Abstract: To increase the surface area of an oil cooler and improve the cooling efficiency of an engine for a motorcycle, dual radiators are mounted on the body frame on both right and left sides of a water-cooled engine. Both radiators are inclined relative to a center line of the motorcycle with the larger space between the top ends thereof than the space between the bottom ends thereof on both sides of the engine. Also, the forward portions of the radiators project forwardly from the front end of the engine. An air-cooled oil cooler is provided at the upper space between both radiators in front of the engine and extends laterally across the width of the engine. Furthermore, a cooling system incorporates the radiator and oil cooler configuration.

Abstract: A liquid coolant heat exchange system for use in semimonocoque aircraft includes an arcuate planar heat sink fixed along a radius of curvature R.sub.1 by forming members, a flexible arcuate planar spreader plate having a radius R.sub.2, such that R.sub.1 >R.sub.2, a heat exchange tube for transferring heat from the liquid coolant to the heat sink and means for attaching the spreader plate to the forming members to hold the spreader plate in contact with the heat sink.

Abstract: A heat exchanger of the plate fin and tube type which comprises two longitudinally extending sections. The two sections each have a planar cross section and form a continuous length. The sections are bent relative to one another with the planar cross sections of the two sections forming an angular relationship therebetween in two different planes. In a preferred embodiment, a further bend is made thereby forming a third longitudinally extending section.

Abstract: A duct apparatus for drawing a flow of air into a heat exchanger assembly of an automotive vehicle and directing the flow of air exiting the heat exchanger assembly away from the vehicle engine is disclosed. The apparatus includes a generally rectangular body extending across the entire length of the heat exchanger assembly and partially enclosing it. The apparatus further includes a plurality of vanes disposed in the body adjacent the heat exchanger assembly, the vanes directing the flow of air exiting therefrom, a pair of generally curvilinear plenums each in fluid communication with the body and extending longitudinally therefrom. Each of the plenums includes an exit end for directing air exiting therefrom to ambient air and a fan assembly for drawing air through the heat exchanger assembly.

Abstract: An oil cooling apparatus for cooling oil contained in a motorcycle engine of a motorcycle includes a housing having a front wall, a bottom wall extending rearwardly from the front wall, and a pair of spaced apart side walls which attach respective sides of the front and bottom walls. The housing further includes an opening for accessing the interior of the housing, a plurality of inlet louvers formed in the front wall and a plurality of outlet louvers formed in the bottom wall. The arrangement is such that air enters the interior of the housing via the inlet louvers and exits the interior of the housing via the outlet louvers. A bracket mounts the housing on an engine of a motorcycle in a position such that the opening of the housing generally faces the engine. A radiator contained within the engine of the motorcycle is provided for cooling the motorcycle's engine. Tubing, in fluid communication with the engine whereby oil flows therethrough, is disposed within the radiator.

Abstract: An amphibian motor vehicle comprises a watertight engine room formed in a lower part of a vehicle body, an air intake opening formed at a front part of the vehicle body such that the air intake opening is positioned above water level when the amphibian motor vehicle cruises on water, an air passage separated from the engine room and generally extending in a longitudinal direction of the vehicle body from the air intake opening and a radiator disposed in the air passage for air cooling a coolant flowing into the radiator from the engine.

Abstract: The inlet and outlet passages communicating with a water-cooled engine oil cooler for a vehicle, such as a motorcycle, are arranged for bypass of a regulated amount of oil from the inlet passage to the outlet passage to enhance the flowability of the cooled oil. Provision is made for a replaceable flow control orifice between the oil inlet and outlet passages to regulate oil viscosity. Also described is an arrangement providing for mounting the cooler to the crankcase or oil pan surface whereby air flowing past the cooler during movement of the vehicle assists the effects of the cooling liquid.

Abstract: An oil cooling device for a motorcycle engine operating by convection heat transfer with air outside the device. A fin arrangement may be included to enhance the rate of heat exchange. The device conforms to forward portions of the motorcycle frame. The location of the device allows air needed to cool the engine to flow by the device uninhibited. This location is also unobtrusive and thus does not detract from the motorcycle's overall appearance. The oil cooling device is activated by a thermovalve which opens whenever a chosen temperature range is attained. This device could be incorporated into a motorcycle at manufacture or be configured for addition to a motorcycle to improve oil cooling as an auxiliary oil cooler.

Abstract: An inlet air passage in the aerodynamically configured front end of a motor vehicle directs an inlet air stream at an inclination upwardly from the bottom of the front end of the vehicle and across a radiator for cooling engine coolant and wherein the radiator has coolant tubes and air centers for forming air flow passages through the radiator between spaced headers. The tubes are inclined with respect to the vertical headers at an angle selected to locate the air flow passages parallel to an inlet air stream for aligning the inlet air stream with the air flow passages for reducing air pressure drop across the radiator.

Abstract: A radiator with a fan is arranged at a forward tilt under the footrest floor part of a cab floor of a cab-over-engine vehicle. The fan confronts the front of the engine. The fan is connected with the radiator through an air duct, a central axis of the air duct rises rearwardly. The fan has at its center a boss shaped into a truncated cone, the extremity of each of the blades in its longitudinal direction being parallel to the axis of the boss. The air duct has one opening end shaped into a cylinder which partially covers the blades of the fan.

Abstract: A radiator cooling apparatus for an automotive internal combustion engine is provided. The apparatus comprises an air suction duct or air injection duct connected to a closed-type blower. The suction duct draws ambient air through the core of the radiator and cools the hot water in the core. The injection duct injects ambient air toward the core and cools the hot water in the core. On the active surface of the duct, a plurality of bellmouths or nozzles are formed. The existing fan is removed from the engine, whereby fan noise is eliminated.

Abstract: An air/liquid heat exchanger having a refrigerant spray providing evaporative cooling.

Abstract: A charge air cooler apparatus for a truck having a front engine power takeoff mechanism. The charge air cooler has a first and a second core positioned in side-by-side spaced relation on opposite sides of the front engine power takeoff mechanism. Intake and outlet manifolds above and below the front engine power takeoff span the distance between the two cores, and turbocharged air preferably flows in parallel through the side-by-side cores. An auxiliary heat exchanger is shown mounted above the front engine power takeoff and between the cores.

Abstract: An air/liquid heat exchanger for aircraft having ram pressure powered evaporative cooling.

Abstract: A heat exchanger is disclosed comprising a pair of laterally spaced fluid conducting tanks operatively interconnected by a plurality of elongated fluid conducting tubes having sector shaped cross sections and arcuately spaced from one another in a circular pattern to present parallel interfacing sides. A plurality of elongated corrugated fins or air centers each having convolutions of substantially constant height and width to have spaced lines of contact along the width and length of each of the sides of the tubes for maximizing heat transfer and so that the tubes will be optimally supported to provide increased resistance to pressure ballooning and burst. These air centers are standard corrugated rectilinear components that reduce complexity and cost of this circular heat exchanger. This heat exchanger can be arranged in a parallel relationship with a transverse automotive engine and a cooling fan operatively mounted within the heat exchanger can be directly driven by the engine.

Abstract: A cooling-air ducting system in the front-end space of a motor vehicle is described, which front-end space is delimited by a front-end wall having an air inlet opening and in which front-end space is arranged a cooler through which cooling air flows, having a cooling-air ducting space between front-end wall and cooler and a cooling-air fan downstream of the cooler. In order to achieve a sufficient cooler surface area, in particular in the case of a low overall height of the front-end space, while continuing to use the cooling air fan driven by the internal combustion engine, the cooler is divided into a plurality of individual component parts which are arranged staggered relative to one another in such a way that they overlap with spacing relative to one another in the driving direction of the motor vehicle and that they are acted upon in common by the cooling-air fan.

Abstract: Each of a pair of heat exchangers, such as a radiator and a condenser, includes a tubular structure defining a fluid flow path between an inlet manifold and an outlet manifold. The heat exchangers reside in juxtaposition for a unit with the respective fluid flow paths being congruently aligned along the axis of a stream of cooling medium passing therethrough. The heat exchangers are sealingly encased within a shroud for directing the stream of cooling medium through the tubular structures. The shroud, which is alternately usable with a conventional radiator, and the heat exchanger units are installed in a motor vehicle as a pre-fabricated modular cooling unit.

Abstract: A buffering portion of boundary layer flow along a flight vehicle surface diverted into an internal cavity at a downstream edge of a surface mounted window isolating recirculating flow of the diverted fluid through the cavity while it is cooled therewithin. Outflow of the cooled buffering fluid from at an upstream edge of the window is conducted into the buffering portion of the boundary layer flow to cool the window and prevent damage thereof by aerodynamically generated heating of the surface under high velocity flight conditions.

Abstract: A cooling system has a coolant path which is external to the motor housing of the motor. The external coolant path is connected across the inlet and outlet of the internal coolant path through which coolant is normally conveyed to cool the hot zones of the motor. A closed circuit is thus formed. The external coolant path includes a heat exchanger arranged to place the coolant in heat exchange relationship with water in which the motor runs. It may also include a header tank for pressure control and topping up purposes. The external path can be in kit form for conversion of existing motors. The motor may be an inboard or outboard motor.

Abstract: A motor vehicle power steering installation has a heat exchanger mounted in a hollow portion of a motor vehicle frame where air passes through at a velocity higher than that outside the motor vehicle frame.

Abstract: In an air ducting system for cooling air in an air duct in the front end of a motor vehicle, which is positioned with the air outlet at the underside of the front end in front of a capsule surrounding the engine compartment of the motor vehicle, a plurality of aerodynamically shaped hollow guide vanes internally traversed by a cooling medium which divide the air duct into a plurality of subducts is arranged as far as the air outlet opening at the underside of the front end in order to improve the airflow in the air duct and to cool the cooling medium.

Abstract: The inlet and outlet passages communicating with a water-cooled engine oil cooler for a vehicle, such as a motorcycle, are arranged for bypass of a regulated amount of oil from the inlet passage to the outlet passage to enhance the flowability of the cooled oil. Provision is made for a replaceable flow control orifice between the oil inlet and outlet passages to regulate oil viscosity. Also described is an arrangement providing for mounting the cooler to the crankcase or oil pan surface whereby air flowing past the cooler during movement of the vehicle assists the effects of the cooling liquid.

Abstract: A radiator device for a motorcycle operatively connected to an engine unit provided with a water jacket and in which cooling liquid circulates comprises a pair of first and second radiator units arranged bilaterally in upright fashion with respect to the motorcycle body. Each of the radiator units is composed of upper and lower tanks in an upright arrangement thereof, the upper tank of the first radiator unit having a top portion disposed at a level lower than a top portion of the upper tank of the second radiator unit. The cooling water directly introduced into the upper tank of the first radiator unit is then divided and one branch flow of the cooling water is fed into the upper tank of the second radiator unit through means of another water tube interconnecting the upper tanks of the first and second radiator units.

Abstract: A cylindrically-shaped engine cooler for automobiles comprises a pair of water tanks or main coolant tubes, a plurality of water tubes connecting the water tanks or main coolant tubes, a plurality of cooling fins and at least one cooling fans. The cylindrical engine cooler is disposed in a vehicle so that the axis line of the cooler crosses the traveling line of a vehicle so that the air resistance against vehicle travel becomes small. The water tanks or main coolant tube can be used as the shroud for accommodating the cooling fan, when they are annularly shaped and disposed at the end of the cylindrically cooler. Two cooling fans disposed at the both ends of the cylindrically-shaped cooler may have different air-blowing capacity each other.

Abstract: An improved vehicle bumper system which mounts in a conventional manner on the front of a vehicle and which is tubular so that engine coolant can flow into, through and out of the bumper system and thereby be placed in heat exchange relationship to the ambient air. The bumper system further includes one or more valves coupled to the engine block to selectively place the bumper system in or out of fluid communication with the engine block. The bumper system itself can be a single bumper member or two or more bumper members, if desired. For a pair of bumper members, such members are typically vertically spaced apart and in vertical alignment with each other while the ends of the bumper members are in fluid communication with each other. The inlet and outlet of the bumper system is conveniently located so that hoses or tubes can easily couple the bumper system to the engine block of the vehicle.

Abstract: A liquid-cooled engine system comprising a liquid-cooled engine and a radiator which are arranged within an engine room. A duct is arranged within the engine room, for guiding air flow having passed through the radiator, to the outside of the engine room without exposure of the air flow to the engine. At least a part of the exhaust muffler connected to the engine is disposed within the duct so that the exhaust muffler is cooled by at least a part of the air flow guided by the duct. Preferably, the engine is a vertical type V-engine.

Abstract: A cooling device for cooling an automatic transmission by forcing air into heat transference with the transmission pan comprising a framework spaced below the bottom surface of the pan to provide a gap for the flow of air and a plurality of slats; each of the slats mounted to the framework at an upwardly inclined angle from front to rear transverse to the length of the pan and in parallel relationship with one another. Each of the slats is provided with an air intake opening, each opening being raised on successive slats from front to rear in "stair-step" fashion for maximum heat transference over the length of the pan. A pair of brackets are provided for mounting the device to existing pans or, in the alternative, the device may be unitary with the pan. The device is particularly useful on all vehicles having adequate ground clearance such as pickups, trucks, motor homes, and the like.

Abstract: A heat exchange apparatus which is particularly applicable for use in vehicles such as aircraft subject to high gravitational forces. A core provides superposed fluid flow paths extending longitudinally of the roll axis of the aircraft between opposite ends of the core and alternating in planes generally parallel to the pitch axis of the aircraft. Alternate ones of the flow paths carry a coolant between the opposite ends of the core, and the remaining flow paths carry a medium to be cooled. The alternate flow paths each include a plurality of flow passages extending between opposite ends of the core. A first fluid distributor at one end of the core evenly distributes coolant to the alternate flow paths. A second fluid distributor at the one end of the core evenly distributes coolant to the plurality of flow passages in each alternate flow path.

Abstract: A radiator arrangement for a motor vehicle has air inlet openings in the front of the arrangement and lateral air discharge openings. The arrangement is composed of an air guiding housing which has two separated spaces for receiving the water radiator and the oil radiator respectively. Separate air inlet ducts are provided for the spaces and a combined air guiding duct combines the air flows downstream of the radiators. The air is then discharged through lateral discharge openings in the side walls of the vehicle located ahead of the front wheels.

Abstract: An ambient air-to-engine fluid heat exchanger, preferably a charge air cooler, for a vehicle having an ambient air modulator in the form of an apertured plate mounted adjacent the face of the heat exchanger and controllably slidable to bring the plate apertures in registry with the ambient air openings of the heat exchanger. If the heat exchanger is for engine coolant, the front face of the heat exchanger comprises a second plate having the heat exchanger ambient air openings therein. If it is a charge air cooler, a second plate is unnecessary because, in an air-to-air heat exchanger, the charge air tubes are about the same width as the ambient air passages and thus the tubes can block the air flow through the modulator apertures when the plate is positioned to do so. The modulator plate is further preferably provided with integral louver portions between the apertures for channelling and streamlining the ambient air flow into the apertures and heat exchanger.

Abstract: An air supply channel for a charging air intercooler of an exhaust gas turbocharger of an internal combustion engine arranged in the rear of a vehicle, in which the air supply channel is arranged within the fender area of the vehicle and includes an air inlet and an air discharge opening; the channel includes a tubular element which is constructed trumpet-shaped and is retained in the wheel casing above the rear wheel; at its air inlet side, the channel is connected with an inlet connection fixed at the body by way of a connecting sleeve and at its air discharge side with the charging air intercooler.

Abstract: A navigable water craft having a first tool mounted on the bow area for removing pollutants. The tool may be a basket or scoop which is mounted to be raised and lowered such as through hydraulic rams. Additionally, the basket may be mounted to be rotated about a vertical axis from side-to-side of the craft. At the stern area is mounted a weed removal tool preferably in the form of a triangular rigid structure which, is use, is lowered to be dragged on the sea bed by a line wound on a winch mounted on the craft. A control station including an operator's seat is located between the stern and bow forwardly of the winch which preferably is located in an open recessed compartment. To protect the steering rudder of the craft, a barrier is positioned at the stern to prevent the weed removal tool from engaging the rudder during raising or lowering of the tool.

Abstract: Radiator for a two-wheeled motor vehicle with a lateral V-type crankshaft straddle type engine. The radiator is attached to the front section of the down tubes and comprises an upper section between an upper tank connected to coolant recovery piping and a middle tank, and a pair of lower sections between the middle tank and a pair of lower tanks supplying coolant piping at both sides. One of the lower tanks is lower than the other, with a connecting pipe between them inclined so as to equalize the coolant flow speed.

Abstract: An edge situated in high speed flow of medium is cooled by a tubular heat pipe having a longitudinal axis situated parallel to the edge. The exterior surface of the evaporator section of the heat pipe forms the edge. The heat pipe contains a working fluid existing in both gaseous and liquefied states. Heat input along the edge evaporates working fluid in the liquid state located in the evaporator section, and the heat is transferred transversely across the longitudinal axis of the heat pipe by the flow of vapor to the condenser section. The vapor condenses in the condenser section and releases its latent heat of vaporization. The condensate flows to the evaporator section by means of wicks composed of capillary material. The heat released into the walls of the condenser section is transferred through the walls by conduction and into another heat transfer device, for example, an active cooling apparatus or the evaporator sections of abutting heat pipes of conventional tubular configuration.

Abstract: An oiler cooler surrounding the head pipe of a motorcycle on three side and is fixed thereto. It is positioned vertically between the top bridge and the bottom bridge and laterally between the pair of left and right front fork pipes which are inserted through the top and bottom bridges. Upon turning, the cooler remains stationary relative to the motorcycle main frame.

Abstract: A dual mode heat exchanger 10 for cooling airborne electronics 12 through a cold plate 14. The heat exchanger either radiates heat to air through radiator fins 18 or absorbs heat by evaporative cooling. A liquid coolant contained in grooves 16 of the cold plate 14 boils at a preselected temperature and thereby absorbs heat energy. Vapor released by the boiling liquid is exhausted through a hydrophobic filter membrane 24.

Abstract: In a motorcycle engine having front and rear engine blocks arranged along the longitudinal line of a vehicle body, the front engine block is equipped with cooling fins for air-cooling and the rear engine block is provided with a water jacket for water-cooling. The engine may be a V-type engine or a horizontal opposed-type engine. The present invention is applicable to a motor scooter having left and right steps for placement of the feet of the driver to place his feet, the steps being installed in the lower portion of the vehicle body between the front and rear wheels of the vehicle.

Abstract: An aerodynamic heated steam generating apparatus having an aerodynamic heat immersion coil steam generator adapted to be located on the leading edge of an airframe of a hypersonic aircraft and being responsive to aerodynamic heating of water by a compression shock airstream to produce the steam pressure, expansion shock air-cooled condenser adapted to be located in the airframe rearward of and operatively coupled to the aerodynamic heat immersion coil steam generator to receive and condense the steam pressure, a steam pressure reacting device operatively coupled between the aerodynamic heat immersion coil steam generator and the expansion shock air-cooled condenser for driving a load and an aerodynamic heated steam injector manifold adapted to distribute heated steam into the airstream flowing through an exterior thrust generating channel of an air-breathing, ducted power plant is shown.

Abstract: Fore and aft headers are parallely spaced apart and connected by a plurality of tubes or pipes extending normal thereto and forming therewith a grid type heat exchanger. The headers are streamlined and fixed to the bottom of a marine vessel with the tubes spaced outwardly from the vessel's bottom and extending longitudinally therewith. The inboard and outboard sides of the tubes are narrowed to define wider entrances and exits between tubes than the spaces between adjacent sides of the tubes intermediate the inboard and outboard sides. The streamlined headers reduce flat plate resistance and resistance due to turbulent water flow to promote laminar water flow therebetween from forward to aft. The widened entrances and exits between tube tops and bottoms accelerates water flow up, around and between tubes by eliminating the "vena contracta" and increasing the flow around adjacent tube sides, thus increasing the rate of cooling of a coolant from an interior heat source.

Abstract: A closed cycle vaporization cooling system for an underwater vehicle's in-to-outer hull heat transfer having a low pressure freshwater circulating loop means for collecting and cooling waste heat from inside the vessel by an evaporator means located inside the vessel and so configured to operate under all conditions, an adiabatic zone within the loop for conveying vaporized working fluid to a condenser means located outside the underwater vehicle's pressure hull utilizing a chimney effect free-flooded seawater heat sink wherein cold seawater flows from bottom to top of the heat sink over the condenser means, and a condensate means for condensing and returning the condensate to the evaporator means.

Abstract: A cooling system for the internal combustion engine of a motorcycle includes a radiator and means defining air passages each having a forwardly facing inlet opening disposed respectively on the opposite sides of the motorcycle's front fork. Each air passage extends rearwardly from the inlet opening to an outlet which opens into a plenum chamber disposed adjacent the radiator. The cross-sectional area of each passage increases gradually between its inlet and outlet ends. An exhaust duct is connected to the plenum chamber and the radiator is disposed between the plenum chamber and the exhaust duct.

Abstract: This invention relates to a device using solar energy to cause a "chimney effect" to cool and refresh the interior atmosphere of a building or a vehicle. The invention further provides a modification which takes advantage of the exhaust heat of an engine so that it can operate during the night or in sunless days.

Abstract: The invention relates to an apparatus for heating persons travelling in or on motorcycles or motor vehicles having internal combustion engines, particularly open motor vehicles, racing vehicles or rail vehicles, particularly working vehicles or working on ships, floating drilling platforms, etc. comprising a hot air generator supplied with the waste heat of the internal combustion engine and an article of clothing connected to said generator by means of a flexible line and by means of which hot air can be supplied to the person wearing the clothing.

Abstract: Herein disclosed is a radiator grille structure for attachment to the front end of an automotive vehicle having a fore-and-aft direction, comprising a stationary grille to be secured to the vehicle body of the automotive vehicle and comprising a plurality of horizontally elongated lamellar plates vertically spaced apart from each other and respectively having front end portions bent downwardly and forwardly for forming therebetween gaps to pass ram air therethrough, a movable grille comprising a plurality of horizontally elongated lamellar plates vertically spaced apart from each other and respectively having front end portions bent downwardly and forwardly, the lamellar plates of the moveable grille being arranged alternately to the lamellar plates of the stationary grille, the movable grille being movable in the fore-and-aft direction with respect to the stationary grille so as to cause the front end portions of the lamellar plates to move toward and away from positions closing the gaps, respectively, and d

Abstract: A motor vehicle, especially a truck, with a cab and a cooling system for an internal combustion engine is disclosed. The cooling system comprises a heat exchanger disposed in an engine compartment and provided with an associated blower, and at least one additional heat exchanger located outside the engine compartment and with which an additional blower is associated. The additional blower is mounted on a roof of the cab and is connected through a channel with the additional heat exchanger which is located inside the channel in the vicinity of one wall of the cab.

Abstract: An oil heated motorcycle handlebar construction is enclosed utilizing an oil line extending from the engine or oil pump of the motorcycle engine to carry the warm oil to a sealed conduit defined along the interior of the handlebars. The intake line extends from the point of entry into the handlebars to the outermost end of one handle. An exit line is included extending from the outermost end of the opposite handle to carry the oil from the handlebar interior back to the oil tank of the conventional motorcycle engine. The intake line and the oil line include an intermediate aperture in order to minimize the heating of the portions of the handlebars adjacent to the gripping sections during operation of the motorcycle during the warmer months. Access to the interior of the oil chamber defined within the handlebars is provided by removable stoppers in the outer ends of each of the arms of the handlebar.

Abstract: A first water header is connected to a second water header by laterally-spaced multiple parallel composite tubes, each consisting of two or more component tubes of vertically-elongated rectangular cross-section welded to one another along their horizontal narrower adjoining faces, the height of each component tube being a multiplicity of times the width thereof. The thus welded faces form intermediate partitions or webs of doubled thickness running the entire length of the composite tube. This greatly strengthens the composite tube thus obtained and also divides the cooling water flow into vertically-spaced thin streams or bands of cooling liquid. Rising from the first and second headers are first and second fittings which serve not only to transmit the cooling water into and out of their respective headers but also serve to connect and attach the header to the keel or other underwater location of the heat exchanger to the hull of the boat or vessel.

Abstract: A unidirectional heat transfer device for use between an electronic assembly on an aircraft and the skin and/or pod on the aircraft. The device includes a thermal decoupler mechanism which operates to disengage a retractable interface heat transfer surface when the skin on the aircraft reaches a predetermined elevated temperature caused by the high speed of the aircraft. In the decoupled mode, the heat from the electronic equipment passes to a phase change material heat absorber to provide a limited capability cooling function during extended high speed aircraft operation.

Abstract: The 1st type of parallel flow evaporator, comprising an upper tank and a lower tank, a plurality of flat pipes communicating said upper and lower tanks, fins inserted between each of said flat pipes, having an outlet pipe and an inlet pipe respectively, said outlet pipe being inserted into the innermost of said upper tank and provided with bores at respective positions above each of said flat pipes, and said outlet and inlet pipes are respectively inserted on the windward of said upper and lower tanks.

Abstract: A radiator air inlet for an armored car providing unobstructed flow of cooling air to the radiator and armored plate protection for the radiator's relatively fragile structure. The air inlet system comprises a baffle disposed in front of the radiator and made of two plates of armor steel disposed generally at 90.degree. to each other, and each disposed at about 45.degree. to the plane of the radiator. The two plates of armor steel each form one of the walls of an air induction manifold, one of which has an inlet directed at an angle upwardly and the other an inlet directed at an angle downwardly. Sheet metal panels and armored plate panels form the remaining walls of the pair of manifolds ducting cooling air onto the radiator, the sides of the air induction manifolds being made of armor plate panels.