Patent · US Active

Gas-turbine lean combustor with fuel nozzle with controlled fuel inhomogeneity

US8646275B2 · kind B2 · utility

13Cited by

106References

18Claims

0Family size

Assignee

ROLLS-ROYCE DEUTSCHLAND LTD & CO KG · DE

Inventors

Leif Rackwitz · Rangsdorf, DE
Imon-Kalyan BAGCHI · Berlin, DE
Thomas Doerr · Berlin, DE

Key dates

Filing date	Mar 8, 2012
Grant date	Feb 11, 2014
Priority date	—
Expiry date	Mar 8, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF23R3/343
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A gas-turbine lean combustor includes a combustion chamber (2) and a fuel nozzle (1) which includes a pilot fuel injection (17) and a main fuel injection (18). The main fuel injection (18) includes central recesses (23) for a controlled inhomogeneous fuel injection, the number of said recesses on the circumference ranging from 8 to 40 and said recesses having an angle of inclination δ2 in circumferential direction of 10°≦δ2≦60° and an axial angle of inclination δ1 relative to the combustor axis (4) between −10°≦δ1≦90°.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.