KR20030055579A - a device and method for a variable generator in diameter - Google Patents

Abstract

PURPOSE: An apparatus and a method are provided to vary the rotational frequency of the AC generator per unit rotation of an engine by varying the diameter of the generator pulley in cases where the vehicle battery voltage is lowered to the level lower than a predetermined level. CONSTITUTION: An apparatus comprises a vehicle operating state detection unit(100) for detecting a vehicle operating state; an engine control unit(200) for receiving an engine RPM and a battery voltage detected by the vehicle operating state detection unit, outputting a hydraulic pressure release control signal if the battery voltage is lower than the predetermined first preset value, outputting a hydraulic pressure supply cut control signal if the battery voltage is higher than the first preset value and lower than the second preset value, and outputting a hydraulic pressure supply control signal if the battery voltage is higher than the second preset value; and a driving unit(300) for discharging the oil stored in an oil pan, supplying the discharged oil and re-discharging the supplied oil to the oil pan, by being synchronized with the control signal output from the engine control unit.

Description

A variable diameter alternating current generation control device and a method therefor {a device and method for a variable generator in diameter}

The present invention relates to a variable alternator, and more particularly, a variable diameter alternating current generation control device capable of varying the number of revolutions of an alternator per unit revolution of an engine by varying the pulley diameter of the alternator according to a voltage state of a battery. And to a method thereof.

There are many electric devices such as lamps, air conditioners, as well as electric starting devices for engines or ignition devices, and batteries and generators as power sources for supplying these electric devices.

As shown in FIG. 5, the generator 1 is driven by a belt 4 connected to the engine 2 and the air conditioner compressor 3, and the amount of power generation varies depending on the number of revolutions of the engine, and the amount of load of the power generation amount. If less, the battery is powered and temporarily discharged.

In addition, when the amount of power generation is greater than the load amount, all the electric devices are supplied by the generator alone, and the battery is also charged by the generator.

In the vehicle equipped with the conventional generator, as the amount of electricity required in recent years increases, the battery has a problem of a complete discharge phenomenon due to the lack of power generation when the engine idling, there is a problem to solve the above problems When it is determined that the battery voltage falls below a predetermined value, the engine idle speed is increased to increase the amount of power generated.

However, the above-described conventional method has a problem in that a side effect of deteriorating a noise level in an engine idle state occurs, and particularly, when a booming is increased, a serious rejection is given to the driver.

Accordingly, an object of the present invention is to solve the above problems, and when the vehicle battery voltage is lowered below a predetermined voltage, the alternator pulley diameter may be varied to change the rotation speed of the alternator per unit revolution of the engine. The present invention provides a variable diameter alternating current power generation control device and method thereof.

The present invention for achieving the above object,

Vehicle operating state detection means for detecting a vehicle operating state that varies according to a change in the operating state of the vehicle;

In response to the engine speed and the battery voltage detected by the vehicle operating state detecting means being input, when the battery voltage is lower than or equal to a first predetermined value, an oil pressure release control signal is output. An engine control means for outputting a hydraulic pressure supply cutoff control signal if it is determined to be within a range smaller than the value, and outputting a hydraulic pressure supply control signal if the battery voltage is greater than a second set value;

In synchronism with the control signal output from the engine control means, the driving means is driven to discharge the oil stored in the oil pan to a predetermined pressure, supply the discharged oil and release the supplied oil to the oil pan. Characterized in that made.

Another invention for achieving the above object,

A battery 10; Engine control means (200) for determining a voltage state of the battery (10) and outputting a predetermined control signal; A driving means (300) driven in synchronization with a control signal output from the engine control means (200); A three-way valve 400 for discharging hydraulic pressure according to the driving state of the driving means 300 and supplying or returning the discharged hydraulic pressure; The pulley is variable according to the hydraulic pressure discharged or discharged through the three-way valve 400 is characterized in that it is provided with a variable alternating current power pulley (500) having a variable rotation speed.

Another invention for achieving the above object is,

Initializing all variables used when power is applied, and determining a detected battery voltage when it is determined that startup is completed;

And outputting hydraulic supply and discharge control signals according to the battery voltage determined in the step.

1 is a block diagram of the configuration of a variable-current AC power generation controller according to the present invention,

2 is a flow chart of a variable diameter alternating current generation control room applied to the present invention,

3 is a structural diagram of a variable diameter alternating current generator applied to the present invention,

4 is a schematic structural diagram of an engine having a variable diameter alternating current generator according to the present invention;

5 is an engine structure diagram provided with a conventional AC generator.

<Description of Symbols for Main Parts of Drawings>

10: battery 100: vehicle operation state detection means

110: engine speed detection unit 120: battery voltage detection unit

200: engine control means 300: driving means

310: first driving unit 320: second driving unit

400: 3-way valve 410: oil pan

420: first euro 430: second euro

440: third euro 450: fourth euro

500: variable AC power generation means

510, 540: expansion member 501 ': piston

520: inner space 520 ': cylinder

530: spring 600: crank pulley

700: air conditioner compressor pulley 800: belt

900: Auto Tension

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a configuration of a variable AC power generation control device according to the present invention, and the vehicle operating state detecting apparatus 100 detects a vehicle operating state that varies according to a change in an operating state of a vehicle.

The engine control device 200 receives the engine speed and the battery voltage detected by the vehicle operating state detection device 100, and outputs a hydraulic release control signal when the battery voltage is less than or equal to a predetermined first set value, and the battery voltage. When it is determined to be included in the range larger than the first set value and smaller than the second set value, the hydraulic supply cutoff control signal is output. When the battery voltage is greater than the second set value, the hydraulic supply control signal is output.

The driving device 300 discharges the oil stored in the oil pan at a predetermined pressure in synchronization with a control signal output from the engine control device 200, supplies the discharged oil and supplies the supplied oil to the oil pan. It works to release it again.

The vehicle operating state detecting apparatus 100 includes an engine speed detecting unit 110 for detecting a change in engine speed that varies according to a change in an operating state of an engine;

The battery voltage detector 120 detects a voltage of the battery 10.

The driving device 300 includes an oil pump 310 for discharging oil stored at a predetermined position in synchronization with a control signal output from the engine control device 200;

A solenoid valve 320 whose position is changed in synchronization with a control signal output from the engine control device 200 is provided.

3 is a configuration diagram of a variable AC power generator according to the present invention, including a battery 10; An engine control apparatus 200 which determines a voltage state of the battery 10 and outputs a predetermined control signal; An oil pump 310 for discharging oil having a predetermined pressure in synchronization with a control signal output from the engine control apparatus 200; A solenoid valve 320 which is variable in position in synchronization with a control signal output from the engine control apparatus 200; A three-way valve 400 that is directly connected to the solenoid valve 320 and whose position is changed according to the variable state of the solenoid valve 320; A variable alternating current generation device (500) in which a shape of the pulley is changed by oil having a predetermined pressure supplied and released through the three-way valve (400) to vary the amount of power generated; An oil pan 410 storing oil discharged from the oil pump 310; A first flow path 420 provided between the oil pan 410 and the oil pump 310 to move oil; A second flow path 430 provided between the oil pump 310 and the three-way valve 400 to move oil; A third flow path 440 provided between the three-way valve 400 and the variable AC generator 500 to supply or release oil; A fourth flow path 450 is provided between the three-way valve 400 and the oil pan 410 to return oil released from the variable AC power generator 500 to the oil pan 410.

In the variable AC power generation apparatus 500, a predetermined space 520 is formed around an inner circumferential surface, and an expansion member whose outer circumferential surface diameter increases and decreases as oil is supplied and released with a predetermined pressure into the space 520. A plurality of 510s are provided symmetrically.

One end of the expansion member 510 is provided with a piston 510 'in the space inward direction to directly receive the pressure of oil supplied and released, and forms a cylinder 520' recessed in the space 520 outward direction. Housed inside

In addition, the piston 510 'is supported by a spring 530 having a predetermined elastic force to be accommodated in the cylinder 520' and returned by the elastic force.

4 is a simplified structural diagram of an engine having a variable diameter AC generator according to the present invention, the variable AC generator 500 having a variable diameter of a pulley according to a battery voltage state; A crank pulley 600 whose rotation speed is variable according to the operating state of the engine; An air conditioner compressor pulley 700 provided in the air conditioner compressor for circulating a refrigerant when the air conditioner is operated; A belt 800 provided to rotate the variable AC generator 500 and the air conditioner compressor pulley 700 according to the rotation state of the crank pulley 600; The variable AC power generator 500 is provided with an auto-tension 900 for adjusting the tension of the belt 800 according to the variable state of the pulley.

A control method of the variable AC generator having the above-described configuration will be described with reference to FIG. 2.

When the driver applies power to the vehicle, the engine control apparatus 200 initializes all the variables used (S100).

The vehicle operating state detecting apparatus 100 detects an engine speed and a battery voltage which vary according to a change in an operating state of the vehicle.

Accordingly, when the engine control apparatus 200 outputs a predetermined control signal to receive the engine speed and battery voltage detected by the vehicle operating state detecting apparatus 100, the vehicle operating state detecting apparatus 100 is the engine control apparatus. The engine speed and the battery voltage detected in synchronization with the control signal applied at 200 are output.

The engine control apparatus 200 receives an engine speed and a battery voltage output from the vehicle operation state detecting apparatus 100, and first, determines whether the engine speed reaches a predetermined value (about 800 rpm) (S110). .

That is, when it is determined in the above that the engine speed reaches a predetermined value, the engine control apparatus 200 determines that the engine start is completed, and the detected voltage of the battery 10 shown in FIG. It is determined whether the set reference value or less (S120).

That is, when oil is supplied to the variable alternating current generation apparatus 500, in the state where the expansion member position is located at the position of the expansion member 540 of the dotted line, the detected voltage of the battery 10 reaches a discharge state almost. When determined to be equal to or less than the first predetermined reference value, the engine control apparatus 200 reduces the pulley of the variable alternating current generator 500 to the position of the expansion member 510 of the solid line shown in FIG. In order to increase the power generated by increasing the number of revolutions of the pulley pulley outputs a hydraulic release control signal to the drive device (300) (S130).

As shown in FIG. 3, when the hydraulic release control signal output from the engine control device 200 is output, oil supplied to a predetermined space formed around an inner circumferential surface of the variable AC power generator 500 is oil pan. The solenoid valve 320, which is the second driving unit, is variably operated so as to return to 410.

As the solenoid valve 320 which is the second driving unit is variably operated, the position of the three-way valve 400 directly connected to the solenoid valve 320 is changed to an oil release position.

As the position of the three-way valve 400 is changed to the oil release position, the oil supplied to the predetermined space of the variable alternating current generator 500 is configured to discharge the third flow path 440 and the discharge position of the three-way valve 400. Through the fourth flow path 450 is released to the oil pan (410).

Accordingly, the diameter of the variable AC power generator pulley 500, the diameter of which is expanded by the plurality of dotted line expansion members 540, is returned to the inside of the space 520 by the elastic force of the spring supporting the piston 510 ′. By being reduced like the expansion member 510, the rotation speed of the variable power generator pulley 500 per engine unit rotation is increased to increase the amount of power generated.

Subsequently, as the number of rotations of the variable alternating current generator 500 increases, the amount of power generated increases, and thus the electric power of the vehicle is smoothly supplied and the remaining power is charged in the battery 10.

Therefore, the engine control apparatus 200 continuously detects the state of the voltage of the battery 10 and determines whether the voltage of the battery 10 is within a range larger than the first set reference value and smaller than the second set reference value. (S140).

When it is determined that the detected voltage of the battery 10 is within a range larger than the first set reference value and smaller than the second set reference value, the engine control apparatus 200 maintains the diameter of the variable AC power generator 500 pulley. In order to prevent the oil from being released or supplied, a predetermined control signal is output to the solenoid valve 320 which is the second driving unit of the driving device 300 (S150).

The solenoid valve 320, which is the second driving unit of the driving device 300, has a variable position in synchronization with a control signal output from the engine control device 200, and is a three-way valve directly connected to the solenoid valve 320. The position of the 400 is changed from the oil release position to the oil release and supply cutoff positions, thereby preventing oil from being released from the predetermined space 520 of the variable alternating current generator pulley 500 to the oil pan 410.

At this time, as the pulley of the variable AC generator 500 is reduced, the variable AC generator pulley 500, the crank pulley 600 and the air conditioner compressor pulley 700 as shown in FIG. In order to prevent the belt 800 that is connected and rotated from being loosened, the position of the auto tension 900 provided at a predetermined position of the engine is changed to prevent the belt 800 from being loosened by adjusting the tension of the belt 800.

Subsequently, the engine control device 200 maintains the reduced state of the variable AC generator pulley 500 and increases the amount of power generated, and then continuously determines the state of charge of the battery 10, but the battery 10 In step S160, it is determined whether the charging voltage exceeds the second set reference value.

When it is determined that the voltage charging state of the battery 10 does not exceed the second setting reference value, the engine control apparatus 200 may determine until the charging voltage of the battery 10 reaches the second setting reference value. Maintains a state (S150) for blocking the hydraulic supply and release state.

However, when it is determined that the voltage charging state of the battery 10 exceeds the second set reference value, the engine control apparatus 200 supplies hydraulic pressure for controlling the amount of generation of the variable alternating current generator 500 to a normal state. The control signal is output to the driving means 300 (S170).

The oil pump 310, which is the first driving unit of the driving unit 300, sucks oil stored in the oil pan 410 through the first flow path 420 in synchronization with a control signal output from the engine control apparatus 200. Thereafter, the discharge is performed at a predetermined pressure through the second flow path 430.

In addition, the solenoid valve 320 as the second driving unit removes the oil discharged through the second flow path 430 in the position of the three-way valve 400 in synchronization with the control signal output from the engine control apparatus 200. Variable to be applied to the three flow paths (440).

The oil having a predetermined pressure applied to the third flow path 440 is supplied to a predetermined space 520 formed inside the variable AC power generator 500.

The oil supplied to the predetermined space 520 formed inside the variable AC power generator 500 acts directly on the piston 510 at a predetermined pressure to expand the solid member expansion member 510 in the dotted line. The diameter of the pulley of the variable alternator 500 is expanded.

As the diameter of the variable AC generator 500 pulley is enlarged, the rotational speed of the variable AC generator pulley 500 which is connected and rotated by the crank pulley 600 and the belt 800 is reduced, so that the amount of power generated in the normal power generation state. Is reduced.

Thus, by varying the position of the variable AC generator pulley in accordance with the state of charge of the battery, by increasing the amount of power generated and maintaining the normal state, it is possible to cope with the consumption of the vehicle electric equipment, thereby stabilizing the vehicle state. .

As described above, according to the present invention, when the vehicle battery voltage is lowered to a predetermined voltage or less, the alternating current of the alternator pulley can be varied so that the rotation speed of the alternator per unit revolution of the engine can be varied. The battery can be discharged without any change.

Claims (11)

Vehicle operating state detection means for detecting a vehicle operating state that varies according to a change in the operating state of the vehicle; In response to the engine speed and the battery voltage detected by the vehicle operating state detecting means being input, when the battery voltage is lower than or equal to a first predetermined value, an oil pressure release control signal is output. An engine control means for outputting a hydraulic pressure supply cutoff control signal if it is determined to be within a range smaller than the value, and outputting a hydraulic pressure supply control signal if the battery voltage is greater than a second set value; Drive means driven to discharge the oil stored in the oil pan to a predetermined pressure in synchronization with a control signal output from the engine control means, to supply the discharged oil and to discharge the supplied oil back to the oil pan. A variable diameter alternating current generation control device, characterized in that consisting of. 2. The vehicle operating state detecting means according to claim 1, further comprising: an engine speed detecting unit for detecting a change in engine speed which is varied in accordance with a change in operating state of the engine; A variable diameter alternating current generation control device comprising a battery voltage detection unit (120) for detecting a voltage of a battery. The driving apparatus of claim 1, wherein the driving unit comprises: a first driving unit configured to discharge oil stored at a predetermined position in synchronization with a control signal output from the engine control unit; And a second drive unit whose position is changed in synchronization with a control signal output from the engine control means. A battery; Engine control means for determining a voltage state of the battery and outputting a predetermined control signal; An oil pump for discharging oil having a predetermined pressure in synchronization with a control signal output from the engine control means; A solenoid valve which varies in position in synchronization with a control signal output from the engine control means; A three-way valve directly connected to the solenoid valve, the position of the solenoid valve being varied according to a variable state of the solenoid valve; Variable alternating current generation means in which a shape of the pulley is changed by oil having a predetermined pressure supplied and released through the three-way valve, and a power generation amount is varied; An oil pan storing oil discharged from the oil pump; A first flow path provided between the oil pan and the oil pump to move oil; A second flow path provided between the oil pump and the three-way valve to move oil; A third flow path provided between the three-way valve and the variable alternating current generating means to supply or release oil; And a fourth flow path provided between the three-way valve and the oil pan to return oil released from the variable alternating current generating means to the oil pan. 5. The variable alternating current generating means according to claim 4, wherein a predetermined space is formed around the inner circumferential surface, and an expansion member is provided in which the outer circumferential diameter increases and decreases as oil is supplied and released from the space having a predetermined pressure. Variable flow power generating device including. 6. The variable diameter alternating current generation device according to claim 5, wherein one end of the expansion member is provided with a piston in a space inward direction to directly receive pressure of oil supplied and released. The alternating current alternating current generation device according to claim 6, wherein the piston includes a cylinder which is internally recessed in a space outward direction and is received therein. 8. The apparatus of claim 7, wherein the piston is supported by a spring having a predetermined elastic force to be received in the cylinder and returned by the elastic force. 6. The variable diameter alternating current generation device according to claim 5, wherein the expansion member is formed in symmetrical number. Initializing all variables used when power is applied, and determining a detected battery voltage when it is determined that startup is completed; A variable diameter alternating current generation control method comprising the step of outputting a hydraulic supply and discharge control signal in accordance with the battery voltage determined in the step 12. The method of claim 10, further comprising: outputting a hydraulic release control signal when the detected battery voltage is less than or equal to the first set value; Outputting a hydraulic supply and release cutoff control signal when the battery voltage detected in the step is larger than the first set value and smaller than the second set value; And outputting a hydraulic pressure supply control signal when the battery voltage detected in the step is greater than the second set value.