International Engine Intellectual Property Company, LLC

Paul Laurence Berke

James T Beaucaire

Michael A Majewski

David V Rodgers

Paul A Wieshuber

Felicia Centeno

Andrei Makartchouk

Vadim Olegovich Strots

Sean C Wyatt

Matthew Albert Tyo

Steve J Dickerson

Massimo Fontana

Vijayasarathy Subramanian

Louis Maza

Tallis Ingram

Joseph Domenico

Vadim Strots

A Diesel Emissions Fluid (DEF) Thawing arrangement is provided for use with a vehicle having an engine, an Engine Control Module (ECM), an exhaust system, and an SCR catalytic device. A DEF injection system is connected to the exhaust system and to the ECM. A DEF tank is connected to the DEF injection system. An exhaust pipe branch is connected to the exhaust system. A heat exchanging apparatus is connected to the exhaust pipe branch and is configured to exchange heat from exhaust gas within the exhaust pipe branch to the DEF in the DEF tank. The heat exchanging apparatus may be an exhaust gas to DEF heat exchanger located at least partially within the DEF tank, or may be an exhaust gas to coolant heat exchanger connected to an engine coolant circuit and a coolant to DEF heat exchanger located at least partially within the DEF tank.

DEF thawing apparatus and method for diesel engine SCR systems

A regeneration disable control system () of a vehicle having a power take off device () that is run off a motor () which is powered by at least one battery (), and an engine () for recharging the at least one battery and for regenerating a diesel particulate filter (), includes a hybrid controller (). The hybrid controller () sends a signal to an engine controller () to indicate whether hybrid-PTO mode is enabled. If the hybrid-PTO mode is enabled, the engine controller () determines whether regeneration of the diesel particulate filter () is required. If regeneration is required, the engine controller () sends a signal to a regeneration inhibitor () to disable the engine () from initiating a regeneration event.

System for disabling diesel particulate filter regeneration during electric operation

A system and method for initiation and control of passive regeneration () of a diesel particulate filter (), and the integration of that regeneration strategy with an active regeneration strategy () and a strategy (A) for inhibiting passive regeneration. Passive regeneration can be initiated by driver actuation of an instrument panel device, such as a switch, while the vehicle is parked with the engine idling provided that certain conditions confirming that the vehicle is parked and the engine is at proper temperature are satisfied. Regeneration is inhibited by driver actuation of another switch for a maximum amount of time that may be shorter, or even prevented if DPF loading is too high.

System and method for inhibiting regeneration of a diesel particulate filter

An engine control system () causes fuel to be post-injected into combustion chambers by a 'buffering' or 'bucketing' strategy (instructions-in FIG.) to mitigate fuel system cavitation during regeneration of a diesel particulate filter ().

Post injection bucketing strategy to avoid hardware cavitation

The method for regeneration of a diesel particulate filter of a vehicle equipped with a hybrid engine, wherein the temperature of the exhaust exiting the diesel engine is increased above a predetermined level by increasing load thereon, through optimization of interaction between the diesel particulate filter aftertreatment system and the hybrid engine control through messaging via a communication bus is disclosed. The load on the engine may be increased with or without the assistance of the electric motor/generator of the hybrid engine, and will not affect required acceleration/deceleration of the vehicle.

Method for diesel particulate filter regeneration in a vehicle equipped with a hybrid engine background of the invention

A device and method for catalytic reduction of NOx in gaseous products of a combustion process before entry into the atmosphere. The gaseous and particulate products of a combustion process flow radially through a radial flow particulate filter element () that is effective to trap particulate matter, and are then directed axially through a collector (). An injector () introduces a reductant into an axial end of the collector for entrainment with axial flow through the collector in a direction away from the injector. Flow leaving the collector is directed through an SCR catalyst () where catalytic reduction of NOx occurs.

Urea SCR diesel aftertreatment system

An algorithm or diagnostic for detecting and alarming unintended exothermic conditions in exhaust after treatment components selectively detects alarming temperature variations in exhaust after treatment components when caused by internal unintended exothermal events, rather than transient conditions that are externally driven. Not only are the output temperature and the delta temperature (T_out&#x2212;T_in) across the component monitored in each after-treatment device, but also the input temperature is deeply analyzed through its recent history data in order to determine if any input variations caused the output changes.

Unintended exothermal reactions monitoring for diesel after-treatment systems

A method for regenerating a diesel particulate filter () in the exhaust system () of an engine (). When a request to regenerate the device is issued, a control system () operates the engine to begin conditioning exhaust. The conditioning process comprises a warming phase that occurs prior to initiation of regeneration and a heating phase during which regeneration can occur. During the process, data related to the warming phase and the heating phase is evaluated. The engine is operated to terminate the process prior to having reduced the amount of trapped particulate matter to a target amount when evaluation of the data discloses that the process should be terminated.

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Chicago, IL, United States of America

Paul Laurence Berke