Device for injecting a fuel-gas mixture
AssigneeRobert Bosch GmbH
InventorUwe Liskow
Life of this patent
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Abstract
A device for injecting a fuel-gas mixture in which the fuel stream is injected via injection ports of a fuel injection valve into distributor openings of a distributor line in a distributor housing. The fuel streams are injected in aimed fashion from the injection ports via fuel transport conduits into the distributor openings, which has an advantage of accurate fuel allocation to the various distributor openings and of maximally homogeneous mixture formation. The gas for the gas-fuel mixture flows out of a central gas delivery opening via a gas distributor chamber and via a respective gas gap to one distributor opening each, where it envelops the applicable fuel stream in which the gas and fuel is conducted to an intake tube or directly into the cylinder.
Claims19
A device for injecting a fuel-gas mixture into an intake tube or directly into cylinders of an internal combustion engine, which comprises a fuel injection valve including a valve closing body actuatable as a function of an opening state for delivery of fuel to a number of equally spaced injection ports (15) in an injection end (3) of a valve housing (4), a valve cap (7) is disposed at least in an axial direction between the valve housing (4) and a distributor housing (10), said valve cap (7) includes transport conduits (17) in alignment with said injection ports (15), said injection ports (15) and said transport conduits (17) correspond in number to the number of cylinders, said distributor housing (10) includes an axially aligned gas delivery opening (20) that extends concentrically with a longitudinal valve axis as well as including distributor lines (18) that include distributor openings (19) which are disposed concentrically with the injection ports (15) and transport conduits (17), said injection ports (15) are aimed toward said transport conduits, each of which discharge into one of the distributor openings (19) which is surrounded at least partially by a gas gap (28), said gas gap (28) extends from the gas delivery opening which surrounds and communicates with the distributor openings (19) and discharges gas at a fast rate which is aimed at the transport conduits (17) and the distributor openings (19), which gas surrounds the fuel discharged into each one of the distributor openings (19) from each of the transport conduits (17).
Dependencies are inferred from the claim text.