Provided is a construction machine capable of collecting foreign matter into a dust collection pocket and preventing the foreign matter from being scattered. The construction machine includes a cooler, an air passage forming member including a curved section, a dust-proof filter, a cooling fan generating a normal wind for cooling and a reverse wind opposite thereto, a dust collection pocket, and a turning member. The dust collection pocket has an opening and collects foreign matter at a position downstream of the inner wall surface of the outer corner of the curved section. The turning member is turned about a turning axis by the normal wind and the reverse wind, thereby being moved between a close position to close the opening and an open position to open the opening.

An engine cooling system for a rotorcraft includes an engine having an engine cooling circuit, a hydraulic pump powered by the engine to pump hydraulic fluid, and a hydraulic circuit in fluid communication with the hydraulic pump and the engine cooling circuit, the hydraulic circuit including at least one hydraulic-powered component. The hydraulic pump is adapted to pump the hydraulic fluid through both the hydraulic circuit and the engine cooling circuit, thereby cooling the engine.

A connection structure of a turbocharger and an intercooler for a vehicle is disclosed. The turbocharger is configured to compress intake air using exhaust gas and includes an outlet for discharging the compressed air, and the intercooler includes an inlet connected to the outlet of the turbocharger and is configured to receive the compressed air through the inlet. An inserting portion having an external diameter smaller than an external diameter of the outlet is formed at an end portion of the outlet facing the intercooler, and is inserted into the inlet of the intercooler. An connecting hose encloses external circumferences of the outlet and the inlet such that the outlet and the inlet are connected to each other through the connecting hose.

A connection structure of a turbocharger and an intercooler for a vehicle is disclosed. The turbocharger is configured to compress intake air using exhaust gas and includes an outlet for discharging the compressed air, and the intercooler includes an inlet connected to the outlet of the turbocharger and is configured to receive the compressed air through the inlet. An inserting portion having an external diameter smaller than an external diameter of the outlet is formed at an end portion of the outlet facing the intercooler, and is inserted into the inlet of the intercooler. An connecting hose encloses external circumferences of the outlet and the inlet such that the outlet and the inlet are connected to each other through the connecting hose.

Provided is a work machine capable of notifying that maintenance is necessary due to continuation of clogging in a cooling device or decrease in cooling performance. A wheel loader 1 including a radiator 31 and an oil cooler 32 comprises a controller 5, 5A configured to determine a clogging continuation state of the radiator 31 or the oil cooler 32. The controller 5, 5A determines whether clogging is occurring in the radiator 31 or the oil cooler 32 based on outside air temperature AW and cooling water temperature CW or hydraulic oil temperature HW, determines whether the clogging continues based on a clogging occurrence ratio R1, R2 while an engine 30 is operating, and outputs a notification command signal for providing the alarm buzzer 61 and the user management system 62 with a command to notify that maintenance is necessary when it is determined that the clogging continues.

A genset includes an enclosure and a deflector assembly. The enclosure defines an at least partially enclosed space and a ventilation air opening that fluidly couples the enclosed space with an environment surrounding the enclosure. The deflector assembly includes a deflector disposed within the enclosed space and an angle driver. The angle driver is structured to adjust an angular position of the deflector relative to the ventilation air opening to minimize exported noise.

An air-cooled engine includes: a cooling fan configured to rotate in conjunction with an engine rotation shaft; a fan housing covering the cooling fan; a screen having a disk shape and configured to rotate integrally with the cooling fan so as to shred foreign matters; and a screen cover having a plurality of openings defined therein and attached to the fan housing so as to suppress entry, into the fan housing, of foreign matters drawn by the cooling fan. The screen cover has a polygonal outer shape when viewed from an axial direction of the engine rotation shaft.

An air-cooled engine includes: a cooling fan configured to rotate in conjunction with an engine rotation shaft; a fan housing covering the cooling fan; a screen having a disk shape and configured to rotate integrally with the cooling fan so as to shred foreign matters; and a screen cover having a plurality of openings defined therein and attached to the fan housing so as to suppress entry, into the fan housing, of foreign matters drawn by the cooling fan. The screen cover has a polygonal outer shape when viewed from an axial direction of the engine rotation shaft.

The fan assembly provided with a fan ring, including a first leg and a second leg, may be arranged with a shroud that may include a first sidewall, a second sidewall, a third sidewall, a first ring, a second ring, and a third ring. An air passage may be formed between a distal end of the first leg and the third ring, the second ring and the first leg, the second leg and the second sidewall, and a distal end of the first leg and the first ring. The air passage may be configured to improve acoustic performance and air flow efficiency.

An agricultural equipment air screen cleaning assembly having a frame having an airflow opening having a non-circular outer perimeter, a screen mounted to the frame within the airflow opening and extending to the non-circular outer perimeter, a motor, and a suction wand operatively connected to the motor and located on an upstream side of the screen. The suction wand is rotatably connected about a rotation axis at a central region of the screen, and includes: at least one distal end that is movable in a radial direction with respect to the rotation axis to follow the non-circular outer perimeter as the suction wand rotates about the rotation axis, one or more inlet openings facing the screen, and an internal suction flow path in fluid connection with the one or more inlet openings, the suction flow path extending from a manifold to the distal end of the suction wand.