Cummins Inc.

Tula Technology, Inc.

Scott Robert Bardakjy

Jennifer Kay Light-Holets

Shikui Kevin Chen

Xin Yuan

Sriram S Popuri

J Steven Kolhouse

Govindarajan Kothandaraman

David M Barnes

Avra Brahma

Xing Jin

Kristopher R Bare

Lyle E Kocher

Xiaobo Song

Agneya Turlapati

Yongsoon Yoon

Ligong Yang

Robert M Quarles

Olumayokun Ogunbekun

Kunlun Liu

Christopher A Brackman

Systems, devices, and methods are disclosed that during cylinder deactivation, including skipfire, at low engines speeds and low engine loads maintain adequate oil pressure of valvetrain components or hardware required for CDA and/or skipfire operation.

Maintaining oil pressure during cylinder deactivation operation

A system and method for mechanically timed cylinder deactivation includes an inner passage in the camshaft that supplies fluid for deactivating one or more valve opening mechanisms associated with the cylinders of an internal combustion engine.

Mechanically timed cylinder deactivation system

A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOemissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.

Engine aftertreatment recycling apparatus, and system and method using same

A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.

Systems and methods for exhaust gas recirculation

A system and method of integrating an engine having dynamic skip fire control with an exhaust gas recirculation system in a turbocharged internal combustion engine is described. An engine control system determines an appropriate firing pattern based at least in part on a desired exhaust gas recirculation flow rate. Signals from sensors in the intake manifold and exhaust system may also be used as part of a feedback loop to determine a desired exhaust gas recirculation flow rate.

Exhaust gas recirculation control in an internal combustion engine

Exhaust gas recirculation control in a dynamic skip fire engine

Intake manifold-cylinder head connectors and methods of assembling the same are disclosed. A distal jumper tube includes a distal jumper tube conduit with an upstream end having a first exterior engagement feature and a downstream end. A proximal jumper tube includes a proximal jumper tube conduit with an upstream end and a downstream end having a second exterior engagement feature. A middle jumper tube includes a middle jumper tube conduit with an upstream end having a third exterior engagement feature, and a downstream end having a fourth engagement feature. The first exterior engagement feature is removably coupled to the fourth exterior engagement feature, and the second exterior engagement feature is removably engaged to the third exterior engagement feature. The proximal jumper tube is in fluid receiving communication with an intake manifold conduit, and the distal jumper tube is in fluid providing communication with a cylinder head aperture.

Segmented manifold head connectors

Systems, methods and apparatus for connection of a multi-stage turbocharger to a heat exchanger are disclosed. The multi-stage turbocharger includes at least first and second compressors with respective first and second outlets. An air intake system is provided that connects each of the first and second compressor outlets to a common inlet of a heat exchanger. The air intake system includes a flow transition segment connected to the first and second compressor outlets, a diffuser segment, and a flow delivery segment connected to the inlet of the heat exchanger.

Multi-turbocharger connection with heat exchanger

Growing community of inventors

Columbus, IN, United States of America

Scott Robert Bardakjy