Internal-combustion engines – Multiple cylinder – Cylinder offset from crankshaft axis
Patent
1977-05-31
1979-06-05
Myhre, Charles J.
Internal-combustion engines
Multiple cylinder
Cylinder offset from crankshaft axis
123 59EC, 123 65BA, 123119C, 123119CD, 60624, F02B 2512
Patent
active
041570804
ABSTRACT:
The invention resides in a fuel efficient internal combustion engine employing a substantially constant volume combustion method and a moderate equivalent compression ratio. The engine has an air compressor connected to the intake port of the first cavity of a two cavity combustion chamber and substantially all the compression of the working medium is performed outside the combustion chamber by that compressor. In the combustion chamber, fuel and the compressed working medium are burned at substantially constant volume. Each cavity of the combustion chamber houses a piston whose motion alternately increases and decreases the cavity volume. The maximum volume of the first cavity is smaller than the maximum volume of the second cavity, to which it is connected by a duct. The duct connecting the two cavities serves as the only gas outlet of the first cavity and the only working medium inlet to the second cavity. Every downstroke of the piston in the first cavity is an intake stroke. On every upstroke of the piston in the first cavity, fuel mixed with the inducted compressed working medium is ignited and burned and the piston upstroke displaces the still unexpanded combustion gases out of the first cavity through the duct and into the second cavity, where the piston is in its downstroke. Every downstroke of the second cavity piston is both an intake and an expansion stroke, causing power to be produced. Every upstroke of the second cavity piston is an exhaust stroke.
REFERENCES:
patent: 691017 (1902-01-01), Thomson
patent: 941138 (1909-11-01), Frost
patent: 1372216 (1921-03-01), Casaday
patent: 1583669 (1926-05-01), Davol
patent: 2234267 (1941-03-01), Mallory
patent: 2468157 (1949-04-01), Barlow et al.
patent: 3173242 (1965-03-01), Erickson
patent: 3991721 (1976-11-01), Hurd
Feinberg Craig R.
Myhre Charles J.
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