Abstract: A system for delivering air to vehicle engines generally includes at least one air cleaner configurable to receive either conditioned air or unconditioned air and a conduit assembly coupled to the air cleaner for delivering cleaned air from the air cleaner to the vehicle engine.

Abstract: An indoor unit of an air conditioner includes a filter member for trapping dust; a dust removing mechanism for removing the dust from the filter member; and a dust container for containing the dust removed from the filter member. The indoor unit further includes a container lifting/lowering mechanism for lifting/lowering the dust container relative to a casing; and a drive unit capable of alternatively performing removal operation by engaging with a dust removing mechanism to drive the dust removing mechanism, and lifting/lowering operation by engaging with a container lifting/lowering mechanism to drive the container lifting/lowering mechanism.