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1. 发明专利

JPH07125625A BRAKE CONTROL DEVICE FOR VEHICLE 失效
公开(公告)号：JPH07125625A
公开(公告)日：1995-05-16
申请号：JP27551293
申请日：1993-11-04
申请人： TOYOTA MOTOR CORP , AISIN SEIKI
发明人： INAGAKI SHIYOUJI , YAMAMOTO MASANORI , HATTORI NORIAKI , TOUTSU KENJI , MIHARA JUN , ITO TAKAYUKI , SUGIURA SHINGO , YAMAZAKI NORIO
IPC分类号： B60T8/66 , B60T8/172 , B60T8/175 , B60T8/1755 , B60T8/58
摘要： PURPOSE:To smoothly change the braking force, and reflect the will of a driver even when wheels are driven in a brake control device for the vehicle where the abnormal behavior of the vehicle is coped with by giving the braking force for each wheel. CONSTITUTION:A braking target operator 109 converts the target slip ratio s* to be determined according to the driven condition of a vehicle into a braking force Fbrk*. A slip ratio operator 102, a driving force conversion table circuit 103, an adder 108 or the like calculate the driving force Ftrc* to the driving wheels based on the number Ne of revolution of the engine, the gear ratio (ratio) of a transmission, and the number Nt of revolution of an output shaft of the transmission, and add the calculated value to the target braking value Fbrk* and outputs as the auxiliary braking force Fx*. A target slip ratio operator 110 converts the auxiliary braking force Fx* into the auxiliary target slip ratio s**, and a slip ratio control part 7 7 controls the auxiliary target slip ratio s** where the slip ratio of the driving wheels is corrected according to the driving force by the auxiliary target slip ratio s** and the actual slip ratio S.

2. 发明专利

JPH07117654A BRAKE CONTROLLER FOR VEHICLE 失效
公开(公告)号：JPH07117654A
公开(公告)日：1995-05-09
申请号：JP26737593
申请日：1993-10-26
申请人： TOYOTA MOTOR CORP , AISIN SEIKI
发明人： INAGAKI SHIYOUJI , YAMAMOTO MASANORI , HATTORI NORIAKI , TOUTSU KENJI , MIHARA JUN , ITO TAKAYUKI , SUGIURA SHINGO , YAMAZAKI NORIO
IPC分类号： B60T8/58 , B60T8/17 , B60T8/172 , B60T8/174 , B60T8/1761 , B60T8/1763 , B60T8/34 , B60T8/44 , B60T8/50 , B60T8/64 , B60T8/70 , B60T13/68
摘要： PURPOSE:To carry out the reset for the behavior anomaly speedily with high precision, as for a brake power controller for vehicle which resets the countermeasure for the behavior anomaly of the vehicle by the application of brake power for each wheel. CONSTITUTION:A feedback control part 100A outputs a control pulse signal PI corresponding to the difference between the target slip rate S* calculated from the movement state of a vehicle and the detected actual slip rate S. A feed/forward control part 100B converts the target slip rate S* successively in the order to the necessary brake power Fx, brake hydraulic pressure Pb, and the brake oil quantity V, and converts the brake oil quantity V to the control pulse signal P2. A pulse synthesizing circuit 121 logic-synthesizes both the control pulses P1 and P2, and outputs the control pulse signal P3, and a driving circuit 122 automatically controls the brake oil pressure of each wheel independently of the operation of a brake pedal, according to the control pulse signal P3, and controls the brake oil pressure in a wheel cylinder for each wheel so that the slip rate of each wheel becomes equal to the target slip rate S*.

3. 发明专利

JPH0789425A WHEEL BRAKE PRESSURE CONTROL DEVICE 失效
公开(公告)号：JPH0789425A
公开(公告)日：1995-04-04
申请号：JP23603393
申请日：1993-09-22
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： HATTORI NORIAKI , TOUTSU KENJI , MIHARA JUN , ITO TAKAYUKI , SUGIURA SHINGO , YAMAZAKI NORIO , INAGAKI SHIYOUJI , YAMAMOTO MASANORI
IPC分类号： B60T8/1755 , B60T8/1761 , B60T8/58
摘要： PURPOSE:To match anti-skid control reasonably with braking force distribution control by providing a reference value set means to set a specified limit of pressure at high range while the braking force distribution control means increases or decreases wheel brake pressure and at lower range when it does not increase or decrease the wheel brake pressure. CONSTITUTION:An anti-skid control means judges whether increase or decrease of pressure of each wheel brake is required or not in order to set a wheel slip ratio within a specified limit. If the means judges that it is necessary, the wheel brake pressure is increased or decreased through increasing and decreasing means 312, 334, 356, and 378. In this case, when a reference value set means increases and decreases pressure within a specified limit and a braking force distribution control means increases or decreases wheel brake pressure, it is set at a high range and, when they are not so set, it is set at a low range. Thus while the braking force distribution control means increases or decreases wheel brake pressure, the adjustment (pressure reduction) of the wheel brake pressure is started by anti-skid control when the wheel slip ratio is high to lower the wheel slip ratio.

4. 发明专利

JPH07108912A BRAKING CONTROLLER FOR VEHICLE 失效
公开(公告)号：JPH07108912A
公开(公告)日：1995-04-25
申请号：JP25860093
申请日：1993-10-15
申请人： TOYOTA MOTOR CORP , AISIN SEIKI
发明人： INAGAKI SHIYOUJI , YAMAMOTO MASANORI , HATTORI NORIAKI , TOUTSU KENJI , MIHARA JUN , ITO TAKAYUKI , SUGIURA SHINGO , YAMAZAKI NORIO
IPC分类号： B60T8/32
摘要： PURPOSE:To prevent behavioral recovery carried out by automatically giving braking force to each wheel from interfering in the behavioral recovery carried out by a driving operation when behavioral abnormality occurs in a vehicle. CONSTITUTION:A behavior presuming section 72 presumes the behavior of a vehicle on its various moving state and operating states which are detected by a group of sensors 71. In the case of the behavioral abnormality of the vehicle, a target braking force determining section 75 cooperates with a braking force command computing 'section 73 to determine target braking force for recovering the behavioral abnormality. A valve control section 78 controls each of brake oil pressure controllers 30 to 60 according to the above determined target braking force to give the braking force to each wheel for recovering the behavior of the vehicle. A target braking force correcting section 76 detects the pressing down operation of an accel pedal through program processing on a throttle opening detected by a throttle sensor 77, and releases the automatic giving of the target braking force by setting the target braking force at zero in the case of detection.

5. 发明专利

JPH0789426A BRAKING FORCE DISTRIBUTION CONTROL DEVICE 失效
公开(公告)号：JPH0789426A
公开(公告)日：1995-04-04
申请号：JP23701693
申请日：1993-09-24
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： HATTORI NORIAKI , TOUTSU KENJI , MIHARA JUN , ITO TAKAYUKI , SUGIURA SHINGO , YAMAZAKI NORIO , INAGAKI SHIYOUJI , YAMAMOTO MASANORI
IPC分类号： B60T8/24 , B60T8/175 , B60T8/1755 , B60T8/1761 , B60T8/58
摘要： PURPOSE:To provide a device through which braking force distribution control can be performed even when the brake pedal is not operated by a driver and also the braking operation by the driver can be made even when the braking force distribution control is performed. CONSTITUTION:A braking force distribution control device is provided with a master cylinder 2 to produce first pressure and a booster 5 to produce second pressure; constant pressure sources 21 and 22 to produce a substantially constant and high third pressure; first selector means 64 and 65 to select either of the second and third pressures; second selector means 61 to 63 to select either of the pressure selected by the first selector means and the first pressure; and the first to fourth pressure increasing and decreasing means 312, 334, 356, and 378 to supply the pressure selected by the second selector means and a low pressure selectively to wheel brakes 51 to 54.

6. 发明专利

JPH11129878A BRAKE CONTROL DEVICE FOR VEHICLE 失效
公开(公告)号：JPH11129878A
公开(公告)日：1999-05-18
申请号：JP3431798
申请日：1998-01-30
申请人： AISIN SEIKI
发明人： YOKOYAMA SATOSHI , FUKAMI MASANOBU , TOUTSU KENJI , ITO TAKAYUKI , YAMAZAKI NORIO
IPC分类号： B60T8/24 , B60T8/1755 , B60T8/1761 , B60T8/48 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To suitably discharge a brake fluid in a reservoir by a pump and to surely control fluid pressure in a brake control device for a vehicle provided with a brake fluid pressure control device. SOLUTION: A brake fluid of a master cylinder MC is delivered to a wheel cylinder Wfr through a modulator MD by a hydraulic pump HP, also a brake fluid pressure control device BC storing a brake fluid of the wheel cylinder in a reservoir RS through a modulator is provided, and a check valve CV is interposed between the reservoir and a suction side of the fluid pressure pump. Further, a normally-opened first opening/closing valve SC and a normally-closed second opening/closing valve SI are provided, the first opening/closing valve is placed in a closed position at automatic pressurized time, communication of the master cylinder with the modulator is interrupted. The second opening/ closing valve is placed in an opened position only when a rapid increase pressure mode is selected as a hydraulic mode and when a pressure is increased by selecting a pulse increase pressure mode, a suction side of the hydraulic pump is communicated with the master cylinder.

7. 发明专利

JPH1044956A BRAKE FLUID PRESSURE CONTROLLER 失效
公开(公告)号：JPH1044956A
公开(公告)日：1998-02-17
申请号：JP12334297
申请日：1997-04-25
申请人： AISIN SEIKI
发明人： YAMAZAKI NORIO , YASUI YOSHIYUKI , TOUTSU KENJI , FUKAMI MASANOBU , ITO TAKAYUKI
IPC分类号： B60T8/24 , B60T8/1755 , B60T8/1761 , B60T8/48 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To secure a braking force corresponding to a braking operation of a driver even while traction control or brake steering control is carried out SOLUTION: Boosted brake fluid is discharged to respective wheel cylinders from a hydraulic pump HP1 via modulators (switching valves PCI, PC2, PC5, PC6) arranged between a master cylinder MC and wheel cylinders Wfr, Wfl, while the brake fluid is sucked from the respective wheel cylinders to the hydraulic pump 1, and a brake fluid pressure in each of the wheel cylinders is regulated by means of the modulator. A switching valve STF switching the first position, in which the master cylinder MC and the modulators are connected together, and the second position, in which the master cylinder MC and the intake side of the hydraulic pump HP1 are connected together, to one another is arranged, auxiliary fluid pressure paths AMr, AMt connecting the switching valve STF and the respective wheel cylinders together are arranged, and switching valves SB1, SB2 are arranged in the auxiliary fluid pressure paths AMr, AM1.

8. 发明专利

JPH09226556A VEHICLE MOTION CONTROL DEVICE 失效
公开(公告)号：JPH09226556A
公开(公告)日：1997-09-02
申请号：JP6007396
申请日：1996-02-21
申请人： AISIN SEIKI
发明人： TOUTSU KENJI , YASUI YOSHIYUKI , FUKAMI MASANOBU , ITO TAKAYUKI , YAMAZAKI NORIO
IPC分类号： B60T8/172 , B60T8/1755 , B60T8/66 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To perform desired motion control by computing a suitable estimated body speed, depending on the motion status of a vehicle, regarding a vehicle motion control device. SOLUTION: Brake force applied to each wheel is controlled by means of a brake force control means BC, based on an estimated body speed calculated for every wheel with an estimated body speed operation means ES, and a wheel speed detected with a wheel speed detection means WS. In this case, a lateral difference limit value operation means DF computes the limit value of an estimated body speed difference between vehicular right and left wheels. In addition, a control means LM imposes a limit on the operation of the estimated body speed for one of the right and left wheels, so that the estimated body speed for one of the right and left wheels having a relatively low wheel speed is not below a value resulting from the subtraction of the limit value of an estimated body speed difference for the right and left wheels computed with the lateral difference value operation means DF, from the estimated body speed for the other wheel having a relatively high wheel speed.

9. 发明专利

JPH09164931A MOTION CONTROL DEVICE OF VEHICLE 失效
公开(公告)号：JPH09164931A
公开(公告)日：1997-06-24
申请号：JP34759895
申请日：1995-12-15
申请人： AISIN SEIKI
发明人： YASUI YOSHIYUKI , TOUTSU KENJI , FUKAMI MASANOBU , ITO TAKAYUKI , YAMAZAKI NORIO
IPC分类号： B60T8/24 , B60T8/172 , B60T8/1755 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To turn a vehicle in a stable state by controlling braking force given to a rear wheel at the time of motion control actuation of the vehicle so as not to exceed a specified upper limit value. SOLUTION: At the time when it is judged as excessive oversteering by a vehicle state judging means DR while a vehicle turns, braking force is given to each of wheels so that outward moment is generated to the vehicle by controlling a brake fluid pressure control device PC regardless of whether it is in a braking state caused by operation of a brake pedal BD or not by a motion control means MA, and at the time when it is judged as excessive under- steering, braking force is given to each of the wheels so that inward moment is generated. In the case when the motion control means MA gives braking force to the rear wheels of the vehicle in accordance with a result of judgement of the vehicle state judging means DR, the braking force is controlled to be a specified upper limit value or less by a rear wheel braking force control means RB.

10. 发明专利

JPH10138904A BRAKING CONTROL DEVICE FOR VEHICLE 失效
公开(公告)号：JPH10138904A
公开(公告)日：1998-05-26
申请号：JP29869696
申请日：1996-11-11
申请人： AISIN SEIKI
发明人： YAMAZAKI NORIO , TOUTSU KENJI , YASUI YOSHIYUKI , FUKAMI MASANOBU , ITO TAKAYUKI
IPC分类号： B60T8/66 , B60T8/172 , B60T8/1755 , B60T8/1764
摘要： PROBLEM TO BE SOLVED: To avoid a decrease in the wheel brake pressure control capacity due to a relatively sudden change from high to low of the coefficient of friction of the road surface to obtain a quick followability. SOLUTION: In a braking control device which includes wheel brake pressure control means ECU and PC which compute in an estimation manner the car body speed on the basis of the number of revolutions of the front and rear wheels of a vehicle, and on the basis of the car body speed and the number of revolutions of the front and rear wheels, increase or decrease the pressure of the wheel brakes for the front and rear wheels, wheel brake pressure control means ECU and PC decrease the wheel brake pressure of the rear wheels interlocking with the decrease of the wheel brake pressure of the front wheels which corresponds to the change from high to low of the coefficient of friction of the road surface.

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