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公开(公告)号：US5047940A
公开(公告)日：1991-09-10
申请号：US362869
申请日：1989-06-07
申请人： Toru Onaka , Toshiaki Tsuyama , Kazutoshi Nobumoto , Fumio Kageyama , Akira Sone , Makoto Teshima
发明人： Toru Onaka , Toshiaki Tsuyama , Kazutoshi Nobumoto , Fumio Kageyama , Akira Sone , Makoto Teshima
IPC分类号： B60K28/16 , B60T8/175 , B60T8/48 , F16H59/08 , F16H59/50 , F16H61/00 , F16H61/02 , F16H61/16
CPC分类号： B60K28/165 , B60T8/175 , B60T8/48 , F16H61/0213 , F16H2059/082 , F16H2059/506 , F16H2061/0096 , F16H61/16
摘要： Slip control is carried out so as to reduce torque applied to the driven wheels by reducing torque generated by the engine when a slip value against the driven wheels on pavement is larger than a predetermined value. A shift characteristic of the automatic transmission interposed between the engine and the driven wheels is set as a first shift characteristic which is a basic characteristic at the time of ordinary running where no slip control is carried out and as a second shift characteristic set so as to become at least unlikely to cause downshifting during slip control compared with said first shift characteristic. As the slip control terminates, a return of the first shift characteristic is prohibited when the torque generated by the engine is large (for example, when a degree of operation of an accelerator is not zero) or when downshifting is caused if based on the first shift characteristics.
摘要翻译： 执行滑动控制，以便当在路面上的从动轮的滑移值大于预定值时，通过减小由发动机产生的扭矩来减小施加到从动轮的扭矩。 插入在发动机和从动轮之间的自动变速器的换档特性被设定为作为不进行滑差控制的普通行驶时的基本特性的第一变速特性，作为第二变速特性， 与所述第一偏移特性相比，在滑动控制期间变得至少不太可能导致降档。 当滑动控制终止时，当发动机产生的扭矩大时（例如，当加速器的操作程度不为零时）或当基于第一换档特性而产生降档时，禁止返回第一换档特性 移位特征。
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公开(公告)号：US5297662A
公开(公告)日：1994-03-29
申请号：US718638
申请日：1991-06-21
CPC分类号： B60K28/16 , Y10T477/814 , Y10T477/816
摘要： A traction control system for a vehicle has a sub-throttle valve provided in an intake passage of the engine in series to a main throttle valve which is operatively connected to an accelerator pedal to open and close in response to operation of the accelerator pedal. An engine output controller controls opening of the sub-throttle valve to control the output of the engine so that the slip value of the driving wheels converges on a target slip value. The engine output controller once moves the sub-throttle valve to an initial opening when the slip value of the driving wheels exceeds the target slip value and then controls the opening of the sub-throttle valve to control the output of the engine so that the slip value of the driving wheels converges on a target slip value. The initial opening is set to be a fixed value when the opening of the main throttle valve is not larger than a predetermined opening and to be substantially equal to the opening of the main throttle valve when the opening of the main throttle valve is larger than the predetermined opening. The fixed value is not smaller than the predetermined opening of the main throttle valve.
摘要翻译： 用于车辆的牵引力控制系统具有设置在发动机的进气通道中的副节气门，其与主节流阀串联，该节气门可操作地连接到加速踏板以响应于加速器踏板的操作而打开和关闭。 发动机输出控制器控制副节流阀的打开以控制发动机的输出，使得驱动轮的滑移值收敛于目标滑移值。 当驱动轮的滑移值超过目标滑移值时，发动机输出控制器一次将副节流阀移动到初始开度，然后控制副节流阀的打开以控制发动机的输出，使得滑差 驱动轮的值收敛于目标滑移值。 当主节流阀的开度不大于预定开度时，将初始开度设定为固定值，并且当主节流阀的开度大于主节流阀的开度时，初始开度基本上等于主节流阀的开度 预定开口。 固定值不小于主节流阀的预定开度。
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公开(公告)号：US5117934A
公开(公告)日：1992-06-02
申请号：US673460
申请日：1991-03-22
申请人： Toshiaki Tsuyama , Kazutoshi Nobumoto , Kaoru Sotoyama , Toru Onaka , Fumio Kageyama , Haruki Okazaki , Makoto Kawamura
发明人： Toshiaki Tsuyama , Kazutoshi Nobumoto , Kaoru Sotoyama , Toru Onaka , Fumio Kageyama , Haruki Okazaki , Makoto Kawamura
CPC分类号： B60T8/172 , B60T8/175 , B60T2210/14
摘要： In a slip control system for a vehicle a slip ratio of driving wheels of the vehicle is detected, and the slip of the driving wheels is controlled to converge on a predetermined target slip ratio when the slip ratio of the driving wheels exceeds a predetermined threshold slip ratio. When the vehicle is running a rough road, the threshold slip ratio is increased. The running condition of the vehicle is detected and increase of the threshold slip ratio is inhibited depending on the running condition of the vehicle.
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公开(公告)号：US5329453A
公开(公告)日：1994-07-12
申请号：US719958
申请日：1991-06-24
摘要： The braking force to the driven wheels is subjected to feedback control so as to allow the actual slip value of the driven wheels to agree with a predetermined target value for controlling the brake. The control amount for the feedback control is determined by differentiation control. The feedback control amount contains a first control amount corresponding to a predetermined basic travelling state and a second control amount corresponding to a particular travelling state. In ordinary travelling state, the braking force is controlled by the first control amount, and the braking force is controlled by the second control amount when the automotive vehicle is travelling in such a particular state. When the the vehicle is travelling on a bad road, the second control amount is set so as to loosen the braking force, as compared with the first control amount. Alternatively, when the vehicle is cornering, the second control amount is set as to tighten the braking force as compared with the first control amount.
摘要翻译： 对从动轮的制动力进行反馈控制，以使得从动轮的实际滑移值与用于控制制动器的预定目标值一致。 反馈控制的控制量由微分控制决定。 反馈控制量包含对应于预定基本行驶状态的第一控制量和对应于特定行驶状态的第二控制量。 在普通行驶状态下，制动力由第一控制量控制，并且当机动车辆在这样的特定状态下行驶时，通过第二控制量来控制制动力。 当车辆在恶劣道路上行驶时，与第一控制量相比，设定第二控制量以使制动力松动。 或者，当车辆转弯时，将第二控制量设定为与第一控制量相比紧固制动力。
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公开(公告)号：US5190361A
公开(公告)日：1993-03-02
申请号：US814601
申请日：1991-12-30
申请人： Toru Onaka , Toshiaki Tsuyama , Kazutoshi Nobumoto
发明人： Toru Onaka , Toshiaki Tsuyama , Kazutoshi Nobumoto
IPC分类号： B60T8/172 , B60T8/1763 , B60T8/66
CPC分类号： B60T8/17636
摘要： A shift is implemented from the control for elevating the braking force to the control for retaining the braking force when deceleration of the wheel exceeds a first predetermined threshold value when the wheels are braked. The first predetermined threshold value is so set as to become smaller as an assumed road surface friction coefficient .mu. is smaller. The first threshold value is further altered to a larger value by altering the assumed road surface friction coefficient .mu. to a higher one when the period of time required from the start of the control for elevating the braking force to the start of the following control for retaining the braking force is equal to or shorter than a predetermined period of time.
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公开(公告)号：US5365443A
公开(公告)日：1994-11-15
申请号：US711876
申请日：1991-06-07
摘要： A traction control device operates to determine the speed of each of the left and right drive wheels of a vehicle, determine the speed of each of the left and right passive wheels of the vehicle, calculate the actual slip rate of the drive wheels of the vehicle directly based on the measurements of the speeds for the drive and passive wheels, establish a target slip rate and control the driving condition of the vehicle by making the actual slip rate equal the target slip rate. The actual slip rate is matched to the target slip rate by controlling engine output and braking power. The step of controlling the driving condition of the vehicle by controlling the engine output and the braking power is carried out according to the time differential of the difference between the actual slip rate and the target slip rate at least until the actual slip rate matches the target slip rate for the first time. After the actual slip rate has matched the target slip rate at least once, the step of controlling is carried out according to the proportion of the difference between the actual and the target slip rates.
摘要翻译： 牵引控制装置用于确定车辆的左右驱动轮中的每一个的速度，确定车辆的左右两侧的每一个的速度，计算车辆的驱动轮的实际滑移率 直接基于对驱动和被动轮的速度的测量，通过使实际滑移率等于目标滑移率来建立目标滑移率并控制车辆的驾驶状况。 通过控制发动机输出和制动功率，实际滑差率与目标滑差率相匹配。 通过控制发动机输出和制动功率来控制车辆的行驶状态的步骤根据实际滑移率和目标滑移率之间的差异的时间差进行至少直到实际滑移率与目标 滑差率是第一次。 在实际滑移率与目标滑移率匹配至少一次之后，根据实际和目标滑移率之间的差异的比例来执行控制步骤。
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公开(公告)号：US5325300A
公开(公告)日：1994-06-28
申请号：US124833
申请日：1993-09-09
IPC分类号： B60T8/172 , B60T8/175 , B60T8/1763 , F02D29/02 , B60T8/32
CPC分类号： B60T8/175 , B60T2270/208
摘要： A traction control system for a motor vehicle having driving wheels and driven wheels includes a device for detecting the speed of each of the driving wheels of the vehicle, a device for detecting the speed of each of the driven wheels of the vehicle, a device for calculating a slip value of the driving wheels based on the detected speeds of the driving and driven wheels, a traction control device for controlling the driving wheel so that the slip value of each driving wheel is equal to a predetermined desired slip value when the slip value of each driving wheel is greater than the predetermined desired slip value, and a device for estimating a friction coefficient of a road surface which is employed when the predetermined desired slip value is determined. The estimating device updates the friction coefficient of the road surface previously estimated with the friction coefficient of the road surface newly estimated when the slip value of the driving wheel is located in a predetermined region.
摘要翻译： 用于具有驱动轮和从动轮的机动车辆的牵引力控制系统包括用于检测车辆的每个驱动轮的速度的装置，用于检测车辆的每个从动轮的速度的装置， 基于检测到的驱动轮和从动轮的速度来计算驱动轮的滑移值;牵引控制装置，用于控制驱动轮，使得当滑动值为每个驱动轮的滑移值等于预定的期望滑移值时 每个驱动轮的大小大于所述预定的滑动值，以及用于估计在确定了所述预定滑动值时采用的路面的摩擦系数的装置。 当驱动轮的滑移值位于预定区域时，估计装置更新由新估计的路面的摩擦系数先前估计的路面的摩擦系数。
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公开(公告)号：US5148884A
公开(公告)日：1992-09-22
申请号：US678490
申请日：1991-04-01
IPC分类号： B60W10/04 , B60T8/175 , B60T8/48 , B60W10/06 , B60W10/10 , B60W10/18 , B60W10/188 , F02D29/02
摘要： A slip of the driven wheels is converged by causing the torque generated by the engine to be reduced and applying braking force when a slip of the driven wheel becomes large during accelerating. Control of the application of the braking force to the left-hand and right-hand driven wheels is made individually and separately from each other. When such an incident occurs as causing no normal control of decreasing the torque generated by the engine to be made, the contents of control of application of the braking force is changed so as to apply the same degrees of the braking force to both of the left-hand and right-hand driven wheels.
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9.发明授权
公开(公告)号：US5353225A
公开(公告)日：1994-10-04
申请号：US718959
申请日：1991-06-21
CPC分类号： B60T8/175 , B60T2270/208
摘要： A traction control system for a motor vehicle having driving wheels and driven wheels includes a device for detecting the speed of each of the driving wheels of the vehicle, a device for detecting the speed of each of the driven wheels of the vehicle, a device for calculating a slip value of the driving wheels based on the detected speeds of the driving and driven wheels, a traction control device for controlling the driving wheel so that the slip value of each driving wheel is equal to a predetermined desired slip value when the slip value of each driving wheel is greater than the predetermined desired slip value, and a device for estimating a friction coefficient of a road surface which is employed when the predetermined desired slip value is determined. If slip of the driving wheel occurs when the vehicle is started, the estimating device calculates an acceleration of the driving wheel. The friction coefficient of the road surface is estimated based on an engine output when the acceleration of the driving wheel is greater than a predetermined value.
摘要翻译： 用于具有驱动轮和从动轮的机动车辆的牵引力控制系统包括用于检测车辆的每个驱动轮的速度的装置，用于检测车辆的每个从动轮的速度的装置， 基于检测到的驱动轮和从动轮的速度来计算驱动轮的滑移值;牵引控制装置，用于控制驱动轮，使得当滑动值为每个驱动轮的滑移值等于预定的期望滑移值时 每个驱动轮的大小大于所述预定的滑动值，以及用于估计在确定了所述预定滑动值时采用的路面的摩擦系数的装置。 如果在车辆启动时发生驱动轮的滑动，则估计装置计算驱动轮的加速度。 当驱动轮的加速度大于预定值时，基于发动机输出来估计路面的摩擦系数。
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公开(公告)号：US5328006A
公开(公告)日：1994-07-12
申请号：US718962
申请日：1991-06-21
IPC分类号： B60T8/172 , B60T8/175 , B60T8/1763 , B60K41/20
CPC分类号： B60T8/175 , B60T2270/208 , Y10T477/814 , Y10T477/816 , Y10T477/817
摘要： A traction control system for a motor vehicle having driving wheels and driven wheels includes a device for detecting the speed of each of the driving wheels of the vehicle, a device for detecting the speed of each of the driven wheels of the vehicle, a device for calculating a slip value of the driving wheels based on the detected speeds of the driving and driven wheels, a traction control device for controlling the driving wheel so that the slip value of each driving wheel is equal to a predetermined desired slip value when the slip value of each driving wheel is greater than the predetermined desired slip value, and a device for estimating a friction coefficient of a road surface which is employed when the predetermined desired slip value is determined. The estimating device calculates, in a first predetermined time period immediately after the traction control is started, an acceleration of the driven wheel based on a speed difference of the driven wheel during a second predetermined time period and an acceleration of the driven wheel based on a speed difference of the driven wheel during a third predetermined time period after the first predetermined time period has passed. The estimating device then estimates the friction coefficient of the road surface by using the calculated acceleration of the driven wheel.
摘要翻译： 用于具有驱动轮和从动轮的机动车辆的牵引力控制系统包括用于检测车辆的每个驱动轮的速度的装置，用于检测车辆的每个从动轮的速度的装置， 基于检测到的驱动轮和从动轮的速度来计算驱动轮的滑移值;牵引控制装置，用于控制驱动轮，使得当滑动值为每个驱动轮的滑移值等于预定的期望滑移值时 每个驱动轮的大小大于所述预定的滑动值，以及用于估计在确定了所述预定滑动值时采用的路面的摩擦系数的装置。 估计装置在紧接牵引力控制开始后的第一预定时间段内，基于来自第二预定时间段期间的从动轮的速度差和从动轮的加速度，基于 在经过第一预定时间段之后的第三预定时间段期间从动轮的速度差。 估计装置然后通过使用所计算的从动轮的加速度来估计路面的摩擦系数。
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