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1. 发明授权

US06607061B2 Electromagnetic clutch control system 失效
公开(公告)号：US06607061B2
公开(公告)日：2003-08-19
申请号：US10060056
申请日：2002-01-31
申请人： Masakatsu Hori , Ryuji Asada , Akihiro Iwazaki , Shinji Ohkuma , Tatsuhiro Tomari , Kiyoshi Wakamatsu
发明人： Masakatsu Hori , Ryuji Asada , Akihiro Iwazaki , Shinji Ohkuma , Tatsuhiro Tomari , Kiyoshi Wakamatsu
IPC分类号： F16D27115
CPC分类号： F16D27/12 , B60K17/20 , B60K23/04 , F16D48/064 , F16D2500/1022 , F16D2500/5023 , F16D2500/50275 , F16D2500/70404 , F16D2500/70418
摘要： The engagement force of an electromagnetic clutch can be precisely controlled at a target engagement force by a simple structure even when an air gap of the electromagnetic clutch varies. An electromagnetic clutch control system includes magnetic flux density sensors, a target engagement force calculating device, a target magnetic flux density calculating device, and a feedback control device. The target magnetic flux density calculating device calculates a target magnetic flux density &phgr;t based on a target engagement force Tt of electromagnetic clutches calculated by the target engagement force calculating device. The current supplied to the electromagnetic clutches is feedback controlled by the feedback control device so that an actual magnetic flux density &phgr; detected by the magnetic flux density sensors agrees with the target magnetic flux density &phgr;t. This allows a target engagement force to be generated in the electromagnetic clutches by making the actual magnetic flux density agree precisely with the target magnetic flux density, even when the air gap varies due to wear of a frictional engagement member, etc. and the relationship between the actual magnetic flux density and the current supplied to the electromagnetic clutches changes.

2. 发明授权

US06640178B2 Process for estimating drive torque in vehicle 失效
标题翻译：估算车辆驾驶扭矩的过程
公开(公告)号：US06640178B2
公开(公告)日：2003-10-28
申请号：US09987704
申请日：2001-11-15
申请人： Kiyoshi Wakamatsu , Ryuji Asada , Akihiro Iwazaki , Shinji Okuma , Tatsuhiro Tomari , Masakatsu Hori
发明人： Kiyoshi Wakamatsu , Ryuji Asada , Akihiro Iwazaki , Shinji Okuma , Tatsuhiro Tomari , Masakatsu Hori
IPC分类号： B60K4112
CPC分类号： B60W10/06 , B60K17/20 , B60K23/04 , B60W10/11 , B60W30/1819 , B60W30/188 , B60W2510/105 , B60W2520/10 , B60W2520/125 , B60W2530/10 , B60W2530/20 , B60W2710/105 , F02D2200/1004 , F16H2059/467 , Y10T477/675
摘要： In a vehicle in which a torque generated in an engine is transmitted to driven wheels through a torque converter and an automatic transmission, when a speed ratio e in the torque converter is equal to or larger than a predetermined value (e.g., 0.85), and the accuracy of estimating a capacity &tgr; of the torque converter is low, an estimated engine torque Ti is multiplied by a torque ratio k of the torque converter to estimate a drive torque Td. When the speed ratio e in the torque converter is smaller than the predetermined value, and a response lag is produced in the transmission of the engine torque, a drive torque Td is estimated from an engine rotational sped Ne and the speed ratio e in the torque converter. During shifting of the automatic transmission, a drive torque Td is estimated from a wheel speed V. Thus, a correct drive torque can be estimated.
摘要翻译：在发动机中产生的扭矩通过变矩器和自动变速器传递到从动轮的车辆中，当变矩器中的变速比e等于或大于预定值（例如0.85）时，以及估计变矩器的电容tau的精度低，推定发动机转矩Ti与变矩器的转矩比k相乘以推定转矩Td。当变矩器中的速比e小于预定值时，在发动机扭矩的传递中产生响应滞后，根据发动机转速Ne和扭矩的变速比e推定驱动转矩Td 转换器。在自动变速器的换挡期间，从车轮速度V估计驱动转矩Td。因此，可以估计正确的驱动转矩。

3. 发明授权

US06543595B2 Driving force distribution device for vehicle 失效
标题翻译：车辆驱动力分配装置
公开(公告)号：US06543595B2
公开(公告)日：2003-04-08
申请号：US09818974
申请日：2001-03-27
申请人： Shinji Okuma , Ryuji Asada , Akihiro Iwazaki , Takashi Kuribayashi , Tatsuhiro Tomari , Masakatsu Hori , Kazuhiro Wada , Kiyoshi Wakamatsu
发明人： Shinji Okuma , Ryuji Asada , Akihiro Iwazaki , Takashi Kuribayashi , Tatsuhiro Tomari , Masakatsu Hori , Kazuhiro Wada , Kiyoshi Wakamatsu
IPC分类号： F16D1900
CPC分类号： F16D27/14 , B60K23/04 , F16H48/30
摘要： A driving force distribution device which controls the engagement forces of electromagnetic clutches and which govern the torque distribution between the driving wheels of a vehicle by calculating a target magnetic flux density and converting the same into a target excitation current. Since the relationship between the target magnetic flux density and the target excitation current changes according to a decrease in the air gaps accompanying wear of the frictional engagement members of the electromagnetic clutches, a relationship between the magnetic flux density and the excitation current is determined by applying current to the electromagnetic clutches when torque distribution control is not being carried out such as when the system is started, and the target excitation current is calculated from the target magnetic flux density based on the determined relationship. Since there is no need to detect dynamic changes in the magnetic flux density, inexpensive devices can be used as magnetic flux density detecting means so contributing to a reduction in the cost.
摘要翻译：一种驱动力分配装置，其通过计算目标磁通密度并将其转换为目标励磁电流来控制电磁离合器的接合力并且控制车辆的驱动轮之间的转矩分布。由于目标磁通密度和目标激励电流之间的关系随着伴随电磁离合器的摩擦接合构件的磨损的气隙的减小而变化，所以磁通密度和激励电流之间的关系通过应用基于所确定的关系，根据目标磁通密度计算当系统启动时不进行转矩分配控制时的电磁离合器的电流。由于不需要检测磁通密度的动态变化，所以可以使用便宜的装置作为磁通密度检测装置，从而有助于降低成本。

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