JP2001271641A - Exhaust gas power generator of automobile engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhaust gas power generator of an automobile engine, capable of generating, accumulating and feeding power by effectively utilizing the exhaust gas of an automobile, particularly in a large size automobile. SOLUTION: A windmill is provided in the exhaust passage of an engine, and a power generator is arranged for generating electricity by the rotation of the rotary shaft of the windmill, and a capacitor is provided to accumulate the power generated by the generator downstream from the windmill. The capacitor is connected to feeder terminals, and a muffler is provided in the downstream of the exhaust passage connected to the windmill chamber for discharging the exhaust gas outside. The exhaust gas power generator for the automobile engine is thus constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generator utilizing exhaust gas from an automobile engine.

[0002]

2. Description of the Related Art Recently, not only gasoline-powered vehicles but also hybrid vehicles using a gasoline engine and an electric motor have been developed, and attempts have been made to improve fuel efficiency. Attempts have also been made to drive the motor by wind power or solar thermal power. In addition to exhaust gas purification technology, many technologies that use exhaust gas to generate power have been proposed, but most of them have a power generation unit that converts the thermal energy of exhaust gas into electric energy, Are taken out and stored in a battery to drive a motor in a car or supply it to various electric devices in the car.This power generation unit generates heat like a semiconductor element with a Seebeck effect. An element that can be converted to electricity is used in combination.
Further, a technique of generating power by utilizing wind pressure during traveling is disclosed in, for example, Japanese Patent Application Laid-Open No. 58-79678, in which a wind turbine mounted on an automobile is turned to drive a generator, and the power is generated by the generator. It is wind power generation that charges the storage battery with the obtained power.

[0003]

Although the above proposal is a method that is effective to some extent, most of the power generation systems used in hybrid vehicles use special semiconductor elements and consume the generated electricity by themselves. Therefore, it is expensive and the use of the generated power for other purposes is not considered at all. In particular, a hybrid vehicle is not considered at all in a large vehicle equipped with a diesel engine or the like. Furthermore, there are many proposals for wind power generation, but they only use the wind pressure during driving of the car, and try to use this as the driving energy of the car.
Since it is difficult to obtain the rotation of the windmill when the car starts, it is necessary to use both the battery that is charged by the generator and the battery that is used as the power supply, but the engine must be stopped unless the power generated by the generator is constantly supplied. There is a problem that the automobile cannot be moved due to the consumption of the battery in the state. Furthermore,
Because it does not use the heat energy of exhaust gas,
There is no contribution to the prevention of global warming. An object of the present invention is to solve such various problems.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is intended to provide an automobile capable of providing exhaust gas from the automobile as electric power for general use. If you are traveling on a highway, if you install a power receiving facility at a tollgate or gas station near the exit of the highway, you can receive electricity generated by the car and use it for other purposes. The focus was on the fact that electricity can be used, and the effect of utilizing energy increases. That is, the outline is as follows.

According to a first aspect of the present invention, a wind turbine is provided in an exhaust passage of an engine, and a generator that is rotated by a rotation shaft of the wind turbine downstream of the wind turbine, a power storage device for electric power generated by the generator,
A power supply terminal for outputting electric power of a storage battery is provided, and a muffler is provided downstream of an exhaust passage connected to a wind turbine room. The invention according to claim 2 is characterized in that the car is a large car,
The exhaust gas power generation device for an automobile engine according to claim 1, wherein the windmill room, the generator, and the storage device are provided on a lower surface of the vehicle body.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 shows an example of an exhaust gas power generation apparatus for an automobile engine according to the present invention. An exhaust pipe 12 for exhaust gas is connected downstream of an engine 11 and a windmill room 15 is provided downstream thereof. The windmill room 15 has a windmill composed of blades 14 and a rotating shaft 13 that are rotated by exhaust gas, and is configured to rotate efficiently by wind energy of the exhaust gas. An AC generator 17 is provided downstream of the wind turbine chamber 15 to generate power by rotation of a transmission shaft 16 that rotates integrally with the rotation shaft of the wind turbine. The power generated by the AC generator 17 is stored in a storage device 18. The output is connected to the power supply terminal 19, and the power can be supplied by connecting to an external power receiving facility. Also, sent to the windmill room 15,
The exhaust gas that has caused the wind turbine blades 14 to rotate is discharged to the outside via a muffler 20. Although this wind turbine is shown in the figure with three sets of two blades, it is natural in design to make the number of blades three or more and to set the number of blades to an arbitrary number. It should be noted that since a large vehicle has a high underfloor, there is a space for easily mounting the power generation equipment according to the present invention, which is advantageous in that respect.

According to the present invention, unlike the prior art, a heat conversion element is not used, and the wind pressure fluctuation is not very large as in the case of running wind power generation. And the power obtained is, as mentioned earlier,
If power receiving equipment is prepared at toll gates and gas stations at expressway exits, power can be sold very easily.For example, even if the use of heavy-pollution heavy oil as fuel is stopped, gasoline will be used. The cost increase can be reduced by selling the generated power, and in general, the use of exhaust gas that is merely emitted contributes somewhat to the prevention of global warming, and It can respond to power liberalization.

[0008]

According to the present invention, as described above, a windmill is provided in the exhaust path to generate power, the equipment cost is relatively low, and the electric power charged in the storage battery is, for example, an expressway. By installing power receiving equipment at toll booths, gas stations, etc., power can be sold in response to the liberalization of electric power.Especially, large vehicles generate a lot of exhaust gas while driving, so that The energy required is large, and the technical effects of the present invention are incalculable.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of an exhaust gas power generation method for an engine according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Engine 12 Exhaust pipe 13 Rotating shaft 14 Blade 15 Windmill room 16 Transmission shaft 17 Generator 18 Electric storage device 19 Power supply terminal 20 Muffler

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[Procedure amendment]

[Submission date] May 17, 2001 (2001.5.1)
7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002]

2. Description of the Related Art Recently, not only gasoline engine vehicles but also hybrid vehicles using a gasoline engine and an electric motor have been developed, and there have been attempts to improve fuel efficiency. Attempts have also been made to drive the motor by wind power or solar thermal power. In addition to exhaust gas purification technology, many technologies that use exhaust gas to generate power have been proposed, but most of them have a power generation unit that converts the thermal energy of exhaust gas into electric energy, Are taken out and stored in a battery to drive a motor in a car or supply it to various electric devices in the car.This power generation unit generates heat like a semiconductor element with a Seebeck effect. An element that can be converted to electricity is used in combination.
Further, a technique of generating power by utilizing wind pressure during traveling is disclosed in, for example, Japanese Patent Application Laid-Open No. 58-79678, in which a wind turbine mounted on an automobile is turned to drive a generator, and the power is generated by the generator. It is wind power generation that charges the storage battery with the obtained power.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an automobile which can supply exhaust gas from the automobile as electric power for general use. If you are traveling on a highway, if you install a power receiving facility at a tollgate or gas station near the exit of the highway, you can receive electricity generated by the car and use it for other purposes. The focus was on the fact that electricity can be used, and the effect of utilizing energy increases. That is, the outline is as follows.

Claims (2)

[Claims] 1. A wind turbine room is provided in an exhaust passage of an automobile engine, a generator which is rotated by a rotation shaft of a wind turbine in the wind turbine room, and a power storage device for electric power generated by the generator.
An exhaust gas power generation system for an automobile engine, comprising: a power supply terminal for outputting electric power of a storage device; and a muffler provided downstream of an exhaust passage connected to a wind turbine room. 2. The vehicle according to claim 1, wherein the vehicle is a large vehicle, and a windmill room, a generator, and a capacitor are provided on a lower surface of the vehicle body.
An exhaust gas power generation device for an automobile engine according to claim 1.