Abstract: An automotive heat exchanging system has a heat exchanger comprising a condenser and a radiator, an electric fan located in the front of an engine and an automatic transmission. A shroud is attached to and covers peripheral portions of the electric fan and the heat exchanger to prevent air from bypassing the shutter. The shroud forms an air passage inside of it for allowing airflow through the heat exchanger to flow toward the automatic transmission. A shutter is disposed in the shroud and attached at a periphery of the shroud. The shutter is controlled to open and close the air passage by a controller based on oil temperature.

Abstract: Various embodiments of reduced-size vehicles such as all-terrain vehicles (ATVs) and utility vehicles (UVs) are disclosed herein. In at least some embodiments, the vehicles include frames that are wider near the front and rear sections of the vehicles than within the mid-sections of the vehicles. This, in combination with the use of shock-absorbers that are substantially vertically oriented, allows for the opening-up of large interior cavities within the front and rear sections of the vehicles within which can be positioned large front and rear internal compartments that can provide storage/carrying capacity as well as added buoyancy for the vehicle, among other things. Also, in at least some embodiments, the vehicles can include special cooling and/or exhaust systems having components that are positioned substantially within the mid-sections of the vehicles, thus further increasing the amounts of space available for the cavities/compartments within the front and rear sections of the vehicles.

Abstract: A cooling system is provided for a battery unit and a motor control unit of a hybrid vehicle. Preferred cooling systems can have a compact structure and can efficiently cool the battery unit and the motor control unit mounted in a vehicle using air, thus ensuring stable operation of the battery unit and the motor control unit and maximizing utilization of space in the vehicle.

Abstract: The present invention provides a hybrid industrial vehicle which prevents the battery from water splash. A hybrid industrial vehicle has a combination of an engine and a motor as a drive source for load handling or traveling, a battery as a power source for the motor and a counterweight. The battery is disposed on the counterweight and is located above the center of the counterweight as measured in the vertical direction between the highest and the lowest ends thereof.

Abstract: An apparatus for simulating the sound of a conventionally powered gasoline or diesel powered engine in an electrically powered passenger vehicle having an electric drive motor operatively coupled to one or more of the vehicle's wheels for rotating the vehicle's wheels to propel the vehicle, includes a rotary air mover and sound generator for supplying cooling air to the electric drive motor and for generating a variable sound having at least one variable sound parameter, a motor for driving the rotary air mover and sound generator; and a controller for controlling the rotary air mover and sound generator, the controller controlling the rotary air mover and sound generator to change the variable parameter of sound generated by the rotary air mover and sound generator such that the sound parameter of sound generated by the rotary air mover and sound generator matches a selected one of the vehicle's performance parameters.

Abstract: An integrated heat exchanger and engine mount for a snowmobile that reinforces the snowmobile chassis is disclosed. The heat exchanger is formed with an internal passage through which a vehicle fluid may be circulated and cooled. The heat exchanger is also formed with increased rigidity to strengthen the chassis and support an engine mount.

Abstract: A cooling system for vehicles having a modular roof-mounted, low profile compartment and at least one radiator core mounted for horizontal extension but at a slight angle to the roof as well as being spaced above the roof with fans arranged alongside each radiator core for drawing air into the compartment and across the cores, then upwardly and away from the cores and compartment; and coolant lines extend between the cores and different components to be cooled in the vehicle. The radiator cores may be arranged to extend lengthwise along opposite sides of the roof or may extend transversely, and a battery system for a hybrid engine may also be mounted alongside the radiator compartment and in the same manner as described with respect to the radiator cores, the battery compartment being representative of other utility components that may be similarly mounted in low profile compartments.

Abstract: A cooling structure for a continuous variation transmission system of an all-terrain vehicle which includes a radiator mounted at a front end of the vehicle and under a front body cover, a hood enclosing the radiator, a gearbox having an inlet and an outlet, the inlet being connected with an inlet conduit for drawing outside cool air into the gearbox, the outlet being connected with an exhaust conduit for discharging hot air from the gearbox, wherein the inlet conduit has an inlet end mounted between the hood and the front body cover and shielded by the hood and the front body cover, whereby the cooling structure can effectively prevent water, dirt and dust from entering the gearbox and are simple in construction and easy to assemble and maintain.

Abstract: A cooling structure for a working vehicle with a transmission disposed rearwardly and downwardly of a driver's seat and having a hydrostatic transmission, and an air-cooled engine disposed rearwardly of the transmission. The cooling structure comprising a fan for cooling the engine and a fan for cooling the transmission mounted on a rotary shaft operatively connecting the transmission with an output shaft of the air-cooled engine, the fans being configured such that air flows generated by the fans move from adjacent the transmission toward the engine; an oil cooler for cooling fluid supplied to the hydrostatic transmission, the oil cooler being disposed between the fan for cooling the engine and the fan for cooling the transmission, and disposed to face each of the fans; and an air guiding plate disposed at a position higher than the oil cooler for guiding air to regions of the fans.

Abstract: A cooling structure for a continuous variation transmission system of an all-terrain vehicle which includes a radiator mounted at a front end of the vehicle and under a front body cover, a hood enclosing the radiator, a gearbox having an inlet and an outlet, the inlet being connected with an inlet conduit for drawing outside cool air into the gearbox, the outlet being connected with an exhaust conduit for discharging hot air from the gearbox, wherein the inlet conduit has an inlet end mounted between the hood and the front body cover and shielded by the hood and the front body cover, whereby the cooling structure can effectively prevent water, dirt and dust from entering the gearbox and are simple in construction and easy to assemble and maintain.

Abstract: A system for removing heat from the engine compartment (9) of a heavy duty truck. A first ventilating system removes heat from the radiator. It is isolated from a second ventilating system that removes heat from the engine compartment. The first system takes heat from the radiator through a plenum by centrifugal squirrel cage blowers, and is directs it out to ambient by ductwork. The second system draws ambient air generally from back to front of the engine compartment, preferably by cowl induction, without the use of ram air from the vicinity of the radiator. The exits of the two systems are into a slip stream of the heavy duty truck, and the exit of the second ventilating system is into a slip stream of the first, to scavenge air out of the engine compartment.

Abstract: A motorcycle that effectively cools vehicle parts without a special cooling duct has a body frame, an engine and an intake system that supplies air to the engine. A parts cooling system makes air diverge from the intake system, and introduces the diverging air to vehicle parts such as electrical parts and an alternator.

Abstract: The duct comprises the upper member and the lower member, which are formed separately and assembled integrally by being attached to one another. There is provided the seal member to interconnect the opening at the lower member and the intercooler, which is pressed against the upper face of the intercooler. The front side of the lower member is supported at the shroud panel, and the rear side of the upper panel is supported at the cowl panel. Thus, the rear attachment portion is detached earlier than the front attachment portion at the pedestrian's hit. Accordingly, the duct can be split surely and the engine hood can be allowed to be properly deformed without being prevented, so that the protection of the head of pedestrians can be attained properly.

Abstract: A working machine is constituted so as to mount a guard cover hinge, a radiator duct, a canopy right support, a hood catch and the right end part of a seat stand on a radiator support. The working machine further comprises a mounting column provided on the opposite side of the radiator support so as to mount a hood hinge, a left side panel, the left end part of the seat stand and a muffler cover thereon. According to such a structure, a mounting member shared by a plurality of constituting members can be used also as a positioning support between members, and the workability in assembling can be improved.

Abstract: A motor cooling structure for efficiently cooling a driving motor in a power unit case of the electric vehicle includes a transmission case cover having an air filter mounted on a side surface of a transmission case adjacent to a fan, and a ventilation gap defined between a rear portion of the transmission case cover and the transmission case. The transmission case cover includes a cooling air inlet facing the ventilation gap. When the fan is rotated in synchronism with a crankshaft, an outside cooling air is introduced from the cooling air inlet into the transmission case cover and then passes through the air filter to enter the transmission case, thereby forcibly cooling a transmission. Thereafter, a part of the cooling air is discharged from a central air outlet to the outside of the transmission case, and the remaining cooling air is drawn to the driven portion of the transmission.

Abstract: A motorcycle has a rear wheel brake lever provided on a handlebar and a rear wheel brake provided on a rear wheel. A rear wheel brake cable is connected to the rear wheel brake lever and the rear wheel brake. A main frame extends toward the rear part from the front part of the motorcycle. The main frame is disposed at a center in a vehicle width direction and extends toward the rear part of the vehicle body on the upper side of an engine unit. The rear wheel brake cable is laid toward the rear part from the front part of the vehicle body along the main frame. The transmitting loss of brake operation is thereby reduced and swing of the rear wheel brake cable is prevented.

Abstract: A straddle-type vehicle provided with a transmission air intake passage for sending air into a transmission case housing a continuously variable transmission prevents an increase in vehicle width and prevents sand or the like from entering the air intake passage by covering the front side of the air intake passage. The transmission air intake passage extends upward from the transmission case on an outer side in a vehicle width direction of a main frame. A rearward cover covers the main frame and extends outward in the vehicle width direction to cover the rear side of the transmission air intake passage. A forward cover is curved forward from an edge outside in the vehicle width direction of a right leg shield part constructing the rearward cover and covers the transmission air intake passage from a front side.

Abstract: A bottom portion of a fuel tank of a motorcycle is prevented from being heated by engine heat to avoid an increase in fuel temperature. The fuel tank is behind and above the engine and a seat is behind the fuel tank. The seat includes a seat frame attached to the body frame and extending rearward, and a seat cushion mounted on the seat frame. The seat frame has an air introduction opening formed behind the seat cushion, and defines an air passage for guiding air introduced from the air introduction opening toward a bottom wall of the fuel tank.

Abstract: A hydraulic drive vehicle comprises a vehicle frame, a bonnet, a prime mover, a hydraulic transaxle, a seat, a reservoir tank, and a cooling fan and a cooling duct. The bonnet is supported on one of front and rear portions of the vehicle frame, and provided therein with a first space. The prime mover is disposed in the first space. The hydraulic transaxle is driven by the prime mover. The seat is supported on the other of the front and rear portions of the vehicle frame, and is provided therebelow with a second space. The reservoir tank is fluidly connected to the hydraulic transaxle. The cooling fan is driven by the prime mover. The cooling duct is disposed in the second space. The cooling fan and the reservoir tank are disposed in the cooling duct so that the cooling fan cools the reservoir tank. A hydraulic pump for driving the hydraulic transaxle is disposed in the cooling duct so as to be cooled by the cooling fan.

Abstract: To inhibit an electric pump from generating heat with a simple structure when the electric pump is used in a cooling system. A two-wheeled fuel-cell vehicle is provided with a cooling system to cool a fuel cell. A first radiator and a second radiator are provided to cool the cooling water warmed by the fuel cell with a flow of air. A cooling fan functions so as to ventilate the cooling fins of the first radiator and the cooling fans function so as to ventilate the cooling fins of the second radiator. An electric pump is disposed in the middle of a pipe line for the circulation of the cooling water. The electric pump is disposed at a position where the electric pump can catch the flow of air created by the cooling fan.

Abstract: A scooter type motorcycle capable of improving cooling efficiency of brake calipers includes a vehicle body cover, covering a rear wheel brake device, is formed with a drive-induced airflow introducing port. A drive-induced airflow guiding duct, supported with vehicle body frames, for guiding drive-induced airflow from the drive-induced airflow introducing port to the brake calipers of the rear wheel brake device, is provided. The drive-induced airflow guiding duct has an inflow port formed at its one end for the drive-induced airflow entering at the drive-induced airflow introducing port to flow in. An airflow delivery port is formed at its other end and opening in the vicinity of the brake calipers for delivering the drive-induced airflow, introduced through the inflow port, to the brake calipers.

Abstract: An arrangement of intake and exhaust system components in a fuel cell powered vehicle makes it easier to install those components on a vehicle body. The arrangement also improves power generating efficiency, and eases maintenance. The arrangement, which includes a fuel cell, intake system components such as an air cleaner, compressor, intercooler, and humidifier, and exhaust system components including an exhaust pipe which exhausts emission gas from the fuel cell through an exhaust port, is such that the intake system components and the exhaust system components are both located on one side of the fuel cell, for example behind the fuel cell. The air cleaner, compressor, intercooler, humidifier and fuel cell may be substantially linearly sequentially arranged, to reduce air flow resistance. The pipes between the air cleaner and the compressor, and between the intercooler and the humidifier are short.

Abstract: An all terrain vehicle has a rear structure in which a exhaust duct extends rearward from a rear portion of a belt transmission and is detachably supported by a vehicle body frame, the exhaust duct is composed of a plurality of constituent members coupled to one another along an exhaust direction of the exhaust air flowing in the exhaust duct, the constituent members having a distance from one another are formed from a high rigidity material maintaining its own shape thereof, and the constituent members are detachably coupled to one another through a coupling member formed of an elastic material.

Abstract: A radiator module for commercial motor vehicles, in particular for agricultural tractors, has a support plate fixed to the chassis and at least one coolant radiator fixed to the support plate. The radiator has a radiator block and two coolant tanks oriented at opposite ends of the block with one tank adjacent the support plate and one spaced away form the support plate. In order to increase the cooling performance of the radiator module despite keeping the installation space above the support plate constant it is proposed that the coolant tank near the plate is constructed from two mutually complementing tank parts. The first tank part is assigned to the radiator block and has an encircling flange for pressure sealed attachment of the coolant radiator on the support plate. A second tank part is assigned to the support plate. By dividing the coolant tank into two parts, one on the radiator block and one on the support plate the effective heat sink area of the coolant radiator can be substantially increased.

Abstract: A front end structure of a vehicle surrounding heat exchangers with ducts to thereby improve the heat exchangers in cooling ability, that is, a front end structure of a vehicle provided with heat exchangers positioned in an engine compartment in which an engine is mounted and exchanging heat between air and a heat medium, wherein the heat exchangers are surrounded by duct members sticking out to the vehicle front side, preventing hot air in the engine compartment from reaching the front end sides of the heat exchangers, and guiding air present at the vehicle front side to the heat exchangers and wherein among the duct members, a bottom duct positioned at the vehicle bottom side is formed with first through holes running through the vehicle in the up-down direction.

Abstract: A vehicular battery mounting structure for mounting a battery pack above a floor panel while securing a simple structure of cooling passageways. This battery mounting structure is suitably adopted in a vehicle that is equipped with a first battery pack and a second battery pack that has stricter requirements regarding the temperature of the service environment. The first battery pack is mounted in an engine compartment. The second battery pack is disposed below a seat that is mounted on a floor panel as a seat for a vehicle occupant other than a driver. Specifically, a plurality of battery cells of the second battery pack are stacked in the longitudinal direction relative to the vehicle. Cooling passageways are provided between the battery cells, and conduct air supplied by a sirocco fan from a center side to an outer side in the direction of width of the vehicle.

Abstract: A hydraulic drive vehicle comprises a vehicle frame, a bonnet, a prime mover, a hydraulic transaxle, a seat, a reservoir tank, and a cooling fan and a cooling duct. The bonnet is supported on one of front and rear portions of the vehicle frame, and provided therein with a first space. The prime mover is disposed in the first space. The hydraulic transaxle is driven by the prime mover. The seat is supported on the other of the front and rear portions of the vehicle frame, and is provided therebelow with a second space. The reservoir tank is fluidly connected to the hydraulic transaxle. The cooling fan is driven by the prime mover. The cooling duct is disposed in the second space. The cooling fan and the reservoir tank are disposed in the cooling duct so that the cooling fan cools the reservoir tank. A hydraulic pump for driving the hydraulic transaxle is disposed in the cooling duct so as to be cooled by the cooling fan.

Abstract: An exhaust system of an engine, wherein the intake system faces the cooling fan placed at the front of the vehicle while the exhaust system faces the dash panel placed at the rear of the vehicle, is provided with air from the cooling fan and air from the outside due to the vehicle motion through a deflector and space formed below a portion of the exhaust system, thereby preventing heat damage of the engine exhaust system and deterioration of the appearance of the vehicle, and minimizing the air drag coefficient of the vehicle.

Abstract: A cooling enclosure is mounted to the frame of a grass mowing machine adjacent the engine cooling fan of an internal combustion engine. The engine cooling fan draws ambient air across the controllers and batteries in the cooling enclosure. The cooling enclosure includes a one piece molded plastic structure that holds and supports batteries and electronic controllers at positions spaced from its bottom surfaces. One or more removable or hinged panels cover the top of the structure.

Abstract: A utility vehicle is provided which has a CVT drive unit. A housing for the drive unit provides an enclosure for the CVT drive components and defines an air flow path. An inlet port associated with the CVT housing includes a fan assembly which provides a source for filtered ambient air flow into the CVT housing. An outlet port associated with the CVT housing provides an exit for the air flow path and equalizes pressure within the enclosure. The interior of the housing is pressurized with ambient air in order to cool the CVT components therein. The pressurized air also creates an air curtain which prevents moisture and debris from intruding into the housing. Preferably the fan is powered separately from the engine of the utility vehicle to ensure positive air flow into the CVT housing even when the engine is in idle mode.

Abstract: A molded metal insert and plastic part integrally formed therewith form an assembly wherein the insert is provided with anti-rotation, die-cast teeth. The insert is adapted to attach and fix the plastic part to a vehicle structure in combination with a threaded fastener. The insert includes a cylindrical metal body having inner and outer diameters and upper and lower end portions. The inner diameter defines a passageway sized to allow an externally threaded portion of the fastener to extend through the passage and below the lower end portion for threaded attachment to the vehicle structure. The upper end portion provides a seat for a head of the fastener. The anti-rotation metal teeth are integrally molded with and extend radially outwardly from the cylindrical metal body between the inner and outer diameters and between the upper and lower end portions wherein the upper and lower end portions protect the teeth. A die-casting mold for forming the insert is also provided.

Abstract: An integrated heat exchanger and engine mount for a snowmobile that reinforces the snowmobile chassis is disclosed. The heat exchanger is formed with an internal passage through which a vehicle fluid may be circulated and cooled. The heat exchanger is also formed with increased rigidity to strengthen the chassis and support an engine mount.

Abstract: The present invention relates to all terrain vehicles having at least a pair of laterally spaced apart seating surfaces. More particularly, the present invention relates to trail compliant side-by-side all terrain vehicles.

Abstract: The present invention relates to all terrain vehicles having at least a pair of laterally spaced apart seating surfaces. More particularly, the present invention relates to trail compliant side-by-side all terrain vehicles.

Abstract: The invention provides a method of reducing or eliminating the problem of hydroplaning when driving an automobile on a highway that has a buildup of water due to a rainfall. Basically the device consists of an air duct outlet located in front of each wheel in such a manner that a downward high pressure air flow provided by an air compressor driven by the main engine will disperse water in front of the wheels, thereby reducing or eliminating the problem of hydroplaning. A grilled front air intake, directed and configured to exclude an air compressor will also reduce or eliminate the problem of hydroplaning.

Abstract: A removable cooling fan kit for a motorcycle includes a base plate, at least one fan and an on-off switch. The base plate is secured adjacent the cylinder heads of the motorcycle engine. Each fan is positioned and attached to the base plate such that a stream of air from the fan blows past a side of the cylinder head. An opening is formed through the base plate, adjacent each fan to allow air to be drawn by each fan. Preferably, an on-off switch controls power to the at least one fan. The at least one fan is powered by the battery of the motorcycle.

Abstract: There are provided an engine disposed between right and left front side frames provided in an engine room, a radiator disposed obliquely such that its upper end is located forward in a disposition space in front of the engine, an air cleaner disposed above the radiator, and an electronic control device disposed in a space above the radiator and below the air cleaner. Accordingly, there can be provided a disposition structure of engine functional components for a vehicle which can properly dispose the electronic control device with respective to the radiator and air cleaner, preventing the temperature of the electronic control device from increasing.

Abstract: In a front end structure of a vehicle, a heat exchanger is arranged at a position lower than a bumper reinforcement member, so a position of an engine hood is lowered. Electric auxiliary devices such as a radar, electronic control units for lights, and an air cleaner are arranged at a position higher than the bumper reinforcement member or at the rear of the bumper reinforcement member. By this arrangement, the electric auxiliary devices are arranged at a position which is less likely to be affected by the bumper reinforcement member in a case of light frontal crush.

Abstract: A four-wheeled buggy includes a shortened air intake path so that intake efficiency is improved. An air cleaner is disposed in a space surrounded on the left and right by a rear fender below a seat, and a space surrounded by the air cleaner, the seat and left and right portions of the rear fender is formed as an intake air path. A cutaway portion is provided on a side face of the rear fender connecting to a seat rail and is formed as an intake opening communicating outwardly sidewardly such that it is communicated with the intake air path on the inner side. External air taken in from the intake opening enters the intake path and is immediately introduced into the inside of the air cleaner through an intake duct.

Abstract: A drive belt cooling structure for an offroad vehicle including an internal combustion engine. The engine has at least one cylinder, a piston positioned in the cylinder, and a crankshaft. The transmission includes a transmission chamber defined by a transmission case. A primary shaft of the transmission is driven by the crankshaft. A main shaft of the transmission is offset from the primary shaft and is driven by the primary shaft through a drive belt. The main shaft is arranged to drive at least one of the wheels. The primary shaft is supported by a support bracket, the support bracket being connected to the crankcase. An air inlet is adapted to permit entry of cooling air into the transmission chamber, and an air guide is configured to direct a flow of cooling air into the transmission chamber along the drive belt, the air guide being connected to the support bracket.

Abstract: An integrated fan shroud air intake system for a tractor provides an air passage through a fan shroud positioned between the radiator and internal combustion engine. The air passage has an intake and an outlet laterally displaced from the intake. An air filter is mounted transversely to the longitudinal axis of the tractor, with a dirty air inlet plugged directly into the outlet of the air passage.

Abstract: An aerodynamically constructed covering part for the underside of a motor vehicle, particularly a passenger car, is provided with an inflow opening and an air guiding element arranged adjacent to the inflow opening. In the driving operation, a partial flow of the cooling air flowing through between the covering part and the roadway is guided through the inflow opening and the air guiding element situated at least in areas above the covering part to an assembly and/or a chassis part situated above. In order to simplify the fastening between the covering part and the air guiding element, it is provided that the air guiding element is inserted into a receiving opening of the covering part and is separably connected with the covering part by way of slide-detent connections.

Abstract: At least one vent hole is provided on an aerodynamically constructed covering part for the underside of a motor vehicle. A partial flow of the cold fresh air flows through the vent hole between the covering part and the roadway and is guided to a space which is situated above and accommodates assemblies and/or chassis parts. At least one suction device is provided on the covering part for carrying away the heated air situated in the space disposed above in the direction of the roadway.

Abstract: A battery mounting structure is provided for an electric vehicle which is operated using a motor as a driving source in which running wind is effectively utilized for cooling the batteries, and the cooling efficiency of a battery unit is enhanced. The electric vehicle is provided with a body frame where a front frame member extends from a head pipe diagonally downward toward the rear of the vehicle body. The battery mounting structure is attached to the front frame member of the body frame so that the cooling face of the battery unit is directly exposed to running wind. The battery mounting structure includes cooling fins which confront the running wind, and is covered by a body cover having louvered air intakes and air exhausts. The louvers direct the running wind smoothly to the cooling fins and protect the battery mounting structure.

Abstract: A saddle-ride type vehicle includes a body frame, an engine arranged in a forward manner of a rear cushion, and an air cleaner connected to the engine through an intake passage. The air cleaner is arranged in a rearward manner of a connection of an upper end of the rear cushion and the body frame, and the connection is arranged substantially just below the intake passage.

Abstract: An engine air intake system includes an engine air intake device and a plenum cooling compartment that is separate from the engine compartment by a baffle. A fan draws outside ambient air into the plenum cooling compartment and out of the plenum cooling area via a heat exchanger. The cooling compartment is designed such that a distance between the heat exchanger and the baffle provides a gap from which the engine air intake device removes ambient air as a source for engine air. An option is provide for the system to withdraw outside ambient air from an area external to the plenum cooling compartment in high debris environments.

Abstract: An air cleaner device is provided for a scooter-type vehicle which can prevent foreign substances from entering an air intake port of an air cleaner even when the air cleaner is arranged at a position out of protection of the vehicle body cover. An air intake port cover covers the air intake port of the air cleaner and also covers a cooling air suction port of the power unit. The leakage of suction sound from the cooling air suction port can be prevented simultaneously.

Abstract: In a construction machine comprising an engine, hydraulic device, and heat exchanger for cooling the engine and the hydraulic device, which are all disposed in an upper rotating body of the construction machine, there is formed a maintenance passage along which maintenance portions of the engine and the hydraulic device are disposed so as to cross the upper rotating body. Exhaust air from cooling fans for sending air to the heat exchanger is discharged to the exterior of the machine body through the passage. Thus, the passage is utilized as an exhaust air passage for the heat exchanger, whereby it is possible to provide a construction machine improved in cooling efficiency for the heat exchanger.

Abstract: An arrangement of radiators (2–6) for a utility vehicle, e.g., an agricultural tractor, comprising three or more cooling radiators which together define a chamber (7), optionally with some of the walls formed by perforated plates instead of radiator elements. One of the radiator elements may be pivotally mounted with respect to the others to provide access to the chamber. The arrangement of radiators may be mounted on a common support (1).

Abstract: The instant invention pertains to a road vehicle's axial flow cooling fan which normally draws cooling air from in front of the vehicle and blows it into the engine bay. The instant invention includes a control circuit for the fan motor that provides variable speed and bi-directional, or reverse and normal, fan operation. Reverse fan operation blows air from the engine bay through the radiator and out the front of the vehicle, and normal fan operation blows into the engine bay. Two input sensors feed the control circuit, one for road speed of the vehicle and other for engine temperature. When the engine is below its operating temperature and the vehicle is moving, the fan is made to blows in reverse at a speed proportional to road speed so as to block cold ram air from entering and blasting onto a warming engine. This speeds engine warm-up to reduce emissions, improve fuel economy, and speed windshield defogging.