公开(公告)号：CA1198192A

公开(公告)日：1985-12-17

申请号：CA425723

申请日：1983-04-12

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MORRISON TERRY ,  HOWLETT JAMES J ,  ZAGRANSKI RAYMOND D

IPC: F02C3/10 ,  F02C9/28 ,  G05D1/00 ,  G05D1/08 ,  F02C9/26

Abstract: Helicopter Cruise Fuel Conserving Engine Control A digital fuel control (53) for a helicopter engine (20) controls fuel flow (52) to the engine in response to a turbine reference speed (62) determined in a normal mode (Fig. 5) to be a rated speed, in a fade-in mode (Fig. 6) to be incremented (117, 120) to an estimated optimum minimum speed (114, 115, 125), in an optimizer mode (Fig. 7) to be incremented (138) in a direction (137) leading to least fuel consumption (135), and in a fade-out mode (Fig. 8) to be incremented (151, 153) back to rated speed (154). The invention provides an engine reference speed which results in minimum fuel consumption during cruise flight.

公开(公告)号：DE3376992D1

公开(公告)日：1988-07-14

申请号：DE3376992

申请日：1983-04-15

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MORRISON TERRY ,  ZAGRANSKI RAYMOND D ,  HOWLETT JAMES J

IPC: F02C3/10 ,  F02C9/28 ,  G05D1/00 ,  G05D1/08

Abstract: A digital fuel control (53) for a helicopter engine (20) controls fuel flow (52) to the engine in response to a turbine reference speed (62) determined in a normal mode (Fig. 5) to be a rated speed, in a fade-in mode (Fig. 6) to be incremented (117, 120) to an estimated optimum minimum speed (114, 115, 125), in an optimizer mode (Fig. 7) to be incremented (138) in a direction (137) leading to least fuel consumption (135), and in a fade-out mode (Fig. 8) to be incremented (151, 153) back to rated speed (154). The invention provides an engine reference speed which results in minimum fuel consumption during cruise flight.