Air inlet and cleaner arrangement for work vehicle

摘要

An air inlet arrangement is provided for a work vehicle that has an auxiliary bay external to the engine compartment. The auxiliary bay can have a bay cover in part forming a step panel for the operator. The auxiliary bay contains an air cleaner coupled to an air inlet via air ducting that extends through the engine compartment. In the case of work vehicles having an aftertreatment device within the engine compartment for example, the air duct extends through the engine compartment between a side wall of the engine cover and the engine and/or the aftertreatment device. The air duct can at least in part be formed as a unitary part of the engine cover with multiple tube segments of differing cross-sections. At least the segment passing between the engine cover and the aftertreatment device can be oblong with a major axis essentially parallel to the engine cover side wall.

主权项

1. A work vehicle having a chassis supporting an engine and an aftertreatment device, the engine and the aftertreatment device being contained in an engine compartment defined by an engine cover, the work vehicle comprising:
an auxiliary bay external to the engine compartment; an air cleaner disposed within the auxiliary bay; and an air duct coupling the air cleaner to an air inlet opening through the engine cover; wherein the air duct is extends into the engine compartment at least within an interior space defined between the engine cover and at least one of the engine and the aftertreatment device; and wherein the air duct has a rigid section including:
a first tube segment having a first cross-section;a second tube segment extending from the first tube segment and having a second cross-section different than the first cross-section; anda third tube segment extending from the second tube segment and having a third cross-section defining a hose mounting flange.