by an actuator 40 in this device, and the opening of the throttle valve 20 is controlled via a diaphragm 41 and a rod 42 according to the fluid pressure fed to the pressure chamber 43 of the actuator 40. The fluid pressure fed to the pressure chamber 43 is controlled by a normally closed solenoid valve 50 communicated to the negative-pressure source and a normally-opened solenoid valve 55 communicated to the atmosphere side, and solenoid valves 50 and 55 are controlled by an electronic control unit 59 according to the engine operation state. When the abnormality of the output control device is detected while the output of the engine 11 is limited, actions of solenoid valves 50 and 55 are controlled so that the intake air quantity is gradually increased to the quantity corresponding to the operation of a driver.

45. 发明专利

JPH03145526A DRIVE CONTROLLER OF VACUUM ACTUATOR 失效
公开(公告)号：JPH03145526A
公开(公告)日：1991-06-20
申请号：JP28195189
申请日：1989-10-31
申请人： MITSUBISHI MOTORS CORP
发明人： MIYAKE MITSUHIRO , TAKAHASHI AKIRA , HASHIMOTO TORU , ITO HIDENORI
IPC分类号： F02D9/02 , B60W30/00 , F02D11/04 , F02D11/06 , F02D35/00 , F02D41/20
摘要： PURPOSE:To eliminate the delay of responsiveness according to hysteresis of a system by drive-controlling a vacuum actuator with a duty to drive larger a control solenoid valve than a normal case at the time when the driving direction of the vacuum actuator suitable for an output controller of an internal combustion engine is reversed. CONSTITUTION:In a drive controller of a vacuum actuator 10, opening of a throttle valve 7 inside an intake passage 2 is intentionally controlled via an acceleration cable 101 and an acceleration lever 72 by stepping-in of an acceleration pedal 100. Opening of the throttle valve is controlled via a diaphragm 91d and a rod 90 in response to fluid pressure which is supplied to a pressure chamber 91c of the actuator 91. The fluid pressure which is supplied to the chamber 91c is controlled by solenoid valves 92, 93 for vacuum and ventilation control. In an ECU, when the driving direction of the actuator 91 is reversed, the solenoid valves 92 or 93 are controlled to be driven with duty to driven them larger than a normal case.

46. 发明专利

JPH03111647A EXHAUST GAS PURIFIER 失效
公开(公告)号：JPH03111647A
公开(公告)日：1991-05-13
申请号：JP24884989
申请日：1989-09-25
申请人： MITSUBISHI MOTORS CORP , MITSUBISHI ELECTRIC CORP
发明人： TAKAHASHI AKIRA , CHINO MASASHI , HASHIMOTO TORU , MIYAKE MITSUHIRO , NISHIDA MINORU , KATASHIBA HIDEAKI
IPC分类号： F02D41/14 , F02D45/00
摘要： PURPOSE:To improve purifying efficiency by comparing an air-fuel ratio sensor output with a basic signal through a waveform processing means whose time limit is controlled, generating an oscillation signal centered on integration value of an air-fuel ratio discriminating signal to add it to the air-fuel ratio discriminating signal for feedback control. CONSTITUTION:Basic injecting time is determined from an intake air amount Qa and engine speed Ne by a CPU 7 used in ECU 70 so as to add compensation of water temperature Tw, intake air temperature TA and acceleration increase. Besides, the output of an air-fuel ratio sensor 12 is compared with a reference signal 21 by a comparator 20 through a waveform processing circuit 26 whose time limit is controlled so as to integrate a rich/lean discrimination signal by means of an integrator 22, and the oscillation signals of amplitude and frequency corresponding to an engine running condition are generated by means of a generating circuit 24 with the output level centered. The discriminating signal is added to a signal proportionally amplified in a circuit 23 according to a driving condition for adding feedback compensation of air-fuel ratio. It is thus possible to make sufficient use of exhaust gas purifying ability of a catalytic converter.

47. 发明专利

JPH03111646A EXHAUST GAS PURIFIER 失效
公开(公告)号：JPH03111646A
公开(公告)日：1991-05-13
申请号：JP24884889
申请日：1989-09-25
申请人： MITSUBISHI MOTORS CORP , MITSUBISHI ELECTRIC CORP
发明人： TAKAHASHI AKIRA , CHINO MASASHI , HASHIMOTO TORU , MIYAKE MITSUHIRO , NISHIDA MINORU , KATASHIBA HIDEAKI
IPC分类号： F02D41/14
摘要： PURPOSE:To maintain high exhaust gas purifying efficiency by generating after changing an oscillation signal which centers on integration value of an air-fuel discrimination signal by amplitude and frequency corresponding to a driving condition, and adding said signal to an air-fuel ratio signal for feedback-control. CONSTITUTION:Basic injecting timing is determined from an intake air amount Q, and engine speed Ne by a CPU 70 used in a controller 7 so as to add compensation of cooling water temperature Tw, intake air temperature TA and acceleration. Besides, the output from an air-fuel ratio sensor 12 is compared with a reference signal 21 in a comparing circuit 20, so as to discriminate rich/lean to be integrated by an integrator 22, and an oscillation signal of amplitude or frequency matching to an engine running condition is generated through an oscillation signal generating circuit 24 with the output level centered so as to add said signal to output from a proportional amplifying circuit 23 which proportionally processes a discriminating signal from the comparator 20 according to a driving condition. Based on this, feedback compensation for the air-fuel ratio is added. It is thus possible to sufficiently utilize exhaust gas purifying ability of a catalytic converter and maintain high exhaust gas purifying efficiency in a range of air fuel ratio wider than usual.

48. 发明专利

JPH0374536A ACCELERATED INCREASING QUANTITY CORRECTION METHOD FOR FUEL INJECTION QUANTITY 失效
公开(公告)号：JPH0374536A
公开(公告)日：1991-03-29
申请号：JP16817589
申请日：1989-06-29
申请人： MITSUBISHI MOTORS CORP
发明人： HASHIMOTO TORU
IPC分类号： F02D41/10 , F02D45/00
摘要： PURPOSE:To properly perform an accelerated increasing correction in response to the load of an engine by determining a basic fuel injection quantity and an accelerated correction amount corresponding to the amount of the change in intake air quantity per intake stroke on the basis of the intake air quantity per intake stroke, and adding both the values to calculate the fuel injection quantity during acceleration. CONSTITUTION:When an electromagnetic fuel injection valve 6 provided in an intake air passage is controlled by an electronic control unit 8, outputs from various sensors such as an air flow sensor 9, a throttle sensor 12, a water temperature sensor 14, a crank angle sensor 15, etc., are inputted to CPU 19 of the electronic control unit 8. The intake air quantity per intake stroke A/N is then determined based on information on the intake air quantity and information on the rotation of an engine, and a basic driving time TB of the injection valve 6 is determined based on the above determined value. The amount of the change in the intake air quantity per intake stroke A/N is then determined, and an accelerated correction amount TACL is found by multiplying the determined value by an load increasing factor set larger with decreasing the load. The acceleratedly increased fuel injection quantity is then calculated by adding the value TB to the value TACL.

49. 发明专利

JPH02211350A AIR-FUEL RATIO CONTROLLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH02211350A
公开(公告)日：1990-08-22
申请号：JP3149089
申请日：1989-02-09
申请人： MITSUBISHI MOTORS CORP , MITSUBISHI ELECTRIC CORP
发明人： MIYAKE MITSUHIRO , HASHIMOTO TORU , CHINO MASASHI , TAKAHASHI AKIRA , KATASHIBA HIDEAKI , NISHIDA MINORU , MAKIKAWA YASUYUKI
IPC分类号： F02D41/14
摘要： PURPOSE:To reduce the engine vibration by compulsorily deflecting the air-fuel ratio of the exhaust gas supplied into a catalyst in the vicinity of the theoretical air-fuel ratio and suspending or reducing the compulsory vibration in the low speed and low load operation. CONSTITUTION:The air-fuel ratio correction coefficient is outputted from a map 50 on the basis of the signals of a revolution speed sensor 21 and an air flow sensor 11, and the output of an air-fuel ratio control means 51 which compulsorily deflects the air-fuel ratio of the exhaust gas supplied into a catalyst, in the vicinity of the theoretical air-fuel ratio is added by an adding means 53, and the air-fuel ratio of the combustion gas supplied into the catalyst is controlled. In the low speed and low load operation of an internal combustion engine which is detected by the sensors 21 and 11, a vibration control means 52 suspends or reduces compulsory vibration. Thus, in the ordinary operation, the exhaust gas purification efficiency by the catalyst can be increased, and in the low speed low load operation, the engine vibration can be reduced.

50. 发明专利

JPH01134051A CONTROLLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH01134051A
公开(公告)日：1989-05-26
申请号：JP19504388
申请日：1988-08-04
申请人： MITSUBISHI MOTORS CORP
发明人： HASHIMOTO TORU , TAKAHASHI AKIRA , SUGIURA MAMORU
IPC分类号： F02D41/02 , F02D41/00 , F02D41/14 , F02D41/22 , F02D43/00 , F02P5/15 , F02P5/152 , F02P5/153
摘要： PURPOSE:To secure each of proper ignition timing and air-fuel ratio to fuel properties different in octane value by compensating the fundamental ignition timing with plural numbers of data conformed to knock generating value, while compensating a fuel injection quantity at least one side of these data. CONSTITUTION:Each detection signal out of various sensors 14, 19, 21-24 detecting a driving state of a multicylinder internal combustion engine 10 is inputted into an engine control unit 16 together with each detection signal out of an octane value select switch 15 and a knock sensor 26. On the other hand, a control signal out of this engine control unit 16 is outputted to a fuel injection valve 20 and a spark plug 30 of each cylinder, respectively. At this time, plural numbers of compensation data, avoiding a knocking state as varied each at a large or small degree according to a knock signal, are operated at this ECU 16. Then, ignition timing is set according to each compensation data. In addition, an air-fuel ratio is set according to at least either side of these compensation data.

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