1
Timothy C Ernst, Christopher R Nelson: Waste heat recovery system with constant power output. Cummins, Studebaker & Brackett PC, Tim L Brackett Jr, J Bruce Schelkopf, January 11, 2011: US07866157 (45 worldwide citation)

A waste heat recovery system for use with an engine. The waste heat recovery system receives heat input from both an exhaust gas recovery system and exhaust gas streams. The system includes a first loop and a second loop. The first loop is configured to receive heat from both the exhaust gas recover ...


2
Timothy C Ernst: Rankine cycle load limiting through use of a recuperator bypass. Cummins, Studebaker & Brackett PC, Tim L Brackett Jr, J Bruce Schelkopf, August 16, 2011: US07997076 (40 worldwide citation)

A system for converting heat from an engine into work includes a boiler coupled to a heat source for transferring heat to a working fluid, a turbine that transforms the heat into work, a condenser that transforms the working fluid into liquid, a recuperator with one flow path that routes working flu ...


3
Timothy C Ernst, Christopher R Nelson: Open loop Brayton cycle for EGR cooling. Cummins, Studebaker & Brackett PC, Tim L Brackett Jr, J Bruce Schelkoph, June 14, 2011: US07958873 (27 worldwide citation)

A system for reducing the temperature of waste heat from a waste heat source of a vehicle engine, including an open loop Brayton cycle having a cooler, a compressor, a turbine, and a shaft coupling the compressor to the turbine. Waste heat and compressed air from the compressor flow through the cool ...


4
Christophe Tricaud, Timothy C Ernst, James A Zigan: System and method for determining the net output torque from a waste heat recovery system. CUMMINS, Foley & Lardner, December 13, 2016: US09518497 (11 worldwide citation)

The disclosure provides a waste heat recovery system with a system and method for calculation of the net output torque from the waste heat recovery system. The calculation uses inputs from existing pressure and speed sensors to create a virtual pump torque sensor and a virtual expander torque sensor ...


5
Timothy C Ernst, Christopher R Nelson: Rankine cycle waste heat recovery system. CUMMINS INTELLECTUAL PROPERTY, Foley & Lardner, May 10, 2016: US09334760 (10 worldwide citation)

This disclosure relates to a waste heat recovery (WHR) system and to a system and method for regulation of a fluid inventory in a condenser and a receiver of a Rankine cycle WHR system. Such regulation includes the ability to regulate the pressure in a WHR system to control cavitation and energy con ...


6
Timothy C Ernst, Christopher R Nelson: Emissions-critical charge cooling using an organic rankine cycle. Cummins Intellectual Properties, Foley & Lardner, July 15, 2014: US08776517 (5 worldwide citation)

The disclosure provides a system including a Rankine power cycle cooling subsystem providing emissions-critical charge cooling of an input charge flow. The system includes a boiler fluidly coupled to the input charge flow, an energy conversion device fluidly coupled to the boiler, a condenser fluidl ...


7
Christopher R Nelson, Timothy C Ernst: Rankine cycle waste heat recovery system. Cummins Intellectual Property, Foley & Lardner, May 5, 2015: US09021808 (3 worldwide citation)

A Rankine cycle waste heat recovery system associated with an internal combustion engine is in a configuration that enables handling of exhaust gas recirculation (EGR) gas by using the energy recovered from a Rankine cycle waste heat recovery system. The system includes a control module for regulati ...


8
Timothy C Ernst, Christopher R Nelson, James A Zigan: Energy recovery system and method using an organic rankine cycle with condenser pressure regulation. Cummins Intellectual Properties, Foley & Lardner, January 14, 2014: US08627663 (3 worldwide citation)

An energy recovery system and method using an organic rankine cycle is provided for recovering waste heat from an internal combustion engine, which effectively controls condenser pressure to prevent unwanted cavitation within the fluid circulation pump. A coolant system may be provided with a bypass ...


9
Timothy C Ernst, Christopher R Nelson: Waste heat recovery system with constant power output. Cummins, Foley & Lardner, January 28, 2014: US08635871 (3 worldwide citation)

A waste heat recovery system for use with an engine. The waste heat recovery system receives heat input from both an exhaust gas recovery system and exhaust gas streams. The system includes a first loop and a second loop. The first loop is configured to receive heat from both the exhaust gas recover ...


10
Timothy C Ernst, Christopher R Nelson: Rankine cycle system and method. Cummins Intellectual Property, Foley & Lardner, September 9, 2014: US08826662 (3 worldwide citation)

A Rankine cycle waste heat recovery system uses a receiver with a maximum liquid working fluid level lower than the minimum liquid working fluid level of a sub-cooler of the waste heat recovery system. The receiver may have a position that is physically lower than the sub-cooler's position. A valve ...



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