JPH0428225Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a retarder for an automobile, and more particularly to an automobile retarder in which the retarder is composed of a generator, and when the generator generates electricity, the work done from the outside is used as braking force.

[Summary of the idea]

The present invention uses the output of the generator constituting the retarder to charge the battery mounted on the vehicle, and also uses the regulator to adjust the regulated voltage for charging the battery. The voltage is higher than the normal voltage, and the retarder charges more power into the battery during braking, and reduces the current received during driving to reduce fuel consumption. This is an attempt to reduce the amount of water used.

[Conventional technology]

Retarders conventionally used to brake automobiles use eddy current, and
Kinetic energy was converted into thermal energy by rotating the rotor in a magnetic field formed by a stator coil and generating eddy currents in the conductor rotor. Such conventional eddy current type retarders have disadvantages in that they are large in size and weight. Furthermore, since the rotor is equipped with cooling fins, the rotation of the rotor causes wind damage to the fins even when braking is not applied, resulting in poor fuel efficiency.

[Problem that the invention attempts to solve]

In order to overcome these drawbacks, a retarder consisting of a generator has been proposed. By using the generator's rotor as a flywheel, it becomes possible to incorporate the retarder into the engine in a compact manner. Furthermore, the output of this generator makes it possible to charge the battery. However, in the past, the regulated voltage for charging the battery was set to the same value during braking by the retarder and during normal driving. Therefore, when the battery is nearly fully charged, even if regeneration is attempted during braking with the retarder, sufficient charging cannot be achieved due to the low acceptance current of the battery, resulting in the problem of low regeneration efficiency. Ta. The present invention has been made in view of these problems, and it is an object of the present invention to provide a retarder for an automobile that increases regeneration efficiency when charging a battery using the output of a generator constituting the retarder. This is the purpose.

[Means to solve the problem]

In the present invention, the retarder is constructed from a generator, and when the generator generates electricity, the work done from the outside is used as braking force, and the output of the generator is used to discharge the battery mounted on the vehicle. In the retarder for charging, the regulated voltage for charging the battery is adjusted by a regulator, and the regulated voltage during braking is made higher than the regulated voltage during normal driving.

[Effect]

Therefore, according to the present invention, by using a higher regulated voltage than during normal driving, it becomes possible to charge more electric power to the battery during braking, and conversely, the current received by the battery during driving is reduced. This makes it possible to reduce driving fuel consumption.

【Example】

The present invention will be described below with reference to the drawings. FIG. 1 shows an engine 1 equipped with a retarder according to an embodiment of the present invention, and this engine 1 is constituted by, for example, a diesel engine for a truck. A flywheel housing 2 is provided on the rear side of the engine 1.
A stator case 8 of an inductor type generator, which will be described later, is attached to the upper and lower sides of the housing 2. Furthermore, a transmission 5 is arranged on the back side of the flywheel housing 2, and an engine 1
The rotational speed of the propeller shaft 6 is changed to an appropriate value and transmitted to the drive wheels via the propeller shaft 6. Next, the structure of the retarder provided in this engine 1 will be described. As shown in FIG.
Inductor magnetic poles 7 are arranged at predetermined pitches along the circumferential direction on the outer peripheral surface of the flywheel 4 fixed to the end of the flywheel 4.
is provided. The flywheel 4 provided with this magnetic pole 7 constitutes a rotor of an inductor type generator, and this generator constitutes a retarder of an automobile. Cases 8 are provided at the top and bottom of the housing 2, and the stator of the inductor generator is housed in these cases 8. As shown in FIG. 3, this stator includes a plurality of pole cores 9 arranged in the circumferential direction of the flywheel 4. The lower end of the pole core 9 faces the inductor magnetic pole 7 via a small air gap, and the upper end is fixed to the cover plate of the case 8 via a stator yoke 10. The pole core 9 has an armature coil 11 and a field coil 1.
2 are wrapped respectively. Note that while the armature coil 11 is wound across two pole cores 9, one field coil 12 is wound around each pole core 9. Field coil 1 on the stator side with such a configuration
2 is connected to a battery 14 via a controller 13 shown in FIG. As shown in FIG. 1, this controller 13 includes a retarder switch 19 that is manually opened and closed, and further includes an automatic retarder switch 20 that is closed when the vehicle is braked. On the other hand, the armature coil 11 is connected to a load resistor 15, a regulator 21 built in the controller 13, and further connected to a battery 14 via a rectifier 22. It's becoming like that. Next, the operation of the retarder for this automobile configured as described above will be explained. For example, when a car equipped with this retarder goes down a long slope, the retarder switch 19 provided at the driver's seat is turned on. Then, the controller 13 shown in FIGS. 1 and 2 is activated, and a field current flows from the battery 14 through the controller 13 to the field coil 12 of the stator of the inductor generator. will be excited. When the field coil 12 is excited in this way, as shown in FIG. The paired pole cores 9 are magnetized to have different polarities. Therefore, at a certain moment, a magnetic circuit 35 as shown by the dotted line in FIG. 3 is formed, and when the flywheel 4 rotates and the inductor magnetic pole 7 moves by an angle corresponding to the pitch of the pole core 9 ,
A magnetic circuit 36 as shown by the chain line in FIG. 3 is formed. The magnetic fluxes passing through these magnetic circuits 35 and 36 both interlink with the armature coil 11, and the two
The directions of the magnetic fluxes passing through the two magnetic circuits 35 and 36 are reversed. Therefore, due to this change in magnetic flux, an electromotive force is induced in the armature coil 11, and this inductor type generator generates electricity. This means that the engine 1 or the vehicle drives the flywheel 4, and the work done from the outside at this time is absorbed as braking force. Therefore, the vehicle receives a braking force and is decelerated by the power generated by the inductor type generator. The generated output at this time is consumed by the load resistor 15 shown in FIGS. 1 and 2. Furthermore, during braking of the retarder made of the inductor-type power generator, the battery 14 is charged using this power generation output. The generated output taken out from the armature coil 11 is rectified by a rectifier 22 shown in FIG. 1, and the battery 14 is charged. The regulated voltage of the battery 14 at this time is adjusted by a regulator 21 built into the controller 13, and as shown in FIG. 4, the regulated voltage during braking is changed from that during normal driving. The voltage is set higher than the regular rate voltage. Therefore, according to such a configuration, it is possible to receive more electric power into the battery 14 during braking by the retarder, thereby making it possible to improve the regeneration efficiency of the generated output when the retarder is operating. Become. Furthermore, by adopting such a configuration, battery 1 during normal driving can be reduced.
Since the acceptance current of No. 4 is reduced, it is possible to reduce fuel consumption during normal driving.

[Effect of the idea]

As described above, the present invention uses a regulator to adjust the regulated voltage that charges the battery using the generated output of the retarder, and makes the regulated voltage during braking higher than the regulated voltage during normal driving. This is what I did. Therefore, according to such a configuration, the regeneration efficiency of the retarder is increased by allowing the battery to receive more electric power during braking by the retarder, and the current received by the battery during normal driving is reduced, thereby reducing driving fuel consumption. This makes it possible to reduce the

[Brief explanation of the drawing]

FIG. 1 is a side view of essential parts of an engine equipped with a retarder according to an embodiment of the present invention, and FIG. 2 is an external perspective view showing the retarder installed in this engine.
FIG. 3 is an enlarged front view of the main parts of this retarder, and FIG. 4 is a graph showing the state of regulation voltage adjustment by the regulator. In addition, in the symbols used in the drawings, 2...Flywheel housing, 4...Flywheel, 7
... Inductor magnetic pole, 9 ... Pole core, 10 ... Stator yoke, 11 ... Armature coil, 12 ... Field coil, 13 ... Controller, 14 ... Battery, 21 ... Regulator, 22 ... It is a rectifier.

Claims (1)

[Scope of utility model registration request] The retarder is composed of a generator, and when the generator generates electricity, the work done from the outside is used as braking force, and the output of the generator is used to charge a battery installed in the vehicle. A retarder for an automobile, characterized in that the regulated voltage for charging the battery is adjusted by the regulator, and the regulated voltage during braking is higher than the regulated voltage during normal driving.