1
Alexander Gorel, John Lawrence Calabrese: Low pressure EGR system for diesel engines. Engelhard Corporation, Richard A Negin, October 16, 2001: US06301887 (135 worldwide citation)

A low pressure EGR system suitable for use as a passive retrofit system is disclosed for moving vehicles equipped with a diesel engine. The EGR loop inlet is positioned upstream of the exhaust particulate filter and downstream of the turbine to utilize backpressure created by the exhaust particulate ...


2
Joseph A Patchett, Rudolfus Petrus Verbeek, Karl Richard Grimston, Gary Wayne Rice, John Lawrence Calabrese, Mathijs Van Genderen: Control system for mobile NOx SCR applications. Engelhard Corporation, TNO Automotive, Richard A Negin, July 9, 2002: US06415602 (105 worldwide citation)

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time ...


3
Joseph A Patchett, Rudolfus Petrus Verbeek, Karl Richard Grimston, Gary Wayne Rice, John Lawrence Calabrese, Mathijs Van Genderen: Control system for mobile NOx SCR applications. Engelhard Corporation, Richard A Negin, December 16, 2003: US06662553 (57 worldwide citation)

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time ...


4
Joseph A Patchett, Rudolfus Petrus Verbeek, Karl Richard Grimston, Gary Wayne Rice, John Lawrence Calabrese, Mathus Van Genderen: Control system for mobile NOx SCR applications. Engelhard Corporation, Richard A Negin, December 19, 2006: US07150145 (47 worldwide citation)

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time ...


5
Tilman Wolfram Beutel, John Lawrence Calabrese: Emission control system for vehicles powered by diesel engines. Engelhard Corporation, Richard A Negin, June 6, 2006: US07055311 (40 worldwide citation)

An NOx emission system for diesel powered vehicles has a “Y” exhaust system with an NOx adsorber catalyst in each leg and an oxidation catalyst in the combined leg. One bank of cylinders sends exhaust gases to one of the “Y” legs while a second bank of cylinders send exhaust gases to the other “Y” l ...


6
Joseph A Patchett, Rudolfus Petrus Verbeek, Karl Richard Grimston, Gary Wayne Rice, John Lawrence Calabrese, Mathijs Van Genderen: Control system for mobile NOx SCR applications. Engelhard Corporation, TNO Automotive, Richard A Negin, June 24, 2003: US06581374 (31 worldwide citation)

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time ...


7
Joseph A Patchett, Rudolfus Petrus Verbeek, Karl Richard Grimston, Gary Wayne Rice, John Lawrence Calabrese, Mathus Van Genderen: Control system for mobile NOx SCR applications. Engelhard Corporation, Chief Patent Counsel, Engelhard Corporation, July 8, 2004: US20040128982-A1

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time ...


8
Tilman Wolfram Beutel, John Lawrence Calabrese: Emission control system for vehicles powered by diesel engines. Gus T Hampilos, Engelhard Corporation, March 4, 2004: US20040040287-A1

An NOx emission system for diesel powered vehicles has a “Y” exhaust system with an NOx adsorber catalyst in each leg and an oxidation catalyst in the combined leg. One bank of cylinders sends exhaust gases to one of the “Y” legs while a second bank of cylinders send exhaust gases to the other “Y” l ...


9
Joseph A Patchett, Rudolfus Petrus Verbeek, Karl Richard Grimston, Gary Wayne Rice, John Lawrence Calabrese, Mathijs Van Genderen: Control system for mobile NOx SCR applications. Engelhard Corporation, Stephen I Miller Chief Patent Counsel, Engelhard Corporation, October 24, 2002: US20020152745-A1

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time ...


10
Joseph A Patchett, Rudolfus Petrus Verbeek, Karl Richard Grimston, Gary Wayne Rice, John Lawrence Calabrese, Mathijs Van Genderen: Control system for mobile NOx SCR applications. Engelhard Corporation, Stephen I Miller, Chief Patent Counsel, October 17, 2002: US20020148220-A1

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time ...