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1. 发明专利

JPH07257352A VEHICLE CONTROL DEVICE 失效
公开(公告)号：JPH07257352A
公开(公告)日：1995-10-09
申请号：JP5030094
申请日：1994-03-22
申请人： NIPPON DENSO CO
发明人： MAKINO NOBUHIKO
IPC分类号： B60T8/175 , B60T8/1761 , B60T8/66 , B60T8/96
摘要： PURPOSE:To perform a precise vehicle control without being influenced by erroneous calculation of wheel speed by providing a vehicle control changing means for comparing a stored minimum computed speed with the wheel speed computed by a speed arithmetic means, and changing the content of vehicle control according to the comparison result. CONSTITUTION:Wheel speed signals derived in wheel rotation sensors 15-18 are inputted to each speed arithmetic means 100-130 set in an ECU 27, and the computed wheel speed of each wheel is inputted to a brake pressure control means 500 set in the ECU 27. In each minimum arithmetic speed memory means 200-230, the minimum computed speed of each wheel speed is detected, stored and held. In a control condition correcting means 51 of brake pressure set in a brake pressure control means 500, the minimum computed speed stored in the minimum computed speed memory means 200-230 is compared with the wheel speed computed by the speed arithmetic means 100-130, and the content of vehicle control is changed according to the comparison result.

2. 发明专利

JPH03558A WHEEL SPEED PROCESSING DEVICE 失效
公开(公告)号：JPH03558A
公开(公告)日：1991-01-07
申请号：JP13412889
申请日：1989-05-26
申请人： NIPPON DENSO CO
发明人： MAKINO NOBUHIKO , YAMADA SHINICHI , WAKAO TERUYOSHI , MASUTOMI SUSUMU
IPC分类号： B60T8/172 , B60T8/66
摘要： PURPOSE:To let control performance be sufficiently exhibited even when a small diameter tire is mounted by operating control variables so as to be compensated by the use of signals from other wheel speed sensors while the wheel speed sensor attached to a small diameter tire mounted wheel is excluded when it is judged that the small diameter tire is mounted. CONSTITUTION:The wheel speeds of a right and a left wheel are operated by a wheel speed operating means based on the detected signals from a right and a left wheel speed sensor so that it is judged by a judging means whether or not there exists a small diameter tire mounted wheel. When it is judged that there exists no small diameter tire mounted wheel, control variables are operated by a control variable operating means by the use of the whole of detected signals from wheel speed sensors. On the other hand, when it is judged that there actually exists the small diameter tire mounted wheel such as a temp space tire and the like, the signal detected by the wheel speed sensor attached to the small diameter tire mounted wheel is excluded so that the control variables are thereby operated so as to be compensated by the use of signals detected by the other wheel speed sensors while the control variables which are operated so as to be compensated are given to a controlled means. By this constitution, control performance which is roughly similar to that of the case when no small diameter tire is mounted, can thereby be exhibited even when the small diameter tire is mounted.

3. 发明专利

JPH01257662A PRESSURE CONTROLLER FOR ACCUMULATOR OF BRAKE DEVICE 失效
公开(公告)号：JPH01257662A
公开(公告)日：1989-10-13
申请号：JP13598488
申请日：1988-06-02
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： MAKINO NOBUHIKO , TAMURA KIMIO , MIYAZAKI YUJI , HOSODA TOMOHIKO , NAKAGAWA FUMIO
IPC分类号： B60T17/00 , B60T8/175 , B60T8/40 , B60T8/44 , B60T8/48 , B60T13/14 , B60T17/02 , B60T17/18
摘要： PURPOSE:To prevent deficiency of pressure P beforehand by driving a fluid pump when the pressure P of an accumulator is smaller, and detecting consumption conditions under which the pressure P is consumed before it becomes smaller than a specified level, thereby driving the pump. CONSTITUTION:In a device wherein pressure fluid discharged from a fluid pump A is once stored in an accumulator B and thereafter it is supplied to a brake unit D through a control valve means C, a pressure detecting means E for detecting the pressure of accumulator B, and the output signal is input to first and second drive control means F, G. A first drive signal is output from the means F to drive the pump A when the detected pressure is lower than the specified level. A second drive signal is output to drive the pump A after consumption conditions under which the pressure of accumulator is consumed are detected.

4. 发明专利

JPH08192730A APPARATUS FOR DETECTING WHEEL RUNNING ON STEP 失效
公开(公告)号：JPH08192730A
公开(公告)日：1996-07-30
申请号：JP461595
申请日：1995-01-17
申请人： NIPPON DENSO CO
发明人： MAKINO NOBUHIKO , MASAKI SHOICHI , KINOSHITA AKEMI
IPC分类号： B60T8/70 , B60T8/172 , B60T8/1761 , B60T8/58
摘要： PURPOSE: To detect a wheel running on a step while preventing the pressure reduction control of prake fluid pressure from being started due to drop of the wheel speed caused by an impact of running on the step. CONSTITUTION: A time CT1 when wheel speed VW exceeds reference speed to judge a step is calculated. The calculated time CT1 is judged to corresponding to the reference time to judge the step, and further the maximum wheel acceleration dVW while the wheel speed VW exceeds the reference speed to judge the step is judged to be higher than the maximum wheel acceleration KGP of the reference to judge the step, so that the wheel running on the step is detected on the basis of these judging results.

5. 发明专利

JPH07329754A ANTI-SKID CONTROL DEVICE 失效
公开(公告)号：JPH07329754A
公开(公告)日：1995-12-19
申请号：JP12251794
申请日：1994-06-03
申请人： NIPPON DENSO CO
发明人： WATANABE TAKASHI , MIZUTANI JUNJI , MAKINO NOBUHIKO , NAGATA TOSHIRO
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1764
摘要： PURPOSE:To maintain a vehicle braking ability both in abrupt braking and gently braking of a vehicle, particularly increase the braking ability of the vehicle and controllabilty of occupants in gentle braking by assuming a pressure difference between a wheel cylinder pressure and a master cylinder pressure. CONSTITUTION:A pressure boosting time for an actuator to boost wheel cylinder pressure to each wheel cylinder is detected by a specified counter in block 101. Also a pressure reducing time for the actuator is detected in block 102, and the present road surface frictional coefficient of a vehicle traveling road surface is assumed to block 103. Then, using the pressure reducing time for the wheel cylinder pressure and the road surface frictional coefficient, the amount of pressure reduction of the wheel cylinder pressure is assumed in block 104. In addition, using the wheel cylinder pressure boosting time and pressure reduction amount, a pressure difference between the master cylinder pressure and wheel cylinder pressure is calculated in block 105. Based on the calculated results, a pulse pressure boosting method for the wheel cylinder pressure is judged in block 106.

6. 发明专利

JPH07174787A ABNORMALITY DETECTOR FOR ACCELERATION SENSOR 失效
公开(公告)号：JPH07174787A
公开(公告)日：1995-07-14
申请号：JP32234993
申请日：1993-12-21
申请人： NIPPON DENSO CO
发明人： MAKINO NOBUHIKO , YAMADA SHINICHI
IPC分类号： G01P21/00
摘要： PURPOSE:To detect the abnormality in an acceleration meter regardless of conditions such as travelling road surface by comparing an acceleration signal operation in one direction of the detection axis of an acceleration sensor and an acceleration signal operated in the other direction with thresholds respectively, and then judging that the acceleration meter is abnormal when only one acceleration signal continuously exceeds the threshold. CONSTITUTION:The abnormality detector is constituted of an acceleration sensor 25 and an ECU 27. The sensor 25 outputs a detected acceleration signal Gs to the ECU 27 and the ECU 27 compares the signal Gs with a threshold Kg1 corresponding to the acceleration in the advancing direction of a vehicle and a threshold Kg2 corresponding to deceleration. Then, when the signal Gs exceeds either threshold Kg1 or Kg2 and the exceeded amount of time (excess continuation time) exceeds reference times KT1 and KT2, it is judged that the sensor 25 is abnormal. In a travelling under a poor road condition, the vehicle vibrates and the thresholds Kg1 and Kg2 are alternately exceeds so that it is not judged that an abnormality has occurred.

7. 发明专利

JPH066426B2 失效
公开(公告)号：JPH066426B2
公开(公告)日：1994-01-26
申请号：JP7242385
申请日：1985-04-04
申请人： NIPPON DENSO CO
发明人： NANBA HIDEAKI , OOBA KATSUHIRO , KAMEI EIICHI , MAKINO NOBUHIKO
IPC分类号： B60T8/66 , B60T8/173 , B60T8/174 , B60T8/1761 , B60T8/58 , B60T8/70

8. 发明专利

JPH05294226A 失效
公开(公告)号：JPH05294226A
公开(公告)日：1993-11-09
申请号：JP10438192
申请日：1992-04-23
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： YAMADA SHINICHI , MAKINO NOBUHIKO , INOUE YASUKO , SHOBU MASAYA , HAMADA CHIAKI
IPC分类号： B60T8/70 , B60T8/172 , B60T8/58
摘要： PURPOSE:To eliminate the follow-up delay of deceleration at the time of ground ing getting over the stepped road surface by suppressing the reduction of brak ing liquid pressure at the wheel lock tendency time by a control means upon judging the sudden reaction change of the road surface, and accelerating the boosting of braking liquid pressure at the wheel lock tendency released time. CONSTITUTION:The wheel speed VW and wheel acceleration dVW are compared with the reference speed VA and reference acceleration G1 so as to judge the lock tendency of a wheel. When the lock tendency is large, it is judged to be the anti-skid control timing, and the road surface state is judged to perform braking liquid pressure control judgment. When the wheel has the lock tendency, the wheel speed VW is compared with the set speed VSL. In the case of being judged to be negative, the wheel speed is reset during short-time pressure reduction, so that the wheel is judged to be shifted into the grounded state from the floating state, and pressure reduction is stopped to perform hold output, taking account of the further reset of the wheel speed at the grounding time. When the wheel speed is lower than the set speed VSL, a vehicle is judged to be in ultra-low mu road travel, and pressure reduction is outputted.

9. 发明专利

JPH07232631A ANTISKID CONTROL DEVICE 失效
公开(公告)号：JPH07232631A
公开(公告)日：1995-09-05
申请号：JP2649794
申请日：1994-02-24
申请人： NIPPON DENSO CO
发明人： YAMADA SHINICHI , MAKINO NOBUHIKO , MASAKI SHOICHI
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1764
摘要： PURPOSE:To perform appropriate antiskid control so as to ensure and improve stability of a vehicle by delaying the pressure increase timing of brake liquid pressure, when it is judged that the road surface friction under right and left respective wheels are different from each other over a prescribed value by a mu) split road detecting means. CONSTITUTION:The absolute value of a parameter DELTATF (step 240) showing a computed degree of split road is compared with a previously determined prescribed value T1 (step 270). Hereat, the present running road surface is set as a (mu) split road, and a permission body deceleration standard G1 which is a standard judging permission of pressure increase delay control is correctively changed. Further, when the absolute value of the parameter DELTATF is not over the prescribed value T1 (step 270), the degree of the (mu split road is under the standard, in the next step, delay control of the pressure increase timing of brake liquid pressure is performed by a pressure increase delay routine (step 290), so as to set a pressure increase time (step 300).

10. 发明专利

JPH07179169A CONTROL DEVICE FOR VEHICLE 失效
公开(公告)号：JPH07179169A
公开(公告)日：1995-07-18
申请号：JP32647693
申请日：1993-12-24
申请人： NIPPON DENSO CO
发明人： YAMADA SHINICHI , MAKINO NOBUHIKO , OOKA MASAKI
IPC分类号： B60T8/46 , B60T8/173 , B60T8/1763 , B60T8/58
摘要： PURPOSE:To correctly realize the vehicle control based on the acceleration signal by selecting the prescribed acceleration signal according to the traveling condition of a vehicle from the acceleration sensor signal to be outputted from a plurality of filters, and using the selected acceleration signal to control the object. CONSTITUTION:The acceleration signal of a vehicle to be detected by an acceleration sensor 1 is received by an A/D conversion circuit 65 to be converted into the digital signal. This digital signal is inputted into the respective low path filters of a first and a second filter processing parts 120, 130. The cut-off frequency of this first filter processing part 120 is set to remove the noise signal of low level in the normal traveling condition of the vehicle. The cut-off frequency of the second filter processing part 130 is set to remove the noise signal of high level to cause the body vibration, etc., when the vehicle is traveling on a rough road. These settings are made by selecting the acceleration signal according to the traveling condition, and the employment of the ABS control becomes possible by using the selected signal.

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