Oil cooled piston
US4286505A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Apr 23, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2201/0436
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
PCT No. PCT/US79/00259 Sec. 371 Date Apr. 23, 1979 Sec. 102(e) Date Apr. 23, 1979 PCT Filed Apr. 23, 1979 PCT Pub. No. WO80/02308 PCT Pub. Date Oct. 30, 1980 Substantial heat is generated at the crown portion (18) of a piston (10). Cooling fluid has been directed to cavities (46) in the underside of the crown (18). However, at critical points of the piston cycle, the fluid drains from the cavities due to the forces of gravity. An oil cooled piston (10) is provided which includes a fluid trap (50) adjacent the crown (18). Some of the cooling fluid is trapped as it drains and is retained to enhance cooling of the crown (18). The fluid trap (50) includes a slot (60) permitting a jet spray of lubricating oil to be directed past the trap (50) to the cavities adjacent the underside of the crown (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.