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Patent Searching and Data


Title:
四輪駆動制御装置
Document Type and Number:
Japanese Patent JP4050519
Kind Code:
B2
Abstract:

To provide a four-wheel drive controller in which a secondary drive means becomes a load of a main drive means, decrease of durability of a clutch and the secondary drive means can be prevented and increase in an energy consumption can be prevented in the controller in which main drive wheels are driven by the main drive means and driven wheels are driven by the secondary drive means.

The four-wheel drive controller comprises a rear side clutch 7 provided between rear wheels RRW and a motor 6, an arithmetic unit 10a for controlling an intermission switching of the clutch 7 based on a running state of a vehicle, and a motor rotational speed sensor 11 for detecting a rotational speed of the motor 6. In this controller, the unit 10a conducts a rotational speed dealing control for operating to disconnect the clutch 7 when the rotational speed detected by the sensor 11 exceeds a rotational speed threshold value.

COPYRIGHT: (C)2003,JPO


Inventors:
Eiji Futagawa
Application Number:
JP2002018906A
Publication Date:
February 20, 2008
Filing Date:
January 28, 2002
Export Citation:
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Assignee:
株式会社日立製作所
International Classes:
B60K17/04; B60K6/20; B60W10/02; B60K6/387; B60K6/44; B60K6/442; B60K6/52; B60K6/54; B60K6/543; B60K6/547; B60K17/02; B60K17/356; B60K23/08; B60L50/16; B60W10/04; B60W10/08; B60W20/00; F16D48/06
Domestic Patent References:
JP2002240585A
JP2000272367A
JP11091389A
JP2000253512A
JP2003156079A
JP2000343963A
JP9315164A
JP11240351A
JP2000355227A
JP2001287550A
Attorney, Agent or Firm:
Masamichi Ayata
Sadaaki Imamura
Eiichi Sakamoto