Abstract: The present invention provides a radiator achieving a structure that enables integrated brazing, facilitates mounting of an automatic oil cooler and repair on areas with defective brazing and realizes good mountability and recyclability. A tank portion 4 at which tubes 2 of the radiator are inserted is constituted of a first L-shaped tank member 30 and a second L-shaped tank member 40. Prior to the process for assembling the tank portion 4, intake/outlet pipes 9 and 10 are mounted at the first L-shaped tank member 30 and an A/T oil cooler 46 is mounted at the second L-shaped tank member 40 to facilitate mounting of the A/T oil cooler 46 inside the tank portions 4. In addition, since at least the tank portion 4, the tubes 2, the fins 3 and the side plate 11 are brazed together as an integrated unit in a furnace, the production of the radiator is facilitated.

Abstract: A base plate 20 is provided with an oil inflow hole 20b in the form of a through-hole. The oil inflow hole 20b includes an area overlapping oil inlet communication holes 1 of plates 5 within a region inside an annular grove 20a of the base plate 20, and has a planar shape extending beyond the outer rim of the overlapping area. Thus, in the base plate constituting a contact end when the oil cooler is mounted to the engine block, a decrease in communication resistance of the oil communication hole provided therein as well as a smooth circulation of oil is achieved.

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: In a method for joining a plurality of heat exchanger flat tubes with headers of a heat exchanger: each of the opposite end portions of the flat tubes has a cross section provided with a major axis and a minor axis; opposite major axis side walls of the cross section of each of opposite end portions of each of the flat tubes are obliquely cut off so as to form each of opposite minor axis side walls of the cross section of the end portion of the flat tube into a trapezoidal shape; the end portion of the flat tube is passed through an elliptical hole formed in the header; the end portion of the flat tubes thus passed through the header is flared over its entire peripheral wall; the thus flared end portion of the flat tube is then bent so as to be formed into a bent portion of the flat tube, which bent portion constitutes an essential part of a joint formed between the flat tube and the header; and the thus formed joint is dipped into a molten filler metal bath to form brazed or soldered portions around the join

Abstract: An oil cooler for motor oil used in engines has an element core, a base on which the core is placed, and a casing housing the element core. The core consists of a plurality of sets of two elements being combined together face-to-face and a fin member which is placed on the set of elements. These two elements and one fin member are join together to make a single unit. Several units are contained in the casing of the oil cooler. Cooling water circulates through the flat hollow doughnut-like elements combined. A partition is formed in the interior of the elements combined and a set of cooling water supply hole and exit hole is provided at both the sides of the partition. The core of elements and a base on which the core is placed are brazing adhered or fixed to each other in a hot vacuum furnace and then a dish-like cap is applied to the base. Motor oil to be cooled is led from the engine block to a filter mechanism through several fin members situated between elements.

Abstract: A painting system for painting a finned-tube heat exchanger suspended from a conveyor line so as to be conveyed thereby, comprises: (i) means for spraying on said heat exchanger with a water-soluble paint; (ii) means for air-blowing on said heat exchanger; and (iii) means for electrostatic spraying on said heat exchanger with a solvent-soluble paint. Each of spray nozzle assemblies and air-blow nozzle assemblies of said means issues paint spray or air blow to fins of said heat exchanger in a direction parallel to said fins. This painting system further comprises a scraper means for recovering said water-soluble paint sprayed and reached a wall member during spraying and air blow.

Abstract: A method of manufacturing a motorcycle radiator comprising the steps of:(1) arranging between a pair of horizontally arranged water tanks or headers, a straight radiator core comprising in combination: a plurality of corrugated sheets spaced alternately with a plurality of flattened tubes; the flattened tubes; and elongated reinforcing plates, each of said reinforcing plates being provided with a plurality of slits extending from opposite edge portions in width directions of the reinforcing plates, the slits on one of the opposite longitudinal edge portions being disposed in a row and at a predetermined pitch, and the slits on the other of the opposite longitudinal edge portions being disposed in another row and at the predetermined pitch at respective positions halfway between positions of adjacent ones of the slits on the one of the edge portions with respect to a direction parallel to the longitudinal axis;(11) assembling and brazing these main components to produce a straight radiator which establishes th

Abstract: An oil cooler assembly with an integrated oil filter, comprises: (i) a casing in which an oil-cooling chamber is formed, the casing constituting an external component attached to an engine block; (ii) a cooler-element unit disposed in the oil-cooling chamber of the casing, the cooler-element unit being provided with a cooling-water passage having a cooling-water inlet portion and a cooling-water outlet portion both of which open into the exterior of the casing; (iii) an oil filter detachably mounted in the oil-cooling chamber of the casing so as to divide the oil-cooling chamber into two compartments, the oil filter being coaxially arranged with the cooler-element unit; and (iv) oil-communication passages by which the two compartments of the oil-cooling chamber are communicated with a lubricating-oil passage provided in the engine block, respectively.