SU107120A1 - Hydromechanical transmission - Google Patents

Description

Hydromechanical gears, mainly for automobiles, with a torque converter and friction scenes connected to its turbine wheel, one for switching on mechanical low gear and reverse gear and the other for switching on non-transmissions are known. The torque converter with a manual transmission is connected by concentrically spaced shafts. The disadvantage of such programs is e-. with significant wear of the mechanical gearbox due to the wear of clutch disc wear products in the crankcase and the larger dimensions.

The hydromechanical transmission according to the invention is free from these disadvantages. The essence of the invention is that the driving disks of the clutches are connected to Ker (in the main with the turbine wheel, and driven by concentric shafts are connected with a mechanical transmission.

FIG. 1 and 2 depict two patterns of non-transmission.

Two friction clutches 1 and 2 are placed in the common circuits in the common crankcase with the torque converter.

In scheme 7 (Fig. D), the first stage links the turbine Ko.ieco e with the turbine shaft 4, and the second directly links the crankshaft to the engine. - | with output wai (OM.) xfobki, i.e., locks the torque converter.

In the scheme // (Fig. 2), the first clutch also connects the turbine wheel 3 with the turbine va.1o 4, and the second connects the turbine wheel with the output shaft 5 of the nonredach box.

In osta. device and operation of the boxes according to the scheme / c // ana.pogichng.

On the Ba.iy 6 reactor, engraved with a yen motion, wheels are placed. 7, 8 reactor with a conventional free-wheeling mechanism 9.

Inside the fi shaft of the reactor, one of the turbines passes through v. 1, having a hub 10 at one end connected to friction clutch discs and a pinion // at the other end which engages with gears 12 of the intermediate shaft 20 of the gearbox.

Inside the hollow shaft 4 of the turbine, there is an output shaft 5 having a hub J3 connected to the friction clutch discs at the end, at the other end ii.ei {-: automatic pressure regulator / i and flange 15 for fastening the cardan shaft. All gears box helical.

Along the spiral splines of the output shaft 5, the movable gear 16 moves, the extreme positions of which correspond to the " Forward and " Reverse. On a separate axis, the parasitic gear 77 is reversing.

Reversing shifting is also possible using a moving carriage (instead of a moving gear). In this case, the mechanical part of the box contains only permanent gears.

The scheme includes the “front gear pump 18 (with internal gearing) driven through KO; ieco pump from the engine, and the rear gear pump 19 driven from the output shaft via an intermediate shaft and a gear wheel of a turbine shaft. The operation of both pumps is regulated by a reduction valve.

Automation can be performed by any of the known single-stage automatic switching schemes; besides her, it is desirable to provide a forced gear shift.

The machine should provide gear changes with virtually no interruption of the power flow from the engine to the driving wheels of the car due to some slip of the friction clutches at the moment of switching.

The proposed transfer can be applied both for light vehicles and buses.

The friction clutches are closed by the pressure of the fluid in the torque converter (the pressure of the thread). The opening of the scenes takes place under the action. the pressure of the fluid coming from the automaton through the channels, compacted by spring-loaded rings, into the internal cavity of the clutches. This pressure is somewhat higher than the make-up pressure.

For supplying (or discharging) fluid to the torque converter and to the clutches, the downstream shafts (turbine shaft) and direct gear have side and internal drillings.

The work of the transfer is as follows

 The neutral position (neutral) is depleted by an automatic machine but the driver’s command. In this case, both friction clutches are off. In both clutches, the fluid is under pressure greater than the pressure in the torque converter. For coasting, the control lever is set to the neutral position.

The downshift is switched on automatically when the car starts off, by setting the lever to the position "automatic or downward." In this case, the automaton connects the cable that feeds the clutch / longjack1, to its transmission with a slurry and the clutch, the action of fluid pressure in the torque converter closes the clutch of the lowering gear.

Switching off the “lowering (transition to“ neutral ”) occurs via filling the automatic clutch and / liquid under pressure exceeding the pressure of the torque converter.,

 The transmission right is switched on either by a driver forcibly or automatically. In this case, the automaton connects the channel feeding the stage 2 with the drain, and the piston, under the effect of the fluid pressure in the transformer, will turn on the acceleration.

If you do not set “down” to “direct” (by machine or press. BUT), the machine delivers, a liquid under pressure to the scenes “downshift transmission, and a cap. That feeds the clutch“ direct transmission ”connects to the drain.

Switching to the rear wheel is done by mechanical transfer of the movable gear. Engine braking and engine starting

tatel towing - on gears

PREMLET and 3 about b) e tehni

Hydromechanical transmission, mainly for cars, with a torque converter and connected with. its turbine wheel has friction clutches, one for mechanical lows and reverse, and

others for direct transmission, using concentric shafts for connecting to a gearbox, characterized in that, in order to reduce wear and achieve compactness of the device, clutch drive disks are connected directly to the turbine wheel, and the followers are connected by co-centric and mechanical transmission shafts.

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