Francis G Sollman

US Patent:

46447440, Feb 24, 1987

Filed:

Apr 19, 1985

Appl. No.:

6/725049

Inventors:

Gerald C. Mittendorf - South Bend IN
Francis G. Sollman - Jacksonville FL

Assignee:

Allied Corporation - Morristown NJ

International Classification:

F02C 602
F02C 928

US Classification:

60 3915

Abstract:

A control device for controlling an engine of a turbine power system having more than one engine is disclosed. The control device includes a proportional-integral-differential (PID) controller based on power turbine speed and a signal representing the difference between the torque of the engine being controlled and the torque of another engine in the power system, if the controlled engine is generating a torque less than that of the other engine. Accordingly, the control loop used in the device inherently tends to bring the torque of the controlled engine up to the torque of the other engine while maintaining power turbine speed equal to its reference, thereby equalizing the torques without expensive electrical connections between the controls of the two engines. Overrides are provided so that fuel also may be controlled based on the maximum torque of the engine being controlled, the total torque exerted by all the engine of the power system, the power tubine temperature, or by positive or negative gas generator speed rate of changes.

US Patent:

47455535, May 17, 1988

Filed:

Dec 24, 1984

Appl. No.:

6/685626

Inventors:

Elizabeth A. Raven - South Bend IN
Henry P. Tyler - South Bend IN
Francis G. Sollman - Jacksonville FL

Assignee:

Allied Corporation - Morristown NJ

International Classification:

F02D 3700

US Classification:

36443105

Abstract:

An engine control method and apparatus for optimizing an operating condition of an engine. A plurality of engine variables are determined and operated upon to direct the control of engine effectors so as to place the engine in an optimum operating condition. In particular, the engine effectors are controlled to minimize the fuel consumption of an engine operating at a steady-state. The system selectively moves a pair of engine effectors so as to determine the sensitivity of the engine variables to changes in effector outputs. Such sensitivities are updated during the system operation. The engine effectors are selectively moved as a function of the engine variable sensitivities in a direction to minimize fuel consumption without violating any predetermined operating limits of the engine variables. Once an optimum operating point is obtained, the system remains at rest and checks for changes in operating conditions that may require a new optimum to be determined.