DESIGN AND PERFORMANCE OF THROTTLE-TYPE FUEL CONTROLS FOR ENGINE DYNAMIC STUDIES

摘要

The results of an analytical and experimental investigation of the steady-state and dynamic characteristics of three types of throttlecontrolled fuel systems are presented. The three systems are (l) a throttle with regulated upstream pressure, {2} a throttle plus bypass differential-pressure regulator, and (3) a throttle plus reducing-valve differential-pressure regulator with regulated supply pressure. Performance and stability criteria based on a linearized analysis are presented for the three systems.nExperimental data for the three systems show (l) the effect of output pressure on the controlled flow, (2) the response of output flow to step changes in throttle area, and (3 J the response of output flow to a sinusoidal variation in throttle area.