Cummins Inc.

Cummins Engine Company, Inc.

Michigan Technological University

Peter Vinson Woon

Joseph Scot Roederer

Paul Douglas Free

Jason Robert Griffin

Stephen Sunadh Gidla

Alex Edward Priestley

Axel Otto Zur Loye

Andrew Guy Kitchen

Larry J Brackney

Eric K Bradley

Greg A Moore

Rod Radovanovic

A S Ghuman

Amarjit S Ghuman

Jay F Leonard

Julie A Wagner

Steven L Leffler

John H Johnson

Brian E Walsham

Amit A Kulkarni

Pallav Jha

Terry M Vandenberghe

John M Janssen

John A Rennekamp

Todd A Sheridan

Jacqueline M Yeager

Axel Zur Loye

Steven C Francis

Rodoljub Radovanovic

Angie R May

Pallav Scott Jha

An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, charge motion consistency is improved between engine cylinders and between the left bank and the right bank, thereby improving the consistency of combustion and power output, improving efficiency and reducing emissions (e.g., decreased particulate emissions (also described as smoke), hydrocarbon emissions, and NOx emissions), and further including an improved knock margin, improved fuel economy, wider rich and lean limits, etc.

Air intake system for internal combustion engine

An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.

An electric power generation system is disclosed, which includes a back-up electric power generator driven by a four-cycle internal combustion engine. The engine includes a plurality of reciprocating cylinders each rotatably coupled to a crankshaft, which drives the electric power generator. The engine also includes a compressor along an intake pathway to deliver pressurized air to the cylinders and a turbine along an exhaust pathway to power the compressor when driven by exhaust discharged from the cylinders. The engine is prepared to accept a generator load by increasing boost pressure provided by the compressor. This increase is accomplished by skip-firing the cylinders in a selected pattern, retarding ignition timing for the cylinders, or a combination of these techniques. A unique skip-fueling control pattern is also disclosed.

Operating techniques for internal combustion engines

A constant horsepower throttle progression control system and method. In order to improve driveability of a vehicle compared to prior art engine controllers, the present invention operates an engine so as to either produce a constant (or nearly constant) output horsepower at all engine speeds for any throttle position, or so as to produce an output horsepower equal to a predetermined percentage of the range between full rated power and motoring horsepower at all engine speeds for any throttle position. The predetermined percentage may or may not be equal to the percentage of full throttle represented by the throttle position, and may or may not be linearly related thereto.

Constant horsepower throttle progression control system and method

EGR induction supercharged or turbocharged internal combustion engine having EGR and EGR cooling in which EGR cooling is obtained through jacket water coolers and/or an air-to-air aftercooler. EGR induction is obtained via either low pressure (ambient) induction to the system intake, or via venturi or passive pump induction into the pressurized intake. Bypassing of the EGR cooler is used to reduce condensation and fouling in the EGR cooler and to provide warmer air to reduce light load and cold ambient hydrocarbon production. A passive or catalyzed particulate trap and crankshaft driven supercharger boosting system are provided to address engine response deterioration and particulate increase problems associated with EGR.

Cooled exhaust gas recirculation system with load and ambient bypasses

A turbocompound engine having a power turbine bypass valve and a control module for controlling opening and closing of the bypass valve. The control module opens the bypass valve for various operating conditions, such as at high altitudes, low speed/high load, and transient load conditions for improved engine operation.

Turbocompound engine with power turbine bypass control

A diesel engine exhaust system is provided with a particulate trap for collecting the products of incomplete combustion during the engine power cycle. A sensing mechanism including an electrode downstream of the trap and a signal generating circuit provides a positive indication of occurrence of regeneration of the trap. Charged particles generated during regeneration induce a charge of the electrode, that charge activates the signal generating circuit and it, in turn, produces an indication external of the exhaust system that trap regeneration is occurring. That indication can be in the operator's compartment.

Method and apparatus for sensing the regeneration of a diesel engine

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Columbus, IN, United States of America

Peter Vinson Woon