Oil cooler for automatic transmission

• US 5,165,468 A
• Filed: 07/25/1991
• Issued: 11/24/1992
• Est. Priority Date: 08/06/1990
• Status: Expired due to Term

• Current Assignee: Calsonic Kansei Corporation, Hoechst Aktiengesellschaft (Sanofi )
• Original Assignee: Calsonic Kansei Corporation
• Inventors: Yoshida, Hiroyuki, Tajima, Makoto, Ohki, Kuniaki, Beppu, Kei
• Primary Examiner(s): Ford, John K.
• Application Number:
  US07/736,070
• Time in Patent Office: 488 Days
• Field of Search: 165/916, 165/167, 165/47, 165/41, 74/606 A, 184/104.1, 60/912
• US Class Current: 165/47
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: B60R 17/00 Arrangements or adaptations of lubricating systems or devices lubricating in general F16N
• CPC Class Codes: F01P 11/08 Arrangements of lubricant coolers in lubrication apparatus F01M
• CPC Class Codes: F16H 57/0413 Controlled cooling or heating of lubricant; Temperature control therefor
• CPC Class Codes: F16H 57/0417 Heat exchangers adapted or integrated in the gearing
• CPC Class Codes: F28D 2021/0089 Oil coolers heating or cooling lubricants in vehicles F01M5/00
• CPC Class Codes: F28D 9/005 the plates having openings therein for both heat-exchange media
• CPC Class Codes: Y10S 165/916 Oil cooler
• CPC Class Codes: Y10S 60/912 Cooling means
• CPC Class Codes: Y10T 74/2189 Cooling

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.

Claims

1. An oil cooler for an automatic transmission, comprising a rectangular core made of a plurality of stacked plates penetrated at a certain interval by an oil inflow stud bolt having a hollow center that carries oil from said automatic transmission and by an oil outflow stud bolt having a hollow center that feeds oil to said automatic transmission, said oil inflow and outflow stud bolts being located along a central longitudinal axis of said cooler and fixing said core on a housing of said automatic transmission, characterized in that plate side oil passages are formed in said core at first diametrically opposite corner thereof and connected via fluid passages formed in an oil tank which projects outwardly from said core, to corresponding oil inflow and outflow stud bolts.

2. An oil cooler for an automatic transmission as set forth in claim 1, characterized in that said rectangular core is formed of first and second aluminum plates stacked alternately.

3. An oil cooler for an automatic transmission as set forth in claim 1, characterized in that cooling water inflow and outflow tubes are linked to second diametrically opposite corners in said core.

4. An oil cooler for an automatic transmission as set forth in claim 1, characterized in that said oil tank is formed on the front side of said core and is connected to said core via a collar which serves as an oil tube and an upper retainer therearound, that this collar contains said oil inflow stud bolt inserted at a given interval therefrom, that said oil inflow stud bolt is provided longitudinally with a central hole connected to said housing and further provided axially with a through-hole in communication with said central hole, and that said retainer forms a guide member with a connecting way placed outside said oil tube located in said oil tank.

5. An oil cooler for an automatic transmission as set forth in claim 2, characterized in that said plate side oil passages are formed by coaxially aligned through-holes formed in first diametrically opposite corners of said first and second plates in said core.