JP2935144B2 - Power generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generator for generating power by the combustion energy of fuel, and more particularly to a power generator for a large vehicle engine.

[0002]

2. Description of the Related Art A so-called alternator, which is driven by an engine torque and generates electric power, is conventionally used as a power generating device for a vehicle, and the generated output is stored in a battery to supply power to various electric devices mounted on the vehicle. .

On the other hand, a turbocharger for recovering exhaust energy and increasing a supercharging pressure to an engine is widely used, and a rotating electric machine (TC) is mounted on a rotating shaft of the turbocharger.
G) is mounted, and various attempts have been made to electrically or electrically generate the rotating electric machine according to the operating state of the engine.

[0004]

By the way, large engines are mainly used for trucks. However, due to the increase in equipment driven by electric energy, there is a problem that electric power from the alternator cannot be used at present. In addition, in an engine equipped with the turbocharger with a rotating electric machine described above, if the assisting of the supercharging operation by the electric driven rotating electric machine continues on a long uphill road, etc. There is a drawback that no pressure can be obtained and the climbing power is insufficient.

[0005] The present invention has been made in view of such a problem, and an object of the present invention is to provide a power generator capable of supplementing the power demand of a vehicle having a large engine.

[0006]

According to the present invention, there is provided a toothed ring having a plurality of convex teeth made of a magnetic material provided on an outer periphery of a flywheel of an engine. A permanent magnet which is disposed close to the toothed ring and has magnetic poles corresponding to the convex teeth; a magnetic field having a power generating coil wound between the magnetic poles and changing magnetic flux passing through the power generating coil by electric power from a battery A stator having a control coil, a conversion mechanism for converting the output of a power generating coil for generating power by magnetic change caused by movement of the convex teeth based on the rotation of the flywheel for charging a battery, and adhering near the toothed ring A power generating device comprising: an iron powder removing mechanism that removes iron powder that is generated.

[0007]

Next, an embodiment of the present invention will be described.

FIG. 1 is a block diagram showing the configuration of an embodiment of the power generating apparatus according to the present invention.

In FIG. 1, reference numeral 1 denotes a flywheel attached to a large engine (not shown), which is supported by a crankshaft 11. The flywheel 1 has a toothed surface made of laminated silicon steel plates on its outer peripheral edge. A ring 2 is attached all around. The toothed ring 2 is formed by connecting a plurality of leaf plates each having convex teeth formed at equal intervals on each other and connecting them, and a ring formed on the ring body is fixed by welding or the like.

Reference numeral 3 denotes a stator which is fixed to the inner wall of the flywheel housing and corresponds to the toothed ring 2, and has a yoke 31, a permanent magnet 32, a power generation coil 33, a magnetic field control coil 34, and the like. Permanent magnets 32 are attached to the inner surface of the yoke 31 of the ring at the same pitch as the convex teeth of the toothed ring 2, and the magnets are magnetized so as to generate a strong magnetic flux in the radial direction. It is oriented in the opposite direction to the adjacent permanent magnet. Note that N,
S indicates the magnetic polarity of the magnet, and the curve of the arrow indicates the direction of the line of magnetic force.

The power generation coil 33 and the magnetic field control coil 34
Are wound around the yoke 31 between the permanent magnets 32, respectively, are connected in series for every predetermined number of coils, and lead wires are drawn out. The lead wire from the power generation coil 33 is supplied to the regulator 4 and the magnetic field control coil 34. Are connected to the magnetization controller 5, respectively.

Reference numeral 21 denotes an iron powder removing magnet, which removes iron powder since there is a large amount of iron powder due to the presence of a clutch mechanism near the flywheel. As shown in A, it is attached with the convex teeth of the toothed ring 2 interposed therebetween.

The regulator 4 converts AC power generated by the rotation of the toothed ring 2 from the power generating coil 33 into charging power for the battery 6, and includes, for example, a rectifier circuit and a voltage control circuit. The DC power converted to a predetermined voltage according to the command is supplied to the battery 6.

The magnetization controller 5 receives electric power from the battery 6 and supplies electricity to the magnetic field control coil 34 to control the magnetic flux of the power generation coil 33 generated by the rotation of the toothed ring 2. It is implemented by.

Reference numeral 7 denotes a turbocharger, which includes a turbine 71 driven by the exhaust energy of the engine, a compressor 72 driven to rotate by the turbine torque to pump the supercharged air to the engine, and further has an electric motor on the rotating shaft. -A rotating electrical machine (TCG) 73 serving as a generator is mounted.

When the engine is running at a low speed and under a high load, such as when the vehicle is climbing a hill, the compressor 7 is driven by the turbine torque.
2 does not reach the boost pressure corresponding to the high load, the AC power from the inverter 8 using the battery 6 as the power supply is supplied to the rotating electric machine 7 to perform the electric drive, and the torque of the electric operation of the compressor 72 is used. To boost the boost pressure and increase the boost pressure to the engine.

The controller 9 is composed of a microcomputer and includes a CPU for performing arithmetic processing, various memories for storing arithmetic processing procedures and control procedures, input / output ports, and the like. When a value such as pressure is input, an appropriate command is issued to each of the regulator 4, the magnetization controller 5, and the inverter 8.

Next, the operation of the embodiment constructed as described above will be described.

When the engine is operated, the flywheel 1 is driven in accordance with the rotation of the crankshaft corresponding to the vertical movement of the piston.
Is driven, the toothed ring 2
Are also driven to rotate, and the convex teeth provided on the outer periphery thereof sequentially move near the magnetic poles of the stator 3. Therefore, the magnetic flux in the crankshaft direction from the magnetic pole of the permanent magnet 32 to the magnetic pole of the adjacent permanent magnet, when the position of the magnetic pole coincides with the convex tooth of the toothed ring, the magnetic resistance decreases and the magnetic flux passing through the inside of the yoke 31 When the number increases and the position of the magnetic pole of the permanent magnet coincides with the position of the concave portion between the convex teeth, the magnetic resistance increases and the number of magnetic fluxes in the yoke decreases. Then, an electromotive force is generated in the wound power generating coil 33 in accordance with such a change in the magnetic flux, and the electromotive force is connected in series to generate an alternating current having a multiple voltage, which is transmitted to the regulator 4.

In the regulator 4 to which the alternating current is supplied, after being rectified by a command from the controller 9, the rectified DC power is converted into DC power of a predetermined voltage, the battery 6 is energized, and the battery is charged.

In this case, for example, when the vehicle is traveling on a long uphill road and the battery 6 is used as a power source to electrically drive the rotating electric machine 73 via the inverter 8 to assist the supercharging operation,
The DC output from the regulator 4 is supplied to the inverter 8 together with the electric power from the battery 6, so that the driving electric power of the rotating electric machine 73 is increased and the electric power is continued until the electric motor reaches a long hill.

When the power output from the power generation coil 33 is used for driving the rotating electric machine 73, the controller 9 issues a command to the magnetization controller 5 and the magnetic field control coil 3
The energization control of 4 is performed to increase the magnetic flux density, and the power generation efficiency of the power generation coil 33 is increased.

On the other hand, in the case where the power generation mechanism is provided in the flywheel housing as in this embodiment, since the friction clutch and the like are close to each other, iron powder is scattered due to the friction of the clutch, and the iron powder is scattered in the magnetic circuit. The function may be deteriorated due to adhesion. Therefore, in the present embodiment, the iron powder removing magnet 21 is attached to a predetermined location near the toothed ring or the like, and the iron powder is attracted to this magnet to prevent the magnet powder from adhering to the magnetic circuit. In addition,
Instead of the iron powder removing magnet, a coil may be wound around a U-shaped iron core, and when the engine is idling, electricity may be supplied from the battery 6 to adsorb and remove the iron powder.

Although the present invention has been described with reference to the above-described embodiment, within the scope of the present invention, for example, in this embodiment, the stator provided outside the toothed ring is arranged on the side of the toothed ring. Various modifications and applications are possible such that the magnetic poles are formed by magnetizing the convex teeth of the toothed yoke made of a magnet material instead of the individual permanent magnets described above,
These modifications and applications are not excluded from the scope of the present invention.

[0025]

As described in the above embodiment, according to the present invention, the power output of the alternator is generated by a power generation mechanism such as a toothed ring provided on the outer periphery of the flywheel of a large engine or a corresponding power generation coil. Because it was configured to compensate, a large flywheel with a high peripheral speed even at idling provides sufficient power output from the power generating coil,
The effect of being able to cover the power demand of the auxiliary equipment mounted on the vehicle, which has been short of hitherto, can be obtained.

Further, according to the present invention, since the power generating mechanism is a contactless AC machine, its reliability is high, and the power generating mechanism can be installed without requiring a large space for mounting.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram showing an embodiment of a power generation device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Flywheel 2 ... Toothed ring 3 ... Stator 4 ... Regulator 5 ... Magnetization controller 6 ... Battery 7 ... Turbocharger 9 ... Controller 21 ... Iron powder removal magnet 32 ... Permanent magnet 33 ... Power generation coil 34 ... Magnetic field control coil

Claims (1)

(57) [Claims] 1. A toothed ring having a plurality of convex teeth made of a magnetic material and provided on an outer periphery of a flywheel of an engine, and a permanent magnet having a magnetic pole disposed in close proximity to the toothed ring and corresponding to the convex teeth. A stator having a power generation coil wound between the magnetic poles, and a magnetic field control coil for changing magnetic flux passing through the power generation coil by electric power from a battery; and moving a convex tooth based on rotation of the flywheel. A power conversion coil that converts the output of a power generation coil that generates power by the generated magnetic change into a battery charge, and an iron powder removal mechanism that removes iron powder adhering near the toothed ring. apparatus.