Patent ID: 6170453
Filing Date: 2001-01-09
Classification: F01M,F02B,F16F

Abstract:
A balance shaft housing for a vehicle engine having at least one rotating counterweight balance shaft disposed therein, comprising:at least one cavity formed in the housing for receipt of the at least one balance shaft;at least one air intake opening formed through the housing, said at least one air intake opening facing substantially upward and in communication with said first cavity;at least one air/fluid outlet opening formed through the housing, said at least one outlet opening facing substantially upward and in communication with said first cavity;whereby said at least one air intake opening is formed through the housing in a region where the direction of circumferential travel of said at least one balance shaft counterweight is substantially away from said at least one air intake opening; andwhereby said at least one outlet opening is formed through the housing in a region where the direction of circumferential travel of said at least one balance shaft counterweight is substantially toward said at least one outlet opening.