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1. 发明专利

DE69016702T2 未知
公开(公告)号：DE69016702T2
公开(公告)日：1995-10-05
申请号：DE69016702
申请日：1990-06-06
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： HARA YOSHIMICHI , MATSUNAGA EIJU , KAWATA HIROYUKI , HUKAMI AKIRA , SUZUKI YUTAKA , SHIOZAKI MAKOTO , YOKOYA YUJI , TSUTSUMI YASUHIRO
IPC分类号： B60G17/015 , B60G17/0185 , B60G17/019 , F02D41/20 , H01L41/04
摘要： A drive system of a piezo-type actuator for use in a motor vehicle, which piezo-type actuator is constructed with a piezoelectric device which is expandable and contractible in accordance with application of a voltage thereto. The drive system includes a voltage-increasing section for increasing an output voltage of a power source mounted on the motor vehicle so as to develop a drive voltage for the piezo-type actuator and a voltage-application section for applying to the piezoelectric device of the piezo-type actuator the drive voltage. Also included in the drive system is an abnormality detection section which is arranged so as to an abnormality of the drive voltage developed by the voltage-increasing section. A safety controller is responsive to an abnormality signal from the abnormality detection section for prohibiting the application of the drive voltage to the piezoelectric device thereof and further discharging charges accumulated in the piezoelectric device thereof when the abnormality detection section detects the abnormality of the developed drive voltage. With this arrangement, it is possible to prevent troubles due to the abnormality of the drive voltage to be applied to the piezoelectric device of the piezo-type actuator.

2. 发明专利

DE69000232D1 未知
公开(公告)号：DE69000232D1
公开(公告)日：1992-09-03
申请号：DE69000232
申请日：1990-05-08
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： TSUTSUMI YASUHIRO , YOKOYA YUJI , HARA YOSHIMICHI , MATSUNAGA EIJU , KAWATA HIROYUKI , FUKAMI AKIRA , SUZUKI YUTAKA
IPC分类号： B60G17/015 , B60G17/019 , B60G17/00
摘要： A suspension control system controls suspensions (M1-M4; M12; 2) provided for wheels (5) of a vehicle (1) includes a driving condition detecting part (M5; M11, M14) for detecting a driving condition of the vehicle, and a determination part (M6; M14; 61) for determining whether or not the driving condition detected by the driving condition detecting part coincides with a predetermined driving condition. The suspensions are grouped into a plurality of groups. Also the system includes a control part (M7; M15; 61) for separately controlling the suspensions on the basis of the driving condition when the determination part determines that the driving condition does not coincide with the predetermined driving condition and for controlling the suspensions for each of the groups so that the suspensions in an identical group are set to an identical condition when the determination part determines that the driving condition coincides with the predetermined driving condition.

3. 发明专利

DE69029628T2 未知
公开(公告)号：DE69029628T2
公开(公告)日：1997-05-22
申请号：DE69029628
申请日：1990-09-10
申请人： TOYOTA MOTOR CO LTD , NIPPON DENSO CO
发明人： TSUTSUMI YASUHIRO , YOKOYA YUJI , HARA YOSHIMICHI , MATSUNAGA EIJU , KAWATA HIROYUKI , FUKAMI AKIRA , SUZUKI YUTAKA
IPC分类号： B60G17/015 , B60G17/019
摘要： A suspension control system for controlling a suspension having a shock absorber (M1) provided for a wheel of a vehicle includes a damping force detector (M2) which generates a damping force detection signal which indicates a change of a damping force of the shock absorber based on a condition of a road surface on which the vehicle is running. The system also includes a sprung resonance component extraction unit (M3, M3a) which extracts a sprung resonance component signal (PR, P, Psp) from the damping force detection signal. The sprung resonance component signal includes components having frequencies around a sprung resonance frequency of the shock absorber. Further, the system includes a determining part (M4, M4a, M4b, M4c) which determines whether or not the sprung resonance component signal exceeds a first level range provided for detecting a sign of the occurrence of a long-term vehicle vibration and which outputs a determination result. Moreover, the system includes a damping force controller (M4, M4a, M4b, M4c) which controls the shock absorber so that when the determining part determines that the sprung resonance component signal exceeds the first level range, the damping force of the shock absorber is altered to and maintained at an increased level and thus the suspension is maintained at a state which corresponds to the increased level and which is harder than before.

4. 发明专利

DE69029628D1 未知
公开(公告)号：DE69029628D1
公开(公告)日：1997-02-20
申请号：DE69029628
申请日：1990-09-10
申请人： TOYOTA MOTOR CO LTD , NIPPON DENSO CO
发明人： TSUTSUMI YASUHIRO , YOKOYA YUJI , HARA YOSHIMICHI , MATSUNAGA EIJU , KAWATA HIROYUKI , FUKAMI AKIRA , SUZUKI YUTAKA
IPC分类号： B60G17/015 , B60G17/019
摘要： A suspension control system for controlling a suspension having a shock absorber (M1) provided for a wheel of a vehicle includes a damping force detector (M2) which generates a damping force detection signal which indicates a change of a damping force of the shock absorber based on a condition of a road surface on which the vehicle is running. The system also includes a sprung resonance component extraction unit (M3, M3a) which extracts a sprung resonance component signal (PR, P, Psp) from the damping force detection signal. The sprung resonance component signal includes components having frequencies around a sprung resonance frequency of the shock absorber. Further, the system includes a determining part (M4, M4a, M4b, M4c) which determines whether or not the sprung resonance component signal exceeds a first level range provided for detecting a sign of the occurrence of a long-term vehicle vibration and which outputs a determination result. Moreover, the system includes a damping force controller (M4, M4a, M4b, M4c) which controls the shock absorber so that when the determining part determines that the sprung resonance component signal exceeds the first level range, the damping force of the shock absorber is altered to and maintained at an increased level and thus the suspension is maintained at a state which corresponds to the increased level and which is harder than before.

5. 发明专利

DE3168933D1 SYSTEM FOR CONTROLLING A VEHICLE-MOUNTED AIR CONDITIONER 未知
公开(公告)号：DE3168933D1
公开(公告)日：1985-03-28
申请号：DE3168933
申请日：1981-10-16
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： MASANORI NAGANOMA , KATO YOSHIHARU , SAITO ATSUNORI , HARA YOSHIMICHI , MATSUSHIMA KATSUAKI
IPC分类号： B60H1/00 , F24F11/02 , G05D23/20
摘要： A control circuit for a vehicle-mounted air conditioner having plural dampers therein comprises a manual command entry unit for entering command signals to a computer unit. The computer unit includes a first computer constantly powered by a vehicle-mounted storage battery to receive a temperature resetting command signal from the entry unit and a second computer which is powered from the battery through an engine ignition key switch to receive control data from the first computer to control the air conditioner. A plurality of operating parameter sensors also supplies sensed operating parameters to the second computer to permit it to control one or more of the dampers to direct conditioned air to the vehicle compartment. A display unit receives data from the computer unit to provide visual display of the reference temperature and the operating conditions of the air conditioner.

6. 发明专利

DE69016702D1 未知
公开(公告)号：DE69016702D1
公开(公告)日：1995-03-23
申请号：DE69016702
申请日：1990-06-06
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： HARA YOSHIMICHI , MATSUNAGA EIJU , KAWATA HIROYUKI , HUKAMI AKIRA , SUZUKI YUTAKA , SHIOZAKI MAKOTO , YOKOYA YUJI , TSUTSUMI YASUHIRO
IPC分类号： B60G17/015 , B60G17/0185 , B60G17/019 , F02D41/20 , H01L41/04
摘要： A drive system of a piezo-type actuator for use in a motor vehicle, which piezo-type actuator is constructed with a piezoelectric device which is expandable and contractible in accordance with application of a voltage thereto. The drive system includes a voltage-increasing section for increasing an output voltage of a power source mounted on the motor vehicle so as to develop a drive voltage for the piezo-type actuator and a voltage-application section for applying to the piezoelectric device of the piezo-type actuator the drive voltage. Also included in the drive system is an abnormality detection section which is arranged so as to an abnormality of the drive voltage developed by the voltage-increasing section. A safety controller is responsive to an abnormality signal from the abnormality detection section for prohibiting the application of the drive voltage to the piezoelectric device thereof and further discharging charges accumulated in the piezoelectric device thereof when the abnormality detection section detects the abnormality of the developed drive voltage. With this arrangement, it is possible to prevent troubles due to the abnormality of the drive voltage to be applied to the piezoelectric device of the piezo-type actuator.

7. 发明专利

DE69000232T2 未知
公开(公告)号：DE69000232T2
公开(公告)日：1992-12-24
申请号：DE69000232
申请日：1990-05-08
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： TSUTSUMI YASUHIRO , YOKOYA YUJI , HARA YOSHIMICHI , MATSUNAGA EIJU , KAWATA HIROYUKI , FUKAMI AKIRA , SUZUKI YUTAKA
IPC分类号： B60G17/015 , B60G17/019 , B60G17/00
摘要： A suspension control system controls suspensions (M1-M4; M12; 2) provided for wheels (5) of a vehicle (1) includes a driving condition detecting part (M5; M11, M14) for detecting a driving condition of the vehicle, and a determination part (M6; M14; 61) for determining whether or not the driving condition detected by the driving condition detecting part coincides with a predetermined driving condition. The suspensions are grouped into a plurality of groups. Also the system includes a control part (M7; M15; 61) for separately controlling the suspensions on the basis of the driving condition when the determination part determines that the driving condition does not coincide with the predetermined driving condition and for controlling the suspensions for each of the groups so that the suspensions in an identical group are set to an identical condition when the determination part determines that the driving condition coincides with the predetermined driving condition.

8. 发明专利

JPS6085010A SHOCK ABSORBER CONTROLLING DEVICE 失效
公开(公告)号：JPS6085010A
公开(公告)日：1985-05-14
申请号：JP19452983
申请日：1983-10-18
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： HARA YOSHIMICHI , ISHIGURO YOSHINORI , KAMIYA KOUJI , NAKAJIMA NORIYUKI , MASAKI KAZUO , SUZUKI MOTOHARU
IPC分类号： B60G17/00 , B60G17/015 , B60G17/08
摘要： PURPOSE:To restrain the nose-dive of a vehicle, by controlling the drive of an actuator in such a way that damping force is changed into its large value from its small value with a depressing speed of a brake, which becomes lower as the vehicle speed becomes higher. CONSTITUTION:A microcomputer 1 receives a vehicle speed from a vehicle speed sensor 2 and a depressed amount of a brake from a stroke sensor 3. The microcomputer 1 computes the vehicle speed and the depressing speed of the brake, and compares a value which is obtained from a damping force change-over curve that is the function of a vehicle speed, with the computed brake depressing amount. The computer delivers control signals to drive control circuits 10 through 13 so that damping force is changed from its large value to its small value with a depressing speed which is lower as the vehicle speed is higher. With this arrangement shock-absorbers may be controlled, suitably for the travelling condition of the vehicle to restrain the nose-dive of the vehicle.

9. 发明专利

DE69125961T2 未知
公开(公告)号：DE69125961T2
公开(公告)日：1997-11-27
申请号：DE69125961
申请日：1991-02-15
申请人： TOYOTA MOTOR CO LTD
发明人： YOKOYA YUJI , TSUTSUMI YASUHIRO , SUZUKI YUTAKA , HARA YOSHIMICHI , FUKAMI AKIRA
IPC分类号： B60G17/015 , B60G17/019 , F16F9/50

10. 发明专利

DE69125961D1 未知
公开(公告)号：DE69125961D1
公开(公告)日：1997-06-12
申请号：DE69125961
申请日：1991-02-15
申请人： TOYOTA MOTOR CO LTD
发明人： YOKOYA YUJI , TSUTSUMI YASUHIRO , SUZUKI YUTAKA , HARA YOSHIMICHI , FUKAMI AKIRA
IPC分类号： B60G17/015 , B60G17/019 , F16F9/50

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