SU1384448A2 - Apparatus for controlling vehicle equipped with diesel engine - Google Patents

Abstract

This invention relates to railway transport. The purpose of the invention is to improve the performance characteristics by preventing re-pinching of the wheels and providing a controlled acceleration rate of the vehicle. The device contains speed-driven sensors 1 and boxing 2, a thrust force positioner 4, a hydraulic booster consisting of a spool bushing 5 and a spool 6 equipped with a spring 8 and a follower piston 11 connected kinematically to the rod 10, speed positioner 14, pressure regulator 17 connected by means of hydraulic booster and pressure channel

Description

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speed sensor 1, positioner 20, kinematically connected to driver 22 for spring pulling on hydraulic actuator spool, and switch 23 connected to pressure regulator 17 and positioner 20, When the device is operated by a signal from a boxing sensor 2 and (or ) the switch 23, the pressure regulator I7 changes the oil pressure in the cavity of the hydraulic booster spool, and the positioner 20 changes the pressure of the spring on the same spool. This is achieved by adjusting the rotational frequency of the diesel engine and the thrust force. 2 Il.

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The invention relates to railway transport and relates to the construction of vehicle control devices, automatically. stabilizing the set speed.

The purpose of the invention is to improve performance by preventing re-pinching of the wheels and providing a controlled acceleration rate of the vehicle.

Fig. 1 is a schematic diagram of the device; figure 2 - graphics traction characteristics of the vehicle.

The device contains speed sensors 1 and boxing 2, driven by wheelset 3, a thrust force positioner 4, a hydraulic booster composed of a spool bushing 5 and a spool 6 connected to a leash 7 fitted with a pre-tightened spring 8 and kinematically connected by rocker arms. 9 with a 10 follow piston rod 1I. The piston rod 12 is kinematically associated with a diesel speed regulator (not shown).

A hydraulic speed relay 13 is kinematically connected with the hydraulic booster. The device also has a speed positioner 14.

The speed sensor 1 is connected to the hydraulic booster and the speed positioner by mains equipped with valves 15 and 16.

The pressure regulator 17 is connected by line 18 to cavity A of the spool 6 hydraulic booster, and line 19 to the pressure channel of speed sensor 1.

The positioner 20 to change the thrust of the spring ha 8 of the hydraulic amplifier 21 21 kinematically connects the thread 5

com 22, placed on the stem of the spool 6 hydraulic booster.

The pressure controller 17 and the positioner 20 are connected to a box-mounted sensor 2 and a switch 23. The communication is electrically, hydraulically, and the like. (in the drawing, links 24-27 are shown conventionally).

With the valves 15 and 16 closed and the initial position of the switch 23, the device operates similarly to the well-known device. The resulting vehicle performance is shown by lines I-VIII in FIG. 2.

With the valves 15 and 16 open and the initial position of the switch 23, the diesel engine's rotational speed and vehicle traction force vary smoothly along the line O, (Fig.2) to the thrust point G of the external traction characteristic Og.

When translating switch 23 into the first operating position, the pressure regulator 17 is activated by the action of a signal received via communication 26, reducing the pressure in cavity A of the spool 6 of the hydraulic booster. Simultaneously, under the action of a signal from the switch 23 via the link 27, the positioner 20 is actuated, increasing with the aid of the rocker 21 and the leash 22 against the spring 8.

Due to this, when the vehicle accelerates for each speed of its movement, the spool 6 will take a position to the right than with the initial position of the switch 23. A part of the oil is drained from the cavity E of the piston 1 1 through a slit in the spool bushing 5, the piston 11 will take the position to the left, and the engine speed is relatively reduced. T trak characteristics

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when the vehicle accelerates, it will take the position Oj, due to which the intensity of its acceleration will be reduced,

When translating switch 23 to the second and subsequent working positions, the oil pressure in cavity A of spool 6 decreases more and more, and spring 8 increases for the same speeds of the vehicle, as a result of which the traction characteristic takes position 0, etc. At the same time, the acceleration rate of the vehicle will decrease even more 3Ha.

When translating the switch 23 in the opposite direction, the oil pressure in the cavity A of the spool 6 increases sequentially, and the pressure of the spring 8 decreases, and the characteristics of the vehicle occupy the corresponding positions 0, Oj, 0. The acceleration intensity of the vehicle increases accordingly. .

When the wheels do not adhere to the rails at the moment of starting the blocking, the blocking sensor 2 generates a signal arriving via connections 24 and 25 to the pressure regulator 17 and the positioner 20. The pressure regulator 17 reduces the oil pressure in the cavity A of the spool 6, and the positioner 20 tightens the spring 8, so that the spool 6 moves to the right, opening the gap

in the spool bushing 5. A portion of the oil is drained from the cavity E of the piston II and the rotational speed of the diesel decreases. As soon as the blocking is stopped, the signal from the blocking sensor to the pressure regulator 17 and the positioner 20 disappears, which respectively leave the pressure in cavity A of spool 6 and, at a higher level, the pressure of spring 8. As a result, the force vehicle thrust is reduced to a certain level, eliminating re-blocking of the wheels. At the same time, the level of traction force, which excludes wheel blocking, is provided in the entire range of vehicle speeds.

Claims (1)

Invention Formula A device for driving a vehicle with a diesel engine according to aut. St. No. 7,27500, about tl-i: more so that, in order to improve performance by preventing the wheels from re-pinching and providing adjustable acceleration of the vehicle, it is equipped with a pressure regulator connected to the pipeline connecting the speed sensor and the hydraulic booster, a positioner for adjusting the throttling of the spring of the hydraulic booster and the associated bobbin sensor. .