• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a starting motor driving circuit for an idling stop system, comprising: a magnetic relay for supplying / blocking battery power to the starting motor, and 'on' the magnetic relay when the engine is restarted by the idling stop system. It is configured to include an electronic control unit for controlling the amount of current of the battery power supplied to the starting motor through the magnetic relay, to prevent the rapid consumption of the battery current at start-up, and to increase the torque of the starting motor gradually Therefore, there is an effect that can significantly reduce engine fluctuations at start-up.
    公开号:KR20020047558A
    申请号:KR1020000076041
    申请日:2000-12-13
    公开日:2002-06-22
    发明作者:박경혁
    申请人:이계안；현대자동차주식회사；
    IPC主号:
    专利说明:

    A starter motor driving circuit for an idle stop system
    [8] The present invention relates to a start motor driving circuit for an idling stop system, and more particularly, to a start motor driving circuit used when the idling stop system stops the engine and then starts the engine again as the vehicle is kept idle for a long time. It is about.
    [9] In general, the vehicle is configured to drive the starter motor to start the engine by the driver operating the starter key to 'on' the magnetic relay of the starter motor. In other words, the engine of the vehicle continues to operate at idle until the ignition key is 'off'.
    [10] However, as described above, when the vehicle is stopped for a long time in a state in which the ignition key is not 'off', fuel consumption decreases as well as the emission of exhaust gas increases as the engine continues to idle.
    [11] Therefore, recently, an idling stop system has been developed which can improve fuel efficiency and reduce exhaust gas by automatically stopping the engine when the engine is kept idle for a long time.
    [12] The idle stop system is a state in which the electronic control unit stops the engine based on factors such as battery voltage, coolant temperature, brake negative pressure, brake operating state, clutch operating state and vehicle speed, and stops the engine as described above. The electronic control unit will start the engine again based on factors such as battery voltage, coolant temperature, brake negative pressure and clutch operation.
    [13] At this time, the starting motor driving circuit according to the prior art used to start the engine as described above comprises an electronic control unit (1), a magnetic relay (3) and a starting motor (5) as shown in FIG. It is. At this time, although not shown in Figure 1, when the driver operates the ignition key to start, the magnetic relay 3 is 'on' to supply the battery power (B +) to the starter motor (5) to start the engine have.
    [14] When the idling stop system stops the engine and then starts the engine again, the electronic control unit 1 turns on the magnetic relay 3 to turn on the battery power source B + through the magnetic relay 3. The engine is started by supplying to (5).
    [15] However, as shown in FIG. 2, the starter motor driving circuit as described above allows the instantaneous current flowing from the battery (not shown) to the starter motor 5 to increase rapidly at the moment of turning on the magnetic relay 3. As a result, the torque of the starting motor 5 increases rapidly at the moment of turning the magnetic relay 3 on, and there is a problem in that the engine swings.
    [16] Accordingly, the present invention has been made to solve the problems of the prior art as described above, the vehicle is supplied to the starting motor when the idling stop system stops the engine and then starts the engine again as the vehicle is kept in the idle state for a long time. By controlling the amount of current, the starter motor drive circuit for the idling stop system can not only prevent the battery current from being rapidly consumed at start-up but also gradually increase the torque of the starter motor, which can significantly reduce engine fluctuations at start-up The purpose is to provide.
    [17] The starting motor driving circuit for the idling stop system according to the present invention for using the above object, the magnetic relay for supplying / blocking the battery power to the starting motor, and the magnetic relay when the engine is restarted by the idling stop system In addition to the 'on' and characterized in that it comprises an electronic control unit for controlling the amount of current of the battery power supplied to the starting motor through the magnetic relay.
    [18] In addition, the electronic control unit is characterized by gradually increasing the amount of current supplied to the starting motor by switching the battery power supplied to the starting motor through the magnetic relay using a pulse width modulation signal.
    [1] 1 is a schematic circuit diagram of a starter motor driving circuit according to the prior art;
    [2] 2 is a graph showing the torque change of the starting motor when using the starting motor driving circuit according to the prior art,
    [3] 3 is a schematic circuit diagram of a starter motor driving circuit according to the present invention;
    [4] Figure 4 is a graph showing the torque change of the starting motor when using the starting motor drive circuit according to the present invention.
    [5] <Explanation of symbols for the main parts of the drawings>
    [6] 10: electronic control unit 20: magnetic relay
    [7] 30: starting motor
    [19] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
    [20] 3 is a schematic circuit diagram of a starter motor driving circuit according to the present invention. The starter motor driving circuit according to the present invention includes an electronic control unit 10, a magnetic relay 30, and a starter motor 50. have. At this time, although not shown in Figure 3, when the driver operates the ignition key to start, the magnetic relay 30 is 'on' to supply the battery power (B +) to the starter motor (50).
    [21] The electronic control unit 10 is supplied to the starting motor 50 through the magnetic relay 30 as well as 'turning on' the magnetic relay 30 when the engine is restarted by an idle stop system (not shown). The amount of current supplied to the starting motor 50 is gradually increased by switching the battery power using a pulse width modulation signal. Here, since the control of the amount of current using the pulse width modulated signal is a common technique for those skilled in the art, detailed description thereof will be omitted.
    [22] The operation and effects of the starting motor driving circuit for the idling stop system according to the present invention configured as described above will be described with reference to FIG.
    [23] The electronic control unit of the idle stop system (not shown) stops the engine based on factors such as battery voltage, coolant temperature, brake underpressure, brake operating condition, clutch operating condition, vehicle speed, and the like. At this time, the electronic control unit stops fuel injection / ignition.
    [24] In addition, the electronic control unit starts the engine again on the basis of factors such as battery voltage, coolant temperature, brake negative pressure amount, operating state of the clutch and the like in the state of stopping the engine as described above.
    [25] At this time, when the engine is started as described above, the electronic control unit 10 turns on the magnetic relay 30 and simultaneously modulates the pulse power of the battery power supplied to the starting motor 50 through the magnetic relay 30. By switching using the signal, the amount of current supplied to the starting motor 50 is gradually increased.
    [26] Therefore, as shown in FIG. 4, when the magnetic relay 30 is 'on', the amount of current supplied to the starting motor 50 through the magnetic relay 30 is gradually increased, so that the starting motor 50 The torque will increase slowly.
    [27] In addition, as described above, when the engine speed reaches a predetermined speed by starting the engine, the electronic control unit 10 again controls fuel injection / ignition to maintain the engine in a driving state and stops the starting motor 50.
    [28] As described above, according to the present invention, as the vehicle is kept in the idle state for a long time, the idle current is controlled by controlling the amount of current supplied to the starting motor when the engine stops and then starts the engine again. Not only can it be prevented from being suddenly consumed, but the torque of the starting motor is gradually increased, which can significantly reduce engine fluctuations at the start.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] Magnetic relay for supplying / blocking battery power to the starting motor, and turning on the magnetic relay when the engine is restarted by the idling stop system, and the amount of current of the battery power supplied to the starting motor through the magnetic relay. A starting motor drive circuit for an idling stop system, comprising an electronic control unit for controlling.
    [2" claim-type="Currently amended] The method of claim 1,
    The electronic control unit, the starting motor drive circuit for idle stop system, characterized in that to gradually increase the amount of current supplied to the starting motor by switching the battery power supplied to the starting motor through the magnetic relay using a pulse width modulation signal. .
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-12-13|Application filed by 이계안, 현대자동차주식회사
    2000-12-13|Priority to KR1020000076041A
    2002-06-22|Publication of KR20020047558A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020000076041A|KR20020047558A|2000-12-13|2000-12-13|A starter motor driving circuit for an idle stop system|
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