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.

An engine device including an exhaust gas purification device above cylinder head through a support pedestal. The support pedestal has a flat portion on which the exhaust gas purification device is mounted, and a plurality of legs which protrude downward from the flat portion and are fixed to the cylinder head. The flat portion and the leg portions are formed integrally. Portions between the legs are each formed in an arch-shape.

An engine device including an exhaust gas purification device above cylinder head through a support pedestal. The support pedestal has a flat portion on which the exhaust gas purification device is mounted, and a plurality of legs which protrude downward from the flat portion and are fixed to the cylinder head. The flat portion and the leg portions are formed integrally. Portions between the legs are each formed in an arch-shape.

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.

An electrical generation system for a vehicle includes a vehicle having a generator for producing electric current. The vehicle has a cavity having a fan and a radiator. The radiator is in fluid communication with the generator to allow a temperature of the generator to be controlled. An air inlet passage extends through a wall of the vehicle and is configured to direct air from outside the vehicle toward an inlet side of the radiator to provide increased static pressure of the air to the inlet side of the radiator compared to an ambient pressure of the air when the vehicle is in motion.

An electrical generation system for a vehicle includes a vehicle having a generator for producing electric current. The vehicle has a cavity having a fan and a radiator. The radiator is in fluid communication with the generator to allow a temperature of the generator to be controlled. An air inlet passage extends through a wall of the vehicle and is configured to direct air from outside the vehicle toward an inlet side of the radiator to provide increased static pressure of the air to the inlet side of the radiator compared to an ambient pressure of the air when the vehicle is in motion.

A radiator assembly in which numerous fins of a cooling element extending between two coolant channels of the cooling element are divided into at least two different cooling zone, a ventilator of the radiator assembly at least partially covers a first cooling zone of the at least two different cooling zones with respect to a direction extending from the ventilator module toward the cooling element, and a gap width of a gap between two adjacent fins in the first cooling zone is greater than that in a second cooling zone of the at least two different cooling zones.

A radiator assembly in which numerous fins of a cooling element extending between two coolant channels of the cooling element are divided into at least two different cooling zone, a ventilator of the radiator assembly at least partially covers a first cooling zone of the at least two different cooling zones with respect to a direction extending from the ventilator module toward the cooling element, and a gap width of a gap between two adjacent fins in the first cooling zone is greater than that in a second cooling zone of the at least two different cooling zones.