Fuel-gas mixture injector with a downstream mixing conduit
AssigneeRobert Bosch GmbH
InventorsJuergen Buchholz, Martin Maier
Life of this patent
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Abstract
A fuel injection valve for injecting a fuel-gas mixture into a mixture-compressing internal combustion engine with externally supplied ignition comprising a mixing conduit secured to one end of the fuel injection valve. The mixing conduit includes at least one cross-sectional constriction and an adjoining widening of the cross-section, through which the fuel-gas mixture flows at increased speed which tears off the fuel film from the wall of the mixing conduit and atomizes it into fine fuel droplets. In this way, the quality of fuel atomization can be substantially improved.
Claims11
An apparatus for injecting a fuel-gas mixture, having a fuel injection valve which has at least one injection port on one end, a mixing conduit downstream of said at least one injection port, said mixing conduit includes a first end into which fuel is injected through the at least one injection port of the fuel injection valve, a gas delivery conduit that communicates with the first end of said mixing conduit for injecting a gas directly into said mixing conduit downstream and spaced from said at least one port, which gas strikes the fuel admitted to said mixing conduit for mixing therewith, said mixing conduit (33), includes at least one cross-sectional constriction (37) downstream of said first end of said mixing conduit, and an adjoining section in a flow direction in which the cross section of the mixing conduit (33) widens.
Dependencies are inferred from the claim text.