CONTROL SYSTEM FOR INTERAXLE DIFFERENTIAL WITH THREE PLANETARY GEAR SETS Russian patent published in 2013 - IPC B60K17/346 B60W10/12 

FIELD: transport.

SUBSTANCE: invention relates to control system for interaxle differential of transfer gear. The system contains gear clutch (27) hydraulically driven by piston (28) installed in three-section working chamber (29). In this chamber together with piston (28) auxiliary piston (30) of lager diameter is located which forms moving rest for piston (28). Working chamber front section located before piston (28) and center section located between pistons (28) and (30) are connected by hydraulic lines with on/off hydraulic control valve (33) for successive communication with working fluid pressure source. The rear section located after piston (30) is connected by hydraulic line with on/off valve (36) which connects this section alternatively with working fluid pressure source and with drain. Control valve (33) and valve (36) are operated by electric magnets (37) and (38) connected to three-position switch (39) which in the first position connects electric magnet (37) of control valve operation with electric current source, in the second position connects electric magnet (38) of valve (36) operation with electric current source, and in the third position disconnects electric magnets from electric current source. When electric magnets are switched off the front section of working chamber communicates via control valve (33) with working fluid pressure source, and central and rear sections communicate via control valve and valve with drain.

EFFECT: convenient remote control of interaxle differential with three planetary gear sets.

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