Cummins Filtration Ip, Inc.

Fleetguard, Inc.

Nelson Industries, Inc.

Msp Corporation

Scott P Heckel

Jerald J Moy

Roger L Zoch

Gregory W Hoverson

Brian W Schwandt

Peter K Herman

Jeffrey S Morgan

Kelly Ann Detra

Caryn J Kindkeppel

Pathikrit T Banerjee

Guillermo Alberto Smith

Matthew T VandenBush

Barry Mark Verdegan

Scott W Schwartz

Michael J Connor

Tadeusz Jaroszczyk

Christopher E Holm

Eric A Janikowski

Stephen L Fallon

Mark A Terres

Mark V Holzmann

Chirag D Parikh

Z Gerald Liu

Kent Jeffrey Kallsen

Arun P Janakiraman

Andrew P Perr

Michael T Zuroski

Himani Deshpande

Shiming Feng

Howard E Tews

William C Haberkamp

Gerard Malgorn

Mark J Johnson

Jon S Wake

Saru Dawar

Benoit Le Roux

Rohit Sharma

Benjamin Y H Liu

Bradley A Smith

Anthony Barreteau

Kelly R Schmitz

Jean-Luc Guichaoua

Larry T Gunderson

Murray R Schukar

Bryan P Steffen

Ashwin K Koleshwar

Glen Schneider

Brad Henke

Ananth Kuchimanchi

Jean-Luc Goichaoua

Scvott W Schwartz

Caryn J Christianson

Douglas K Benham

Disclosed are multiple stage rotating coalescer devices comprising a first stage and a second stage. The first stage may include a rotating coalescing element comprising coalescing media. The second stage is positioned either upstream or downstream or the first stage. The second stage may include one of: (i) a rotating cone stack separator, or (ii) a separate rotating coalescing element comprising coalescing media.

Multiple stage rotating coalescer devices

An internal combustion engine crankcase ventilation rotating coalescer includes an annual rotating coalescing filter element, an inlet port supplying blow by gas from the crankcase to the hollow interior of the annular rotating coalescing filter element, and an outlet port delivering clean separated, air from the exterior of the rotating element. The direction of flow by gas inside-out, radially, outwardly from the hollow interior to the exterior.

Crankcase ventilation inside-out flow rotating coalescer

A closed crankcase ventilation system for an internal combustion engine includes a return duct with a variably controlled air-oil coalescer. In a turbocharger version, cleaned separated air is provided to the turbocharger inlet, and the coalescer is variably controlled according to a given condition of the turbocharger and/or the engine and/or the coalescer.

Closed crankcase ventilation system

An internal combustion engine crankcase ventilation rotating coalescer includes an annular rotating coalescing filter element, an inlet port supplying blowby gas from the crankcase to the hollow interior of the annular rotating coalescing filter element, and an outlet port delivering cleaned separated air from the exterior of the rotating element. The direction of blowby gas is inside-out, radially outwardly from the hollow interior to the exterior.

An engine air management system is provided for an internal combustion engine generating blowby gas in a crankcase containing engine oil and oil aerosol. The system includes combinations of two or more of an air-oil separator, an air filter, and an acoustic silencer.

Engine air management system

A filter element has a reinforcement band or ring along at least a portion of the perimeter thereof and performing a support function thereat preventing or minimizing damage upon attempted percussive cleaning of the filter element by service personnel striking the perimeter against an impact surface. Alternatively, a failure band or ring is provided along at least a portion of the perimeter and performs a designated failure function to a failure condition thereat upon attempted percussive cleaning, with the failure condition providing at least one of: a) an indication to service personnel that the filter element has been damaged and should not be re-installed; and b) a deformed condition preventing re-installation.

Filter element with percussion band

A crankcase ventilation system for an internal combustion engine includes a separator and an amplifier increasing at least one of flow and pressure along the flow path through the separator to provide higher separation efficiency.

Crankcase ventilation system with variable blower for increased efficiency

An inertial gas-liquid separator removes liquid particles from a gas-liquid stream and has a variable orifice area variable along an axial direction and dependent upon axial movement of a plunger relative to a housing sleeve.

Inertial gas-liquid separator with axially variable orifice area

Growing community of inventors

Stoughton, WI, United States of America

Scott P Heckel