# US 2022/0307408 A1 · Structural arrangement in a low-temperature turbocompressor for an internal combustion engine

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- Number: US 2022/0307408 A1
- Document ID: US20220307408A1
- Status: Published application
- Kind: A1
- Application number: 17/586,369
- Filed: 2022-01-27
- Published: 2022-09-29
- Earliest claimed: 2017-07-05
- Assignees: Duo Engenharia Criativa Ltda
- Applicants: Duo Engenharia Criativa Ltda
- Inventors: Natal De Avila Antonini; Andre Schaan Casagrande; Bruno Hartmann Da Silva; Eduardo Donadel Basso; Vitor Tumelero Valente
- Web page: https://patentgrep.com/patent/US20220307408A1

## CPC

- F02B 37/013: with exhaust-driven pumps arranged in series
- F02B 29/0412: {Multiple heat exchangers arranged in parallel or in series}
- F02B 29/0481: {Intake air cooling by means others than heat exchangers, e.g. by rotating drum regenerators, cooling by expansion or by electrical means}
- F02B 37/004: {with exhaust drives arranged in series}
- F02B 37/04: Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
- F02B 37/10: at least one pump being alternatively {or simultaneously} driven by exhaust and other drive, {e.g. by pressurised fluid from a reservoir or an engine-driven pump}
- F02B 37/24: by using pumps or turbines with adjustable guide vanes
- F02B 39/04: Mechanical drives; Variable-gear-ratio drives (non-mechanical pump drives having variable gear ratio F02B39/08)
- F02B 39/085: {the fluid drive using expansion of fluids other than exhaust gases, e.g. a Rankine cycle}
- 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)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A low-temperature turbocompressor structural arrangement for an internal combustion engine for using energy that is available but unused during operation to cool the air supplied to the engine by supercharging. The temperature of the air compressed by the compressor is reduced by a cooling system and the air is then conveyed to a further turbine actuated by the intake air flow of the engine. The structural arrangement may be mounted in full or in part, and also each component may be fitted into existing systems.

## Claims

### Claim 1

“The low-temperature turbocompressor structural arrangement for an internal combustion engine” relates to a system for using the energy that is available but unused during operation of an internal combustion engine to cool the air supplied to said engine by supercharging, applicable to internal combustion engines of any type, characterized in that it supplies the engine with air that is colder and therefore denser than a common turbocompressor, and does so using the same amount of energy as consumed by this latter.

### Claim 2

“The low-temperature turbocompressor structural arrangement for an internal combustion engine” relates to a system for using the energy that is available but unused during operation of an internal combustion engine to cool the air supplied to said engine by supercharging, applicable to internal combustion engines of any type, as described in 001, formed by a system comprising a turbocompressor and turbines and characterized in that the turbocompression system is formed by the exhaust gas turbine (T1) rigidly connected to the compressor (C), in which said compressor conveys the fluid to a fluid cooler that can be an intercooler (IC), but that is not limited to this or other types of heat exchanger, nor to a specific coolant fluid, since any type can be used, and sequentially, the flow of cooled compressed air is conveyed to an intake gas turbine (T3) with pressure regulated by a return valve (V) that prevents the overloading of the engine (M) and directs the excess flow to a return gas turbine (T2) that returns the air to the inlet of the compressor (C), in which the turbines T2 and T3 are rigidly connected to the compressor (C) and to the exhaust gas turbine (T1).

### Claim 3

“The low-temperature turbocompressor structural arrangement for an internal combustion engine” relates to a system for using the energy that is available but unused during operation of an internal combustion engine to cool the air supplied to said engine by supercharging, applicable to internal combustion engines of any type, as described in 1 and 2, with alternative structures characterized in that the system can use compressors and turbines of variable geometry or any other compressors or turbines that can be installed on the same shaft, with any type of assembly constraining the movement thereof, include multiple stages with turbocompressors on separate shafts or on the same shaft as the first, be used in conjunction with other air compressors, mechanical (FIG. 6) or otherwise, or even with additional turbocompressors, all in series (FIG. 5) or in parallel (FIGS. 2, 3 and 4) with the former, use compressors and turbines of variable geometry, with multiple stage expansion and/or compression, in two- or four-stroke Otto-cycle or diesel engines, using additional heat exchangers and any coolant fluid, with the option of assembling fully or partially as required, in which each component part can be adapted to pre-existing systems.

### Claim 4

(canceled)