A construction machine includes: a partition member partitioning an accommodation space in an engine compartment into a main chamber and an intake chamber while having an inter-chamber opening; a fan disposed in the main chamber to generate cooling air flowing through an air intake opening, the intake chamber, the inter-chamber opening, and the main chamber in this order by sucking air in the engine compartment in a suction direction; a duct joined to an outer wall to enclose the air intake opening and including an inner peripheral surface enclosing a duct passage leading to the air intake opening and an outer peripheral surface. The duct extends in a duct extension direction different from the suction direction of the fan, disposed in the intake chamber to define a duct surrounding space around the outer peripheral surface of the duct.

A method for an engine is presented, wherein during a first condition, pressurized gas from an engine coolant degas bottle to an ejector positioned in a vent line coupled to a fuel vapor canister; and the contents of the fuel vapor canister are purged to an engine intake. The ejector may draw atmospheric air into the fuel vapor canister, thus enabling purging of the fuel vapor canister even when an engine intake vacuum is below a threshold. In this way, boosted engines and other engines configured to operate with reduced intake vacuum may execute canister purging events that are independent of engine intake pressure.

A method for an engine is presented, wherein during a first condition, pressurized gas from an engine coolant degas bottle to an ejector positioned in a vent line coupled to a fuel vapor canister; and the contents of the fuel vapor canister are purged to an engine intake. The ejector may draw atmospheric air into the fuel vapor canister, thus enabling purging of the fuel vapor canister even when an engine intake vacuum is below a threshold. In this way, boosted engines and other engines configured to operate with reduced intake vacuum may execute canister purging events that are independent of engine intake pressure.

A cooling system for an agricultural vehicle includes a housing configured to support one or more cooling components, a debris conduit extending from the housing of the cooling system, a suction fan configured to rotate to apply negative airflow, and a valve configured to move between an open position in which the debris conduit is fluidly coupled to the suction fan and a closed position in which the debris conduit is isolated from the suction fan.

A cooling system for an agricultural vehicle includes a housing configured to support one or more cooling components, a debris conduit extending from the housing of the cooling system, a suction fan configured to rotate to apply negative airflow, and a valve configured to move between an open position in which the debris conduit is fluidly coupled to the suction fan and a closed position in which the debris conduit is isolated from the suction fan.

The present teachings provide for a radiator fan assembly including a fan, a shroud, a flapper door opening, and a flapper door. The shroud defines a fan opening aligned with the fan through which airflow from the fan passes. The flapper door opening is defined by the shroud. The flapper door is pivotally mounted at the flapper door opening. The flapper door includes a main body and an air guide extending from the main body.

In a straddle type vehicle in which a radiator is covered with a cover member, and an air guide duct for guiding hot air from the radiator to an outside of the vehicle is formed integral with the cover member, the hot air is restrained from staying within the cover member even in the case where the air guide duct of the cover member covering the radiator must be opened face-to-face with only a portion of a core of the radiator. A ventilation control member for controlling cooling air passing through the core of the radiator so as to flow toward an inner opening of the air guide duct is provided in the vicinity of the radiator.

A work vehicle includes a hood, an engine, a radiator, an air cleaner, and a condenser. The hood covers an engine compartment located on a front portion of a traveling body. The engine is a drive source. The radiator supplies a coolant to the engine. The air cleaner takes in outside air and supplies the air to the engine. The condenser cools a refrigerant. In front of the radiator, the air cleaner and the condenser are disposed one above the other. The condenser is withdrawable in the left and right direction.

A work vehicle includes a hood, an engine, a radiator, an air cleaner, and a condenser. The hood covers an engine compartment located on a front portion of a traveling body. The engine is a drive source. The radiator supplies a coolant to the engine. The air cleaner takes in outside air and supplies the air to the engine. The condenser cools a refrigerant. In front of the radiator, the air cleaner and the condenser are disposed one above the other. The condenser is withdrawable in the left and right direction.

A rotatingly driven filter element for filtering incoming air is to be arranged in a machine part upstream of an intake chamber of a cooling system or of a combustion air distribution device of an internal combustion engine of a self-propelled working machine. The filter element has a rim area with a circumferentially extending section provided with air guiding elements oriented toward and projecting into the intake chamber. The rim area, when the filter element is arranged in the machine part, is positioned at a minimal spacing relative to the machine part and an air gap is formed between the rim area and the machine part. The air guiding elements guide purified inflow air out of the intake chamber into a region of the air gap to effect a sealing action of the air gap.