Interval spark ignition combustion engine

Details Interval spark ignition combustion engine Interval spark ignition combustion engine

1985-11-21

1988-03-22

Feinberg, Craig R.

Internal-combustion engines

Multiple piston, common nonrestrictive combustion chamber

Four-cycle

123 51BD, 123 48D, F02B 2508

Patent

active

047321156

ABSTRACT:
A two stroke spark ignition engine requiring a minimum of one pair of cylinders is constructable in multiple cylinder pairs. Each cylinder contains two oppositely working pistons. Four pistons drive, without rocking couples, opposite sides of a single crankshaft having three crankpins. Two paired cylinders are interconnected through and share a common precombustion chamber insuring cylinder pressure equalization and require only one fuel injector and one spark plug. The valveless engine has piston controlled intake and exhaust ports and crank phasing insures that exhaust ports are opened and closed prior to the respective opening and closing of the intake ports rendering the uniflow scavenged cylinders superchargeable. The precombustion chamber is optionally made variable in volume to simultaneously provide a variable compression ratio to both cylinders without affecting piston geometry or stroke.

REFERENCES:
patent: 657226 (1900-09-01), Marmonier
patent: 1925086 (1933-09-01), Snyder
patent: 3071122 (1963-01-01), Lieberherr
patent: 4543917 (1985-10-01), Lapeyre
patent: 4566408 (1986-01-01), Lapeyre

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