公开(公告)号：JPS6474112A

公开(公告)日：1989-03-20

申请号：JP23189087

申请日：1987-09-16

Applicant: TOYOTA MOTOR CORP ,  NIPPON DENSO CO

Inventor： ONUMA TOSHIO ,  IKEMOTO HIROYUKI ,  ICHIMARU HIDENORI ,  YASUIKE OSAMU ,  SOGA MASAYUKI

IPC: B60G21/04 ,  B60G17/015 ,  B60G17/027 ,  B60G21/05 ,  B60G21/055

Abstract: PURPOSE:To improve both the straight advance traveling performance and drive feeling by carrying out control so that the torsional force generated on a stabilizer increases with the increase of the car speed in the straight advance traveling in which the steering angle of a vehicle has a prescribed angle. CONSTITUTION:A stabilizer M1 for jointing the both spring lower members for supporting the right and left wheels of a vehicle is installed. Further, an actuator M2 for varying the torsional force generated on the stabilizer M1 by a control signal supplied from outside is installed. Further, the means M3 and M4 for detecting the traveling speed and steering angle of the vehicle are installed. A means M5 for controlling the actuator M2 is installed so that the torsional force generated on the stabilizer M1 is increased. accompanied with the increase of the detected traveling speed in the case when the detected steering angle is below a prescribed value. Therefore, accompanied with the increase of the car speed, the stabilizer M1 is controlled so as to develop the original function.

公开(公告)号：JPS6467413A

公开(公告)日：1989-03-14

申请号：JP22485687

申请日：1987-09-08

Applicant: TOYOTA MOTOR CORP ,  NIPPON DENSO CO

Inventor： YASUIKE OSAMU ,  IKEMOTO HIROYUKI ,  ICHIMARU HIDENORI ,  ONUMA TOSHIO ,  SOGA MASAYUKI

IPC: B60G21/04 ,  B60G17/015 ,  B60G17/027 ,  B60G21/055

Abstract: PURPOSE:To efficiently suppress the rolling to be generated in a vehicle during running on a road surface or the like having a low coefficient of friction by correcting a torsional quantity of a stabilizer according to a coefficient of friction between a wheel and the road surface. CONSTITUTION:A control device M0 adjusts a torsional quantity of a stabilizer connecting unsprung members of right and left wheels in a vehicle according to a running condition of the vehicle. The control device M0 includes means M1 for detecting a coefficient of friction between the whels and a road surface and means M2 for correcting the torsional quantity of the stabilizer according to the coefficient of friction detected. When the coefficient of friction is small, for example, the torsional quantity of the stabilizer is corrected to a relatively small value. Accordingly, when the vehicle is turned on the road surface having a low coefficient of friction, the generation of reverse rolling due to excess control of the torsional quantity of the stabilizer is prevented.

公开(公告)号：JPS6460416A

公开(公告)日：1989-03-07

申请号：JP21710087

申请日：1987-08-31

Applicant: TOYOTA MOTOR CORP ,  NIPPON DENSO CO

Inventor： YASUIKE OSAMU ,  IKEMOTO HIROYUKI ,  ICHIMARU HIDENORI ,  ONUMA TOSHIO ,  SOGA MASAYUKI

IPC: B60G21/02 ,  B60G17/015 ,  B60G17/027 ,  B60G21/05 ,  B60G21/055

Abstract: PURPOSE:To always properly perform the control of a stabilizer by holding its torsional amount to a predetermined value when a yawing angular speed in a vehicle obtains a detection value in a predetermined value or more further when ratio of an estimated value of the yawing angular speed to its detection value is in a predetermined value or less. CONSTITUTION:A means M4 outputs an instruction changing to a target torsional amount being based on a car speed and a steering angle respectively detected in each means M2, M3, controlling a means M1 which adjusts a torsional amount of a stabilizer. In this device, a means M7 decides whether or not a yawing angular speed, detected in a means M6, is placed in a rapid rotating condition exceeding a predetermined value. While a means M8 calculates an estimated yawing angular speed being based on the car speed and lateral acceleration, further a means M9 decides whether or not ratio of the yawing angular speed to the estimated yawing angular speed is in a rapid turning condition less than a predetermined value. When the yawing angular speed and its ratio to the estimated yawing angular speed are respectively placed in the rapid rotating condition and the rapid turning condition, a means M10 outputs an instruction, holding the torsional amount to the predetermined value, to the means M1.

公开(公告)号：JPS6317178A

公开(公告)日：1988-01-25

申请号：JP16139986

申请日：1986-07-09

Applicant: TOYOTA MOTOR CORP

Inventor： SOGA MASAYUKI

IPC: B62D6/00

Abstract: PURPOSE:To prevent a torque steer phenomenon by controlling solenoid valves so as to squeeze their valve opening areas based on signals from a control circuit when a vehicle is quickly accelerated during the nearly straight travel. CONSTITUTION:Solenoid valves 20, 21 controlling valve opening areas in response to the currents fed to their coils are incorporated in fluid feed/ discharge paths 18, 19 between a control valve 3 and a power cylinder 17; an acceleration meter 40 of a vehicle, a steering angle sensor 41 outputting a signal in response to the steering angle, and a control circuit 30 inputting these signals provided. When the vehicle is quickly accelerated during the nearly straight travel, the solenoid valves 20, 21 are controlled so as to squeeze their valve opening areas based on the signals from the control circuit 30. As a result, the fluid flow between the control valve 3 and the power cylinder 17 is suppressed. Accordingly, the steering sustaining performance is improved, and a torque steer phenomenon can be prevented.

公开(公告)号：JP2003127721A

公开(公告)日：2003-05-08

申请号：JP2001327384

申请日：2001-10-25

Applicant: TOYOTA MOTOR CORP

Inventor： SOGA MASAYUKI

IPC: B60K25/00 ,  B60K6/20 ,  B60K6/44 ,  B60K6/52 ,  B60K6/543 ,  B60L7/24 ,  B60L7/26 ,  B60T8/17 ,  B60T8/32 ,  B60T8/64 ,  B60T13/58 ,  B60W10/00 ,  B60W10/04 ,  B60W10/08 ,  B60W10/18 ,  B60W10/188 ,  B60W10/192 ,  B60W20/00 ,  B60K41/20 ,  B60K41/00 ,  B60T8/00

Abstract: PROBLEM TO BE SOLVED: To prevent the sharp change of the deceleration of a vehicle when a shift is made between a cooperative braking mode for friction braking and reclaiming braking and a single braking mode for friction braking. SOLUTION: A target reclaiming braking force and a target friction braking force are calculated on the basis of the normal deceleration rate Gbt of the vehicle based on the amount of braking operation by a driver so as to make a reclaiming braking force as large as possible. In a normal traveling, the braking force of the vehicle is controlled under the cooperative mode for the reclaiming braking and friction braking (S100 to 210). At the first or a prescribed time of braking control, the braking force of respective wheels is controlled under the single braking mode using the friction braking, where a compensation factor Kp is calculated as the ratio between the actual deceleration rate Gbx and the normal deceleration rate Gbt of the vehicle at this time (S90, S220 to 280), then the target friction braking force is compensated to be increased to Kp times (S190). In this manner, the change of the total braking force of the vehicle is prevented when the braking mode is shifted between the cooperative braking mode and the single braking mode, so that sharp change of the deceleration of the vehicle is prevented (S110 to 210).

公开(公告)号：JP2001177916A

公开(公告)日：2001-06-29

申请号：JP35238199

申请日：1999-12-10

Applicant: TOYOTA MOTOR CORP ,  TOYOTA CENTRAL RES & DEV

Inventor： OBUCHI HIROSHI ,  SOGA MASAYUKI ,  NIWA SATORU ,  SAKAMOTO JUNICHI ,  HATTORI YOSHIKAZU

IPC: H02J7/00 ,  B60L5/00 ,  B60L11/18 ,  B60M7/00

Abstract: PROBLEM TO BE SOLVED: To provide an energy-supplying apparatus which conducts smooth supplying of energy to a running mobile. SOLUTION: This energy-supplying apparatus supplies energy to a running mobile 1 from an energy-supplying facility 2 and is provided with a transmitting means 6 for transmitting to the mobile 1, information about the situation on the supplying point in the side of the supplying facility 2.

公开(公告)号：JP2001114088A

公开(公告)日：2001-04-24

申请号：JP29842899

申请日：1999-10-20

Applicant: TOYOTA MOTOR CORP

Inventor： SOGA MASAYUKI

IPC: B60T8/26 ,  B60T8/172 ,  B60T8/1763 ,  B60T8/1766 ,  B60T8/58

Abstract: PROBLEM TO BE SOLVED: To provide a brake control device for a vehicle improved in braking feeling in the low-friction and low-speed condition. SOLUTION: This brake control device for a vehicle in this invention has a wheel braking force applying means for applying the wheel braking force to wheels to brake the wheels, and a wheel braking force control means for controlling the wheel braking force. When it is determined that the road surface is in the low-friction condition lower than the predetermined condition and that car speed is in the low-friction and low-speed condition lower than the predetermined value, the wheel braking force control means increases the wheel braking force applied to the driving wheels larger than the wheel braking force applied to the driving wheels in the case where friction and speed are not low.

公开(公告)号：JP2001039280A

公开(公告)日：2001-02-13

申请号：JP21546699

申请日：1999-07-29

Applicant: TOYOTA MOTOR CORP

Inventor： SOGA MASAYUKI

IPC: B60T8/00 ,  B60T17/00

Abstract: PROBLEM TO BE SOLVED: To ensure desirable braking force reliably without needless energy loss even when the braking force generation efficiency of braking force generating mechanisms lowers. SOLUTION: The braking-based temperature increases Δθinf and Δθinr of the brake rotors of a left front wheel and left rear wheel are computed in S120, S130. The heat-radiation-based temperature decreases Δθdef and Δθder of the brake rotors of both wheels are computed in S140, S150. The temperatures Trf and Trr of the brake rotors of both wheels are computed in S160. From the temperatures Trf and Trr, the coefficients of friction μf and μr between the brake pads and brake rotors of both wheels are calculated in S170. The smaller one of the two coefficients of friction μf and μr is set as a coefficient of friction μ for control in S180. A standard value Pal0 for the lower limit Pal of the accumulator pressure and a standard value Pah0 for the upper limit Pah thereof are corrected with the value μ0/μ in S190, S200.

公开(公告)号：JP2000255417A

公开(公告)日：2000-09-19

申请号：JP6104699

申请日：1999-03-09

Applicant: TOYOTA MOTOR CORP

Inventor： SAKAMOTO JUNICHI ,  SOGA MASAYUKI

IPC: B60T8/94 ,  B60T17/22

Abstract: PROBLEM TO BE SOLVED: To efficiently detect various abnormality without complicatedly operating various valve devices by detecting abnormality of a braking force control device on the basis of fluid pressure detected by plural pressure sensors arranged in a hydraulic circuit for communicating with a master cylinder and a wheel cylinder at uncontrolled time. SOLUTION: In an abnormality judging routine at uncontrolled time in a microcomputer 76, a maximum value, a minimum value, pressure large in the next place of the maximum value and pressure small in the next place of the minimum value among first/second master cylinder pressures detected by pressure sensors 66, 68 and wheel cylinder pressure detected by pressure sensors 74FL to 74RR are determined to judge whether or not these values are in a normal zone from the maximum value and the minimum value by using a map, and when it is YES, an average value of both master cylinder pressures is arithmetically operated to judge whether or not these values are in an abnormal zone from this average value and a stroke value by using the map, and when it is NO, it is judged as abnormality of a stroke sensor 70.

公开(公告)号：JPH11235975A

公开(公告)日：1999-08-31

申请号：JP5431698

申请日：1998-02-19

Applicant: TOYOTA MOTOR CORP

Inventor： SOGA MASAYUKI ,  ONUMA YUTAKA ,  SAKAMOTO JUNICHI

IPC: B60T7/12 ,  B60T8/40 ,  B60T13/68 ,  B60T17/18 ,  B60T17/22

Abstract: PROBLEM TO BE SOLVED: To satisfy the braking demand of a driver positively even if the demand is generated at the time of parking and stopping on a slope or the like. SOLUTION: This electronically-controlled brake device for vehicle, which is provided with a braking device and an electronic controller for controlling the braking device electrically according to the operation of a brake pedal by a driver, judges a braking demand by a driver based on the stroke of the brake pedal detected by a stroke sensor (S40, 90), judged the parking and stopping conditions of the vehicle based on the condition of an ignition switch (S30, 70, 80), and judged whether or not such a condition as the vehicle is in a parking or stopping condition without a braking demand by a driver has continued for a prescribed time (S60, 110). After such a condition as the vehicle is in the parking or stopping condition without a braking demand by the driver has continued for the prescribed time, the operations of the electronically- controlled brake device and the respective sensors are released (S120, 130).