Cummins Inc.

Rick Vaughan Lewis, Jr

Philipe F Saad

Andrew P Perr

Robin J Bremmer

Akintomide K Akinola

Nikhil Jayant Ajotikar

Francois Ntone

Dennis King Chan

Johnny Chung-Yin Tsai

Carlos Alcides Lana

Andrew Guy Kitchen

Dwight A Doig

Jingxuan Liu

Stephen Russell Cox

Jeffrey D Jones

Trideep Singh

Yilun Liu

William Ryan Dougherty

Johnny C Tsai

Systems, methods and apparatus are disclosed for providing reduced engine start times for a fumigation type internal combustion engine. A bypass is provided that directly connects the air-fuel mixer upstream of the compressor to the intake manifold, providing the air-fuel mixture to the intake manifold during engine startup.

Bypass system for engine startup

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

Two-stage engine charge air system with branch conduits

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 aftercooler is provided comprising a housing, an outlet diverter coupled to the housing and having an outlet port, and an inlet diffuser comprising a forward wall having a peripheral rim coupled to the housing, an upper wall connected to the forward wall, a lower wall connected to the forward wall, a first side wall connected to the upper wall and the lower wall and having a first end disposed adjacent the peripheral rim and a second end disposed adjacent an inlet port of the inlet diffuser, a second side wall connected to the upper wall and the lower wall and having a first end disposed adjacent the peripheral rim and a second end disposed adjacent the inlet port, and a plurality of fins disposed within an interior volume of the inlet diffuser collectively distributing air across an outlet opening of the inlet diffuser for delivery to the housing.

Inlet diffusers for a two-stage engine charge air system

Growing community of inventors

Franklin, IN, United States of America

Rick Vaughan Lewis, Jr