( 11 of 11 ) |
United States Patent | 3,707,955 |
Ulbing | January 2, 1973 |
Improved system for supplying fuel and oil to two-cycle internal combustion engines including a simple and reliable fuel-oil injector pump which mixes the fluids in a desired ratio from separate tanks. Means for automatically shutting off fuel flow upon loss of oil are provided. Crankcase scavenging pressure assists oil pumping. The injector pump continuously circulates fuel through the fuel tank to avoid vapor lock. Several arrangements for properly correlating the injector pumping rate with engine air flow are disclosed. An improved injection nozzle utilizing an elastomeric band is disclosed. A system for supplying dual cylinders from the same injector pump is disclosed.
Inventors: | Ulbing; Otmar M. (Lisle, NY) |
Assignee: |
Borg-Warner Corporation
(Chicago,
IL)
|
Appl. No.: | 05/148,867 |
Filed: | June 1, 1971 |
Current U.S. Class: | 123/73AD ; 123/575; 417/317 |
Current International Class: | F01M 3/00 (20060101); F01M 3/02 (20060101); F02B 1/00 (20060101); F02B 75/02 (20060101); F02B 1/04 (20060101); F02h 033/04 () |
Field of Search: | 123/73AD,119R 417/317 |
2935057 | May 1960 | Perlewitz |
3140700 | July 1964 | Nallinger |
3114356 | December 1963 | Werner et al. |
3202102 | August 1965 | Staege et al. |
3212485 | October 1965 | Werner et al. |
3653784 | April 1972 | Leitermann et al. |