JPS5875404A - Controller for deceleration brake - Google Patents

Abstract

PURPOSE:To obtain a damping force required by changing over a retarder, which converts mechanical energy generated through the travelling of a car into electric energy, and an exhaust brake limiting flow rate flowing in the exhaust pipe of an engine by means of a manual switch. CONSTITUTION:A retarder 7 is formed by a magnetic rotor 5 axially mounted to the crankshaft between an engine and a transmission, an excitation coil 10 fastened to a flywheel housing 6 and a short-circuit ring 15. One end of the coil 10 is connected to a contact 17, an air tank 18 is connected to an air cylinder 21 through solenoid valves 19, 20, and the butterfly valve 24 of an exhaust pipe 23 is set up to the piston 22 of the cylinder 21. A contact 25 is connected to the solenoid valve 19, and a power supply 28 is connected to the solenoid valve 20 through a switch 27 operated when a foot is released from an accelerator pedal 26. A rotary conductor 29 forming the manual switch 30 is peripherally contacted with the contacts 25, 17, and a power supply 31 is connected to the base point of the conductor 29. Accordingly, damping force required can be obtained in response to conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for controlling braking force obtained by a plurality of deceleration brakes attached to a vehicle.

In general, large vehicles such as trucks and trucks are unable to drive down long plank roads with just the engine brake and the service brake, and the braking force of the service brake may decrease, so the brake is used as an auxiliary brake in addition to the service brake. A deceleration brake is also used.

Conventionally, this deceleration brake has been implemented by installing pulp in the middle of the engine's exhaust pipe to limit the flow of flow into the exhaust pipe and applying braking force to the engine, and by converting the mechanical energy generated by the running of the vehicle into electrical energy. Electromagnetic retarders that apply braking force to vehicles are widely known.

However, as the engine becomes smaller and the total displacement decreases, the braking force of the exhaust brake decreases relatively, so the braking force of the exhaust brake alone becomes insufficient as the braking force of the deceleration brake. Furthermore, if the retarder is used as the only deceleration brake, the device will be large and the manufacturing cost will be high.

The present invention solves the above problems by combining multiple deceleration brakes even when the engine is downsized. It is an object of the present invention to provide a control device for a deceleration brake that can obtain power.

The present invention provides a control device for a deceleration brake for an automobile, which includes the retarder and the exhaust brake, and a driver's seat is provided with a hand switch for switching the retarder and the exhaust brake to operate separately or simultaneously. It is characterized by

The above-mentioned retarder is generated between a magnetic rotor that is attached to the crankshaft of the engine, an excitation coil that is fixed to the flywheel housing and that applies magnetic force to the rotor, and this rotor due to the rotation of this rotor. It is preferable to include a retarder unit including a short-circuiting ring that short-circuits tML generated due to changes in magnetic lines of force.

The present invention will be explained in more detail below with reference to the drawings.

FIG. 1 shows an example of the structure of a retarder implementing the present invention. A flywheel 5 pivotally attached to a crankshaft 3 between the engine 1 and the transmission 2 is made of a magnetic material. A retarder unit 7 is attached to the flywheel housing 6.

FIG. 2 is an enlarged structural view of the cross section indicated by AA' in FIG. 1. Teeth 9 are formed around the flywheel 5 and act electromagnetically on the retarder unit 7.

Several retarder units 7 (two in this example) are attached to the flywheel housing 6. Each retarder unit 7 has an excitation coil 10 wound around a core 13.
has been done. 14 is an insulating winding frame. The tip of each core 13 opposes the teeth 9 and acts electromagnetically. The core 1.3K is fitted with a conductor shorting ring 15.

In such a device, when the excitation coil IO is excited by an electric current while the crankshaft 30 is rotating, the core 13 is magnetized and lines of magnetic force are generated between the core 13 and the teeth 9 of the flywheel 5. These teeth 9 are rotated by the rotation of the crankshaft 3, so that the core 1
3, this magnetic field line changes and a current is generated in the short circuit 1115. This current turns into heat in the short circuit ring 15.

Apply braking force to the flywheel 5.

FIG. 3 is a block diagram of an apparatus according to an embodiment of the present invention. One end of the plurality of excitation coils IO is connected to the contact 17. 18F
It is an air tank and is connected to an air cylinder 21 via a solenoid valve 19 and a connector. A butterfly valve 24 provided in the exhaust pipe 23 of the engine 1 shown in the first part is attached to the piston 22 of the air cylinder 21. A contact point 6 is connected to the electromagnetic valve 19 . Further, the electromagnetic valve 20 is connected to a power source 4 via a switch n that is turned on when the accelerator pedal 26 is released.

The contacts 25 and 17 are provided with a rotating conductor 4 that circumferentially contacts both contacts, thereby forming a manual switch (9).

A power source 31 is located at the base point 29a of this rotating conductor 4! #Continued.

FIG. 4 is a plan view of this manual switch 30.

The base 4.29a of the rotating conductor 29 has an insulating knob 3.
2 is attached, and this insulating knob 32 is connected to the rotating groove body 29.
It rotates in conjunction with. This insulating knob 32 and the rotating conductor 2
9, a display panel 33 is provided, and a scale is provided according to the rotational position of the insulating knob blade. This manual switch 32 is installed at the same position as other instruments provided in the driver's seat.

With such a configuration, the insulating knob 32 can be operated manually or with a moving switch.
When it is set to the scale "0", the rotary groove integral 4 is in the position shown in FIG. 3, so no voltage is applied to the contacts 17 and 25. At this time, only the engine brake acts as a deceleration brake.

Next, when the edge knob 32 is set to the scale "1", the rotating conductor 29 moves to the position shown in the 40th position, so that the contact point δ
voltage is applied to the solenoid valve 19. This opens the solenoid valve 19. If the foot is released from the accelerator pedal 26 at this time, the switch n is turned on, the solenoid valve 20 is also opened, the piston n moves in the direction of the arrow shown by the solid line, and the fly valve 24 opens the exhaust pipe 23.
A braking force is applied to the engine 1 by limiting the flow rate.

Sixth, when the insulating knob 32 is set to the scale "2", the rotating conductor 4 separates from the contact 25 and comes into contact with the contact 17.

As a result, only the contact 17 is applied, and current flows through the excitation coil 10, applying the braking force of the retarder to the vehicle.

At this time, the solenoid valve 19 is closed, so the piston 22 moves in the direction of the arrow shown by the broken line, and the braking force of the exhaust brake is eliminated.

Further, when the insulating knob 32 is set to the scale "3", it contacts both the contacts 25 and 17 of the rotating conductor 29Fi at the same time, and the exhaust brake and +1 tarda act together.

This allows V
If the insulating knob 32 is set to "5" on the scale, a large braking force can be obtained in the C, allowing the rider to safely exit the vehicle. In addition, when driving on a flat road with few bumps, the insulating knob 32 can be set to the scale "0.1" to allow safe driving without applying unnecessary braking force.

In the above example, when the scale is "1", only the exhaust pre-key works, and when the scale is "2", only the retarder works, but when the scale is "1", only the retarder works, and when the scale is "2", only the retarder works. It may be configured such that only the exhaust brake is activated when the value is "2".

As described above, according to the present invention, by configuring the exhaust brake used as a deceleration brake and the electromagnetic retarder so that they can operate separately or simultaneously, even if the engine is downsized, road conditions and driving The necessary braking force as a deceleration brake can be obtained depending on the conditions, loading conditions, etc., and from the viewpoint of traffic safety, it does not cause fatigue to the driver, and even if one deceleration brake fails, other deceleration brakes can be used. The braking force has an excellent effect in guaranteeing safety.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of the configuration of a retarder implementing the present invention. FIG. 2 is a cross-sectional view of the A-A' section. FIG. 3 is a configuration diagram of an apparatus according to an embodiment of the present invention. FIG. 4 is a plan view of the manual switch as well. 1...Engine, 2...Transmission, 3...Crankshaft. 5... Flywheel, 6... Flywheel no.
Uzing, 7... Retarder unit 1, 9... Teeth, lO... Excitation coil, 13... Core, 14...
... Insulation winding frame, 15 ... Burning ring, 17 ... Contact, 1
8... Air tank, 19... Solenoid valve, 21... Air cylinder, 22... Piston, 23... Exhaust pipe,
24...Butterfly valve, 25...Contact, 26.
...accelerator pedal, n...switch, 28...battery, 29...rotating conductor, 29a...base point, book)...
・Manual switch, Sochi, 31...Electric cooling, 32...Insulation knob,...Display panel. Patent Applicant Hino Motors Co., Ltd. Agent Patent Attorney Naotaka Ide L-A/ Figure 1-16

Claims (2)

[Claims] (1) Mechanical work caused by running a vehicle is handled by electricians 4
An automobile equipped with a retarder that converts the fuel into 7x-G and gives braking force to the vehicle, and an exhaust brake that attaches pulp in the middle of the engine's exhaust pipe to limit the flow of flow into the exhaust pipe and gives braking force to the engine. 1. A deceleration brake control device, characterized in that a manual switch is provided in a driver's seat for switching the retarder and the exhaust brake so that they operate separately or simultaneously. (2) The retarder consists of a magnetic rotor that is pivoted on the crankshaft between the engine and the transmission, an excitation coil that is fixed to the flywheel housing and applies the rotor VCa force, and one rotation of this rotor. A control device for a deceleration brake according to claim 1, further comprising a retarder unit including a braking device that short-circuits a current generated due to a change in magnetic lines of force between the rotor and the rotor.