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1. 发明专利

JP2004114819A Driving force distribution control device of four-wheel drive vehicle 有权
公开(公告)号：JP2004114819A
公开(公告)日：2004-04-15
申请号：JP2002280653
申请日：2002-09-26
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： IIDA NORIO
IPC分类号： B60K17/348 , B60K23/08 , F16D27/115 , F16D48/06 , F16D48/12
CPC分类号： B60K23/0808 , B60W2520/263 , B60W2520/28 , B60W2710/105 , F16D48/064 , F16D2500/1022 , F16D2500/10431 , F16D2500/1045 , F16D2500/30421 , F16D2500/31 , F16D2500/3125 , F16D2500/50287 , F16D2500/702 , F16D2500/7044
摘要： PROBLEM TO BE SOLVED: To provide a driving force distribution control device of a four-wheel drive vehicle for preventing abnormal noise occurring when a friction clutch is released at the relative rotational contact portion of the clutch from a pressed state by torsional torque in advance. SOLUTION: The drive force distribution control device of the four-wheel drive vehicle to distribute a drive force to front wheels 15 and 16 via an electronic control coupling 10 comprises an input history determination step S48 of determining whether or not there is an input history that clutch input torque is not less than a predetermined value α when command torque to the electronic control coupling 10 is not less than the predetermined value α, a command torque determination step S47 of determining whether or not present command torque to the electronic control coupling 10 is not less than the predetermined value α, an input torque inversion determination step S49 of determining whether or not the torque input direction in the electronic control coupling 10 is inverted, and a step S52 of outputting a command of obtaining abnormal noise countermeasure command torque to reduce the present command torque to the electronic control coupling 10 if an input history condition, a command torque condition and a torque inversion condition are jointly established. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2003327000A Front and rear wheel torque distribution controller for four-wheel drive vehicle 有权
标题翻译：前轮和后轮扭矩分配控制器用于四轮驱动车辆
公开(公告)号：JP2003327000A
公开(公告)日：2003-11-19
申请号：JP2002137219
申请日：2002-05-13
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： IIDA NORIO , FUKUDA YOSHIYUKI
IPC分类号： B60K17/348
CPC分类号： Y02T10/84
摘要： PROBLEM TO BE SOLVED: To prevent a control clutch from being slid to protect the clutch surely, in a traveling scene where a critical zone of torque transmission is carried out frequently while securing enhancement of durability in a driving system provided with the control clutch. SOLUTION: In a four-wheel drive vehicle having the electromagnetic clutch (control clutch) 10 for controlling torque distribution transmitted from an engine 1 to front and rear wheels 6, 7, 14, 15, a means for conducting clutch protection control is provided to calculate input energy E applied onto the electromagnetic clutch 10 based on a rotational speed difference-between-front-and-rear-wheels ΔV and clutch transmission torque TE, to predict fluctuation of a clutch temperature elevated or lowered with the lapse of time in response to a level of the calculated input energy E, to conduct automatically switching to a LOCK mode for suppressing the sliding of the electromagnetic clutch 10 when an estimated clutch temperature T1n calculated based on the temperature fluctuation prediction comes to a clutch protection judge- determining temperature Tp or more, and to set a command current value I to the electromagnetic clutch 10 to a fixed current value Ib higher than a current value Ia in the time when switched to a connection mode by selection of a driver. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题为了防止控制离合器滑动以确保保护离合器，在确保提供具有控制的驱动系统中的耐久性的同时，在频繁地执行转矩传递的临界区域的行驶场合离合器。解决方案：在具有用于控制从发动机1传递到前轮和后轮6,7和14,15的扭矩分配的电磁离合器（控制离合器）10的四轮驱动车辆中，用于进行离合器保护控制的装置被设置为基于前后车轮ΔV与离合器传递转矩TE之间的转速差来计算施加到电磁离合器10上的输入能量E，以预测离合器温度随着经过的升高或降低的波动响应于计算的输入能量E的水平，当基于温度波动预测计算出的估计离合器温度T1n进入到离合器保护判断步骤时，自动切换到用于抑制电磁离合器10的滑动的LOCK模式，确定温度Tp以上，并且将电磁离合器10的指令电流值I设定为高于电流值Ia的固定电流值Ib 在通过选择驱动程序切换到连接模式的时候。版权所有（C）2004，JPO

3. 发明专利

JP2007223604A Four-wheel drive controller 有权
标题翻译：四轮驱动控制器
公开(公告)号：JP2007223604A
公开(公告)日：2007-09-06
申请号：JP2007153100
申请日：2007-06-08
申请人： Nissan Motor Co Ltd , 日産自動車株式会社
发明人： IIDA NORIO , FUKUDA YOSHIYUKI
IPC分类号： B60K17/348
摘要： PROBLEM TO BE SOLVED: To optimally set matching between a transmission torque of a torque distribution clutch and drive torque of a rotation drive source in a four-wheel drive controller for directly transmitting the rotation drive source to a main drive wheel and transmitting it to a driven wheel through the torque distribution clutch. SOLUTION: Drive force outputted from an engine 2 is directly transmitted to one main drive wheel on a front wheel side and a rear wheel side, it is transmitted to the other drive wheel through the torque distribution clutch 6 having the small maximum transmission torque to the drive torque of the engine 2, and the transmission torque of the torque distribution clutch 6 is controlled by a clutch control unit 10. At this time, after the transmission torque of the torque distribution clutch 6 is increased and the increased transmission torque reaches a previously set predetermined value, the drive torque of the engine 2 is reduced. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了最佳地设定扭矩分配离合器的传动扭矩和用于将旋转驱动源直接传递到主驱动轮的四轮驱动控制器中的旋转驱动源的驱动转矩之间的匹配，并且传递它通过扭矩分配离合器到一个从动轮。解决方案：从发动机2输出的驱动力直接传递到前轮侧和后轮侧的一个主驱动轮，通过具有小的最大变速器的转矩分配离合器6传递到另一个驱动轮扭矩与发动机2的驱动扭矩的转矩，转矩分配离合器6的传递扭矩由离合器控制单元10控制。此时，在转矩分配离合器6的传递转矩增加并且增加的传递转矩达到预先设定的预定值，发动机2的驱动转矩减小。版权所有（C）2007，JPO＆INPIT

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