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1. 发明专利

JPH09175366A ACCELERATION SLIP CONTROLLER FOR VEHICLE 失效
公开(公告)号：JPH09175366A
公开(公告)日：1997-07-08
申请号：JP34203595
申请日：1995-12-28
申请人： TOYOTA MOTOR CORP
发明人： SASAHARA KENJI , NAKAJIMA SEIICHI
IPC分类号： B60T8/175 , B60T8/48 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of aeration and control acceleration slip by estimating the temperature of brake fluid from the elevation element and reduction element of brake temperature and the ambient temperature of a vehicle, and controlling the brake of a drive wheel, making use of the estimated temperature. SOLUTION: An intake air temperature sensor 46 detects the temperature of the intake air supplied to an engine 40, and a water temperature sensor 48 detects the temperature of engine cooling water. These detection signals are sent to an electronic controller (ECU) 52 through an engine controller 50. ECU 52 detects the slip condition of rear wheels 14 and 16 by the signals from car speed sensors 20, 22, 24, and 26, and also by the signal from a brake controller 38, brake operation time, etc., are operated, and the temperature of brake fluid is estimated, using the ambient temperature of a vehicle detected with the intake air temperature sensor 46, the water temperature sensor 48, etc. Based on this estimated temperature, it issues a command to the brake controller 38, and inhibits excessive acceleration slip control, whereby brake control can be performed more properly.

2. 发明专利

JPH1044959A ACTIVE BRAKE DEVICE OF VEHICLE 失效
公开(公告)号：JPH1044959A
公开(公告)日：1998-02-17
申请号：JP21671696
申请日：1996-07-30
申请人： TOYOTA MOTOR CORP , DENSO CORP
发明人： SASAHARA KENJI , TOKUDA TETSUYA
IPC分类号： B60T8/48 , B60T8/1766
摘要： PROBLEM TO BE SOLVED: To prevent generation of the fluid hammer noise by stopping a pump when the active control is completed, discharging the working fluid to a reservoir, and opening a shut-off valve after the pressure in a hydraulic control passage and in a wheel cylinder is dropped. SOLUTION: When the traction control to actively control the braking force becomes unnecessary through reduction of the acceleration slip below the prescribed value, a control valve 62R for connection is closed at the time t, and the oil feed from a master cylinder to a pump is shut off. The pump is stopped by stopping the energization to a motor 54 at the elapsed time t1 of the prescribed time Δt1 after the time t0, and the high pressure oil between a control valve 28FR for pressure increase and a shut-off valve 22R is discharged to a reservoir through a control valve 32FR for pressure reduction, and the pressure in a control conductor and a discharge conductor is reduced. The shut-off valve 22R is opened at the elapsed time t2 of Δt2 from the time t1, and the control valve 32FR for pressure reduction is closed.

3. 发明专利

JPH09170466A ACCELERATION SLIP CONTROL DEVICE FOR VEHICLE 失效
公开(公告)号：JPH09170466A
公开(公告)日：1997-06-30
申请号：JP33311295
申请日：1995-12-21
申请人： TOYOTA MOTOR CORP
发明人： NAKAJIMA SEIICHI , SASAHARA KENJI
IPC分类号： F02D29/02 , B60K28/16 , B60W10/04 , B60W10/10 , B60W10/11 , F02D41/04 , F16H59/50 , F16H59/66 , F16H61/02 , F16H61/16 , F16H63/50
摘要： PROBLEM TO BE SOLVED: To ensure an optimum shift control according to the conditions of road surfaces by limiting shifting-up according to the conditions thereof in a device performing acceleration slip control upon detection of slip of a drive wheel and carrying out shifting-up when the speed of engine is over a specified value. SOLUTION: In an ECU 42 whether acceleration slip control is carried out or not is detected during operation of vehicle, and in the case of the control operation it is discriminated whether the present shift position is the first speed or not. If it is YES, it is discriminated whether the speed of engine exceeds the shift revolution speed from the first to the second speed, and at the time of YES discrimination whether the estimation value of road surface friction coefficient is smaller than a threshold value or not is discriminated. If is smaller whether the condition of road surface is a bad road condition or not is discriminated. If the friction coefficient of road surface is smaller even in the bad road condition, shifting-up requirement is carried out, and also a value of slip time counter is compared with a threshold of slip time, shifting-up requirement is carried out if the former is larger than the latter.

4. 发明专利

JPH08133055A ACCELERATION SLIP CONTROL DEVICE 失效
公开(公告)号：JPH08133055A
公开(公告)日：1996-05-28
申请号：JP27530094
申请日：1994-11-09
申请人： TOYOTA MOTOR CORP
发明人： SASAHARA KENJI , SAKAMOTO JUNICHI
IPC分类号： B60T8/48 , B60T8/172 , B60T8/175 , B60T8/1755 , B60T8/58
摘要： PURPOSE: To prevent a slip at an early stage by setting the upper limit value of a steering angle capable of stable travelling from the velocity of a vehicle body and the condition of a road and driving the pump of a brake pressure generating source when an actual steering angle exceeds the upper limit value. CONSTITUTION: Pressure rising to a wheel cylinder 28 when acceleration slip control is performed by brake control is directly performed by the pump 14 of a hydraulic source and a pump 20 for anti-skid(ABS). At first, the wheel velocity of left and right front wheels 30 which are a rolling wheel is computed from the detected signals of wheel velocity sensors 32 in a control device 36 to compute the velocity of a vehicle body from the velocity of wheels. Next, a road friction factor is sought by estimation computation. A steering angle (limitation steering angle) at which regular-circle turning can be performed is computed from the road friction factor and the velocity of a vehicle body. When an actual steering angle currently operated exceeds the limitation steering angle, a motor 15 for the pump 14 is driven to provide against the generation of wheel spin.

5. 发明专利

JPH07125622A DEVICE FOR CONTROLLING WHEEL SLIP 失效
公开(公告)号：JPH07125622A
公开(公告)日：1995-05-16
申请号：JP27265393
申请日：1993-10-29
申请人： TOYOTA MOTOR CORP
发明人： SASAHARA KENJI , NISHIKATA HIROTO
IPC分类号： B60T8/175 , B60T8/172 , B60T8/1763 , B60T8/58
摘要： PURPOSE:To prevent a vehicle from moving backward on a slope, and improve the starting quality by braking and stopping the vehicle by a brake control means when the rotational directions of wheels do not agree with each other based on the detected results of a driven wheel rotational direction detecting means and a driving wheel rotational direction detecting means. CONSTITUTION:A driven wheel rotational direction detecting means A4 to detect the wheel rotational direction of the driven wheels W1 and a driving wheel rotational direction detecting means A5 to detect the wheel rotational direction of the driving wheels W2 are provided. A vehicle having wheels W1, W2 is braked and stopped by a brake control means A6 when the wheel rotational direction of the wheels W1 does not agree with the wheel rotational direction of the driving wheels W2 based on the detected results of the driven wheel rotational direction detecting means A4 and the driving wheel rotational direction detecting means A5. This constitution detects that the vehicle having the wheels W1, W2 is moving backward, and the brake control means A6 brakes and stops the vehicle. This prevents the vehicle from moving backward on a slope of low mu, and improves the starting quality.

6. 发明专利

JPS61294260A TORQUE CONVERTER WITH DIRECT-COUPLED CLUTCH 失效
公开(公告)号：JPS61294260A
公开(公告)日：1986-12-25
申请号：JP13506985
申请日：1985-06-20
申请人： TOYOTA MOTOR CORP
发明人： SASAHARA KENJI
IPC分类号： F16H45/02
摘要： PURPOSE:To attenuate the torsional vibration by providing an engaging member, which pushes by pressure a plate against another plate as a direct-coupled clutch piston moves toward a front cover, to the clutch piston. CONSTITUTION:A snap ring 15 is used as an engaging member, which presses by pressure a spring location 12, or the second plate, so that a piston 7 can be engaged with the spring location 12 in the direction to which the piston 7 moves. Accordingly, the torsional vibration, which is introduced via both a front cover 1 and the piston 7, is attenuated by not only the spring force of a coil spring 11 but a frictional force generated in between the spring location 12 and a drive plate 9. With this contrivance, the torsional-vibration-attenuating- characteristics at the time of direct coupling can be enhanced.

7. 发明专利

JP2003276411A Tire condition estimating device 审中-公开
标题翻译：轮胎状况估算装置
公开(公告)号：JP2003276411A
公开(公告)日：2003-09-30
申请号：JP2002084214
申请日：2002-03-25
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： NAKAJIMA SEIICHI , SASAHARA KENJI
IPC分类号： G01L17/00 , B60C23/06
摘要： PROBLEM TO BE SOLVED: To enable estimation of the tread lift condition of a tire, in arts to estimate the condition of the tire of a vehicle by a dynamic load radius system.
SOLUTION: Based on a wheel speed detected by a wheel speed sensor, dynamic load radius reflecting values α1 and α2 reflecting the dynamic load radiuses of the tire are computed (S34 and S38). Based on the amount of change Δαper a specified amount of increase ΔV=(V1-v2) of a car speed V of the computed dynamic load radius reflecting value, the tread lift condition of the tire is estimated as the condition of the tire (S40 and S41).
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了能够估计轮胎的胎面剥离条件，在本领域中通过动态负载半径系统来估计车辆的轮胎的状况。解决方案：基于由车轮速度传感器检测的车轮速度，计算反映轮胎的动态负载半径的动态负载半径反映值α1和α2（S34和S38）。根据计算出的动态负荷半径反映值的车速V的规定增加量ΔV=（V1-v2）的变化量Δαper，轮胎的胎面剥离条件被推定为轮胎的状态（S40 和S41）。版权所有（C）2003，JPO

8. 发明专利

JPH07127491A WHEEL SLIP CONTROL DEVICE 失效
公开(公告)号：JPH07127491A
公开(公告)日：1995-05-16
申请号：JP27579293
申请日：1993-11-04
申请人： TOYOTA MOTOR CORP
发明人： YAMAMOTO SHINSUKE , SASAHARA KENJI , SAKAMOTO JUNICHI , NAKAJIMA SEIICHI
IPC分类号： B60W10/04 , B60W10/00 , B60W10/06 , B60W10/18 , B60W10/184 , F02D29/02 , F02D41/04 , B60K41/20
摘要： PURPOSE:To provide a wheel slip control device which is constituted to estimate the occurrence of the slip of a drive wheel, suppress the occurrence of the slip of the drive wheel, and improve running stability. CONSTITUTION:A wheel slip control device comprises a running state detecting means A1 to detect the running state of a vehicle; a slip occurrence estimating means A3 to estimate the occurrence of the slip of a drive wheel S2 based on data detected by the running state detecting means A1; and a drive force control means A4 to effect control so that a drive force transmitted to the drive wheel A2 when it is estimated by the slip occurrence estimating means A3 that the slip of the drive wheel A2 occurs.

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