Fuel injection control device of the scramjet engine

摘要

PROBLEM TO BE SOLVED: To provide a fuel injection control device for a scramjet engine that can eliminate a choke phenomenon by using a simple configuration.;SOLUTION: A fuel injection control device for a scramjet engine includes a combustion flow passage leading from an intake side to an exhaust side via a combustion region and a fuel injection section that can inject fuel toward the combustion region, and performs supersonic combustion. The fuel injection device includes: a pressure detection section that can detect pressure in the combustion flow passage distributed from the intake side to the exhaust side; and a control section that can control the fuel injection section on the basis of the pressure detection section. When determining that a pressure rise position of pressure rise that can close the combustion flow passage exceeds a predetermined set pressure position and moves to the intake side in accordance with detected pressure distribution (Yes in step S3), the control section executes choke avoidance control for performing control so that the pressure rise position moves to the exhaust side of the set pressure position (step S4).;COPYRIGHT: (C)2015,JPO&INPIT