Cummins Inc.

Cummins Emission Solutions Inc.

Watlow Electric Manufacturing Company

Stanadyne Corporation

Cummins Intellectual Property, Inc.

Paul Douglas Free

Jason Robert Griffin

Peter Vinson Woon

Stephen Sunadh Gidla

Alex Edward Priestley

Joseph Scot Roederer

Nassim Khaled

Stephen M Holl

Colin L Norris

Taren DeHart

Vaibhav J Lawand

Lester L Peters

Donald J Benson

Jennifer Kay Light-Holets

Mark Denis Everly

John Robert Pendray

Corydon Edward Morris

Michael F Mattern

C Edward Morris, Jr

Jeffrey C Huang

Vaibhav Daramwar

Eric A Benham

Paul Peavler

Andrew D Selvy

David A Brush

Kavana Rao

Walter A Hoemann

Nicola Fachechi

Jeffrey R Diestelmeier

Jeffrey Diestelmeier

An actuator is driven by a brushless motor having a rotor with axially extended magnets, permitting axial movement of the rotor while maintaining overlap between the magnets and a stator secured in a fixed position. The rotor is engaged with a fixed structure by a connection such as a ramp or thread that translates rotation into axial movement of the rotor along a rotational axis of the actuator. A valve member coupled to the rotor moves axially between a closed position and a range of positions that regulate fluid flow through a valve. A motor control circuit applies power to the stator coils to rotate the rotor and coupled valve member to a desired axial position and maintain the rotor and valve member at the selected position. The rotor and valve member may be biased toward a rotational position corresponding to a closed position of the valve member.

Actuator and compact EGR valve

A controller for a dosing module including a pump, an inlet manifold coupled to the pump, a nozzle, an outlet manifold coupled to the nozzle, a first branch coupled to the inlet manifold and the outlet manifold and having a first flow restrictor and a first valve, a second branch coupled to the inlet manifold and the outlet manifold and having a second flow restrictor and a second valve, and a sensor coupled to the inlet manifold and the outlet manifold, includes an input/output interface and a processing circuit. The input/output interface is configured to electronically communicate with the first valve and the second valve. The processing circuit configured to selectively cause the first valve to be in a first valve first position, in which the first valve facilitates fluid communication from the inlet manifold to the outlet manifold through the first branch, and a first valve second position.

Reductant delivery systems and methods

The present disclosure provides a method of treating a diesel exhaust system that includes heating a reagent to a temperature such that at least a portion of the reagent is heated to a gaseous phase, injecting the reagent into a diesel exhaust stream upstream of a catalyst, and reacting the diesel exhaust with the heated reagent over the catalyst to convert NOinto Nand HO. The heating modulates a mass flow rate of the reagent by converting a state of matter of the reagent at least partially to the gaseous phase prior to or after being injected, and the heated reagent in the gaseous form reduces deposit formations within the diesel exhaust system.

Temperature-based control of reagent distribution

A dosing module includes an inlet manifold, an outlet manifold, a first branch, and a second branch. The inlet manifold is configured to selectively receive reductant from a pump. The outlet manifold is configured to selectively provide the reductant to a nozzle. The first branch is coupled to the inlet manifold and the outlet manifold. The first branch is configured to selectively provide the reductant from the inlet manifold to the outlet manifold. The first branch includes a first flow restrictor configured to restrict the reductant as the reductant is provided to the outlet manifold. The second branch is coupled to the inlet manifold and the outlet manifold. The second branch is configured to selectively provide the reductant from the inlet manifold to the outlet manifold separately from the first branch. The second branch includes a second flow restrictor that is configured to restrict the reductant.

A system and method are disclosed for improving the performance of an aftertreatment system by elevating its temperature above an activation temperature. According to at least one aspect of the present disclosure, the method includes injecting a quantity of a fuel into certain fueled cylinders of a plurality of combustion cylinders of an internal combustion engine, the plurality of combustion cylinders further including non-fueled cylinders. Exhaust from the fueled cylinders is directed through the aftertreatment system while uncombusted gas from the non-fueled cylinders is directed away from the aftertreatment system. In certain embodiments, the uncombusted gas may be directed into an intake manifold in fluid communication with the plurality of combustion cylinders through an orifice. The system includes an engine having exhaust valves to control flow of the exhaust and uncombusted gas and a controller configured to perform the operations of the method.

System and method to improve aftertreatment in an internal combustion engine

A combustion engine and a method of operating the combustion engine are disclosed. The method comprises supplying a charge gas to the combustion chamber through an intake port; discharging a cryogenic fuel in a liquid state from a fuel injector in fluid communication with the combustion chamber; closing an intake valve to close the combustion chamber; and actuating a piston during a compression cycle to compress the charge gas and the cryogenic fuel. At least a portion of the cryogenic fuel evaporates in the closed combustion chamber.

Cryogenic fuel injection and combustion

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.

Air intake system for internal combustion engine

A system and method of providing supplementary oil flow to an oil circuit of an internal combustion engine is described. The primary oil supply is from a mechanical oil pump. The supplementary oil supply is provided using a control system, one or more sensors, and an electrical oil pump. The system is beneficial in circumstances where the mechanical oil pump provides insufficient oil flow, including during engine shutdown.

System and method of augmenting low oil pressure in an internal combustion engine

A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.

Fuel injection pressure pulsation dampening system

A fuel injector control valve is provided that includes a drain circuit for directing the flow of fuel away from temperature sensitive components of a fuel injector in which the fuel injector control valve is positioned. The drain circuit includes at least one portion that directs drain fuel axially inward or toward a fuel injector orifice, and away from an actuator of the fuel injector.

Fuel injector with injection control valve assembly

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Hope, IN, United States of America

Paul Douglas Free