Multiple-cycle, piston-type internal combustion engine

Details Multiple-cycle, piston-type internal combustion engine Multiple-cycle, piston-type internal combustion engine

1976-03-19

1978-02-28

Myhre, Charles J.

Internal-combustion engines

Miscellaneous

Fuels, lubricants and additives

60619, 60620, 123 59EC, F02B 7520

Patent

active

040759806

ABSTRACT:
The invention relates to a multiple-cycle internal combustion engine having as a unit of two four-cycle cylinders operating 180.degree. apart and one two-cycle cylinder firing 90.degree. after the four-cycle cylinders fire. The four-cycle exhaust is admitted to the intake port of the two-cycle cylinder and the two-cycle cylinder ports are opened and closed in correlation with the exhaust cycle of the four-cycle cylinders so that four-cycle exhaust is admitted to the two-cycle cylinder and passes out through the outlet port thereof sweeping two-cycle exhaust out along with it. Thus, advantages are taken of the uncombusted products in the four-cycle exhaust to drive the two-cycle cylinders. At the same time, advantage is taken of the higher efficiency of four-cycle cylinders at low speeds and the higher efficiency of two-cycle cyclinders at high speeds to obtain an over all improvement in the efficiency of the engine.

REFERENCES:
patent: 727455 (1903-05-01), Rumpf
patent: 1070985 (1913-08-01), Reuter
patent: 1296555 (1919-03-01), Ricardo
patent: 1498757 (1924-06-01), Robertson
patent: 2113602 (1938-04-01), Pratt
patent: 3789807 (1974-02-01), Pinkerton
patent: 3896774 (1975-07-01), Siewert
patent: 3958540 (1976-05-01), Siewert

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