# US 10,119,460 B2 · Integrated turboshaft engine

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- Number: US 10,119,460 B2
- Document ID: US10119460B2
- Status: Granted
- Kind: B2
- Application number: 14/489,565
- Filed: 2014-09-18
- Published: 2016-11-03
- Granted: 2018-11-06
- Earliest claimed: 2014-09-18
- Assignees: General Electric Company
- Applicants: General Electric Company
- Inventors: Roy James Primus; Adam Edgar Klingbeil; Narendra Digamber Joshi; Omowoleola Chukwuemeka Akinyemi; Thomas Michael Lavertu
- Web page: https://patentgrep.com/patent/US10119460B2

## CPC

- F02B 63/04: for electric generators
- F01D 15/10: Adaptations for driving, or combinations with, electric generators
- F02C 3/10: with another turbine driving an output shaft but not driving the compressor
- F02C 3/13: having variable working fluid interconnections between turbines or compressors or stages of different rotors {(controlling flow ratio between different flows of multi-flow jet-propulsion plant, e.g. ducted fan F02K3/075)}
- F02C 6/00: Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C 6/08: the gas being bled from the gas-turbine compressor
- F02C 6/12: Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
- F02C 6/20: Adaptations of gas-turbine plants for driving vehicles
- F02D 41/0007: {for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12)}
- F05D 2220/40: in turbochargers
- F05D 2220/76: an electrical generator
- Y02T 10/12: Improving ICE efficiencies
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A system includes an engine coupled with a primary shaft that drives a first electric generator for generating electrical power via a gear subsystem. The system also includes a turbocharger assembly having at least one gas turbine engine configured for driving the primary shaft and coupled in parallel with the engine. The turbocharger assembly includes multiple compressors configured to provide a flow of compressed fluid into both the engine and the at least one gas turbine engine and multiple turbines configured to utilize exhausts from both the engine and the one gas turbine for driving the primary shaft. Further, the system includes a controller configured to operate a plurality of valves for controlling optimal intake fluid pressure into the engine and the turbocharger assembly and fuel injections into the engine and the at least one gas turbine engine.

## Claims

### Claim 1

A system comprising:
an engine coupled to a primary shaft via a gear subsystem, the primary shaft driving a first electric generator for generating electrical power;
a turbocharger assembly comprising at least one gas turbine engine configured for driving the primary shaft and coupled in parallel with the engine; wherein the turbocharger assembly comprises a first stage compressor and a second stage compressor, wherein the first stage compressor compresses fluid and directs a first portion of the compressed fluid to the engine and a second portion of compressed fluid into the second stage compressor for further compression, wherein the second stage compressor directs the second portion of the compressed fluid into a primary combustor of the at least one gas turbine engine; wherein the turbocharger assembly further comprises a first stage turbine and a second stage turbine, wherein the first stage turbine receives a first flow of exhaust from the primary combustor, and wherein the second stage turbine receives the first flow of exhaust from the first stage turbine and a second flow of exhaust from the engine; wherein the turbocharger assembly further comprises a secondary combustor located on an exhaust flow line downstream of the engine prior to the second stage turbine; and
a controller configured to operate a plurality of valves for controlling intake fluid pressure into the engine and the turbocharger assembly, and the controller is further configured for controlling fuel injection into the engine and the at least one gas turbine engine,
wherein the controller is configured to operate both the engine and the at least one gas turbine engine at maximum power during full load operation of the system, and
wherein the controller is configured to operate the engine and disable the at least one gas turbine engine during part load operation of the system.

### Claim 2 (depends on 1)

The system of claim 1, wherein the engine is a piston-based reciprocating engine, a rotary engine, or a volume displacement mechanism engine.

### Claim 3 (depends on 1)

The system of claim 1 further comprising a third stage turbine configured to receive exhaust from the second stage turbine.

### Claim 4 (depends on 1)

The system of claim 1, wherein the controller is configured to operate the at least one gas turbine engine at a reduced power.

### Claim 5 (depends on 1)

The system of claim 1, wherein the engine drives a secondary shaft that is coupled to a second electric generator.