Pressure swirl injector with angled cone spray for fuel injection

摘要

A fuel injector has a swirl plate (48) about a valve assembly, including a valve seat (34) with an orifice (32) and a valve pin (20). When the valve is opened, the fuel is swirled by the swirl plate for passage through the orifice. The orifice has a portion which is angled relative to the axis of the injector to provide a conical swirling spray pattern (68) having a conical spray axis (66) angularly related to the axis (64) of the injector. In another form, the orifice is on-axis with the injector and receives a bent tube (72) having an upstream on-axis portion and a downstream angled portion to direct the swirling conical spray at an included obtuse angle relative to the axis of the injector.