An engine room heat exhausting structure configured to discharge heat from an engine room, is provided, which includes an engine room accommodating an engine with cylinders lined up in a front-and-rear direction of a vehicle, a wheelhouse provided outside the engine room in a vehicle width direction, an exhaust emission control device disposed between the engine and the wheelhouse, a wheelhouse liner configured to protect an inner wall of the wheelhouse, a discharging part provided rearward of the exhaust emission control device and configured to discharge into the wheelhouse a part of air cooled the exhaust emission control device, and a guiding part provided to the wheelhouse liner and configured to guide the air discharged into the wheel house to underneath the vehicle in a rear part of the wheelhouse.

An engine room heat exhausting structure configured to discharge heat from an engine room, is provided, which includes an engine room accommodating an engine with cylinders lined up in a front-and-rear direction of a vehicle, a wheelhouse provided outside the engine room in a vehicle width direction, an exhaust emission control device disposed between the engine and the wheelhouse, a wheelhouse liner configured to protect an inner wall of the wheelhouse, a discharging part provided rearward of the exhaust emission control device and configured to discharge into the wheelhouse a part of air cooled the exhaust emission control device, and a guiding part provided to the wheelhouse liner and configured to guide the air discharged into the wheel house to underneath the vehicle in a rear part of the wheelhouse.

A straddled vehicle including a radiator, a radiator fan disposed behind the radiator and configured to generate air passing through the radiator and flowing rearward, a fan cover disposed behind the radiator fan and including a lateral blowing port configured to blow out sidewards the air flowing rearward from the radiator, a side cover covering the radiator laterally and having an opening formed therein, an inner panel disposed between the side cover and the radiator, to thereby define an accommodation space between the inner panel and the side cover, and an electrical component disposed in the accommodation space. The inner panel includes a slope that is located rearward of the radiator, slants with respect to aright-and-left direction of the straddled vehicle, is configured to lead the air blown out from the lateral blowing port to the opening in the side cover, and divides the accommodation space.

A work machine includes: a partition member provided with an intake port and an exhaust port and forming an engine room; an engine disposed in the engine room; a cooling fan disposed on an intake port side of the engine in the engine room; an exhaust pipe discharging exhaust gas from the engine; and an exhaust duct disposed in the engine room and having an inflow port into which air from the cooling fan flows, and an outflow port. At least a portion of the exhaust duct is disposed above the engine and has a facing surface facing the engine and a through-hole provided in the facing surface. At least a portion of the exhaust pipe is disposed in the through-hole. A gap is formed between an outer surface of the exhaust pipe and an inner surface of the through-hole.

A method of providing active flow control for an aircraft includes cooling a liquid coolant in a heat exchanger by circulating a cooling airflow through the heat exchanger, and providing fluid communication between the cooling airflow and a boundary layer flow of at least one flight control surface of the aircraft. The cooling airflow affects the boundary layer flow of the flight control surface(s) to provide active flow control. A method of cooling an engine core of an engine assembly includes circulating a cooling fluid through the engine core, and cooling the cooling fluid with a cooling airflow used to provide active flow control to a flight control surface of the aircraft. An active flow control system for an aircraft is also discussed.

A method of providing active flow control for an aircraft includes cooling a liquid coolant in a heat exchanger by circulating a cooling airflow through the heat exchanger, and providing fluid communication between the cooling airflow and a boundary layer flow of at least one flight control surface of the aircraft. The cooling airflow affects the boundary layer flow of the flight control surface(s) to provide active flow control. A method of cooling an engine core of an engine assembly includes circulating a cooling fluid through the engine core, and cooling the cooling fluid with a cooling airflow used to provide active flow control to a flight control surface of the aircraft. An active flow control system for an aircraft is also discussed.

A liquid-cooled heat dissipation device is disclosed, comprising a main body, a centrifugal pump, an inlet pipe, an outlet pipe, a centrifugal fan and a motor. The main body comprises a shaft hole, liquid flow channels and airflow channels. The centrifugal pump guides a cooling liquid through the inlet pipe, main body and outlet pipe. The centrifugal fan guides air into the main body axially from the shaft hole. After passing through the centrifugal fan, the air forms centrifugal airflows and leaves the body radially through the airflow channels. With an extended flow path of the cooling liquid and the radial flow of the centrifugal airflow provided by the present invention, the temperature of the cooling liquid may be quickly reduced and the cooling effect may be improved. Thus, the structure is compact, small, light-weight, easy-to-assemble.

A saddle-riding vehicle includes a radiator in front of an engine of the saddle-riding vehicle and on one lateral side of the vehicle in a vehicle widthwise direction with respect to a center line in the vehicle widthwise direction. The radiator includes: a radiator body that allows coolant of the engine to flow through the radiator body; a radiator fan at a rear face of the radiator body; and a fan cover that covers the radiator fan from a rear of the radiator fan to guide exhaust air from the radiator to the one lateral side in the vehicle widthwise direction.

A saddle-riding vehicle includes a radiator in front of an engine of the saddle-riding vehicle and on one lateral side of the vehicle in a vehicle widthwise direction with respect to a center line in the vehicle widthwise direction. The radiator includes: a radiator body that allows coolant of the engine to flow through the radiator body; a radiator fan at a rear face of the radiator body; and a fan cover that covers the radiator fan from a rear of the radiator fan to guide exhaust air from the radiator to the one lateral side in the vehicle widthwise direction.

A cleaning apparatus of a work machine for cleaning debris from a screen mounted to a door of an engine cooling assembly. The cleaning apparatus includes a duct extending along the screen and along a first side of the door. The duct includes a duct end located at the door. A vacuum assembly is configured to draw a vacuum through the duct, wherein the vacuum assembly is detachably connected with the duct end. An alignment mechanism includes an aligner that extends from the duct to a frame of the work machine. The alignment mechanism aligns the duct end with the vacuum assembly to provide a seal between the duct and the vacuum.