KR20060010360A - A super charger device - Google Patents

Abstract

The present invention relates to a supercharger device capable of rotating a fan by using a brushless DC motor of an internal combustion engine driven by a driver's operation by receiving a battery.

As a typical supercharger of the related art, as shown in FIG. 1, the motor 14 for rotating the fan is installed outside and the air inlet 16 and the vaporizer 72 in which the air of the air cleaner 71 is sucked. The air passage of the discharge port 18 to be discharged is formed in an L shape. This may cause various problems due to the motor 14 is heated to a high temperature when used for a long time, and the air flow is not made smoothly by bending the L-shape.

In order to solve the above problems, the fan 30, 30 'of the brushless DC motor 28 and the air passage 24 of the compressor case 21 are installed in a straight line so that the fan 30, 30 By using the flow of air sucked by ') to improve the cooling efficiency of the heat generated from the brushless DC motor 28 and the controller 35, the rotational speed of the engine and the control amount of the throttle valve (73) It is an object of the present invention to provide a super device using a brushless DC motor 28 that can adjust the optimum amount of intake air corresponding to the present invention and can sufficiently supercharge even in a low speed region.

Supercharger, diffuser, motor fixed housing, controller.

Description

Super Charger {A SUPER CHARGER DEVICE}

1 is a perspective view of a conventional product

2 is an installation diagram of the present invention

3 is a perspective view of the present invention

4 is a cross-sectional view and a circuit diagram of an important part of the present invention;

5 is a perspective view of an important part of the present invention;

Figure 6 is an operation cross-sectional view of the important part of the present invention

Explanation of symbols for main parts of the drawings

10: conventional supercharger

12: scroll

14: motor

16: suction port

18 outlet

20: supercharger

21: compressor case

22: diffuse

23: motor fixed housing

24: air passage

25: cover

26: Bearing

27: compression adjustment ring

28: Brushless DC Motor

29: motor shaft

30,30 ': fan

35 controller

36: controller case

40: speed detection unit

42: protection device

44: drive unit

46: operation display unit

48: arithmetic processing unit

50: inverter unit

60: differential coil sensor

61: detection rod

62: sensor fixing bracket

63: sensing rod holder

64: accelerator cable

65: baseline

66: output signal converter

66-1: Primary female coil

66-2: secondary induction coil

71: AIR CLEANER

72: carburetor

73: throttle valve

74: accelerator cable

75: ACCELERATOR PEDAL

The present invention relates to a supercharger device capable of rotating a fan by using a brushless DC motor of an internal combustion engine driven by a driver's operation, powered by a battery, and more particularly, a compressor case formed in a straight line. Brushless DC motors are installed in the center of air passages to improve cooling efficiency of brushless DC motors (BL DC motors), and fans are installed in two stages to improve the suction power of external air, resulting in eddy currents. The sensing rod is fixed to the accelerator cable, and when the accelerator pedal is pressed, the sensing rod is moved by the output signal which is increased or decreased according to the distance traveled by the primary excitation coil and the secondary induction coil. It can be rotated.

SUPER CHARGER, also called supercharger, is installed between the air cleaner and carburetor to increase the output of the internal combustion engine and supplies a large amount of intake air to the cylinder. In most internal combustion engines, the amount of fuel that can be burned in a cylinder is determined by the amount of air drawn in. It is well known that if more mixed air is charged into the cylinder, it can generate 30-50% more power at the same speed. In addition, air supercharging is performed by a supercharger or turbocharger. The supercharger mechanically rotates the intake air compression turbine connected to the crankshaft of the internal combustion engine and the pulley belt, so it consumes power even when the internal combustion engine is idling. This results in high fuel consumption, difficult installation of the equipment, short lifespan and high cost of the power train. The turbocharger is a structure that rotates the turbine for intake air compression by the exhaust gas, and the engine's rotation speed is not effective at 50% or less of the maximum rotation speed. The turbocharger is exposed to the high temperature exhaust gas. The engine's life is shortened due to the idling ready state at start and stop, and the engine's life is shortened due to the failure of exhaust gas in case of failure, soot smoke and fuel consumption are increased. In addition, there is a disadvantage that the installation of the mechanism is complicated and the product cost and the attachment cost are high.

In order to solve the problems of the supercharger and the turbocharger, a method of installing an electric motor and driving the blower with power is used. This method has the advantage of being easy to install, but the low speed of the motor makes the response speed to the engine speed fluctuating slow. When the engine is rotating at high speeds, the air volume is insufficient and the bypass path is inevitable. It is difficult to synchronize the speed of the blower, so the effectiveness as a supercharger is low.

As a typical supercharger of the related art, as shown in FIG. 1, the motor 14 for rotating the fan is installed outside and the air inlet 16 and the vaporizer 72 in which the air of the air cleaner 71 is sucked. The air passage of the discharge port 18 to be discharged is formed in an L shape. This may cause various problems due to the motor 14 is heated to a high temperature when used for a long time, and the air flow is not made smoothly by bending the L-shape.

Some other superchargers take the method of cooling by intake air, but the cooling efficiency is low, which leads to many difficult problems in continuous operation, and consumes power even when the internal combustion engine is idling. Many problems, such as many, not easy to install, short life of the motor and requires a lot of maintenance costs.

In order to solve the above problems, the fan 30, 30 'of the brushless DC motor 28 and the air passage 24 of the compressor case 21 are installed in a straight line so that the fan 30, 30 By using the flow of air sucked by ') to improve the cooling efficiency of the heat generated from the brushless DC motor 28 and the controller 35, the rotational speed of the engine and the control amount of the throttle valve (73) It is an object of the present invention to provide a super device using a brushless DC motor 28 that can adjust the optimum amount of intake air corresponding to the present invention and can sufficiently supercharge even in a low speed region.

In order to achieve the above object, the present invention provides the compressor case 21 as a supercharger 20 using a brushless DC motor 28 of an internal combustion engine which is powered by a battery and an alternator and is driven by a driver's operation. A high speed brushless DC motor 28 was built into the inside, and a controller 35 for controlling the brushless DC motor 28 was fixed outside the compressor case 21.

The brushless DC motor 28 rotates the axial flow type two-stage fan to strongly suck outside air to generate vortices. At this time, the introduced air cools the heat generated by the brushless DC motor 28 and the controller 35, increases the flow rate when discharging the sucked air to the engine, and frees the gap while the brushless DC motor 28 is being driven. Several linear diffusers 22 serving as a function of preventing the occurrence or departure of the same are formed in the compressor case 21 at regular intervals. In addition, the controller 35 detects the rotational speed of the engine and the control amount of the throttle valve 73, converts the result into a signal, and transmits the result to the brushless DC motor 28 by the result received from the speed detecting unit. An arithmetic processing unit for outputting a signal to automatically control the rotational speed of the battery, a protection unit preventing a pulse output when a low voltage phenomenon occurs in the battery, an operation display unit for displaying the operating state of the system, and a signal output from the arithmetic processing unit and the inverter unit. As a result, the brushless DC motor 28 is driven.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

2 is an installation diagram of the present invention;

Between the air cleaner 71 and the carburetor 72, a supercharger 20 consisting of a compressor case 21, a brushless DC motor 28, and a controller case 36 is installed, and a throttle valve of the carburetor 72 is provided. 73) and an accelerator cable 74 connecting the accelerator pedal 75 to a sensing rod holder 63 and a sensing rod 61 for operating the brushless DC motor 28 of the supercharger 20 at high speed and low speed. And a differential coil sensor 60 composed of an output signal converter 66 composed of a primary excitation coil 66-1 and a secondary induction coil 66-2. The output signal of the output signal converter 66 is connected to the controller 35 of the controller case 36.

3 is a perspective view of the present invention;

Inside the compressor case 21, six diffusers 22 are formed radially for guiding the distribution of intake air evenly, thereby forming an air passage 24, and fixing the motor for fixing the brushless DC motor 28 at the center thereof. The housing 23 is formed to fix the cover 25 on both sides, and the fan shaft 30 and 30 'to the motor shaft 29, and the controller case 36 of the controller 35 to the outside of the compression case 21. ) Is fixed.

4 is a cross-sectional view of the present invention.

The brushless DC motor 28 is fixed to the motor fixing housing 23 so that the motor shaft 29 is supported by a bearing 26 fixed to the cover 25 and the motor shaft 29 has two stages to increase the compression ratio of air. The controller (30) fixed to the outside of the brushless DC motor (28) and the compressor case (21) by the air flowing through the air passages (24) between the diffusers (22). The heat generated in the can be cooled. A compression control ring 27 is inserted into an inner surface of the compressor case 21 in which the fans 30 and 30 'are positioned so that a gap between the inner surface of the compressor case 21 and the ends of the fans 30 and 30' is adjusted. It narrowed so that the compression rate of air could be improved. The controller 35, which is a circuit for controlling the brushless DC motor 28 shown in FIG. 4, includes a speed sensing unit 40, a protection unit 42, an operation display unit 46, an operation processing unit 48, and an inverter unit ( 50) and the drive section 44.

In the above, the speed detection unit 40 serves to detect and output the speed of the engine, and the protection unit 42 always checks the voltage so that a low voltage phenomenon of the battery does not affect other electric systems. To prevent the overcurrent is detected in the system and stops the driving of the supercharger (20). The operation display unit 46 displays an error of the system or the current voltage state to the user. The calculation processing unit 48 turns off the brushless DC motor 28 when the engine is idle, and receives the signal of the speed detecting unit 40 when the engine accelerates, so that the optimum air volume can be supplied according to the rotational speed and the fuel injection amount of the engine. The flow rate and flow rate are controlled by controlling the rotation speed of the brushless DC motor.

The inverter unit 50 and the drive unit 44 are installed to drive the brushless DC motor 28 by receiving the result of the control of the optimum state through a series of steps of each part as a signal.

5 is a perspective view of a differential coil sensor of the present invention;

A primary excitation coil is provided on a sensor rod bracket 62 in which a sensing rod 61 marked with a baseline 65 is bolted and a sensor rod bracket 62 is fixed to an engine by inserting a groove into an accelerator cable 74 and fixing it with a nut. (66-1) and the output signal converter 66 is wound around the secondary induction coil (66-2) to change the strength of the current by moving the sensing rod 61 in and out of the output signal converter 66 To make it work.

FIG. 6 is an operational cross section of FIG.

The brushless DC motor 28 remains off when the accelerator pedal 75 is not stepped on or when the engine is idle. Accordingly, unnecessary consumption of the battery is prevented and the reference line 65 of the sensing rod 61 is displayed on the end surface of the output signal converter 66 in order to accurately install. When the accelerator pedal 75 is pressed in the above state, the sensing rod holder 63 and the sensing rod 61 fixed to the accelerator cable 74 are also moved by moving the accelerator cable 74 in the dotted arrow direction of FIG. 6. Done. The sensing rod 61 enters into the output signal converter 66 fixed to the sensor fixing bracket 62. At this time, the increase output of the secondary induction coil 66-2 is controlled by the controller 35 of the controller case 36. At the same time, the brushless DC motor 28 is rotated, and when the accelerator pedal 75 is stepped lightly, the brushless DC motor 28 is rotated at a low speed, and when pressed deeply and hardly, the brushless DC motor 28 is rotated at a high speed. do.

Accordingly, the air charging amount is precisely adapted to the opening and closing width of the stroke valve 73. The present invention as described above can be changed without departing from the gist of the invention.

The supercharger 20 of the present invention is naturally brushless by the air sucked through the air cleaner by arranging the brushless DC motor and the outlet fan 30, 30 'inline in the compressor case 25. Since the DC motor and the controller 35 are cooled, it is possible to prevent overheating of the brushless DC motor 28 due to long time driving and to increase efficiency. In addition, the battery power can be used so that the operator can easily adjust the operation without affecting the internal combustion engine at all and the configuration is simple and does not require much installation space. In addition, since the controller 35 drives the fans 30, 30 'at a speed corresponding to the rotational speed of the engine and the opening and closing of the throttle valve 73, the response to the change of the rotational speed of the engine is excellent and there is always abundant amount of air. There is an effect that can provide.

Claims (2)

In the supercharger 20 using a brushless DC motor 28 of an internal combustion engine powered by a battery and an alternator and driven by a driver's operation, a plurality of diffusers 22 are provided inside the compressor case 21. The motor shaft 29 of the brushless DC motor 28 fixed radially to form the air passage 24 and the motor fixing housing 23 in the center thereof is supported by the bearing 26 of the cover 25. On the other hand, a pair of fans 30, 30 ′ are fixed to the end of the motor shaft 29, and the controller case 36 of the controller 35 is fixed to the outside of the compressor case 21 so that the differential coil sensor 60 and Supercharger characterized in that the connection can be operated. The method of claim 1 The differential coil sensor 60 fixes the sensing rod holder 63 of the sensing rod 61 to the accelerator cable 74, and the primary excitation coil 66-1 and the secondary induction coil () to the sensor fixing bracket 62. 66-2) Supercharger device characterized in that the fixed output signal converter 66 to change the induced current.

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