JP6335154B2 - Motor generator and electric vehicle - Google Patents

Description

  Embodiments described herein relate generally to an engine generator and an electric vehicle.

  2. Description of the Related Art Conventionally, an engine generator mounted under the floor of an electric powered vehicle (electric vehicle) includes a radiator (heat exchanger) through which a heat medium for cooling an internal combustion engine such as an engine flows, and a fan for cooling the radiator. And. The fan includes a blade and a motor that rotates the blade. The motor includes a housing that houses a rotor and a stator. The blade is attached to an output shaft protruding from the housing. The blades are provided at positions different from the housing in the axial direction of the rotation shaft of the motor. For this reason, a dead space is formed around the motor housing and the blades, and the motor generator may be increased in size.

  Conventionally, various devices such as equipment constituting a motor generator and a fuel tank have been mounted under the floor of an electric train. For this reason, when the power generation apparatus becomes large, the removal work of various apparatuses becomes complicated at the time of maintenance, and the maintainability may be deteriorated.

JP 2012-39745 A

  The problem to be solved by the present invention is to provide an engine generator and an electric vehicle capable of saving an occupied area.

  The motor generator according to the embodiment includes a frame, an internal combustion engine, a generator, a heat exchanger, and a plurality of fans. The frame is attached to an object to be attached. The internal combustion engine is suspended on the frame. The generator is suspended on the frame. The generator can generate electric power by the power of the internal combustion engine. The heat exchanger is suspended from the frame. A heat medium that cools the internal combustion engine flows through the heat exchanger. The fan has a motor and blades. The motor has an outer rotor. The blades are provided on the outer periphery of the outer rotor. The plurality of fans are arranged side by side along the main surface of the heat exchanger between the internal combustion engine and the heat exchanger.

The top view of the electric train of an embodiment. The perspective view of the fan of an embodiment. The side view of the fan unit and radiator of an embodiment.

  Hereinafter, an engine generator and an electric vehicle according to embodiments will be described with reference to the drawings.

  FIG. 1 is a plan view of an electric pneumatic vehicle according to an embodiment. In addition, in FIG. 1, the vehicle body 2 of the electric pneumatic vehicle 1 (electric vehicle) is indicated by a two-dot chain line. Further, the traveling direction of the electric pneumatic vehicle is referred to as a traveling direction X, the vehicle width direction of the electric pneumatic vehicle is referred to as a vehicle width direction Y, and the direction orthogonal to the traveling direction X and the vehicle width direction Y is referred to as a vertical direction.

  As shown in FIG. 1, the electric diesel vehicle 1 is installed in a region between a vehicle body 2 (an object to be attached), a pair of carriages 7 fixed to the lower part (under the floor) of the vehicle body 2, and the pair of carriages 7. The engine generator 3 and the fuel tank 5 are provided. The motor generator 3 and the fuel tank 5 are arranged side by side in the traveling direction X. The motor generator 3 is mounted so as to be offset outward from the center in the vehicle width direction Y. The motor generator 3 outputs electric power for driving the carriage 7.

The engine generator 3 includes a frame 10, an engine 20 (internal combustion engine), a generator 30, a radiator 40 (heat exchanger), and a fan unit 50.
The frame 10 is attached under the floor of the body 2 of the electric pneumatic vehicle. The frame 10 is made of a metal material such as iron. The frame 10 includes a frame main body 11 formed in a rectangular frame shape, and four attachment protrusions 12 provided at four corners of the frame main body 11. The attachment protrusion 12 protrudes in the vehicle width direction Y. The frame 10 is suspended under the floor of the vehicle body 2 by fixing the mounting protrusion 12 to the vehicle body 2.

  The engine 20 is a diesel engine, for example. The engine 20 is driven by the fuel supplied from the fuel tank 5 through a fuel hose (not shown). The engine 20 is suspended from the frame body 11 in the frame of the frame body 11 in plan view. The engine 20 is arranged such that the crankshaft is along the traveling direction X.

  An air filter 60 and a muffler 70 are attached to the engine 20. The air filter 60 is disposed outside the frame main body 11 in a plan view and inside the vehicle than the engine 20. The engine 20 takes in outside air through the air filter 60. The muffler 70 is disposed outside the frame body 11 in a plan view and on the opposite side of the fuel tank 5 in the traveling direction X with the engine 20 interposed therebetween. The engine 20 discharges exhaust gas through the muffler 70.

  The generator 30 is suspended from the frame 10 within the frame body 11 in plan view. The generator 30 is arranged side by side in the traveling direction X with respect to the engine 20 on the side opposite to the fuel tank 5 in the traveling direction X across the engine 20. The generator 30 is connected to the crankshaft of the engine 20 and can generate power using the power of the engine 20.

  The radiator 40 is suspended from the frame 10 outside the frame body 11 in plan view. The radiator 40 is disposed on the side opposite to the air filter 60 across the engine 20 so as to face the outside of the vehicle. The radiator 40 is formed in a rectangular plate shape, and is disposed such that a pair of main surfaces face the vehicle width direction Y. The radiator 40 can flow air in the vehicle width direction Y. A plurality of pipes are connected to the radiator 40. Cooling water (heat medium) for cooling the engine 20 flows through the radiator 40. The cooling water flowing through the radiator 40 is supplied to the water jacket of the engine 20 through piping, for example, by driving a water pump. The cooling water is exchanged with the engine 20 and then returned to the radiator 40 through piping. In addition, the radiator 40 may be provided independently and the form divided | segmented into plurality may be sufficient.

FIG. 2 is a perspective view of the fan according to the embodiment. FIG. 3 is a side view of the fan unit and the radiator as viewed from the inside of the vehicle. In FIG. 3, the radiator 40 is indicated by a two-dot chain line.
The fan unit 50 is disposed between the engine 20 and the radiator 40 and attached to the radiator 40. As shown in FIGS. 2 and 3, the fan unit 50 includes a plurality (12 in the illustrated example) of fans 51 and a frame member 57 that supports the plurality of fans 51. The fan 51 includes an outer rotor type motor 53 having an outer rotor, and a plurality of blades 55 provided on the outer periphery of the outer rotor. The outer rotor of the motor 53 and the blades 55 are provided at the same position in the axial direction of the rotation axis O of the motor 53. Each blade 55 extends radially from the rotation center of the motor 53.

  As shown in FIG. 3, the plurality of fans 51 are arranged side by side along the main surface 40a (see FIG. 1) of the radiator 40 on the engine 20 side. In the illustrated example, the plurality of fans 51 are arranged in two rows in the vertical direction, with six fans 51 arranged in the traveling direction X. The fan unit 50 is disposed so as to cover the main surface 40 a of the radiator 40. As shown in FIG. 1, the fans 51 are arranged at a predetermined distance from the radiator 40. A gap between the fan unit 50 and the radiator 40 is an airtight space. The fan 51 blows air along the vehicle width direction Y from the radiator 40 side toward the engine 20 side. The fan 51 draws the outside air from the outside of the vehicle toward the inside of the vehicle by passing the radiator 40 through a negative pressure in the gap between the fan unit 50 and the radiator 40.

According to the motor generator 3 according to the embodiment described above, the fan 51 has the motor 53 having the outer rotor and the plurality of blades 55 provided on the outer periphery of the outer rotor, and thus protrudes from the housing. As compared with a configuration using a conventional fan in which blades are provided on the output shaft, it is possible to suppress the formation of a dead space around the fan 51.
And since the motor generator 3 is provided with the several fan 51 arrange | positioned along with it, compared with the structure provided with a single fan, the motor of a fan can be reduced in size. Thereby, the dimension of the fan 51 in the axial direction of the rotating shaft O of the motor 53 is reduced.
Therefore, it is possible to save the space occupied by the motor generator 3 under the floor of the vehicle body 2.

Further, since the plurality of fans 51 are arranged side by side, the fans 51 can be arranged according to the shape of the radiator 40. Thereby, it becomes possible to introduce air into the radiator 40 in a wide range, and the radiator 40 can be efficiently cooled.
Furthermore, since the generator apparatus 3 has the plurality of fans 51, even if the driving of any one of the fans 51 is stopped due to a failure or the like, the other fans 51 can cool the radiator 40. Thereby, it can suppress that cooling of radiator 40 becomes impossible. Therefore, the reliability of the motor generator 3 can be improved.

In addition, since the radiator 40 is disposed so as to face the outside of the vehicle, the radiator 40 can be cooled by the traveling wind. Therefore, the radiator 40 can be efficiently cooled.
In addition, since a predetermined distance is provided between the radiator 40 and the fan 51, the air flow by the fan 51 can be rectified in the gap between the radiator 40 and the fan 51. As a result, the radiator 40 can be uniformly cooled, and the radiator 40 can be efficiently cooled.

  In addition, according to the electric pneumatic vehicle 1, since the above-described generator generator 3 is provided, the occupied area of the generator generator 3 can be saved, and the cooling efficiency of the radiator 40 can be improved.

  According to at least one embodiment described above, the plurality of fans arranged side by side have a motor having an outer rotor and a plurality of blades provided on the outer periphery of the outer rotor, whereby an engine generator The space occupied by 3 can be saved.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Electric pneumatic vehicle (electric vehicle), 2 ... Car body (object to be attached), 3 ... Motor generator, 7 ... Bogie, 10 ... Frame, 20 ... Engine (internal combustion engine), 30 ... Generator, 40 ... Radiator (Heat exchanger), 51 ... fan, 53 ... motor, 55 ... blade

Claims (2)

A frame to be attached to the object to be attached;
An internal combustion engine suspended on the frame;
A generator suspended on the frame and capable of generating power by the power of the internal combustion engine;
A heat exchanger suspended on the frame and through which a heat medium for cooling the internal combustion engine flows;
A motor having an outer rotor and blades provided on an outer periphery of the outer rotor, and arranged side by side along the main surface of the heat exchanger between the internal combustion engine and the heat exchanger. With multiple fans
A motor generator comprising: The car body,
A plurality of carriages mounted on the vehicle body;
The motor generator according to claim 1, wherein the generator is mounted in a region between the carts at a lower part of the vehicle body and outputs electric power for driving at least one of the carts;
An electric vehicle comprising:

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