JPH058727Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a braking system for vehicles, and in particular, in vehicles equipped with a charging generator, the generator is effectively used to obtain braking force. This invention relates to a vehicle braking device.

〓Summary of the invention〓 This invention provides a means to activate the charging generator installed in the vehicle during braking, and uses the work done from the outside as the generator generates electricity as braking force. In this way, the charging generator is effectively used to obtain braking force.

<Prior Art> In addition to service brakes, engine brakes are generally used to brake vehicles.
Furthermore, in large vehicles, an exhaust brake is used, and the braking force of the engine brake is further increased by blocking the exhaust system during braking. In addition, a retarder is used as a special device for obtaining braking force.

〓Problems to be solved by the invention〓 In such conventional vehicle braking devices,
In particular, providing a dedicated retarder increases costs. Another disadvantage is that exhaust braking alone does not provide much braking force, and for this reason, the braking force of engine braking is also small. Furthermore, there is a tendency for engines to become even more compact as they improve in performance or are equipped with turbochargers. Therefore, the braking force of the engine brake also tends to decrease.

The present invention was devised in view of these problems, and is a vehicle braking system that effectively utilizes a charging generator to obtain braking force without the need for a new dedicated braking means. The purpose is to provide the following.

〓Means for solving the problems〓 The present invention is a braking device for a vehicle equipped with a charging generator, which charges a battery and drives an electrical load using the output of the charging generator. In the braking device for a vehicle, the battery is connected to the field coil of the charging generator via a brake switch that is closed in conjunction with the action of taking your foot off the accelerator pedal, and the charging A generator coil of a vehicle generator is connected to a load resistor via a switch, and when braking, the brake switch is closed to operate the charging generator, and the charging generator absorbs the running energy of the vehicle. This relates to a braking device for a vehicle, characterized in that the power generation coil is used to generate electricity, and the generated output is consumed by a load resistor, thereby absorbing work done from the outside as braking force. It is.

〓Effect〓 Therefore, when the driver takes his foot off the accelerator pedal while the vehicle is running, the brake switch will be closed in conjunction with this, and the charging generator field will be released from the battery via the brake switch. A field current flows through the magnetic coil. Therefore, the charging generator, which is rotationally driven by the running energy of the vehicle, generates a generated output with its generating coil, and by consuming this generated output with the load resistance, the work done from the outside is reduced. It begins to absorb as braking force, thereby generating braking force.

〓Example〓 The present invention will be described below with reference to an illustrated example.
FIG. 1 shows an engine 10 for a vehicle equipped with a braking device according to an embodiment of the present invention, and this engine 10 is comprised of, for example, a diesel engine for a truck. And on the back side of this engine 10 is a flywheel housing 1.
1 is provided, and a flywheel is housed within this housing 11. A transmission 12 is provided on the rear side of the flywheel housing 11 to change the rotational speed of the engine 10 to an appropriate value and transmit it to the drive wheels. Further, this engine 10 is provided with an alternator 13 constituting a charging generator on the side thereof. A pulley 14 is attached to the rotating shaft of the alternator 13, and power is transmitted via a pulley 15 on the engine side and a V-belt 16.

The field coil of this alternator 13 is connected to a battery 18 via a regulator switch 17. And the above regulator switch 17
A brake switch 19 is connected in parallel to the switch. Further, the generator coil of this alternator 13 is connected to a load resistor 21 via a switch 20.

Figure 2 shows the circuit of this alternator, and shows the generating coil 22 that constitutes the alternator.
is connected to the battery 18 via a full-wave rectifier 23 consisting of six diodes. A series circuit of a switch 20 and a load resistor 21, and a load 24 consisting of electrical components are connected in parallel to the battery 18. Further, this battery 18 is connected to a voltage regulator 25 through a parallel circuit of a pair of switches 17 and 19, and this regulator 25 is connected to a field coil 26.

In the above configuration, when the alternator 13 is operated to charge the battery 18, the regulator switch 17 shown in FIGS. 1 and 2 is closed. Then Batsuteri 1
8 flows through the voltage regulator 25 to the field coil 26, the generator is excited, and the generator coil 22 generates an output. When the voltage obtained by the power generation coil 22 reaches a predetermined value, the field coil 26 is excited by a portion of the power generation output, and power generation thereafter occurs in a self-excited state. The battery 18 is charged by the output of the generator, and a load 24 consisting of electrical components is driven.

Next, when the vehicle requires braking force, the brake switch 19 is closed. That is, when, for example, the driver takes his/her foot off the accelerator pedal and decelerates the vehicle by engine braking, the brake switch 19 is closed in conjunction with the action of taking the foot off the accelerator pedal. Therefore, in this case as well, current flows from the battery 18 through the voltage regulator 25 to the field coil 26, and this generator generates electricity. At this time, if the switch 20 is closed as necessary, the output of the alternator 13 will be consumed by the load resistor 24. As the alternator 13 generates electricity, it absorbs work done from the outside as braking force, and this also causes the vehicle to decelerate. Therefore, it becomes possible to increase the braking force of the engine brake, and it becomes possible to obtain the braking force by effectively utilizing the alternator 13 installed in the vehicle.

〓Effects of the invention〓 As described above, the present invention operates the brake switch during braking to flow field current from the battery to the field coil of the charging generator, thereby operating the charging generator. This charging generator is rotated while absorbing the running energy of the vehicle, generates electricity with its generating coil, and consumes this generated output with a load resistance, thereby absorbing work done from the outside as braking force. It was designed to do so. Therefore, braking force can be obtained by effectively utilizing the charging generator installed in the vehicle to charge the battery and drive the electrical load.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a vehicle braking device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of an alternator constituting this braking device. In addition, in the symbols used in the drawings, 10...engine, 13...alternator (charging generator),
17...regulator switch, 18...battery, 19...brake switch, 20...switch, 21...load resistor, 26...field coil.

Claims (1)

[Claims for Utility Model Registration] A braking device for a vehicle equipped with a charging generator 13, which charges a battery 18 and drives an electrical load 24 using the output of the charging generator 13. In the braking system of the vehicle, the battery 18 and the field coil 2 of the charging generator 13 are connected to each other via the brake switch 19, which is closed in conjunction with the action of taking your foot off the accelerator pedal.
6, and connect the generator coil 22 of the charging generator 13 to the load resistor 21 via the switch 20, and close the brake switch 19 during braking to operate the charging generator 13. By absorbing the running energy of the vehicle, the charging generator 13 generates electricity with its generating coil 22, and this generated output is consumed by the load resistor 21, thereby controlling the work done from the outside. A vehicle braking device characterized by absorbing power as power.