1
Axel O Zur Loye, Larry J Brackney, James A Zigan: Apparatus and methods for determining start of combustion for an internal combustion engine. Cummins, Tim L Brackett Jr, Daniel S Song, Nixon Peabody, July 29, 2003: US06598468 (32 worldwide citation)

An apparatus and methods for effectively determining the start of combustion in a cylinder of an internal combustion engine where the start of combustion is calculated by obtaining cylinder pressure data (P), processing the cylinder pressure data (P) into a processed pressure value indicative of the ...


2
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 ...


3
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 ...


4
Leon A LaPointe, Chris L Sanger, James A Zigan, Daniel J Mohr, Laszlo D Tikk: Pre-combustion device for an internal combustion engine. Cummins, Krieg DeVault, March 4, 2014: US08662053 (3 worldwide citation)

An apparatus is disclosed including a first end defining an inner passage along a first inner surface of the first end, where the inner passage has threads structured to receive a spark plug. The apparatus further includes a second end opposite the first end and extending into a combustion chamber o ...


5
Timothy C Ernst, Christopher R Nelson, James A Zigan: Rankine cycle condenser pressure control using an energy conversion device bypass valve. Cummins Intellectual Properties, Foley & Lardner, April 1, 2014: US08683801 (1 worldwide citation)

The disclosure provides a waste heat recovery system and method in which pressure in a Rankine cycle (RC) system of the WHR system is regulated by diverting working fluid from entering an inlet of an energy conversion device of the RC system. In the system, an inlet of a controllable bypass valve is ...


6
Axel O Zur Loye, Larry J Brackney, James A Zigan: Apparatus and methods for determining start of combustion for an internal combustion engine. Nixon Peabody, January 16, 2003: US20030010101-A1 (1 worldwide citation)

An apparatus and methods for effectively determining the start of combustion in a cylinder of an internal combustion engine where the start of combustion is calculated by obtaining cylinder pressure data (P), processing the cylinder pressure data (P) into a processed pressure value indicative of the ...


7
Timothy C Ernst, James A Zigan: Waste heat recovery system. Cummins, PACCAR, Foley & Lardner, December 19, 2017: US09845711

A waste heat recovery system includes a Rankine cycle (RC) circuit having a pump, a boiler, an energy converter, and a condenser fluidly coupled via conduits in that order, to provide additional work. The additional work is fed to an input of a gearbox assembly including a capacity for oil by mechan ...


8
James A Zigan, Andrew P Perr, Timothy C Ernst: Waste heat recovery system including a clutched feedpump. Cummins, Foley & Lardner, January 31, 2017: US09556778

An engine including a WHR system includes a clutch positioned to engage or disengage a WHR feedpump that moves working fluid through a WHR circuit. The clutch engages or disengages the feedpump under certain operating conditions of the engine and/or the WHR system, and/or at the request of an operat ...


9
Leon A LaPointe, Edward J Lyford Pike, Daniel J Mohr, Ashish Gupta, James A Zigan: Air-fuel-ratio dithering using a dual fuel path source. CUMMINS IP, Foley & Lardner, June 7, 2016: US09359968

An apparatus for dithering fuel into an internal combustion engine includes a turbine that is powered by the internal combustion engine and a first fuel injector that injects a first fuel into an air stream to create a fuel/air stream. The apparatus also includes an air/fuel compressor that provides ...


10
Timothy C Ernst, James A Zigan: Waste heat recovery system including a mechanism for collection, detection and removal of non-condensable gas. CUMMINS, Foley & Lardner, June 20, 2017: US09683515

The disclosure describes a non-condensable gas collection, detection, and removal system for a WHR system that helps to maintain cycle efficiency of the WHR system across the life of an engine system associated with the WHR system. A storage volume is configured to collect non-condensable gas receiv ...



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