Abstract: To provide a control device that can prevent an increase in a processing load and that can effectively allocate a radio resource. A control device (30) according the present disclosure includes: a deciding unit (31) configured to decide whether or not an interval between generation of a first flow that is generated when performing radio communication between a communication terminal (10) and a base station (20) and generation of a second flow that is generated after the generation of the first flow exceeds a permissible delay time of the first flow; and a determination unit (32) configured to determine deletion of non-transmitted data related to the communication terminal (10) after lapse of the permissible delay time of the first flow when it is decided that the generation interval exceeds the permissible delay time of the first flow.

Abstract: A vehicle alternator has a rotor having plural claw poles and a stator placed at the outer circumference of the surface of the rotor. Plural grooves are formed in a specified rear area on a surface of each claw pole faced to the stator. The specified rear area is an approximate rear half area on the surface of the claw pole along a rotating direction of the rotor. The grooves are formed in parallel to each other. Each groove has one or a combination of a U-letter shaped groove having a circulation-arc shaped bottom, a rectangle shaped groove having a rectangle shaped bottom, and the like. The configuration of each claw pole ensures the reduction of generating an eddy current on the surface of each claw pole and thereby prevents a reduction of output power of the vehicle alternator.

Abstract: The alternator (AC generator) of this invention is provided with a front (a second) housing, a rear (a first) housing, and a bolt. A bolt hole is formed in the front housing. A nut part that the bolt is screwed into is formed in the bolt hole. Another bolt hole that the bolt is inserted into is formed in the rear housing. The bolt has a large diameter portion that is inserted into the bolt hole of the rear housing The entire circumference of the outer surface of the large diameter portion contacts the inner side of the bolt hole. Therefore, when the bolt is tightened, positioning of the direction of a circumference of the first housing to the second housing can be performed by inserting the bolt so that the outer surface of the large diameter portion contacts the inner side of the bolt hole. Thus, positioning of the housings can be carried out without enlarging its size, and without using a jig, etc.

Abstract: In a vehicle AC generator having a housing that covers a voltage regulator equipped with external cooling fins, and a cooling fan which rotates with the generator rotor to draw external air through the interior of the housing, an aperture is formed in the housing at a position corresponding to the voltage regulator, and outer end portions of the cooling fins protrude through the aperture to positions beyond the outer circumference of the housing, to dissipate heat from the vehicle-mounted regulator during low-speed operation of the generator, when the rate of air flow through the aperture is low.

Abstract: A vehicle alternator has a rotor having plural claw poles and a stator placed at the outer circumference of the surface of the rotor. Plural grooves are formed in a specified rear area on a surface of each claw pole faced to the stator. The specified rear area is an approximate rear half area on the surface of the claw pole along a rotating direction of the rotor. The grooves are formed in parallel to each other. Each groove has one or a combination of a U-letter shaped groove having a circulation-arc shaped bottom, a rectangle shaped groove having a rectangle shaped bottom, and the like. The configuration of each claw pole ensures the reduction of generating an eddy current on the surface of each claw pole and thereby prevents a reduction of output power of the vehicle alternator.

Abstract: In a vehicle AC generator having a housing that covers a voltage regulator equipped with external cooling fins, and a cooling fan which rotates with the generator rotor to draw external air through the interior of the housing, an aperture is formed in the housing at a position corresponding to the voltage regulator, and outer end portions of the cooling fins protrude through the aperture to positions beyond the outer circumference of the housing, to dissipate heat from the vehicle-mounted regulator during low-speed operation of the generator, when the rate of air flow through the aperture is low.