Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Year | Description |
| 1997 | Invention patented by Heon Lee on December 18th, 1997. Abstract: A bypass device for ATF (automatic transmission fluid) is disclosed. The bypass device of this invention has a valve housing with a plurality of ports. A spring-biased valve spool is movably received in the housing, while the thermal expansion bar is inserted into one end of the spool at a position opposite to a valve spring. The expansion bar selectively and thermally expands in accordance with the ATF temperature, thus moving the spool with two internal passages and one bypass passage being selectively formed in the valve housing. The device allows ATF to selectively bypass an ATF cooler in the event the ATF temperature is substantially low enough to allow the ATF to be free from any requirement of cooling, thus allowing the ATF at an appropriate temperature to circulate in the automatic transmission. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
