| 摘要 |
A nozzle ( 100 ) for air-assisted atomizing of a liquid fuel comprises a fuel feed passage ( 110 ) and an air feed passage ( 114 ) and a swirling chamber ( 118 ) from which fuel and air may be passed to an exit orifice ( 126 ) for emerging a cone shaped spray. An air bypass passage ( 122 ) is provided for leading a fraction of the air flow in the air feed passage ( 114 ) past the swirling chamber ( 118 ) and to an air exit ( 124 ) arranged such with respect to the exit orifice ( 126 ) that, during operation of the nozzle, air emerging through the air exit ( 124 ) reduces depositing of residues of fuel on a downstream surface ( 130, 132, 136 ) of the nozzle element ( 108 ). Grooves or other flow-guiding elements may confer swirling or rotation of air in or downstream of the air feed passage ( 114 ) and/or the air bypass passage ( 122 ).
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