公开(公告)号：US3859787A

公开(公告)日：1975-01-14

申请号：US43964874

申请日：1974-02-04

申请人： GEN MOTORS CORP

发明人： ANDERSON ROBERT D ,  TROTH DENNIS L

IPC分类号： F23R3/02 ,  F02C7/12 ,  F02C7/14 ,  F23C99/00 ,  F23R3/26 ,  F23R3/28 ,  F23R3/30 ,  F02C7/22

CPC分类号： F23R3/26 ,  F02C7/12 ,  F02C7/14 ,  F05D2250/411 ,  F23R3/28 ,  F23R3/30

摘要： A combustion apparatus for gas turbine engines particularly adapted to reduce emissions to meet automotive requirements. The fuel is laid on the wall of a cylindrical prechamber and evaporated from the wall by combustion air which is introduced through a swirler at the upstream end of the prechamber. The inner surface of the prechamber is artificially roughened by a grid of grooves to improve fuel evaporation. The fuel is laid on the wall from an annular manifold extending around the upstream end of the prechamber through tangential orifices leading from the manifold into the interior of the prechamber. The fuel manifold is cooled and shielded from heat by an air jacket. More air enters through entrance ports distributed around the prechamber toward its downstream end. The resulting lean fuel-air mixture is delivered past an annular flow dam at the outlet of the prechamber into a combustion or reaction zone which is abruptly enlarged from the prechamber. The structure causes turbulent flow, recirculation, and good mixing in the reaction zone. A dilution zone downstream at the reaction zone has a circumferential array of dilution air ports which are of such shape as to be varied nonlinearly in area by a sliding ring valve. The sliding ring valve is coupled to a second sliding ring valve which varies the area of the air entrance ports in the prechamber in reverse sense to the dilution air ports. A pilot fuel nozzle to aid in cold starts is mounted at the upstream end of the prechamber.

摘要翻译： 一种用于燃气涡轮发动机的燃烧装置，特别适用于减少排放以满足汽车要求。 燃料被放置在圆柱形预燃室的壁上，并通过燃烧空气从壁中蒸发，燃烧空气通过在预燃室上游端的旋流器引入。 预制室的内表面通过一个槽格被人为地粗糙化，以改善燃料蒸发。 燃料从环形歧管放置在壁上，环形歧管通过从歧管引导到预制室的内部的切向孔而延伸到预燃室的上游端。 燃料歧管被空气夹套冷却和隔离热量。 更多的空气通过分配在预燃室周围的入口进入其下游端。 所产生的贫燃料 - 空气混合物通过预燃室出口处的环形流动坝流入从预燃室突然增大的燃烧或反应区。 该结构在反应区域引起湍流，再循环和良好的混合。 在反应区下游的稀释区具有圆周阵列的稀释空气端口，其形状可以通过滑动环在非线性方面变化。 滑环阀联接到第二滑动环阀，其将预燃室中的空气入口的面积以相反的方式改变到稀释空气端口。 用于辅助冷启动的先导燃料喷嘴安装在预燃室的上游端。