Rankine cycle waste heat recovery system
Abstract
A waste heat recovery (WHR) system connects a working fluid to fluid passages formed in an engine block and/or a cylinder head of an internal combustion engine, forming an engine heat exchanger. The fluid passages are formed near high temperature areas of the engine, subjecting the working fluid to sufficient heat energy to vaporize the working fluid while the working fluid advantageously cools the engine block and/or cylinder head, improving fuel efficiency. The location of the engine heat exchanger downstream from an EGR boiler and upstream from an exhaust heat exchanger provides an optimal position of the engine heat exchanger with respect to the thermodynamic cycle of the WHR system, giving priority to cooling of EGR gas. The configuration of valves in the WHR system provides the ability to select a plurality of parallel flow paths for optimal operation.
- Inventors:
- Issue Date:
- Research Org.:
- Cummins Inc., Columbus, IN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1215833
- Patent Number(s):
- 9140209
- Application Number:
- 13/679,885
- Assignee:
- Cummins Inc. (Columbus, IN)
- Patent Classifications (CPCs):
-
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- DOE Contract Number:
- EE0003403
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Nov 16
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
Citation Formats
Ernst, Timothy C., and Nelson, Christopher R. Rankine cycle waste heat recovery system. United States: N. p., 2015.
Web.
Ernst, Timothy C., & Nelson, Christopher R. Rankine cycle waste heat recovery system. United States.
Ernst, Timothy C., and Nelson, Christopher R. Tue .
"Rankine cycle waste heat recovery system". United States. https://www.osti.gov/servlets/purl/1215833.
@article{osti_1215833,
title = {Rankine cycle waste heat recovery system},
author = {Ernst, Timothy C. and Nelson, Christopher R.},
abstractNote = {A waste heat recovery (WHR) system connects a working fluid to fluid passages formed in an engine block and/or a cylinder head of an internal combustion engine, forming an engine heat exchanger. The fluid passages are formed near high temperature areas of the engine, subjecting the working fluid to sufficient heat energy to vaporize the working fluid while the working fluid advantageously cools the engine block and/or cylinder head, improving fuel efficiency. The location of the engine heat exchanger downstream from an EGR boiler and upstream from an exhaust heat exchanger provides an optimal position of the engine heat exchanger with respect to the thermodynamic cycle of the WHR system, giving priority to cooling of EGR gas. The configuration of valves in the WHR system provides the ability to select a plurality of parallel flow paths for optimal operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {9}
}