Cummins Inc.

Cnh America LLC

The United States of America As Represented by the Administrator of the U.S. Environmental Protection Agency

Analytical Engineering, Inc.

Chn America LLC

Charles R Schenk

Joseph McDonald

Lester L Peters

Julius P Perr

David L Buchanan

David F May

Josh S Shao

Wayne A Eckerle

John M Janssen

Angela R May

Louis A Krempel

Bruce A Watson

Brian A Olson

Byron J Bunker

Christopher A Laroo

Lawrence James Sanchez

H Lee Fisher

Paul Anthony Way

Daniel C Stokes

Robert E Moss

Components of interest are captured on a resin column from a sample of exhaust gas from an operating vehicle. Makeup air is added to the residual exhaust gas flow exiting the resin column at a junction downstream of the resin column. Makeup air flow rate is determined using a laminar flow element and pressure and temperature gauges associated therewith. The sample and the makeup air are drawn together through a blower and the flow rate through the blower is calculated based on differential pressure across the blower and temperature of the gas drawn through the blower. The controller adjusts a proportional control valve in the makeup air line to regulate the sample flow rate, taken as the blower flow rate minus the makeup air flow rate, at a predetermined proportion of the exhaust gas flow rate.

Raw proportional toxic sampler for sampling exhaust

A device and method is disclosed for allowing a combine operator, from the operator's station, to automatically transversely position a pinch-point of a concave relative to a rotor of a combine in accordance with the clearance spacing set between the concave and the rotor, thereby minimizing operator effort without sacrificing combine performance.

Mechanism and method for automatically transversely positioning the pinch-point of a concave

A device and method is disclosed for effecting movement and extending the clearance spacing between a rotor of a combine and a concave to allow for easy removal of lodged material. The apparatus and method additionally provide a reduction in rotor actuation motor torque and an increase in rotor mechanical advantage. Finally, the apparatus and method provide a travel limit to prevent a concave from being raised into, and having contact with, a rotor of a combine.

Apparatus and method for effecting movement and clearance spacing of a concave

A preferred embodiment EGR valve permits exhaust gas to be induced into the intake line downstream of the compressor, while minimizing the need to reduce the size of the turbocharger. The preferred embodiment EGR valve exploits variations around the mean pressure in the EGR passage created by the engine cycle by selectively opening when the pressure in the EGR valve exceeds the pressure in the intake line. Thus, exhaust gas is recirculated even when the engine is running near torque peak. The preferred embodiment EGR valve also exploits the higher mean pressure in the exhaust line relative to the intake line at higher engine speeds by remaining open, in order to minimize the energy consumed in opening and closing the EGR valve.

Dual mode EGR valve

The present invention is directed toward a lift pump mounting bracket for an electronic control module cooler. In a preferred embodiment of the present invention, the lift pump is mounted directly to the ECM cooler by means of a pair of brackets which engage frustoconical-shaped grommets on either end of the lift pump. The grommets provide vibration dampening for the lift pump, while mounting the lift pump directly to the ECM cooler provides a convenient place for such mounting and, typically, ease of access should the lift pump need to be serviced. The frustoconical shapes of the mounting grommet allow the lift pump to be removed upon the disassembly of only a single one of the pair of mounting brackets, thereby making disassembly quicker and more convenient.

Lift pump mounting bracket for an electronic control module cooler

An exhaust aftertreatment system for use with an internal combustion engine includes at least one leg having a multi-stage NOx adsorber, with each NOx adsorber stage corresponding to a different temperature range of NOx adsorption. In a multi-pass aftertreatment system, a manifold has at least one inlet and a plurality of outlets. A plurality of legs are connected with a respective manifold outlet. Each leg has a NOx adsorber therein. At least one valve is positioned in association with at least one leg for at least partially opening and closing the at least one leg.

Exhaust aftertreatment system and method for an internal combustion engine

The method of treating a fuel lean exhaust containing NO and SO includes splitting the exhaust into major and minor portions for flow through multiple flow paths each of which contains a particulate trap and an absorber containing a NO oxidation catalyst and a nitrate absorbent. The major portion is passed through a flow path in the lean state at a first temperature to convert the NO to nitrate and the SO to sulfate. After the first period of operation flows are switched so that one flow path receives a minor exhaust portion for a second period of time during which fuel is injected into that flow path along with diversion of a portion of exhaust from another flow path through a bypass. When during the second period of operation the particulate trap reaches a predetermined temperature, the flow path is opened to an increased exhaust flow to transfer heat from the particulate trap to the NO absorber to bring the NO absorber to a temperature suitable for sulfation, at which time fuel and a small portion of exhaust gas are again introduced in order to effect the desulfation.

Method for NOx adsorber desulfation in a multi-path exhaust system

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South Bend, IN, United States of America

Charles R Schenk