8. Transmissions

8.1. A mechanical transmission

THE GENERAL DATA

The transmission of type ВЕ is placed in картере from an aluminium alloy and attached to the left end of the engine. It consists of a transmission, the main transfer and differential. The transmission has five synchronised transfers for advance and one transfer of a backing. Carter of a transmission consists their three parts made of moulding under pressure from an alloy of aluminium. On cars two types of a mechanical transmission are established. Both types of a transmission are similar and work as follows.

The twisting moment from a cranked shaft of the engine is transferred through coupling to a primary shaft of a transmission on which the coupling disk is established. The primary shaft is established on ball bearings. Further the twisting moment is transferred to the secondary shaft which right end is established on the roller bearing, and left – on ball. From a secondary shaft the twisting moment is transferred to differential and to power shafts. In neutral position a primary shaft and gear wheels of a secondary shaft rotate freely and do not transfer a twisting moment to differential.

Synchronisation of 1 and 2 transfers occurs on secondary to a shaft, and synchronisation 3, 4 and 5 transfers – on primary to a shaft. Synchronizers New Process are applied. Pig-iron plugs have on basic surfaces молибденовое a covering (plugs of 5 transfers are made of bronze).

The gear change mechanism is put in action by the lever located on a floor of the car. The gear change mechanism moves a corresponding plug which moves the synchronizer and provides rigid connection of a gear wheel of a secondary shaft with secondary shaft.

The differential – classical type, has two satellites and two semiaxial gear wheels. The differential case is made of spheroidal pig-iron. Rings of sliding of satellites are made of the polyamide sated with dioxide of molybdenum.