JPH08494Y2 - Braking energy recovery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a braking energy recovery device that generates water by utilizing energy during braking in an internal combustion engine such as an automobile engine.

(Prior Art) Of the energy consumed in automobile engines, braking energy accounts for several tens of percent of the total energy. However, this is now rejected in the form of frictional heat.

(Problems to be solved by the invention) Therefore, if the braking energy currently discarded can be easily recovered and effectively used, it will be useful for energy saving.

The present invention has been made in view of the above points, and an object thereof is to provide a braking energy recovery device that can easily recover braking energy and can generate water with the recovered energy.

(Means for Solving the Problem) In order to achieve the above object, a braking energy recovery device according to the present invention is configured such that a compressor, a radiator, an expansion valve, and an evaporator are sequentially connected by a pipe to seal a refrigerant therein. A refrigerator that continuously repeats a refrigeration cycle with expansion / compression state change when the compressor is driven, and when the internal combustion engine is in a braking state, the compressor is driven to release an atmosphere containing moisture. It is cooled in an evaporator and condensed to produce water.

(Operation) According to this configuration, when the internal combustion engine is in the braking state, the compressor is driven and the refrigeration cycle is continuously started. Then, in this refrigeration cycle, the evaporator is cooled, and when it contacts the atmosphere containing moisture, it condenses into water droplets. Therefore, water can be produced by collecting these water drops.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram of a braking energy recovery device to which the present invention is applied.

This apparatus is composed of an engine 1 as an internal combustion engine, a braking energy extracting means 2, an electrolysis tank 3, a controller 4, a water maker 5, and the like.

More specifically, the engine 1 includes an engine body 6, and an intake pipe 7, an exhaust pipe 8, a transmission 9 and the like are arranged in the engine body 6. An air cleaner 10 is connected to the intake passage of the intake pipe 7, and the exhaust pipe 8
An exhaust post-treatment means 11, a muffler 12, and the like are connected to the exhaust path of the. On the other hand, the transmission 9 is provided with the braking energy extracting means 2, the compressor 26, the differential gear 13, the tire 14, and the like.

The exhaust post-treatment means 11 includes a canning container 15 and a particulate wrap 16 contained in the canning container 15.
And an electric heater 17 provided on the upstream side of the particulate wrap 16 adjacent to the particulate wrap 16 so as to cross the inside of the canning container 15. Then, in the exhaust post-treatment means 11, when it is determined that the amount of particulates accumulated on the particulate wrap 16 exceeds a predetermined value, a switch (not shown) is turned on and a current is supplied to the heater 17. Then, the exhaust gas heated by this current and passing through the heater 17 is further heated to flow toward the particulate wrap 16 side, and the high temperature gas incinerates the particulates on the particulate wrap 16 to burn the particulate wrap 16 The reproduction processing of can be performed.

Next, the braking energy extraction means 2 is configured as an alternator, for example. Then, it is usually separated so as not to become a load when driving the engine, and is connected and driven when shifting to the braking state, and an AC voltage is generated. The AC voltage is converted into a DC voltage by the rectifier 18 and supplied to the electrolysis tank 3.

The electrolysis tank 3 electrolyzes the water in the water tank 3c by the pair of electrodes 3a and 3b to generate hydrogen gas (H ₂ ) and oxygen gas (O ₂ ). Then, the hydrogen gas generated in the electrolysis tank 3 is stored in the H ₂ tank 20 via the pump 19, and the oxygen gas is stored in the O ₂ tank 22 via the pump 21. Further, the H ₂ tank 20 is connected to the intake pipe 7 on the downstream side of the air cleaner 10 by the pipe 24A.
The O ₂ tank 22 is also connected to the intake pipe 7 on the downstream side of the air cleaner 10 via a pipe 24B. An opening / closing amount adjusting valve 23 and an opening / closing amount adjusting valve 25, whose opening / closing amounts are adjusted by the controller 4, are provided in the middle of the pipes 24A and 24B, respectively.

The controller 4 is connected to an electronic control circuit system (not shown) of the engine 1, opens the opening / closing amount adjusting valves 23 and 25 when the engine 1 starts and accelerates, and controls the H ₂ tank 20 and the O ₂ tank.
Hydrogen gas and oxygen gas can be supplied from the _two tanks 22 into the intake pipe 7, respectively.

Further, in the electrolysis tank 3, the water in the water tank 3c is electrolyzed and thereby gradually decreases, but this water is supplied by the fresh water generator 5.

This water maker 5 is a part of the present invention. The fresh water generator 5 is equipped with a refrigerator that uses the principle well known as a compression refrigerator, and in this refrigerator, a positive displacement compressor 26 driven by a transmission 9, a radiator plate 27a, and a radiator plate 27a are provided. A radiator 27 having a fan 27b for cooling the radiator plate 27a, a refrigerant tank 28 for storing refrigerants such as ammonia and chlorofluorocarbon, an expansion valve 29, and a container 31 in which water is placed. It is composed of an evaporator 30 and the like, which are connected to each other by a pipe 33 so that a refrigerant is enclosed therein and circulates.

Next, the operation of producing water by the water producing device 5 will be described. First, in the fresh water generator 5, a refrigerant such as ammonia or chlorofluorocarbon is reused in a liquid->gas-> liquid refrigeration cycle. The compressor 26 is separated from the transmission 9 so that the load does not normally drive the engine, and the refrigerator is stopped. On the other hand, when the engine 1 is braked, this is detected and the compressor 26 and the transmission 9 are maintained during the braking.
And are connected. Then, the compressor 26 compresses the refrigerant to a high temperature and high pressure, and at the same time, the radiator 27 radiates heat to cool and liquefy the refrigerant. Further, the liquefied high-pressure refrigerant is stored in the refrigerant tank 28. Then, the liquefied refrigerant is discharged to the evaporator 30 side through the expansion valve 29,
Vaporize within 30. Then, when vaporized, heat is taken from the surroundings, whereby the water in the container 31 is cooled. The water at this time is 0 ° C. or higher. And container 31
As the water inside cools, the outer surface of the container 31 also cools. At the same time, the moisture-containing atmosphere contacting the container 31 is also cooled and condensed, and water droplets 32 are formed on the outer surface of the container 31. Then, as the water droplets 32 grow larger, the saucer 33
It falls on top of it, which creates water. The water droplets 32 are temporarily stored in the water tank 35, and when the water in the electrolysis tank 3 is exhausted, the water drops are sequentially supplied into the electrolytic decomposition tank 3.

That is, in this fresh water generator 5, the water in the container 31 is cooled without directly contacting the atmosphere with the evaporator 30, and the container 31 is cooled by the cooling water at an outer surface temperature of 0 ° C. or higher. When the outer surface comes into contact with an atmosphere containing moisture, water droplets 32 condense and form. Therefore, since the evaporator 30 is not made by directly contacting the atmosphere containing moisture, the outer surface temperature of the atmosphere containing moisture does not fall below 0 ° C.
It is possible to prevent frost from adhering to 30 and deteriorating the water production capacity. It should be noted that, in the case where frost does not adhere to the evaporator 30 even when the atmosphere containing moisture directly comes into contact with the evaporator 30, the container 31 containing water is not necessarily provided. Further, the cold air thus cooled can be used for air conditioning in the summer or for intake of the engine to reduce the load on the engine and increase the output.

Therefore, in the braking energy recovery device configured as in this embodiment, when the braking is applied, the compressor 26 is driven during the braking, and the fresh water generating function is activated. The energy of the engine at that time is extracted as an electric signal by the braking energy extracting means 2, and this voltage is applied to the electrolysis tank 3 via the rectifier 18. Then, in the electrolysis tank 3, water is decomposed into hydrogen and oxygen, and this is converted into H through the pumps 19 and 21.
It is stored in ₂ tank 20 and O ₂ tank 22. And
At the time of starting and accelerating the engine 1, the opening / closing amount adjusting valves 23, 25 are opened under the control of the controller 4, and hydrogen gas and oxygen gas are supplied into the intake pipe 7 through the pipes 24A, 24B and burned. Further, when the hydrogen gas and the oxygen gas are sucked into the engine 1, the hydrogen gas burns well without generating smoke, so that a large torque can be obtained at a high load such as at the time of starting or reaccelerating. Oxygen gas is in a state where smoke can be significantly reduced. As a result, the performance of the engine equipped with this device can be improved.

In addition, although the case where the water generated in the fresh water generator 5 is used for supplying to the electrolysis tank 3 has been described in the present embodiment, the present invention is not limited to such an application, and for example, light oil and water are mixed. It may also be used to make emulsion fuels.

(Effects of the Invention) As described above, according to the braking energy recovery device of the present invention, when the internal combustion engine is in the braking state, the compressor is driven, the refrigeration cycle is started and the evaporator is cooled, and The atmosphere containing the dampness that has touched condenses into water droplets, which can be made into water. Therefore, various devices can be realized by using this water, and the braking energy can be effectively used.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a braking energy recovery device for an internal combustion engine to which the present invention is applied. 1 ... Engine, 5 ... Water maker (refrigerator), 26 ... Compressor, 27 ... Radiator, 28 ... Expansion valve, 30 ... Evaporator, 32 ...
… Water drops, 33 …… pipes.

Claims (1)

[Scope of utility model registration request] 1. A compressor, a radiator, an expansion valve and an evaporator are sequentially connected by a pipe to enclose a refrigerant therein, and a refrigeration cycle with a change in expansion / compression state is continuously driven by driving the compressor. A braking energy recovery device, characterized in that the compressor is driven when the internal combustion engine is in a braking state, the atmosphere containing moisture is cooled by the evaporator and condensed to generate water. .