Automatic starting control system for gas turbine engines

• US 3,310,937 A
• Filed: 08/20/1965
• Issued: 03/28/1967
• Est. Priority Date: 08/20/1965
• Status: Expired due to Term

• Current Assignee: Emile G. Smith
• Original Assignee: Emile G. Smith
• Inventors: Smith, Emile G.
• Application Number:
  US04/481,373
• Time in Patent Office: 585 Days
• US Class Current: 60/790
• CPC Class Codes: F02C 7/26 Starting; Ignition

Claims

1. IN A SYSTEM FOR AUTOMATICALLY CONTROLLING THE STARTING OF A GAS TURBINE ENGINE, SAID SYSTEM HAVING A PLURALITY OF ACCESSORIES INCLUDING A STARTER SOLENOID FOR CONTROLLING THE ENERGIZATION OF A STARTER MOTOR FOR ROTATING THE COMPRESSOR SHAFT OF THE ENGINE, A STARTING FUEL SOLENOID ACTUATED VALVE FOR CONTROLLING THE FLOW OF FUEL INTO A COMBUSTION CHAMBER, AN IGNITION SYSTEM FOR IGNITING SAID FUEL IN SAID COMBUSTION CHAMBER, AND A MAIN FUEL SOLENOID ACTUATED VALVE FOR CONTROLLING THE FLOW OF FUEL INTO SAID COMBUSTION CHAMBER, A SOURCE OF ENERGIZATION FOR SAID ACCESSORIES, EACH OF SAID ACCESSORIES BEING IN AN INITIAL ENERGIZATION STATE WHEREIN SAID STARTER MOTOR AND IGNITION UNIT ARE DE-ENERGIZED AND SAID VALVES ARE CLOSED, THE COMBINATION COMPRISING:

SWITCH MEANS FOR SELECTIVELY ESTABLISHING CONNECTIONS BETWEEN SAID SOURCE AND SAID ACCESSORIES WHEREBY THE STATE OF ENERGIZATION OF EACH OF SAID ACCESSORIES MAY BE SELECTIVELY CHANGED;

FIRST MEANS CONTROLLING SAID SWITCH MEANS FOR ESTABLISHING CONNECTIONS BETWEEN SAID SOURCE AND SAID ACCESSORIES TO CHANGE THE ENERGIZATION STATE OF EACH OF SAID ACCESSORIES TO A SECOND STATE, WHEREBY SAID STARTER MOTOR AND IGNITION UNIT ARE ENERGIZED AND SAID VALVES ARE OPEN;

MEANS RESPONSIVE TO A FIRST ENGINE PARAMETER FOR GENERATING A FIRST CONTROL VOLTAGE;

SECOND MEANS CONTROLLING SAID SWITCH MEANS, SAID SECOND MEANS BEING RESPONSIVE TO SAID FIRST CONTROL VOLTAGE ABOVE A PREDETERMINED LEVEL, SAID LEVEL REPRESENTING A SUCCESSFUL START OF SAID ENGINE, FOR CHANGING THE ENERGIZATION STATES OF SAID STARTING FUEL SOLENOID, SAID IGNITION UNIT, AND SAID STARTER SOLENOID TO THEIR RESPECTIVE INITIAL ENERGIZATION STATES, MEANS RESPONSIVE TO A SECOND ENGINE PARAMETER FOR GENERATING A SECOND CONTROL VOLTAGE;

THIRD MEANS CONTROLLING SAID SWITCH MEANS, SAID THIRD MEANS BEING RESPONSIVE TO SAID SECOND CONTROL VOLTAGE ABOVE A PREDETERMINED LEVEL, SAID LEVEL REPRESENTING AND ANBORMAL ENGINE CONDITION, FOR CHANGING THE ENERGIZATION STATE OF SAID STARTING FUEL SOLENOID, SAID MAIN FUEL SOLENOID, AND SAID IGNITION UNIT TO THEIR RESPECTIVE INITIAL ENERGIZATION STATES;

SAID THIRD MEANS INCLUDING ADDITIONAL MEANS, OPERATIVE AFTER A PREDETERMINED DELAY PERIOD FOLLOWING THE CHANGE OF ENERGIZATION STATE OF SAID MAIN FUEL SOLENOID, FOR CONTROLLING SAID SWITCH MEANS TO CHANGE THE ENERGIZATION STATE OF SAID STARTER SOLENOID TO ITS INITIAL STATE, WHEREBY AN ATTEMPTED START IS ABORTED.