SU1390404A1 - Device for regulating rotational speed of engine crankshaft - Google Patents

Abstract

The invention allows improving the reliability of the device by simplifying its design. The device comprises a cylindrical body 4 with a lid 5 rigidly connected to it and a lid 6 movably mounted with a spring 7. Through lids 5 and 6 a rod 8 is passed, having a piston 9 that divides the hydraulic cylinder into two rod spaces 10 and 11. pivotally connected to the pull 3, and the other rigidly with the handle 12. The stem 8 has radial bores 13, 14, which are connected to an axial bore 15, in which a valve 16 is mounted with a pusher 17 connected by a button 18. 19 spring 20. The cavities 11 and 10 are filled with liquid. For from eneni rev crankshaft must act on the handle 12, the valve 16 is torn off from the valve seat. The cavities 10 and 11 are connected and as a result of the movement of the rod 8 with the piston 9, the liquid flows from one cavity to another. When the movement of the handle 12 is stopped, the button 18 is released, the spring 16 forces the valve 16 to sit in the seat. The flow of fluid from cavity 11 into cavity 10 and vice versa is stopped. T ha 3 remains stationary in a given mode. 2 Il. (L

Description

Yu Ch 9

/ / / / J 20 W 1 t

FIG. 2

oo

with

about

4: About 4

J

one

The invention relates to the field of control of internal combustion engines, in particular, to devices for controlling the frequency of rotation of the crankshaft of engines, preferably fire engines.

The aim of the invention is to improve the reliability of the device by simplifying its design.

FIG. 1 shows a fire engine with a device installed on it to control the frequency of rotation; in fig. 2 shows the node I in FIG. 1 (a device for controlling the rotational speed).

The engine 1 of the fire engine is connected to a device 2 for adjusting the rotational speed of the three.

The device 2 for adjusting the rotational speed of the crankshaft of the engine comprises a cylindrical body 4 with a cap 5 rigidly connected to it and a cap 6 movably mounted 6 with a spring 7. A rod 8 having a piston 9 that divides the hydraulic cylinder 2 into two rods is passed through caps 5 and 6 cavities 10 and 11; One end of the rod 8 is pivotally connected to the rod 3, and the other end is rigid with the handle 12. The rod 8 has radial holes 13 and 14 that are connected to the axial hole 15 in which the valve 16 is installed with the pusher 17 connected to button 18. Valve 16 to cross lu 19 pressed by a spring 20. The cavities 10 and 11 filled with liquid.

The device works as follows.

At idle speed of the engine 1, the handle 12 is in the position moved to the left.

To increase the number of revolutions of the engine crankshaft, the handle must be moved to the right. For this, pressing the button 18 moves the pusher 17 to the left. The valve 16 is detached from the saddle 19, overcoming the force of the spring 20, together with each other, the cavities 10 and 11. After that, the handle 12 is moved to the right to the desired value. The piston rod 8 with the piston 9 moves accordingly to the right. Fluid from the cavity 11 through the holes

14, 15 and 13 flows into the cavity 10.

0

five

0

When the handle 12 stops moving, the button 18 is released, the spring 16 forces the valve 16 to sit in its saddle 19. Fluid flow from the cavity 11 into the cavity 10 and vice versa is impossible, therefore the traction 3 remains stationary in the given mode;

To decrease the engine speed, the button 18 is pressed again, and the handle 12 is fed in the opposite direction.

The movable section 6 compensates for the loss of fluid and the temperature changes of the fluid volume in cavities 10 and 11.

Claims (1)

The device allows you to reliably with great accuracy and smoothly adjust the frequency of rotation of the engine crankshaft and accordingly adjust the operation of the fire engine pump. Invention Formula A device for controlling the frequency of rotation of the engine crankshaft, containing a control knob and placed between it and the fuel supply change lever a sealed cylindrical body with covers along its ends and placed inside it with a piston rod dividing the body into two fluid-filled bands and rods connecting the rod with the lever of change of fuel supply, different by simplifying the design, the stem is directly connected to the control handle, one of the bolts is spring-loaded and connected to the inner surface of the housing with the possibility of axial movement along the housing, and the axial cavity and radial holes interconnecting with each other are made in the stem the piston and interconnecting both cavities of the housing, with a spring-loaded pusher located inside the stem, one end of which is provided with a control button connected to it and the other end with a valve decomposition in the axial cavity of the rod and separating said cavity from one of the radial holes. U9.1