A work vehicle includes an engine, a post-processing device, and a cooling fan. The engine is mounted on a front portion of a travelling machine body. The post-processing device purifies exhaust gas of the engine. The cooling fan water-cools the engine. The cooling fan is located in front of the engine. The cooling fan, the engine, and the post-processing device are covered with a hood. The hood includes a shield. The shield covers a lower section of the post-processing device and one side of the engine. The shield is a perforated plate including a plurality of holes.

There is provided an engine water-cooling device that can increase warming-up efficiency of an engine. The engine water-cooling device includes a thermostat housing that houses a thermostat. The thermostat housing is mounted to a front wall of a cylinder head in one side portion in a width direction of the cylinder head. A cooling water pump is mounted to a front wall of a cylinder block in a central portion in a width direction of the cylinder block. A bypass passage includes an intra-head bypass passage in the cylinder head, and the intra-head bypass passage includes a width-direction passage portion extending from a position behind the thermostat housing to a position behind and above the cooling water pump.

There is provided an engine water-cooling device that can increase warming-up efficiency of an engine. The engine water-cooling device includes a thermostat housing that houses a thermostat. The thermostat housing is mounted to a front wall of a cylinder head in one side portion in a width direction of the cylinder head. A cooling water pump is mounted to a front wall of a cylinder block in a central portion in a width direction of the cylinder block. A bypass passage includes an intra-head bypass passage in the cylinder head, and the intra-head bypass passage includes a width-direction passage portion extending from a position behind the thermostat housing to a position behind and above the cooling water pump.

This cooling fan device for a vehicle comprises: a fan shroud which is shaped as a box accommodating a radiator and/or a condenser, and which has an opening in the front side in the travel direction of the vehicle and a fan coupling surface in the rear side in the travel direction; at least two cooling fans disposed in the fan coupling surface, the cooling fans having center axes vertically separated from each other by a predetermined distance; and a shield rib extending downward from the top of the fan coupling surface, protruding toward the radiator and/or the condenser, and having a top end and a bottom end, the shield rib being provided to the fan coupling surface between the adjacent cooling fans. The top end and/or the bottom end of the shield rib have a cutout section allowing air to pass between the adjacent cooling fans.

This cooling fan device for a vehicle comprises: a fan shroud which is shaped as a box accommodating a radiator and/or a condenser, and which has an opening in the front side in the travel direction of the vehicle and a fan coupling surface in the rear side in the travel direction; at least two cooling fans disposed in the fan coupling surface, the cooling fans having center axes vertically separated from each other by a predetermined distance; and a shield rib extending downward from the top of the fan coupling surface, protruding toward the radiator and/or the condenser, and having a top end and a bottom end, the shield rib being provided to the fan coupling surface between the adjacent cooling fans. The top end and/or the bottom end of the shield rib have a cutout section allowing air to pass between the adjacent cooling fans.

The present disclosure relates to a vehicle cooling circuit for cooling a temperature-increasing device, in particular a battery, by means of a coolant conducted in a coolant circuit, wherein the coolant circuit has a heat exchanger configured as an evaporator via which the coolant circuit is coupled to a cooling medium circuit. In accordance with the present disclosure, the chiller is arranged downstream of the heat exchanger in the direction of flow of the coolant in the coolant circuit. Furthermore a bypass valve is arranged in the coolant line such that the coolant can be conducted fully or partially past the chiller.

The present disclosure relates to a vehicle cooling circuit for cooling a temperature-increasing device, in particular a battery, by means of a coolant conducted in a coolant circuit, wherein the coolant circuit has a heat exchanger configured as an evaporator via which the coolant circuit is coupled to a cooling medium circuit. In accordance with the present disclosure, the chiller is arranged downstream of the heat exchanger in the direction of flow of the coolant in the coolant circuit. Furthermore a bypass valve is arranged in the coolant line such that the coolant can be conducted fully or partially past the chiller.

The disclosure provides a novel cooling system for an internal combustion engine, which comprises a cooling fan, a first water radiator, an intercooler and a second water radiator, wherein the intercooler is positioned between the first water radiator and the second water radiator; the first water radiator is positioned at one end, close to an air inlet pipe, of an air inlet side of the intercooler, and the second water radiator is positioned at one end, close to an air outlet pipe, of an air outlet side of the intercooler; and the first water radiator, the intercooler and the second water radiator jointly form a heat exchange unit, and the cooling fan is provided on an outer side of the heat exchange unit. According to the disclosure, the heat exchange is more sufficient, the efficiency is higher, the water resistance is smaller, the cold air demand is less.

The disclosure provides a novel cooling system for an internal combustion engine, which comprises a cooling fan, a first water radiator, an intercooler and a second water radiator, wherein the intercooler is positioned between the first water radiator and the second water radiator; the first water radiator is positioned at one end, close to an air inlet pipe, of an air inlet side of the intercooler, and the second water radiator is positioned at one end, close to an air outlet pipe, of an air outlet side of the intercooler; and the first water radiator, the intercooler and the second water radiator jointly form a heat exchange unit, and the cooling fan is provided on an outer side of the heat exchange unit. According to the disclosure, the heat exchange is more sufficient, the efficiency is higher, the water resistance is smaller, the cold air demand is less.

A system for cooling an engine is provided. The system uses a rim driven fan having an electric motor in a frame of the fan to move air through a radiator toward the outside of the vehicle. The electric motor may have the rotor and the stator axially or radially aligned. The plurality of fan blades extends radially inward of a support which is formed integral with or attached to the rotor. Rim driven fans are also provided.