Patent ID: 7281528
Filing Date: 2007-10-16
Classification: F02B

Abstract:
1. A harmonic pulley system in combination with a supercharger mounted on an internal combustion engine including a crankshaft, the supercharger having a supercharger driveshaft powered by said harmonic pulley system to provide boost air to the internal combustion engine to drive the crankshaft, rotating the harmonic pulley system, said harmonic pulley system comprising: a harmonic balancer having a first ledge, a second ledge, an annular ring and a central aperture, a driveshaft pulley having an inner and outer region, said inner region including a first shoulder and presenting a pulley aperture aligned with said central aperture, said outer region including a second shoulder and providing an engaging surface, a crankshaft bolt received by the crankshaft through said pulley aperture and said central aperture wherein said driveshaft pulley is compressed towards said balancer, said first ledge receiving said first shoulder, said second ledge receiving said second shoulder, said annular ring positioned therebetween, alignment structure for aligning said driveshaft pulley with said harmonic balancer, and a drive belt encircling said engaging surface and said supercharger driveshaft whereby said supercharger is mechanically driven by said harmonic pulley system.