Fluid handling system having dedicated EGR turbo-generator
AssigneeCaterpillar Inc.
InventorScott B. Fiveland
Life of this patent
Estimating the term…
Abstract
A fluid handling system for a use with an engine is provided. The fluid-handling system may have a first turbine connected to receive a portion of an exhaust flow from the engine, a first compressor driven by the first turbine to pressurize an airflow, and a heat exchanger configured to receive a remaining portion of the exhaust flow from the engine and the airflow from the first compressor. The fluid-handling system may also have a second turbine connected to receive the airflow from the heat exchanger, and a generator driven by the second turbine to generate power.
Claims19
A fluid-handling system for an engine, comprising:
- a first turbine connected to receive a first portion of an exhaust flow from the engine;
- a first compressor driven by the first turbine to pressurize a first airflow;
- a heat exchanger configured to receive a second portion of the exhaust flow from the engine and the first airflow;
- a second turbine connected to receive the first airflow from the heat exchanger;
- a generator driven by the second turbine to generate power;
- and
- wherein the second portion of the exhaust flow is directed into the engine for combustion.
A method of handling exhaust from an engine, comprising:
- combusting a mixture of air and fuel to generate a mechanical output and an exhaust flow;
- mechanically removing energy, via a first turbine, from a first portion of the exhaust flow;
- using the energy to pressurize an airflow;
- transferring heat from a second portion of the exhaust flow to the airflow;
- mechanically removing energy, via a second turbine, from the airflow after transferring the heat;
- converting the energy mechanically removed from the airflow to one of electrical energy, hydraulic energy, and kinetic energy;
- and
- directing the second portion of the exhaust flow after the energy has been removed to join combustion air.
A power system, comprising:
- an engine having an air duct and an exhaust duct;
- a first turbine fluidly connected to the exhaust duct to receive a first portion of an exhaust flow from the engine;
- a first compressor fluidly connected to the air duct and driven by the first turbine to pressurize a first airflow directed into the engine;
- a first heat exchanger configured to cool the first airflow before it is received by the engine;
- a second compressor driven by one of the first turbine, or a third turbine fluidly connected to the exhaust duct to receive the first portion of the exhaust flow, the second compressor configured to pressurize a second airflow;
- a second heat exchanger configured to receive a second portion of the exhaust flow from the engine and the second airflow from the second compressor;
- a second turbine connected to receive the second airflow from the second heat exchanger;
- a generator driven by the second turbine to generate electricity;
- and
- wherein the second portion of the exhaust flow is directed to the air duct of the engine.
Dependencies are inferred from the claim text.