Gas turbine engine

Patent metadata

Field	Value
Publication number	US-10473033-B2
Application number	US-201615297509-A
Country	US
Kind code	B2
Filing date	Oct 19, 2016
Priority date	Oct 19, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

An energy generation system for generating energy to be supplied to a chip zapping unit of for example a gas turbine engine comprises an ignition system, e.g. that of the gas turbine engine, the ignition system having an energy output and configured to supply operational energy to the energy output, and the chip zapping unit having an energy input, the energy input coupled to the energy output of the ignition system to receive the operational energy therefrom. Such an energy generation system generates the operational energy needed for the chip zapping unit directly from the ignition system thus avoiding pulse generation circuitry inside an electronic control unit.

First claim

The invention claimed is:

1. A gas turbine engine, comprising:
an ignition system, the ignition system having an energy output and that supplies operational energy, in the form of electrical energy pulses, to the energy output; and
a chip zapping unit having an energy input, the energy input coupled to the energy output of the ignition system to receive the operational energy therefrom,
wherein the ignition system comprises:
an ignition igniter having an ignition gap; and
an ignition exciter coupled to the ignition igniter, the ignition exciter comprising shunt circuitry, the shunt circuitry connected parallel to the ignition gap and coupled to the energy input of the chip zapping unit through the energy output of the ignition system, the ignition exciter further comprising a charge pump circuit and an electromagnetic interference (EMI) circuit, the charge pump circuit comprising a flyback transformer, a charge pump control circuit, filter capacitors, and an inrush protection circuit, the EMI circuit comprising an EMI filter, a shunt resistance, and a reverse protection diode.

2. The gas turbine engine of claim 1 , wherein the ignition system further comprises an energy input, and wherein the gas turbine engine further comprises:
an energy generation unit having an energy output and that supplies operational energy; and
an electronic control unit having an energy input and an energy output, the energy input of the electronic control unit coupled to the energy output of the energy generation unit, the energy output of the electronic control unit coupled to the energy input of the ignition system.

3. The gas turbine engine of claim 1 , wherein the chip zapping unit comprises an electromagnet coupled to receive the electrical energy pulses.

4. The gas turbine engine according of claim 1 , wherein:
the ignition exciter further comprises an energy pulse generation unit that is adapted to generate energy pulses to be applied to an ignition igniter ignition gap,
the energy of the energy pulses is excess energy stored in the ignition exciter and discharged to a ground plane by shunt circuitry each time the ignition exciter is turned off.

5. The gas turbine engine of claim 1 , wherein the ignition exciter further comprises a regulation circuit for regulating the operational energy to the chip zapping unit.

6. The gas turbine engine of claim 2 , wherein:
the energy generation unit is a permanent magnet alternator that outputs AC operational energy to the input unit of the electronic control unit;
the electronic control unit comprises energy rectification circuitry that rectifies the AC operational energy received from the permanent magnet alternator into DC operational energy; and
the energy output of the electronic control unit coupled to supply the DC operational energy to the energy input of the ignition system.

7. The gas turbine engine of claim 2 , wherein the energy output of the ignition system is a military style electrical connector connected to the shunt circuitry of the ignition igniter.

8. A gas turbine engine, comprising:
an ignition system, the ignition system having an energy output and operable to supply operational energy, in the form of electrical energy pulses, to the energy output; and
a chip zapping unit having an energy input, the energy input coupled to the energy output of the ignition system to receive the operational energy therefrom,
wherein the ignition system comprises:
an ignition igniter having an ignition gap; and
an ignition exciter coupled to the ignition igniter, the ignition exciter comprising shunt circuitry, the shunt circuitry connected parallel to the ignition gap and coupled to the energy input of the chip zapping unit through the energy output of the ignition system, the ignition exciter further comprising a charge pump circuit and an electromagnetic interference (EMI) circuit, the shunt circuitry comprising a parallel connection of at least a first serial connection of two capacitors interconnected at a first serial connection node and a second serial connection of two resistors interconnected at a second serial interconnection node, the first and second interconnection nodes coupled to each other.

Assignees

• Honeywell Int Inc

Inventors

• Kelly Jeff M

Classifications

• G01N15/1031

  by measuring electrical or magnetic effects · CPC title

• B03C1/28

  Magnetic plugs and dipsticks · CPC title

• F05D2260/98

  Lubrication · CPC title

• F16N29/04

  enabling a warning to be given; enabling moving parts to be stopped · CPC title

• F01D25/18 Primary

  Lubricating arrangements (of machines or engines in general F01M) · CPC title