JP2006347429A - Hybrid vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hybrid vehicle capable of arranging a generator for performing power feeding to an auxiliary machine driven using power from an internal combustion engine and an electric motor for outputting traveling power in a compact manner, and driving the generator for performing power feeding to the electric motor for outputting the traveling power using the power from the internal combustion engine without changing strength of a power transmission mechanism such as a belt for driving the auxiliary machine using the power from the internal combustion engine. <P>SOLUTION: A high pressure alternator 35 for feeding the power to a motor 42 of a rear wheel drive system 41 and a high pressure battery 36 for feeding the power to the motor 42 is arranged on an upper part of an automatic transmission 24 connected to a laterally placed engine 22. The rotation shaft is connected to a crank shaft near a connection part of the engine 22 and the automatic transmission 24 using an exclusive belt 34. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hybrid vehicle, and more particularly, to a hybrid vehicle equipped with an internal combustion engine and an electric motor.

  Conventionally, this type of automobile uses multiple belts hung on the crankshaft on the opposite side of the engine transmission to drive multiple auxiliary equipment such as an air conditioning compressor, starter motor, and power steering pump. Have been proposed (see, for example, Patent Document 1). In this automobile, the plurality of auxiliary machines are all arranged on the side opposite to the engine transmission.

Further, there has been proposed one that drives an alternator disposed on an upper portion of a transmission using a belt and an auxiliary transmission shaft that are hung on a crankshaft on the opposite side of the transmission of the engine (for example, Patent Document 2). reference).
Japanese Patent Laying-Open No. 2004-301011 (FIG. 1) JP-A-8-21258 (FIG. 5)

  However, in the former automobile, when a generator that supplies power to an electric motor that outputs driving power is driven using any belt, it is necessary to increase the strength of the belt and it is difficult to arrange the generator. It will be something. The need to increase the strength of such belts arises in the latter automobile as well. In the latter automobile, the space for arranging the shaft must also be considered.

  One object of the hybrid vehicle of the present invention is to compactly arrange an auxiliary machine that is driven by using power from an internal combustion engine and a generator that supplies power to an electric motor that outputs driving power. Further, the hybrid vehicle of the present invention outputs power for traveling using the power from the internal combustion engine without changing the strength of the power transmission mechanism such as a belt that drives the auxiliary machine using the power from the internal combustion engine. Another object is to drive a generator that supplies power to the motor.

  The hybrid vehicle of the present invention employs the following means in order to achieve at least a part of the above-described object.

The hybrid vehicle of the present invention
An internal combustion engine arranged at the front of the vehicle;
Shift transmission means arranged adjacent to the internal combustion engine, capable of shifting the power of the output shaft of the internal combustion engine and transmitting it to the axle side;
An electric motor capable of outputting power to an axle different from the axle;
The internal combustion engine is disposed on a side opposite to the transmission transmission means, and is transmitted to the internal combustion engine from the output shaft of the internal combustion engine via a first power transmission mechanism on the side opposite to the transmission transmission means. An auxiliary machine that is driven using the power to be
The motor is disposed above the speed change transmission means, and is transmitted to the electric motor using power transmitted from the output shaft of the internal combustion engine via a second power transmission mechanism on the same side as the speed change transmission means to the internal combustion engine. A generator for generating power that can be supplied;
It is a summary to provide.

  In this hybrid vehicle of the present invention, the transmission transmission means is arranged adjacent to the internal combustion engine arranged in the front part of the vehicle, and the auxiliary machine arranged on the side opposite to the transmission transmission means is connected to the internal combustion engine on the side of the internal combustion engine. The internal combustion engine is driven on the same side as the speed change transmission means with respect to the internal combustion engine by driving using the power transmitted from the output shaft of the engine through the first power transmission mechanism and arranged above the speed change transmission means. The power is transmitted using the power transmitted from the output shaft via the second power transmission mechanism. That is, since the generator is driven using the second power transmission mechanism, the power from the internal combustion engine is used without increasing the strength of the first power transmission mechanism for driving the auxiliary machine more than necessary. The generator can be driven. In addition, since the auxiliary machine and the generator are arranged on both sides of the internal combustion engine, the generator that supplies power to the auxiliary machine that is driven using the power from the internal combustion engine or the motor that outputs the driving power is made compact. Can be arranged.

  In such a hybrid vehicle of the present invention, the internal combustion engine is arranged such that the output shaft is in the left-right direction of the vehicle, and the shift transmission means is configured such that the rotation shaft of the rotating element is coaxial or parallel to the output shaft. It can also be arranged.

  In the hybrid vehicle of the present invention, the auxiliary machine includes a low-voltage generator having a first generation power with a rated generated power, and the generator has a high-voltage power generation with a second power having a higher rated power generation than the first power. It can also be a machine.

  Furthermore, in the hybrid vehicle of the present invention, the second power transmission mechanism may be a mechanism including a belt, or may be a gear mechanism.

  Next, the best mode for carrying out the present invention will be described using examples.

  FIG. 1 is a configuration diagram showing an outline of a planar arrangement of a configuration of a hybrid vehicle 20 as an embodiment of the present invention, and FIG. 2 is a perspective view schematically showing a configuration of a front portion of the hybrid vehicle 20 of the embodiment. It is a perspective view. In the hybrid vehicle 20 of the embodiment, as shown in the figure, the front wheels 54a and 54b are attached to the power from the engine 22 via an automatic transmission (indicated as A / T in the figure) 24 and a gear mechanism 26 including a differential gear. The power from the front wheel drive system 21 and the motor (shown as MG in the figure) 42 output to the axle 52 is output to the axle 56 to which the rear wheels 58a and 58b are attached via the gear mechanism 44 including a differential gear. And a rear wheel drive system 41.

  The engine 22 is an internal combustion engine that is driven using a hydrocarbon-based fuel such as gasoline or light oil. The automatic transmission 24 is composed of a torque converter and a stepped or continuously variable transmission, and is disposed near the left front wheel 54a via a damper (not shown) so as to be coaxial with the crankshaft of the engine 22. Yes. A radiator 38 is arranged in front of the engine 22 and the automatic transmission 24 in the vehicle.

  A low pressure alternator 32 and an air compressor 33 as auxiliary machines are arranged on the opposite side (right front wheel 54 b side) of the engine 22 to the automatic transmission 24, and the rotation shaft thereof is connected to the crankshaft by belts 30 and 31. ing. The low-voltage alternator 32 generates electric power with a rated voltage of 14 V using the power from the engine 22 and supplies electric power to a low-voltage battery (not shown) that supplies electric power to electric auxiliary equipment such as a headlamp and a blinker.

  A high-pressure alternator 35 is disposed above the automatic transmission 24 on the automatic transmission 24 side of the engine 22, and its rotating shaft is connected to the crankshaft by a belt 34 in the vicinity of the connecting portion between the engine 22 and the automatic transmission 24. Yes. The high-voltage alternator 35 generates power with a rated voltage of 38 V using the power from the engine 22, and is arranged near the motor 42 of the rear wheel drive system 41 and the left front wheel 54 a on the upper part of the automatic transmission 24. Electric power is supplied to the high voltage battery 36 to be supplied.

  Next, the reason why the high-pressure alternator 35 is arranged on the upper part of the automatic transmission 24 will be described. Except for the high-voltage alternator 35 and the high-voltage battery 36, the front-wheel drive system 21 of the embodiment has the same configuration as a normal front-wheel drive gasoline engine vehicle. Since the power unit mounted on the vehicle is arranged in a limited space, it is designed to be as compact as possible, and the same applies to a normal front-wheel drive gasoline engine vehicle. When such a normal front-wheel drive gasoline engine vehicle is equipped with a high-pressure alternator 35 for supplying power to the motor 42 of the rear-wheel drive system 41 as in the embodiment, the high-pressure alternator 35 is connected to the low-pressure alternator 32 and the air compressor 33. Similarly, the engine 22 may be disposed on the side opposite to the automatic transmission 24 (on the right front wheel 54b side). In this case, it is necessary to find the space of the high-voltage alternator 35 and to transmit the power corresponding to the generated power of the high-voltage alternator 35, so that it is necessary to change the strength of the belts 30 and 31. In addition, the high-voltage alternator 35 has a larger rated power than the low-voltage alternator 32, and therefore requires a larger space. As can be seen from the above-described background art example, the high-pressure alternator 35 is disposed on the side opposite to the automatic transmission 24 of the engine 22 (on the right front wheel 54b side), considering that a plurality of auxiliary machines are disposed. In order to secure space, it is basically necessary to make design changes. On the other hand, since the automatic transmission 24 is usually lower than the height of the engine 22, as shown in the hybrid vehicle 20 of the embodiment, if a high-pressure alternator 35 is arranged on the upper part of the automatic transmission 24, the normal front-wheel drive can be achieved. The high pressure alternator 35 can be mounted using the arrangement of the gasoline engine vehicle as it is. Moreover, the belt 34 is designed according to the performance of the high pressure alternator 35 because the high pressure alternator 35 is driven using a belt 34 dedicated to the high pressure alternator 35 different from the belts 30 and 31 that drive the low pressure alternator 32 and the air compressor 33. Therefore, it is not necessary to change the strength of the belts 30 and 31. In the hybrid vehicle 20 of the embodiment, for this reason, the high-pressure alternator 35 is disposed on the upper part of the automatic transmission 24, and the rotation shaft thereof is used in the vicinity of the connecting portion between the engine 22 and the automatic transmission 24 using a dedicated belt 34. It is connected to.

  According to the hybrid vehicle 20 of the embodiment described above, the high-voltage alternator 35 that supplies power to the motor 42 of the rear-wheel drive system 41 and the high-voltage battery 36 that supplies power to the motor 42 is disposed above the automatic transmission 24. Thus, the arrangement of a conventional front-wheel drive gasoline engine vehicle can be used as it is. As a result, the high-pressure alternator 35 can be arranged in a compact manner. In addition, since the rotary shaft of the high-pressure alternator 35 is connected to the crankshaft using a dedicated belt 34 in the vicinity of the connecting portion between the engine 22 and the automatic transmission 24, belts 30 and 31 for driving the low-pressure alternator 32 and the air compressor 33 are connected. There is no need to change the intensity.

  In the hybrid vehicle 20 of the embodiment, the rotating shaft of the high-pressure alternator 35 is connected to the crankshaft using a dedicated belt 34 in the vicinity of the connecting portion between the engine 22 and the automatic transmission 24. The shaft may be connected to the crankshaft using a gear mechanism in the vicinity of the connecting portion between the engine 22 and the automatic transmission 24.

  In the hybrid vehicle 20 of the embodiment, the high voltage battery 36 that supplies electric power to the motor 42 and also receives the electric power generated by the high voltage alternator 35 is disposed in the vicinity of the left front wheel 54 a in the upper part of the automatic transmission 24. May be placed anywhere on the vehicle. For example, it may be arranged at the rear of the vehicle.

  The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

  The present invention is applicable to the hybrid vehicle manufacturing industry.

1 is a configuration diagram showing an outline of a planar arrangement of a configuration of a hybrid vehicle 20 as one embodiment of the present invention. It is a see-through perspective view showing the outline of the configuration of the front portion of the hybrid vehicle 20 of the embodiment.

Explanation of symbols

20 hybrid vehicle, 21 front wheel drive system, 22 engine, 24 automatic transmission, 26 gear mechanism, 30, 31 belt, 32 low pressure alternator, 33 air compressor, 34 belt, 35 high pressure alternator, 36 high pressure battery, 38 radiator, 41 rear wheel Drive system, 42 motor, 44 gear mechanism, 52 axle, 54a, 54b front wheel, 56 axle, 58a, 58b rear wheel.

Claims (5)

An internal combustion engine arranged at the front of the vehicle;
Shift transmission means arranged adjacent to the internal combustion engine, capable of shifting the power of the output shaft of the internal combustion engine and transmitting it to the axle side;
An electric motor capable of outputting power to an axle different from the axle;
The internal combustion engine is disposed on a side opposite to the transmission transmission means, and is transmitted to the internal combustion engine from the output shaft of the internal combustion engine via a first power transmission mechanism on the side opposite to the transmission transmission means. An auxiliary machine that is driven using the power to be
The motor is disposed above the speed change transmission means and is transmitted to the electric motor using power transmitted from the output shaft of the internal combustion engine via a second power transmission mechanism on the same side as the speed change transmission means to the internal combustion engine. A generator for generating power that can be supplied;
A hybrid car with The hybrid vehicle according to claim 1,
The internal combustion engine is arranged such that the output shaft is in the left-right direction of the vehicle,
The shift transmission means is a hybrid vehicle in which a rotation shaft of a rotating element is arranged so as to be coaxial or parallel to the output shaft. A hybrid vehicle according to claim 1 or 2,
The auxiliary machine includes a low-voltage generator whose rated generated power is the first power,
The generator is a high-voltage generator having a second electric power whose rated generated electric power is larger than the first electric power.   The hybrid vehicle according to claim 1, wherein the second power transmission mechanism is a mechanism including a belt. The hybrid vehicle according to claim 1, wherein the second power transmission mechanism is a gear mechanism.

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