초록 ▼

The injection device has a nozzle body (10) with a movable valve needle (12). At the front end of the nozzle body (10) there is the discharge nozzle (11). The front end of the nozzle body (10) is surrounded by an ejector attachment (17) which has a suction chamber (19). An ejector duct (20) with a m

The injection device has a nozzle body (10) with a movable valve needle (12). At the front end of the nozzle body (10) there is the discharge nozzle (11). The front end of the nozzle body (10) is surrounded by an ejector attachment (17) which has a suction chamber (19). An ejector duct (20) with a mixing nozzle (23) and a diffuser (24) goes from the suction chamber (19) into the fuel chamber (21). Through air ducts (22) opening laterally into the suction chamber (19), air is drawn out of the fuel chamber (21) by the fuel jet leaving the discharge nozzle (11). This air mixes in the driving jet with the fuel, so that at the base of the driving jet there is already an intensive mixture formation.

대표청구항 ▼

An injection device for a diesel engine having a combustion chamber, in particular a diesel engine with direct injection, the injection device having a nozzle body which has a duct that is blockable and releasable by a controlledly movable valve needle, wherein the nozzle body duct opens into at lea

An injection device for a diesel engine having a combustion chamber, in particular a diesel engine with direct injection, the injection device having a nozzle body which has a duct that is blockable and releasable by a controlledly movable valve needle, wherein the nozzle body duct opens into at least one discharge nozzle, the improvement wherein the nozzle is surrounded by an ejector attachment which has (a) a mixing duct oriented axially with respect to the discharge nozzle, and leading from the discharge nozzle outlet into the combustion chamber, and (b) at least one lateral air duct opening leading from the combustion chamber into the mixing duct, whereby the injection jet leaving the discharge nozzle entrains air drawn in by suction from the combustion chamber via the air duct.