Device for forming and metering an air and fuel mixture for an i

Details Device for forming and metering an air and fuel mixture for an i Device for forming and metering an air and fuel mixture for an i

1988-04-22

1990-03-06

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

123470, 123472, 123547, 123556, 123585, 261DIG82, F02M 6114

Patent

active

049056514

ABSTRACT:
A device comprising a body in which is formed a chamber in which fuel is mixed with air; a cylindrical mixture delivery duct the opening of which is controlled by a throttle valve; and a body cover to which is fitted a fuel injector for supplying atomized fuel into the mixing chamber; the aforementioned mixing chamber comprising at least a first and second portion defined by differently tapered surfaces, and a third portion defined by a cylindrical surface equal in diameter to the aforementioned cylindrical mixture delivery duct; the axial length of the cylinderical surface of the third portion of the mixing chamber, measured between the axis of the throttle valve and the top edge of the third portion itself, being at least equal to the radius of the circular contour of the aforementioned throttle valve.

REFERENCES:
patent: 4235375 (1980-11-01), Melotti
patent: 4436071 (1984-03-01), Hafner et al.
patent: 4539962 (1985-09-01), Nichols

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