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1. 发明专利

JPH10100623A TIRE AIR PRESSURE DETECTING DEVICE 失效
公开(公告)号：JPH10100623A
公开(公告)日：1998-04-21
申请号：JP27547996
申请日：1996-09-25
申请人： NIPPON SOKEN , DENSO CORP , TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： TOMINAGA MOTONORI , NISHIKAWA YOSHIHIRO , SUZUKI MOTOJI , FUJIWARA KENJI , OHASHI HIDEKI , UMENO KOJI
IPC分类号： B60K28/16 , B60C23/06
摘要： PROBLEM TO BE SOLVED: To obviate a new sensor and a time-consuming operation, and make influence of a sloping road and influence of abration of a tire hard to be exerted by prohibiting a judgment of a tire air pressure condition by judging that a driving wheel is put in a slip condition when a large acceleration difference is caused between the driving wheel and a driven wheel. SOLUTION: In a tire air pressure condition detecting device, even when a vehicle accelerates, or even when it travels at constant speed on an upward sloping road, when an acceleration difference ΔAR and ΔAL is caused between a driving wheel and a driven wheel by imbalance of grip force by friction between a tire and a road surface, it is judged that the driving wheel is put in a slip condition on the basis of this, and an operation of a wheel speed deviation value D is prohibited. Therefore, a slip condition of the driving wheel can be accurately judged only by performing operation processing on an acceleration difference between front and rear wheels by applying wheel speed data used in an operation of the wheel speed deviation value D without arranging an inclination sensor or the like, and judging reliability of a tire air pressure condition can be enhanced.

2. 发明专利

JPH10193935A TIRE PNEUMATIC PRESSURE ABNORMALITY JUDGING DEVICE 失效
公开(公告)号：JPH10193935A
公开(公告)日：1998-07-28
申请号：JP1342197
申请日：1997-01-09
申请人： TOYOTA MOTOR CORP , DENSO CORP , TOYOTA CENTRAL RES & DEV
发明人： OHASHI HIDEKI , KAWAI HIROYUKI , KOJIMA HIROYOSHI , SUZUKI MOTOJI , FUJIWARA KENJI , UMENO KOJI
IPC分类号： G01L17/00 , B60C23/06
摘要： PROBLEM TO BE SOLVED: To improve accuracy in judging the abnormality of a tire pneumatic pressure by providing a means which calculates the rotational vibration level of the tire in a prescribed time and, when vibration level reaches a prescribed value or more, judges the abnormality of the tire pneumatic pressure. SOLUTION: A tire pneumatic pressure judging device is provided with a normalization permission judging value calculation block 34. The normalization permission judgment calculating block 34 calculates the normalization judgment value, a level of relative rotational vibration between a belt side part and a rim side part based on an estimation value of the angular velocity of a belt side part estimated by a disturbance observer 30 and the angular velocity of the rim side part calculated as a wheel speed by a pulse signal from wheel speed sensors 12FL-12RR. A normalization block 36 judges whether the normalization permission judgment value is a standard value or more. When it is the standard value or more, it is normalized, an abnormality judgment block 38 calculates variation of a spring constant, and the abnormality of the tire pneumatic pressure is judged based on this variation.

3. 发明专利

JPH10157419A TIRE INFLATION PRESSURE DETECTING DEVICE 失效
公开(公告)号：JPH10157419A
公开(公告)日：1998-06-16
申请号：JP33299196
申请日：1996-11-28
申请人： NIPPON SOKEN , DENSO CORP , TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： TOMINAGA MOTONORI , NISHIKAWA YOSHIHIRO , SUZUKI MOTOJI , FUJIWARA KENJI , OHASHI HIDEKI , UMENO KOJI
IPC分类号： B60C23/02 , B60C23/06 , B60K28/16
摘要： PROBLEM TO BE SOLVED: To enhance the accuracy for detecting a tire air pressure state during driving in which a slipping state varies according to fluctuation of the driving power of the vehicle. SOLUTION: An arithmetic processing unit 2 in a tire air pressure detecting device uses a rotating-state-value computing means 2b to compute, from the wheel speed detected by wheel speed sensors 1a to 1d, a rotating state value that depends on the deviation of the wheel speed, and uses a front-and-rear wheel speed deviation computing means 2c to compute the wheel speed deviation between the front and rear wheels. From the rotating state values obtained within a predetermined period, data obtained when the wheel speed difference between the front and rear wheels is small in terms of the relative magnitude of the wheel speed deviation are sorted out by sorting means 2d, 2e, 2f. By setting judging means 2i, 2j so that the air pressure states of tires are judged according to the central value of the rotating state values sorted out, data obtained when a slip state is great is prevented from adversely affecting judgment even if driving power fluctuates.

4. 发明专利

JP2001071881A BRAKE FLUID PRESSURE SOURCE DEVICE 失效
公开(公告)号：JP2001071881A
公开(公告)日：2001-03-21
申请号：JP24987499
申请日：1999-09-03
申请人： TOYOTA MOTOR CORP , DENSO CORP
发明人： HASHIMOTO TAKESHI , SUZUKI MOTOJI
IPC分类号： B60T8/48
摘要： PROBLEM TO BE SOLVED: To provide a brake hydraulic pressure source device including a pump to selectively supply hydraulic fluid from a master cylinder and that from a reservoir to the pump. SOLUTION: A master cylinder 14 through a first hydraulic fluid supply passage 100, and a master reservoir 106 through a second hydraulic fluid supply passage 110 are connected to a pump 44. The first hydraulic fluid supply passage 100 is provided with a master influx control valve 102, and the second hydraulic fluid supply passage 110 is provided with a reservoir influx control valve 112. When the reservoir influx control valve 112 is closed, and the master influx valve 102 is open, the pump 44 draws hydraulic fluid from the master cylinder 14 as in a first state. When the master influx control valve 102 is closed and the reservoir influx control valve 112 is open, the pump 44 draws the hydraulic fluid from the master reservoir 106 as in a second state.

5. 发明专利

JPH11227601A DETERMINATION OF ABNORMALITY IN BOOSTER AND BRAKE DEVICE 失效
公开(公告)号：JPH11227601A
公开(公告)日：1999-08-24
申请号：JP3503398
申请日：1998-02-17
申请人： TOYOTA MOTOR CORP , DENSO CORP , AISIN SEIKI
发明人： ISONO HIROSHI , SUZUKI MOTOJI , NITTA HIROSHI
IPC分类号： B60T13/66 , B60T7/02 , B60T7/04 , B60T8/44 , B60T8/94 , B60T13/68 , B60T13/72 , B60T17/22
摘要： PROBLEM TO BE SOLVED: To determine the abnormality of a booster by detecting the input and output of the booster to know that the input detected in the almost same period as the output, is not normally corresponded to the detected output. SOLUTION: The master cylinder liquid pressure PM corresponding to a certain value of the brake operating force FP in the normal operation of the booster is higher than that in the abnormal operation. When the brake operating force FP is a set value FPS, the master cylinder liquid pressure PM has the normal value. When the master cylinder liquid pressure PM at the time when the operating force switch 50 detects that the brake operating force FP is equal to the set value FPS, is lower than a reference value PMK which is lower than the normal, value PMS, it is judged that the booster is abnormal, a two-position valve 70 is switched to a close state simultaneously, and a pump 74 is driven to generate the liquid pressure which is higher by the amount of the fixed differential pressure in a brake cylinder by the master cylinder liquid pressure PM, whereby the impairing of the braking work caused by the abnormality of the booster can be prevented.

6. 发明专利

JPH11301459A VACUUM BOOSTER DEVICE, AND BRAKE DEVICE 失效
公开(公告)号：JPH11301459A
公开(公告)日：1999-11-02
申请号：JP10511998
申请日：1998-04-15
申请人： TOYOTA MOTOR CORP , DENSO CORP , AISIN SEIKI
发明人： MIZUTANI KYOJI , SUZUKI MOTOJI , NITTA HIROSHI
IPC分类号： B60W10/04 , B60T8/48 , B60T13/52 , B60T13/66 , B60T13/68 , B60T13/72 , B60T17/00 , B60W10/06 , B60W10/18 , B60W10/184 , F02D9/02 , F02D11/10 , F02D29/02 , B60K41/20
摘要： PROBLEM TO BE SOLVED: To secure a required negative pressure, and reduce frequency at which a throttle opening is shrunk during brake operation, in a vacuum booster device for shrinking the throttle opening when negative pressure of the vacuum booster weakens. SOLUTION: When negative pressure of a negative pressure chamber 12a weakens than a required negative pressure determined based on a master cylinder liquid pressure and increased speed of the master cylinder liquid pressure during operation of a brake pedal 10, opening of a throttle valve 20 is reduced. As a result, achievement of a booster 12 to an energization limit can be avoided, operation force can be boosted by the booster 12, and brake force can be enlarged. Thus, by shrinking the throttle opening if necessary, frequency at which a throttle opening is shrunk can be reduced rather than the case of a traditional vacuum booster, and degradation of fuel consumption can be restrained.

7. 发明专利

JP2005088726A Tire pressure alarm, tire monitored by the alarm, and method for controlling characteristic value of tire 审中-公开
标题翻译：轮胎压力报警，报警监测的轮胎及控制轮胎特性值的方法
公开(公告)号：JP2005088726A
公开(公告)日：2005-04-07
申请号：JP2003324436
申请日：2003-09-17
申请人： Advics:Kk , Sumitomo Rubber Ind Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 住友ゴム工業株式会社 , 株式会社アドヴィックス
发明人： SUZUKI MOTOJI , KAJINO HIDENORI , YANASE MINAO
IPC分类号： G01L17/00 , B60C19/00 , B60C23/06
CPC分类号： B60C23/061 , Y10T137/36
摘要： PROBLEM TO BE SOLVED: To improve tire pressure reduction detecting accuracy by controlling characteristics of a tire. SOLUTION: This tire is monitored by a tire pressure alarm including a wheel speed detection means of detecting respective wheel speeds of a vehicle, a determination value deriving means of deriving a determination value based on the respective wheel speeds detected by the wheel speed detection means, an air pressure reduction determining means of determining the air pressures in the tires constituting the wheels based on the determination value derived by the determination value deriving means, and an alarm means of alarming an air pressure reduction when the air pressure reduction determining means determines the air pressure reduction, and dependency on speed of moving load radius of the tire is standardized so as to standardize tire pressure reduction determining performance by the air pressure reduction determining means. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过控制轮胎的特性来提高轮胎压力降低检测精度。解决方案：通过包括检测车辆的各车轮速度的车轮速度检测装置的轮胎压力警报来监视该轮胎，确定值导出装置，用于基于由车轮速度检测的各车轮速度导出确定值检测装置，根据由判定值导出装置导出的判定值，判定构成车轮的轮胎的空气压力的空气压力降低判定单元，以及当空气压力降低判定单元确定空气压力降低，并且依赖于轮胎的移动负载半径的速度被标准化，以便通过空气压力降低确定装置来标准化轮胎压力降低确定性能。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JPH11227585A BRAKE DEVICE 失效
公开(公告)号：JPH11227585A
公开(公告)日：1999-08-24
申请号：JP3084698
申请日：1998-02-13
申请人： TOYOTA MOTOR CORP
发明人： MIZUTANI KYOJI , KONDO KOICHI , SUZUKI MOTOJI , NITTA HIROSHI
IPC分类号： B60T8/00 , B60T8/48
摘要： PROBLEM TO BE SOLVED: To eliminate an influence to a brake operation feeling by a brake operation speed by restraining the change in response to the operation force of a break operation member and car body reduction speed at the increasing time of the pressure of a break cylinder. SOLUTION: In a front/rear two system type break device, a brake cylinder 60 for operating the respective brake 50 of the right/left front wheels is connected to the pressurized room of one side of a master cylinder 14. When it is obstructed by a pressure control valve 70 that a hydraulic fluid from a pump 34 is escaped to a master cylinder 14 and the delivery pressure of a pump 74 is increased and a hydraulic pressure higher than the master cylinder 14 is generated in the brake cylinder 60, it is restrained by an electronic control unit that the relation between the operation force of a brake pedal 10 and a car body reduction speed is changed in response to the operation speed of the brake pedal 10.

9. 发明专利

JPH11198782A BRAKE DEVICE 失效
公开(公告)号：JPH11198782A
公开(公告)日：1999-07-27
申请号：JP838398
申请日：1998-01-20
申请人： TOYOTA MOTOR CORP
发明人： ISONO HIROSHI , MIZUTANI KYOJI , ONUMA YUTAKA , KONDO KOICHI , NITTA HIROSHI , SUZUKI MOTOJI
IPC分类号： B60T8/26 , B60T8/00 , B60T8/36 , B60T8/44 , B60T8/48 , B60T13/00 , B60T13/138 , B60T13/52 , B60T13/575 , B60T13/68
摘要： PROBLEM TO BE SOLVED: To stabilize a brake operating feeling irrespective of a variation in assistance limit point according to a pressure of a negative pressure source in a brake device of a vehicle provided with a booster device for boosting a brake cylinder hydraulic pressure to a hydraulic pressure higher than a master cylinder hydraulic pressure in order to prevent a brake effectiveness due to lowering of capacity of a vacuum booster connected to the negative pressure source from being lowered. SOLUTION: A vacuum booster is structured so that it reaches an assistance limit point PL after moving from a large magnification ratio area to a small magnification ratio area when a brake operating force (f) is increased, and its magnification ratio area movement point PC is not varied according to the pressure from the negative pressure source. Also the booster device is structured so that it boosts the brake cylinder hydraulic pressure PB to a hydraulic pressure higher than the master cylinder hydraulic pressure PM with the magnification ratio are movement point PC taken as a boosting starting point PS.

10. 发明专利

JPH10329689A CAR BODY BEHAVIOR CONTROLLER 失效
公开(公告)号：JPH10329689A
公开(公告)日：1998-12-15
申请号：JP14684697
申请日：1997-06-04
申请人： DENSO CORP
发明人： SUZUKI MOTOJI , IDO TOSHIYUKI , YOKOYAMA TAKAHISA
IPC分类号： B60T8/1755 , B60T8/58 , B60T13/66
摘要： PROBLEM TO BE SOLVED: To prevent a tire from exceeding the limit of the time in turning to suitably control the braking drive force or steering angle. SOLUTION: In this device, a tire use level of each wheel at this point of time is calculated (S300). The tire use level of each wheel is obtained by determining which position of a friction circle of tire the presence state of the tire is situated in, or whether it is within the tire limit or not from a slip rate of present time and an existing slip angle. A steering angle correction quantity of each wheel is successively determined by use of the tire use level of each wheel and a prescribed map. By use of the tire use levels of front or rear lateral wheels, the steering angle correction quantity to each wheel of lateral wheels on the respective sides is determined (S310). Namely, supposing that a rotating moment in the turning of a vehicle evenly acts on the lateral wheels, and the steering angle correction quantity is set so as not to break the balance of the rotating moment.

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