Abstract: The present invention relates to a housingless type oil cooler formed by laminating a plurality of plate members and an object thereof is to prevent deformation of an oil filter seal surface caused by excessive tightening at the time or mounting of an oil filter.

Abstract: The present invention relates to a housingless type oil cooler formed by laminating a plurality of plate members and an object thereof is to prevent deformation of an oil filter seal surface caused by excessive tightening at the time of mounting of an oil filter.

Abstract: The device relates to an oil cooler and the object thereof is to provide an oil cooler with an improved mounting strength of water pipes against external stresses. A core portion 33 is formed by alternately stacking a plurality of plates 35, 37 and arranging cooling water passages 39 and oil passages 41 alternately between these plates 35, 37. On an upper portion of the core portion 33 is an oil tank 57 that is formed of an upper plate 47 and a cover plate 55. The upper plate 47 has a cooling water passage holes 43 communicating with the cooling water passages 39 and the oil passages 41. The cover plate 55 has water pipe insertion holes 51, 53 so as to correspond to the cooling water passage holes 43. The water pies 59, 61 are inserted into the cooling water passage holes 43 of the upper plate 47 by causing the water pipes 59, 61 to pass through the water pipe insertion holes 51, 53.

Abstract: The present invention relates to a housingless type oil cooler formed by laminating a plurality of plate members and an object thereof is to prevent deformation of an oil filter seal surface caused by excessive tightening at the time of mounting of an oil filter.

Abstract: The gist of the present invention consists in an oil cooler for an automatic transmission, wherein opposite corners in a rectangular core made of a plurality of stacked plates are provided with a plate side oil passages, which are connected via an oil tank formed projectingly to the front side of the core, to oil inflow and outflow stud bolts. In the present invention, the opposite corners in the core are provided with plate side oil passages, which are connected via the oil tank formed projectingly to the front side of the core, to oil inflow and outflow stud bolts, which permits the whole core to be supplied with oil.

Abstract: A core for a housingless oil cooler has alternate cooling water passageways and oil passageways, including two sets of aluminum plates coated on one side with a sacrificial corrosion layer and on the other side with a brazing filler metal layer, each plate having a peripheral rim projecting from the outer periphery. The plates of the first and second sets are assembled alternately and arranged so that the brazing filler metal layer coated on each plate of the first set is adjacent to the sacrificial corrosion layer of the next plate of the first set and the plates of the second set have a sacrificial corrosion layer opposed to the sacrificial corrosion layer of the adjacent plate of the first set to define a cooling water passageway therebetween, and the brazing filler metal layer on the outer surface of the peripheral rim of the plates of the second set is bonded to the inner surface of the peripheral rim of the adjacent plate of the first set.