Internal-combustion engines – Two-cycle – Rear compression
Patent
1977-09-06
1979-03-06
Lazarus, Ira S.
Internal-combustion engines
Two-cycle
Rear compression
123196R, 184 628, 417418, F01M 300
Patent
active
041424867
ABSTRACT:
A mixing apparatus for fuel and oil to be supplied on demand to an internal-combustion engine. An oil reservoir separate from a fuel tank is provided with an expandable chamber assembly and a positive displacement pump which are jointly operated in an opposed tandem relationship. The chamber assembly is used to supply mixed fuel and oil on demand to the engine fuel intake. The positive displacement pump draws measured amounts of oil from the reservoir during each stroke cycle and injects this measured amount into the incoming fuel in the chamber assembly. As one moves through its suction stroke, the other moves through its delivery stroke. The ratio between the volume displacement of the pump relative to the volume displacement of the expandable chamber assembly is equal to the desired volume ratio of oil to fuel at the engine fuel intake. The oil and fuel are thoroughly mixed as they are delivered from the apparatus.
REFERENCES:
patent: 2721453 (1955-10-01), Reutter
patent: 3653784 (1972-04-01), Leitermann et al.
patent: 3707955 (1973-01-01), Ulbing
patent: 3762380 (1973-10-01), Schultz
patent: 3784334 (1974-01-01), Hilgert
patent: 3886914 (1975-06-01), Ahrns et al.
patent: 3913551 (1975-10-01), Shaver
patent: 3929110 (1975-12-01), Raikov et al.
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