Patent ID: 6192871
Filing Date: 2001-02-27
Classification: F01N,F02B

Abstract:
A compact supercharger having a volute, a compressor, and a drive portion, the drive portion comprising:a drive gear having teeth and an outer circumference and a driven gear having teeth and an outer circumference, the driven gear having a shaft adapted to connect to the compressor;drive gear bearing races and driven gear bearing races; anda drive gear having teeth and an outer circumference and a driven gear having teeth and an outer circumference, the driven gear having a shaft adapted to connect to the compressor;drive gear bearing races and driven gear bearing races; anda gear case having an inner chamber with a back wall, a front wall, perimeter walls, drive gear bearing mounting recesses to receive the drive gear bearing races, driven gear bearing mounting recesses to receive the driven gear bearing races, at least one oil inlet in the gear case to receive engine oil, and oil channels in communication with the at least one oil inlet and the driven gear bearing races, and an oil outlet on the gear case; anda splitter located near a bottom of the gear case in the vicinity of the oil outlet, the splitter having leading edges in close proximity to the outer circumference of the drive gear, and passageway communicating with the oil outlet, wherein the outer circumference of the drive gear located in the gear case is in close proximity to at least portions of the perimeter walls of the inner chamber and the drive gear has a larger circumference than the driven gear and the drive gear is located in the inner chamber of the gear case below the driven gear, wherein during rotation of the drive gear, oil will be expelled against the perimeter wall portion, travel down the perimeter walls and exit through the oil outlet, thereby preventing windage of the oil in the gear case and assisting in power draining of oil from the gear case.