Apparatus for injecting a fuel-air mixture
AssigneeRobert Bosch GmbH
InventorsJuergen Buchholz, Martin Maier
Life of this patent
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Abstract
An apparatus for injecting a fuel-air mixture, including a cup-shaped gas delivery hood with a bottom part of a jacket part between the valve end of a fuel injection valve and a gas delivery element, the jacket part has at least one gas delivery opening through which gas is injected and which strikes the injected fuel. The size of the opening cross section, which meters the gas, of the at least one gas delivery opening is accordingly fixed from the very outset and need not be adjusted. Moreover, because of a directional flow of the delivery of gas, very good atomization of the fuel is attained. The embodiment of the apparatus is especially well-suited for use in mixture-compressing internal combustion engines with externally supplied ignition.
Claims16
An apparatus for injecting a fuel-gas mixture, having a fuel injection valve that has a longitudinal valve axis and a valve closing element cooperating with a fixed valve seat, and having a gas guide element that has a stepped longitudinal bore extending concentrically with the longitudinal valve axis, one valve end of the fuel injection valve protrudes into the longitudinal bore, a cup-shaped gas delivery hood (57) having a bottom part (59) oriented toward the one valve end (3) of the fuel injection valve (1), and a jacket part (61) is disposed in the direction of the longitudinal valve axis (5) between the one valve end (3) of the fuel injection valve (1) and a retaining shoulder (55) of the gas guide element (9), the jacket part (61) of the gas delivery hood (57) extends in a direction of the retaining shoulder (55) of the gas guide element (9) and has at least one delivery opening (71).
Dependencies are inferred from the claim text.