A mass balancer unit for an engine

Abstract

ABSTRACT A MASS BALANCER UNIT FOR AN ENGINE The present disclosure relates to mass balancer shafts, and envisages a mass balancer unit (100) for an engine. The mass balancer unit (100) comprises a housing (101), defined by a lower casing (104) and an upper casing (102), sealably immersed in an oil sump. Both casings have a pair of grooves configured on opposite edges to mount at least one supporting bearing (115) thereon. Pressurized oil is communicated from the crankcase (10) to the bearings (115). The unit further comprises a pair of mass balancer shafts (105, 106) rotatable in opposite directions to counter-balance the weight of the crankcase (10). Each shaft has a truncated cylindrical configuration counter-weight, and a pair of arms (112) extending from the counter-weight (109) and configured to be received in the bearings (115). Openings are configured on the upper casing (102) to hurl away oil seeped inside the housing (101)during lubrication of the bearings (115).