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31. 发明专利

JPH09301142A BRAKING FORCE CONTROL DEVICE OF VEHICLE 失效
公开(公告)号：JPH09301142A
公开(公告)日：1997-11-25
申请号：JP14070996
申请日：1996-05-10
申请人： AISIN SEIKI
发明人： TOUTSU KENJI , YASUI YOSHIYUKI , 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 suitably control braking force in such a manner that a sudden yaw rate change is not caused by a change in the road surface friction coefficient during running of a vehicle. SOLUTION: The change rate of a target yaw rate is computed by a target yaw rate change rate operating means DR, the change rate of the actual yaw rate is computed by an actual yaw rate change rate computing means AR, and a deviation of both change rates is computed by a deviation computing means CD. When the deviation exceeds a designated change rate, a brake liquid pressure control device PC is controlled in such a manner that the change rate of the actual yaw rate is restrained by a change rate control means RM.

32. 发明专利

JPH09164932A MOTION CONTROL DEVICE OF VEHICLE 失效
公开(公告)号：JPH09164932A
公开(公告)日：1997-06-24
申请号：JP34811895
申请日：1995-12-15
申请人： AISIN SEIKI
发明人： FUKAMI MASANOBU , TOUTSU KENJI , YASUI YOSHIYUKI , ITO TAKAYUKI , YAMAZAKI NORIO
IPC分类号： B60T8/24 , B60T8/172 , B60T8/1755 , B60T8/1764 , B60T8/58 , B60T8/60
摘要： PROBLEM TO BE SOLVED: To secure a favorable follow-up property by smoothly carrying out motion control actuation even in a case when a road surface friction coefficient changes during motion control. SOLUTION: When it is judged as excessive over-steering by a vehicle state judging means DR while a vehicle turns, a brake fluid pressure control device PC is controlled by a motion control means MA regardless of whether it is in a braking state caused by the operation of a brake pedal BP or not and braking force is given to each of wheels so that outward moment is generated against the vehicle, and when it is judged as excessive under-steering, the braking force is given to each of the wheels so that inward moment is generated. Corrective control is carried out against the motion control means MA by a corrective control means AC so that the braking force given to each wheels increases and decreases in accordance with a result of computation by computing a rate of change of a friction coefficient of a road surface assumed by a road surface friction coefficient assuming means CF by a change rate computing means VR.

33. 发明专利

JPH09142273A VEHICULAR MOTION CONTROL DEVICE 失效
公开(公告)号：JPH09142273A
公开(公告)日：1997-06-03
申请号：JP32401795
申请日：1995-11-17
申请人： AISIN SEIKI
发明人： YASUI YOSHIYUKI , TOUTSU KENJI , FUKAMI MASANOBU , ITO TAKAYUKI , YAMAZAKI NORIO
IPC分类号： B60T8/1755 , B60T8/24 , B60T8/44 , B60T8/48 , B60T8/60 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To turn a vehicle under a stable condition even when excessive oversteering and excessive understeering are simultaneously or continuously generated. SOLUTION: When a vehicular condition determining means DR determines excessive oversteering during vehicular turning, an oversteering restraining control means OS controls a brake hydraulic control device PC regardless of brake pedal BP operation, Braking force is provided to each wheel to generate outward moment against the vehicle. When excessive understeering is determined, an understeering restraining control means US provides braking force to each wheel to generate inward moment. When the excess oversteering and the excess understeering are simultaneously or continuously generated, a preference control means PR preferentially gives oversteering restraining control to front wheels FR, FL, and understeering restraining control to rear sheels RR, RL.

34. 发明专利

JPH08282461A WHEEL BRAKE PRESSURE CONTROL DEVICE 失效
公开(公告)号：JPH08282461A
公开(公告)日：1996-10-29
申请号：JP8405295
申请日：1995-04-10
申请人： AISIN SEIKI
发明人： TOUTSU KENJI , NISHIZAWA YOSHIHARU , YAMAZAKI NORIO
IPC分类号： B60T8/58 , B60T8/175 , B60T8/1761 , B60T8/1766 , B60T8/26
摘要： PURPOSE: To make the initial pressurization of a wheel cylinder accurately only in a necessary quantity by performing initial pressurization for the time determined according to the presumptive value of a wheel cylinder liquid pressure obtained by a liquid pressure presuming means. CONSTITUTION: A wheel brake pressure control device concerned comprises wheel speed sensors 41-44, yawrate sensor YA, front wheel steering angle sensor 6F, rear wheel steering angle sensor θR, fore-and-aft acceleration sensor GX, and transverse acceleration sensor GY, and output signals therefrom are fed to an electronic control device 10. When the car behavior according to the sensing made by the sensors is in the first condition, selector valves 61-64 are turned into the second position, and a liquid pressure pump 24 is operated to execute the auto-pressurizing mode. In this pressurizing mode, the liquid pressure value is presumed, and the initial pressurization time is set longer if the presumed liquid pressure value is lower. If the car behavior is in the second condition having a higher sensitivity, the selector valves 61-64 are turned into the second position, and control is made so that the liquid pressure is introduced to the wheel cylinder only for the set time of initial pressurization.

35. 发明专利

JPH08198089A HYDRAULIC PRESSURE CONTROL DEVICE OF VEHICLE 失效
公开(公告)号：JPH08198089A
公开(公告)日：1996-08-06
申请号：JP3176495
申请日：1995-01-27
申请人： AISIN SEIKI
发明人： ITO TAKAYUKI , TOUTSU KENJI , NISHIZAWA YOSHIHARU , YAMAZAKI NORIO
IPC分类号： B60T8/88 , B60T8/1766
摘要： PURPOSE: To decide the operating condition of a hydraulic pressure control valve and a changeover valve adequately, by deciding the operating condition of the first changeover valve and a control valve device depending on the variation of the wheel speed between a control object and a non-control object, in the condition to operate a brake pedal in the running condition, and to position the first changeover valve to the first position. CONSTITUTION: The first changeover valve STR to convert a control valve device FV2 to the first position communicating to a master cylinder MC and the second position to cut off the communication with the master cylinder MC is provided. And, under the condition to operate a brake pedal BP at a specific stroke or more for more than a specific time in the running condition of the vehicle, and under the condition to provide the first changeover valve STR at the first position, the operating condition of the first changeover valve STR and the control valve device FV2 is decided depending on the variation of the wheel speed between a control object wheel (RL, for example) and a non-control object wheel (RR). As a result, even if either the changeover valve or the control valve device is stuck mechanically at the operating position, the abnormal condition can be decided securely.

36. 发明专利

JPH08142832A CAR BODY ATTITUDE CONTROL DEVICE 失效
公开(公告)号：JPH08142832A
公开(公告)日：1996-06-04
申请号：JP29270194
申请日：1994-11-28
申请人： AISIN SEIKI
发明人： MIHARA JUN , TOUTSU KENJI , YASUI YOSHIYUKI , FUKAMI MASANOBU , NISHIZAWA YOSHIHARU , YAMAZAKI NORIO , ITO TAKAYUKI
IPC分类号： B60T8/1755 , B60T8/58
摘要： PURPOSE: To effectively suppress the abnormal turn or spin of a vehicle by linking the wheel brake pressure control and rear wheel steering control. CONSTITUTION: When a car body is turned in the undesirable direction or excessively turned, an information processing means 11 judges the wheel brake suitable for suppressing the turn in the undesirable direction or excessive turn and boosts it. When the increase of the wheel brake pressure is determined, a steering instructing means generates the instruction information specifying the steering in the opposite direction to the car body turning direction. A steering control means 70 excites a steering means in response to this instruction information. The moment of the turn in the undesirable direction or the excessive turn is suppressed by the increase of the wheel brake pressure, and it is further suppressed by the steering of the steering means. The abnormal turn or spin of a vehicle is effectively suppressed.

37. 发明专利

JPH1170869A VEHICLE MOTION CONTROL DEVICE 失效
公开(公告)号：JPH1170869A
公开(公告)日：1999-03-16
申请号：JP24941697
申请日：1997-08-28
申请人： AISIN SEIKI
发明人： TOUTSU KENJI , ITO TAKAYUKI , YAMAZAKI NORIO , YOKOYAMA SATOSHI
IPC分类号： B60T8/24 , B60T8/1755 , B60T8/48 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To monitor loading to a master cylinder in order to properly control hydraulic pressure in a vehicle motion control device quipped with a brake hydraulic control device. SOLUTION: This vehicle motion control device is equipped with a brake hydraulic control device BC which delivers braking fluid for a master cylinder MC to each wheel cylinder Wfr by way of a modulator MD by means of a hydraulic pump HP, and also store the braking fluid for each wheel cylinder Wfr in a recervoir RS by way of the modulator MD, and has a check valve CV interposed between the reservoir RS and the inlet side of the pump HP, furthermore is equipped with a first normally open closing valve SC and a second normally close closing valve SI, and with a relief valve RV in parallel with the first closing valve SC. And when the quantity of the operation of a braking pedal BP detected by a pedal operation quantity detection means SD is found less than the specified quantity of operation, and when the accumulated value of the quantity of braking fluid returned to the master cylinder MC, which is estimated by a returned fluid quantity estmation means RF, is equal to or more than a specified value, a warning is thereby given by a warning means WA.

38. 发明专利

JPH10230829A BRAKING FORCE CONTROLLER 失效
公开(公告)号：JPH10230829A
公开(公告)日：1998-09-02
申请号：JP5391097
申请日：1997-02-20
申请人： AISIN SEIKI
发明人： NAGAI HIROYUKI , YASUI YOSHIYUKI , YAMAZAKI NORIO , TERADA HITOSHI , TANAKA KENJI
IPC分类号： B60T8/26 , B60T8/1761 , B60T8/1766 , B60T8/28 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To provide a braking force controller capable of reliably performing control of braking force distribution even when engine brake is generated, in a vehicle taking at least front wheels as driving wheels. SOLUTION: In a vehicle taking at least front wheels FR as driving wheels, a fluid pressure controller PC is interposed between a fluid pressure generating device PG and at least wheel cylinders Wrr for rear wheels, and brake fluid pressure of the wheel cylinders Wrr is controlled. The fluid pressure controller PC is driven by a braking force control means BC, and braking force of rear wheels RR is so adjusted as to have the specified relationship in relation to braking force of the front wheels FR. When it is judged that engine brake is generated to the vehicle by an engine brake judging means EB, the fluid pressure controller PC is driven by the braking force control means BC so that braking force of the rear wheels RR may have the specified relationship in which the braking force is less than braking force of the front wheels FR.

39. 发明专利

JPH10203329A VEHICLE MOTION CONTROL DEVICE 失效
公开(公告)号：JPH10203329A
公开(公告)日：1998-08-04
申请号：JP2204297
申请日：1997-01-20
申请人： AISIN SEIKI
发明人： TOUTSU KENJI , ITO TAKAYUKI , YAMAZAKI NORIO
IPC分类号： B60T8/24 , B60T8/00 , B60T8/17 , B60T8/1755 , B60T8/1761 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To quickly set proper hydraulic pressure mode according to the expected control mode when a plurality of control modes were set simultaneously to the wheels to be controlled. SOLUTION: A control map is set with a control map setting means CM, and a reference map is also set with a reference map setting means RM. With a hydraulic pressure map setting means PM, based on the point in the coordinate of a control map, which is determined by the slip rate deviation and car acceleration deviation calculated for each wheel, a hydraulic pressure mode is set to a brake hydraulic control device PC in a specified control mode. When a plurality of control modes were set to each wheel and a plurality of control maps corresponding to these modes were superimposed to the reference map, a hydraulic pressure mode in the side, where pressure reduction gradient of wheel cylinder hydraulic pressure becomes large, is selected out of a plurality of hydraulic pressure modes set by a plurality of control maps, with a hydraulic pressure selecting means PS, and wheel cylinder hydraulic pressure is controlled by the brake hydraulic control device PC according to this selected hydraulic pressure mode.

40. 发明专利

JPH09207736A MOTION CONTROL DEVICE OF VEHICLE 失效
公开(公告)号：JPH09207736A
公开(公告)日：1997-08-12
申请号：JP4059096
申请日：1996-02-02
申请人： AISIN SEIKI
发明人： FUKAMI MASANOBU , TOUTSU KENJI , YASUI YOSHIYUKI , ITO TAKAYUKI , YAMAZAKI NORIO
IPC分类号： B60T8/24 , B60T8/1755 , B60T8/1764 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To maintain proper brake steering control motion even in the case when an engine brake works during brake steering control. SOLUTION: When it is judged to be excessive oversteering by a vehicle state judging means VC while a vehicle turns, a brake hydraulic pressure control device PC is controlled by a kinetic control means MA regardless of operation of a brake pedal BP, braking force is given to each wheel so that an outward moment is generated against the vehicle, and when it is judged to be excessive understeering, braking force is given to each of the wheels so that an inward moment is generated. When an excessive braking detection means DT detects an excessive braking state against a drive wheel DL (DR), corrective control is carried out against the kinetic control means MA by a correcive control means AC so that braking force to give to a driven wheel NL (NR) increases.

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