Cummins Inc.

Cummins Engine Company, Inc.

Cummins Filtration Ip, Inc.

Achates Power, Inc.

Andrew P Perr

Philipe F Saad

Rick Vaughan Lewis, Jr

Akintomide K Akinola

Peter K Herman

Brian W Schwandt

Mark V Holzmann

Scott P Heckel

Jerald J Moy

Kristopher R Bare

Michael T Zuroski

Dennis King Chan

Scott W Schwartz

Robin J Bremmer

John J Koszewnik

Gary Allan Vrsek

Thomas R Stover

Carol L Corbeels

Abby J Dawkins

Daniel E Kirtley

Timothy C Ernst

Andrew Guy Kitchen

James A Zigan

Dwight A Doig

Jeffrey D Jones

Marcus M Chui

William Ryan Dougherty

Scvott W Schwartz

Jr Rick Vaughan Lewis

A parent bore cylinder block of an internal combustion, opposed-piston engine includes cooling passages that are formed using a 3-D printed casting core. The casting core can include portions that are ceramic. The parent bore cylinder block can include multiple cylinders, each cylinder with cooling passages and turbulence inducing features in those cooling passages, particularly surrounding the central portions of the cylinders.

Parent bore cylinder block of an opposed-piston engine

A cylinder head [] mountable onto a cylinder block [] of an engine [] is disclosed. The cylinder head [] includes at least one fastener boss [] configured for receiving a fastener [], and the cylinder head [] is securely fastened onto the cylinder block [] of the engine [] by the fastener []. A boss cutout [] is formed on a lower portion of the at least one fastener boss [] that abuts the cylinder block [] such that a contact pressure balance of sealing pressures around the cylinder block [] is evenly distributed.

Cylinder head bolt boss cutouts

A cooling system for a cylinder head of an internal combustion engine includes a cylindrical seat configured to engage an exhaust valve, a first coolant jacket, and a first conduit. The exhaust valve seat defines an annular cooling passage extending along a circumference of the cylindrical seat. A wall of the cylindrical seat defines a first opening into the annular cooling passage and a second opening into the annular cooling passage, where the first opening is positioned diametrically opposite to the second opening. The first coolant jacket is positioned adjacent to a fire-deck of the internal combustion engine. The first conduit fluidly couples the first coolant jacket to the at least one of the first opening and the second opening to the annular cooling passage in the exhaust valve seat.

Engine cooling system including cooled exhaust seats

A fuel injector mounting assembly in an opposed-piston engine allows for mounting of a fuel injector in a cylinder block without significantly deforming the wall of the cylinder into which the injector is configured to deliver fuel. The fuel injector mounting assembly includes a clamping arrangement to clamp the fuel injector to the cylinder block, an elongate tubular sleeve that sheathes a nozzle portion of the fuel injector, and a spanner nut attached to the elongate tubular sleeve. Clamping loads applied to retain the fuel injector in the cylinder block are controlled by the spanner nut.

Fuel injector mounting assembly for an opposed-piston engine

The present disclosure provides a stud assembly insertable throughout a base block. The stud assembly includes a retention ring to engage with the base block and provide ease in assembly of the bearing cap stud assembly in an engine configuration without compromising load carrying characteristics of the design.

Main bearing cap stud configuration and assembly method

A combustion pre-chamber device for a spark ignition internal combustion engine is configured to engage a spark plug and be mounted to a cylinder head in communication with a combustion chamber of a cylinder of the engine. The combustion pre-chamber device includes a number of bores that open at an outer surface thereof that extend into the body and receive a coolant flow to provide cooling for a combustion pre-chamber of the combustion pre-chamber device.

Combustion pre-chamber device for an internal combustion engine

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 operator of the engine. Conditions may include cool or cold components, and insufficient working fluid. The operator may also request the clutch be disengaged, such as might be advantageous if the operator detects an operational problem with the WHR system or determines there is an advantage to operating the engine without the WHR system.

Waste heat recovery system including a clutched feedpump

An engine air management system is provided for an internal combustion engine generating blowby gas in a crankcase containing engine oil and oil aerosol. The system includes combinations of two or more of an air-oil separator, an air filter, and an acoustic silencer.

Engine air management system

An internal combustion engine includes an engine block having an oil rifle. A cylinder liner carried by the engine block includes a bottom end. A piston cooling nozzle coupled with the engine block includes an inlet in communication with the oil rifle, a tube, and a bracket coupled with the tube. The bracket engages the bottom end of the cylinder liner.

Piston cooling nozzle and positioning method for an internal combustion engine

A replaceable cylinder liner for an internal combustion engine. The position of the liner within the block is established by a midstop. An interference fit below the midstop seals the bottom end of a cooling passage that extends around the liner. The top end of the cooling passage is sealed by an o-ring, and when the engine is warmed up by an interference fit also. The top of the cooling passage is close to the top dead center position of the top piston ring, and reduces the temperature of the top piston ring.

Replaceable cylinder liner with improved cooling

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Columbus, IN, United States of America

Andrew P Perr