Patent ID: 7810336
Filing Date: 2010-10-12
Classification: F02C,F05D,F23D

Abstract:
1. A fuel injection system comprising: at least one component defining a surface; an airflow passing along the surface, the airflow including a boundary layer; at least one fuel nozzle disposed within the component, wherein the at least one fuel nozzle is positioned to inject fuel into the airflow substantially at the boundary layer; a first turbulence generator positioned at least partially within the boundary layer, wherein the first turbulence generator is located downstream of the fuel nozzle, whereby the first turbulence generator causes disturbances in the boundary layer; a second turbulence generator positioned at least partially within the boundary layer, wherein the second turbulence generator is located downstream of the fuel nozzle and wherein the second turbulence generator is spaced from the first generator in the direction of the airflow, whereby the second turbulence generator causes disturbances in the boundary layer, one of the first and second turbulence generators being a protrusion extending from the surface, a passage extending through the protrusion from an upstream inlet with respect to the airflow to a downstream outlet with respect to the airflow, the inlet being in fluid communication with an upstream portion of the boundary layer and the outlet being in fluid communication with a downstream portion of the boundary layer, wherein a portion of airflow in the upstream portion of the boundary layer is received in the inlet and exits from the outlet into the downstream portion of the boundary layer; and a combustion area receiving the fuel and airflow.