JPH0540644Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The invention relates to an auxiliary brake device for automobiles, diesel cars, etc., and in particular, to obtain braking force by an auxiliary brake using a generator. The present invention relates to an auxiliary brake device for a vehicle.

(Prior Art) When an automobile or the like goes down a long downhill slope, engine braking is normally used, but when sufficient braking force cannot be obtained with engine braking alone, service braking is used in combination. However, when the service brake is used for a long period of time, the temperature of the brake increases and there is a possibility that the brake shoe may burn out. Therefore, in such a case, the exhaust brake is protected in order to provide braking force to the vehicle.

Conventional auxiliary brakes, such as auxiliary brake devices using generators, include the
As seen in Publication No. 77602 and Japanese Unexamined Patent Publication No. 61-223237, the rotor part of the generator is provided on the outer periphery of the flywheel of the engine, and the stator part is provided in the flywheel housing so as to face the rotor. installed.

(Problem to be solved by the invention) The drawbacks of such conventional auxiliary brake devices are:
It functions well as an auxiliary brake when going downhill to a certain extent, but when going downhill steeply, engine braking and regular brakes are inevitably used frequently, which can lead to poor fuel efficiency and brake shock. There was a risk of burnout.

In addition, if you try to increase the braking force with only an auxiliary brake device using one generator, the generator will be larger and a larger battery will be required, which will increase the weight and take up a lot of space. There was a problem with that.

This invention was made in view of these problems, and it is possible to improve the braking ability.Also, even when you want to obtain a large braking force, the battery capacity remains the same; It is an object of the present invention to provide an auxiliary brake device for a vehicle that can be made smaller in size and can effectively utilize the generated output of a generator during braking without wasting it.

[Structure of the invention] (Means and effects for solving the problem) In order to achieve the above purpose, the present invention has the following features:
An auxiliary brake for a vehicle that has a main generator unit and an auxiliary generator unit in the flywheel housing, and these generators absorb the running energy of the vehicle and generate electricity, which is used as braking force for the vehicle. In the apparatus, the main generator unit includes a main generator rotor provided on the outer periphery of the flywheel, a main generator stator provided in the flywheel housing facing the main generator rotor, and a main generator rotor provided in the flywheel housing. The magnetic current is supplied from the battery, and the auxiliary generator unit has an auxiliary generator rotor provided on the end face of the flywheel, and an auxiliary generator stator facing the auxiliary generator rotor within the flywheel housing. The main generator unit is provided with a field current, and the field current is supplied from the power generation output of the main generator unit.

In this way, the present invention has the above-mentioned configuration, so that it is possible to prevent deterioration of fuel efficiency and burnout of the brake shoe due to frequent use of engine brakes and service brakes even when the vehicle is on a steep downhill slope.
It is possible to improve the braking ability and effectively utilize the generated output of the generator.

(Example) An example of the present invention will be described below with reference to the drawings.

FIG. 2 shows an engine 12 equipped with an auxiliary brake device according to this embodiment, and a flywheel housing 13 provided with a generator unit is connected to the rear side of the engine 12. There is.

On the other hand, a transmission 14 is provided on the back side of the flywheel housing 13.
With this transmission 14, the engine 1
2 to a predetermined value, which is then transmitted to the drive wheels via the propeller shaft 15.

Next, the configuration of the auxiliary brake device provided within the flywheel housing 13 will be explained.

As shown in FIG. 1, a flywheel 2 fixed to the tip of the crankshaft 1 is disposed within the flywheel housing 13. As shown in FIG. A main generator rotor 3 is disposed on the outer periphery of the flywheel 2, and auxiliary generator rotors 4 and 5 are disposed on the side surface along the circumferential direction.

On the other hand, the flywheel housing 13
On the side, as shown in Fig. 1, there is a main generator rotor 3.
A main generator stator 6 is provided to face the auxiliary generator rotors 4 and 5, forming a main generator unit 16. 8 are provided, and these form auxiliary generator units 17, 18.

In addition, each generator stator 6, 7, 8 is connected to a control circuit 9.
This control circuit 9 is connected to a battery 10 and a load resistor 11.

The reason why the generator provided on the outer periphery of the flywheel 2 is used as the main generator is that the larger the rotation radius, the larger the braking torque can be obtained.

Next, the operation of the auxiliary brake device having the above configuration will be explained.

When a vehicle equipped with the auxiliary brake device of this embodiment goes down a long downhill slope, for example, the first stage auxiliary brake switch (not shown) provided in the driver's seat is used.
Insert. Then, field current flows from the battery 10 through the control circuit 9 to the main generator stator 6, and the main generator absorbs the running energy of the vehicle and generates electricity, thereby applying braking force to the vehicle. become. In this way, the vehicle is braked by the braking force of this auxiliary brake device.

Furthermore, when going down a very steep slope, the second and third stage power generation brake switches (not shown)
will be introduced sequentially.

Then, the generated output of the main generator unit 16, which has been flowing to the load resistor 11 and being consumed, becomes the field power source of the auxiliary generator units 17 and 18 via the control circuit 9, and as a result, the braking by the auxiliary generator is reduced. This will increase the overall braking capacity.

In this way, according to this embodiment, the power generation output of the main generator unit 16, which was conventionally consumed outside as heat, is used as the field power source for the auxiliary generator units 17 and 18 built into the flywheel housing 13. By utilizing the present invention, it becomes possible to provide an energy-efficient auxiliary brake device for a vehicle that can maintain a larger braking force and meet the demands for smaller size and lighter weight. Further, by controlling the power generation output of the auxiliary generator to a required level by the control circuit 9, it can also be used as a power source for driving electrical equipment such as other home appliances mounted on the vehicle.

Although the present embodiment has been described with reference to the case where two auxiliary generator units are provided, the number of auxiliary generator units is not limited to this and may be selected as appropriate as required.

[Effects of the invention] As explained above, according to the invention, the braking ability as an auxiliary brake can be improved, and even when a larger braking force is required, there is no need to increase the battery capacity, and the invention is compact and compact. It is possible to provide an efficient auxiliary brake device that is lightweight and has a large braking capacity.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an auxiliary brake device according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing an example of the arrangement of a drive device of an automobile. 1...Crankshaft, 2...Flywheel, 3...Main generator rotor, 4, 5...Auxiliary generator rotor, 6...Main generator stator, 7, 8...Auxiliary generator fixing child, 9... control circuit, 10... battery, 11... load resistance, 12... engine,
13...Flywheel housing, 14...Transmission, 15...Propeller shaft,
16... Main generator unit, 17, 18... Auxiliary generator unit.

Claims (1)

[Claims for Utility Model Registration] The main generator unit 16 installed in the flywheel housing 13 and the auxiliary generator unit 1
7 and 18, in which both generators absorb running energy of the vehicle and generate electricity, which is used as braking force for the vehicle. A rotor 3 is provided on the outer periphery of the flywheel 2, a main generator stator 6 is provided in the flywheel housing 13 facing the main generator rotor 3, and field current is supplied from a battery 10. In the auxiliary generator units 17 and 18, the auxiliary generator rotors 4 and 5 are provided on the end face of the flywheel 2, and the auxiliary generator stators 7 and 8 are installed in the flywheel housing 13. An auxiliary brake device for a vehicle, which is provided opposite the generator rotors 4 and 5, and whose field current is supplied from the power generation output of the main generator unit.