FIELD: mechanical engineering.
SUBSTANCE: internal combustion engine has crankshaft, auxiliary unit, electric motor/generator (12) and belt drive system (10). Belt drive system (10) has crankshaft pulley (24), auxiliary unit pulley, electric motor/generator pulley (14), belt tensioner (26), belt tensioner pulley (28) and power transmission belt(3) passing over crankshaft pulley (24), auxiliary unit pulley, electric motor/generator pulley (14) and belt tensioner pulley (28). Belt tensioner pulley (28) is engageable with belt(30) in (C/D) section. Tensioner (26) shifts asymmetrically in direction of tension of power transmission belt (30).
EFFECT: considerable optimization of service characteristics; low cost; simplified construction.
10 cl, 11 dwg
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