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21. 发明专利

JPH0899626A VEHICLE CONTROL DEVICE 失效
公开(公告)号：JPH0899626A
公开(公告)日：1996-04-16
申请号：JP19752195
申请日：1995-08-02
申请人： NIPPON DENSO CO
发明人： MAKINO NOBUHIKO , YAMADA SHINICHI , WAKAO TERUYOSHI , MASUTOMI SUSUMU
IPC分类号： B60T8/66
摘要： PURPOSE: To sufficiently display control performance even at the time of a different diameter tire being mounted by judging and discriminating the presence of the different diameter tire from each wheel speed, and controlling using the estimated body speed based on the wheel speed obtained by correcting the deviation between the reference wheel speed of either one of the front and rear wheel excluding the discriminated wheel and the wheel speed of the other wheel. CONSTITUTION: The CPU 41 of a microcomputer 36 reads signals from wheel speed sensors 5-8 and a stop switch 25 and computes each wheel speed according to a program prestored in an ROM 42. The discrimination of a small diameter wheel on whether or not a small diameter tire is mounted is then performed from the deviation (speed ratio) of lateral wheels. The wheel speed VFL, VFR of front lateral wheels are compared and also the wheel speed VRL, VRR of rear lateral wheels are compared, and the one with higher speed is stored as the small diameter tire. The correction factor KR(n) of the front and rear wheel speed is then computed, and the output difference is corrected. On the basis of this, the estimated body speed VSB and the slip judgment speed VSH are computed.

22. 发明专利

JPH07277169A ANTI-SKID CONTROL DEVICE FOR FOUR-WHEEL DRIVE VEHICLE 失效
公开(公告)号：JPH07277169A
公开(公告)日：1995-10-24
申请号：JP7572094
申请日：1994-04-14
申请人： NIPPON DENSO CO
发明人： MAKINO NOBUHIKO , YAMADA SHINICHI
IPC分类号： B60T8/1769 , B60T8/58
摘要： PURPOSE:To restrict a lowering of deceleration, and to also restrict the vibration by performing at least one of the prohibition of reduction of the brake pressure and the delay of increase of the brake pressure with a vibration restricting means at the only time when each axle speed of the front wheel side and the rear wheel side has opposite phase vibration. CONSTITUTION:In an anti-skid control device to be applied to a four-wheel drive vehicle, a difference of the rotating speed between each axle of the front wheel side and the rear wheel side is computed by a speed difference computing means. A period that the computed speed difference achieves a predetermined value is computed by a period computing means. Furthermore, when the computed period exists within a predetermined range, a vibration generating means judges that each axle speed of the front wheel side and the rear wheel side has the opposite phase vibration. When the vibration is judged, a vibration restricting means performs at least of the prohibition of reduction of the brake pressure and the delay of increase of the brake pressure performs to at least one of wheels of the front wheel and the rear wheel. Lowering of the deceleration is thereby restricted, and the vibration is also restricted.

23. 发明专利

JPH07172288A ANTI-SKID CONTROL DEVICE 失效
公开(公告)号：JPH07172288A
公开(公告)日：1995-07-11
申请号：JP31973793
申请日：1993-12-20
申请人： NIPPON DENSO CO
发明人： YAMADA SHINICHI , INOUE YASUKO , MAKINO NOBUHIKO
IPC分类号： B60T8/66
摘要： PURPOSE:To calculate a more accurate vehicle body velocity based on wheel velocity by providing a change means for changing the calculation of estimated vehicle body velocity according to wheel velocity when the slip value of each wheel is determined to be within a predetermined range over a predetermined time. CONSTITUTION:Outputs from wheel velocity sensors 71-74 provided in the wheels of a vehicle are sampled into an ECU 100. The velocities of all the wheels are computed form the output of the ECU. Signals from an acceleration sensor 1 are sampled into the ECU 100. The acceleration sensor 1 is for detecting the deceleration of the vehicle body when the vehicle is braked. In the ECU 100, the deceleration of the vehicle body is computed based on signals output from the acceleration sensor 1, to calculate an estimated vehicle body velocity. The slip value of each wheel is determined with the estimated vehicle body velocity as a reference, and control signals for controlling brake hydraulic pressure are transmitted to drive circuits 82, 83, 84, 85, 86, 87.

24. 发明专利

JPH06107156A ANTISKID CONTROLLER 失效
公开(公告)号：JPH06107156A
公开(公告)日：1994-04-19
申请号：JP25698792
申请日：1992-09-25
申请人： NIPPON DENSO CO
发明人： YAMADA SHINICHI , MAKINO NOBUHIKO , OOKA MASAKI
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1764
摘要： PURPOSE:To provide an antiskid controller that is able to improve the braking property of a vehicle as controlling the extent of yaw torque to be added to the vehicle on a split road. CONSTITUTION:Each solenoid valve individually regulating each braking hydraulic pressure of symmetrical front wheels operates both differences in each time turning to a booster mode and a decompressing mode (206), and on the basis of this operation, a high hydraulic pressure side wheel is judged (207). After each individual solenoid valve control mode is set on the basis of a slip state of each wheel (209), select low control is selected for rear wheels (211), independent control, independent limiting control and the selector low control are selected for the front wheels, in proportion as a difference in the slip state grows larger (217). Imbalance in front wheel braking force on a split road means that large yaw torque is added to a vehicle, but the extent of braking force is improvable as controlling this imbalance in a sufficient manner.

25. 发明专利

JPS60244610A SHOCK ABSORBER CONTROL DEVICE 失效
公开(公告)号：JPS60244610A
公开(公告)日：1985-12-04
申请号：JP10119484
申请日：1984-05-18
申请人： NIPPON DENSO CO
发明人： WAKAO TERUYOSHI , TAMURA KIMIO , MAKINO NOBUHIKO , NAKAJIMA NORIYUKI
IPC分类号： B60G17/06 , B60G17/015 , B60G17/016 , F16F9/46
摘要： PURPOSE:To secure more comfortable ride, by providing a damping force changing means adapted to increase a damping force of a shock absorber when a decision means has decided that a detected result exceeds an upper limit and falls below an lower limit within a predetermined time. CONSTITUTION:A wheel speed sensor 10 is mounted to a propeller shaft, and generates a pulse. A brake sensor 12 generates an output only during execution of a brake mechanism. Outputs from the sensors 10 and 12 are received by a digital operating circuit 14 mainly composed of a microcomputer, and are used for various operations. The operating circuit 14 is constituted of a microcomputer including CPU 14A, ROM 14B and RAM 14C for execution of various operations and an I/O circuit 14D for enabling information transmission between same and an external device. According to the result of the operations, signals are supplied to driving circuits 24-30 for driving four shock absorber 16-22 of four wheels to thereby attain the purpose.

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