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Vehicle-use generator

  • US 20070046265A1
  • Filed: 08/25/2006
  • Published: 03/01/2007
  • Est. Priority Date: 08/29/2005
  • Status: Active Grant
First Claim
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1. A vehicle-use generator comprising:

  • a rotor rotatably mounted on a shaft and having a field coil wound therearound;

    a stator having stator winding wound therearound and fixedly disposed so as to form a gap with the rotor;

    a cooling fan mounted to said rotor;

    a pulley belt-driven by a vehicle engine and coupled to said shaft through an overrunning clutch provided therein; and

    a power generation control device controlling an excitation current flowing into said field coil such that an output voltage of said vehicle-use generator is kept at a target regulation voltage;

    wherein said overrunning clutch is configured to idle when a rotational speed of said pulley is lower than a rotational speed of said rotor to inhibit torque transmission from said pulley to said rotor, and said power generation control device is configured to forcibly increase said excitation current on a temporary basis when an upshift operation of a transmission of said vehicle is performed.

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