SU732563A2 - Distributing mechanism - Google Patents

Description

I

The invention relates to engine testing, in particular to distributing mechanisms with lifting valves,

According to the main author. St. N 620643 is known for distribution mechanism; it provides for a change in the law of movement of valves on a running engine. This mechanism is a multi-link drive from the crankshaft to the camshaft and is made in the form of series-connected shafts with hinges of unequal angular velocity, and one of the drive shafts mounted in the movable support connected to the driver is used as a control link. .

However, in the well-known mechanism, the range of adjustment of the operation of the valves is limited to certain limits due to the properties of the unequal 20 ANGLE speed hinges included in the multi-link actuator.

11 of the invention is to expand the valve control range.

This is achieved by the fact that the multilink drive additionally contains two toothed differentials connected respectively to the distribution and crankshafts, and the carrier is connected to the drivers of the regulator.

The drawing is a schematic diagram of the proposed mechanism.

The crankshaft 1 through a multilink drive consisting of gear differentials 2 and 3 1 shafts 4-8, connected to each other by hinges 9-12 of unequal angular velocity, is connected to the camshaft 14 interacting with valves 15. The shaft 6 is set to a movable support 16 associated with the driver of the regulator 17. Drove 18 and 19 of the gear differentials associated with the drivers 20 and 21 of the regulator.

The mechanism works as follows.

The rotation from the crankshaft 1, rotating at a constant angular velocity, is transmitted via a pair of bevel gears and gear differential 2 to the shaft 4, which also rotates at a constant angular velocity. The shaft 4 through the hinge 9 unequal angular velocity transmits the rotation of the shaft 5, thereby causing the rotation of the shaft with unequal angular velocity. Considering the property of unequal angular velocity hinges, a wap 6 connected to shaft 5 by hinge Yu also rotates at a non-uniform angular velocity.

Uneven rotation of shaft b through hinges 11 and 12, shafts 7 and 8 and toothed differential 3 is transmitted to camshaft 14. Movement of shaft 6 mounted in movable support 16 by means of regulator driver 17 changes the angle between axes of shafts 5 and 7 and axis shaft 6 and thereby alters the dependence between the normal speeds of these shafts, providing regulation of the law of movement of the valves 15.

The expansion of the valve control range is as follows.

The rotation of the carrier 18 and 19 of the gear differential, the potentials 2 and S, using the adjuster leads 20 and 21, changes the angular position of the shaft 4 relative to the crankshaft 1 and the shaft 8 relative to the camshaft 14, extending the range of the gas distribution.

In this case, the following options are possible. Adjusting the valve timing for any movements of the shaft 5:

turning only drove 18 differential 2;

turning only drove 19 differential 3;

18 and drove 19 on

turn drove the same angle;

18 and drove 19 at the turn drove

different (in size and direction) angles.

These options greatly expand the range of valve control performed by the distribution mechanism.

Claims (1)

Invention Formula Distribution mechanism auth. St. NO 620643, characterized in that, in order to expand the valve adjustment range, the multi-link actuator further comprises two toothed differentials that are associated respectively with distribution and coils shafts, with the carriers of differentials tied to the adjuster leads. / 7G 777