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US 12,065,959 B2Granted
Thermal management of exhaust gas with charge air heating
AssigneeCummins Inc.
InventorsTimothy C. Ernst, Daniel J. Mohr
Life of this patent
Estimating the term…
Abstract
Heating of the charge air in an intake is provided by a working fluid that is circulated through the intake to exchange heat with the charge air. The heated charge air can be used in response to a thermal management condition for an exhaust gas produced by operation of the internal combustion engine.
Claims16
A system for thermally managing an exhaust gas of an internal combustion engine including a plurality of cylinders, the system comprising:
- an exhaust for receiving the exhaust gas produced by combustion in the plurality of cylinders, and at least one aftertreatment device in the exhaust;
- an intake that provides a charge air to the plurality of cylinders, the intake including a charge air cooler (CAC) for cooling the charge air;
- and
- a heat transfer system that is configured to heat the charge air in the intake by a heat exchange to the charge air from a working fluid that is circulated through the intake, wherein the heat transfer system includes:
- a working fluid compressor for compressing the working fluid;
- a first condenser in the intake to transfer heat from the working fluid to the charge air and a second condenser to transfer heat from the working fluid to the environment;
- a first evaporator to transfer heat to the working fluid and a second evaporator to transfer cool air flow to an air conditioned space;
- and
- wherein working fluid flow from an outlet of the working fluid compressor is regulated to the first condenser and the second condenser.
6 more elements
A heat transfer system for heating a charge air in an intake of an internal combustion engine, the heat transfer system comprising:
- charge air plumbing configured to provide the charge air to the intake of the internal combustion engine;
- and
- a heat pump loop configured to circulate a working fluid to heat the charge air in the charge air plumbing, wherein the heat pump loop includes a first condenser in the intake to transfer heat from the working fluid to the charge air and a first evaporator to transfer heat to the working fluid;
- a cabin air conditioning loop including a second condenser to transfer heat from the working fluid to the environment and a second evaporator to transfer cool air flow to an air conditioned space;
- a working fluid compressor for compressing the working fluid;
- and
- wherein working fluid flow from an outlet of the working fluid compressor is regulated to the first condenser and the second condenser.
4 more elements
Dependencies are inferred from the claim text.