Fan shroud for vehicle mounted heat converter

摘要

A fan shroud is provided for a cooling fan that is partially offset relative to a core portion of a vehicle mounted heat converter. The fan shroud has an arcuate portion that is offset from the core portion. The fan shroud also has an arcuate portion and a connection portion that are not offset from the core portion. The fan shroud has an overlap ratio defined as a ratio of the portion of the fan blades covered by the fan shroud in the cooling fan to the axial depth (front end to rear end) of blades. The overlap ratio at the arcuate portion is set smaller than the overlap ratio at the arcuate portion and the connection portion.