Fuel-air mixture-forming device for internal combustion engines

Details Fuel-air mixture-forming device for internal combustion engines Fuel-air mixture-forming device for internal combustion engines

1990-03-15

1991-05-07

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Heating of combustible mixture

123547, 123590, 261DIG56, 261144, F02M 1908, F02M 912

Patent

active

050127888

ABSTRACT:
The present invention proposes a fuel-air mixture-forming device for internal combustion engines, having a rotationally symmetric nozzle body (2) which, together with a rotationally symmetric throttle body (8) displaceable in it, forms a convergent-divergent nozzle which discharges into a radial diffusor (6). In the vicinity of the narrowest cross section (5) of the nozzle there is provided a fuel slot (11) extending around it and discharging into it, at least one fuel feed line (9, 10) discharging into the fuel slot. The radial diffusor is formed by a region of the nozzle body which is curved outward in the direction of flow of the mixture and by a wall (15) of a structural member (17) which forms a structural unit (18) with an intake manifold (7) of the internal combustion engine, the wall (15) lying opposite the nozzle body and being rotationally symmetric to the longitudinal axis (1) of the throttle member and having a bulge (16) pointing toward the throttle member. Due to its development, the radial diffusor makes it possible that a film of fuel which necessarily adheres to the diffusor wall upon injection of the fuel detaches itself, whereby an improved mixture is formed.

REFERENCES:
patent: 1973362 (1934-09-01), Weiertz et al.
patent: 2034048 (1936-03-01), Leibing et al.
patent: 2084340 (1937-06-01), Hartsough
patent: 2572338 (1951-10-01), Hartwig et al.
patent: 2646264 (1953-07-01), Morris
patent: 4008699 (1977-02-01), Braun et al.

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