Stratified charge internal combustion engines

Details Stratified charge internal combustion engines Stratified charge internal combustion engines

1986-02-20

1986-12-23

Lazarus, Ira S.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 52MF, 123 73F, F02B 7502

Patent

active

046305912

ABSTRACT:
A stratified-charge two-stroke internal combustion engine of the kind in which a rich mixture of fuel and air reaches each cylinder from an auxiliary transfer passage, and further air from a main transfer passage. The fuel-supply device for each cylinder is located in the auxiliary transfer passage well upstream of its entry into the cylinder so that substantial mixing of fuel and air takes place before entry. The rate of fuel supply is typically simply related to conditions in the auxiliary passage, and may be governed by a carburetor-type device located there or by a pressure-sensitive device located there and controlling a pump delivering through an injector. Multi-cylinder designs are described with a single fuel-supply device located in an auxiliary passage common to all the cylinders. Also the use of pistons of stepped form in which the face of one step takes the firing force by which that piston is driven, and the face of the other step exerts the pumping action by which combustion air is delivered to another cylinder by way of the auxiliary passage.

REFERENCES:
patent: 1013955 (1912-01-01), Roberts
patent: 1250715 (1917-12-01), Toomey
patent: 1527166 (1925-02-01), Bezu
patent: 1771552 (1930-07-01), Tower
patent: 2376968 (1945-05-01), Jones
patent: 4067302 (1978-01-01), Ehrlich
patent: 4258670 (1981-03-01), Thery

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