Low-Temperature Turbocompressor Cooling System for Engine Air Density

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Solution Overview

Problem

Existing turbocompressor systems face inefficiencies due to excess energy usage and increased air temperature, leading to reduced engine performance and increased risk of abnormal combustion, as they struggle to supply air at optimal density and pressure without overheating.

Innovation Solution

A low-temperature turbocompressor system that utilizes a cooling system to reduce air temperature before it reaches the intake turbine, allowing for denser air supply using the same energy, with a return valve regulating pressure and excess air flow to prevent overloading, and connecting turbines only when they start generating power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a turbocompressor is used to compress air into the engine, then the mass of air admitted into the cylinder increases, but the temperature of the air increases reducing its density

Engineering Contradiction:
Improvemass of airVSAvoidair temperature
Core Design Contradiction:
Quantity of substanceVSTemperature

Solution Approach 1:

The system is divided into two separate turbocompressor stages: a first turbocompressor for compression and a second turbocompressor for cooling. This segmentation allows independent optimization of compression and cooling functions, resolving the contradiction between increasing air mass and controlling air temperature.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A heat exchanger is introduced as an intermediary component between the two turbocompressors. The heat exchanger acts as a mediator to remove excess heat from the compressed air, enabling the system to maintain high air mass while controlling temperature and density.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stress or pressure

If pressure adjustment systems are used to control exhaust energy, then the engine is supplied with necessary air at safe pressure, but the system complexity increases

Engineering Contradiction:
Improveair pressureVSAvoidsystem complexity
Core Design Contradiction:
Stress or pressureVSDevice complexity

Solution Approach 1:

The second turbocompressor serves multiple functions: it cools the compressed air, recovers exhaust energy, and acts as a pressure regulator. By making the second turbocompressor multi-functional, the system achieves pressure control without adding separate regulation components, thereby reducing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The second turbocompressor automatically regulates pressure by utilizing the natural flow of exhaust gases and the pressure differential between the two stages. The system self-regulates through the inherent characteristics of the dual-turbocompressor configuration, eliminating the need for external pressure adjustment systems.

Inventive Principle:
Principle #25Self-service

3Productivity

If the energy supplied to the turbine is greater than necessary, then more air is compressed, but pressure adjustment systems are required to prevent over-pressurization

Engineering Contradiction:
Improveair compression outputVSAvoidpressure adjustment system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system dynamically balances the energy supplied to both turbocompressors based on operating conditions. The variable geometry mechanisms in both turbocompressors allow real-time adjustment of compression ratios and flow rates, enabling the system to maintain optimal productivity without over-pressurization, eliminating the need for separate pressure adjustment systems.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This system enhances engine performance by increasing power-to-weight ratio, enabling more aggressive compression ratios and ignition advances without pre-ignition issues, while maintaining energy efficiency and reducing fuel consumption.

Implementation Method 1

The temperature of the air compressed by the compressor is reduced by a cooling system

Methodology Applied
Scientific EffectCooling: Cooling

Implementation Method 2

The temperature of the air compressed by the compressor is reduced by a cooling system that can be an intercooler

Methodology Applied
Scientific EffectHeat exchanger: Heat Exchanger

Data Source

PatentUS11268435B2Structural arrangement in a low-temperature turbocompressor for an internal combustion engine
Publication Date: 2022.03.08 DUO ENGENHARIA CRIATIVA LTDA
  • US11268435B2 patent drawing
  • US11268435B2 patent drawing
  • US11268435B2 patent drawing

AI summary

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.