Cummins Filtration Ip, Inc.

Ashwin K Koleshwar

Chirag D Parikh

Arun P Janakiraman

Peter K Herman

Bradley A Smith

Christopher E Holm

Brian W Schwandt

Mark V Holzmann

Benjamin L Scheckel

Michael J Connor

Scott P Heckel

Saru Dawar

Kwok-Lam Ng

Vinay Kumar Joshi

Matthew T VandenBush

Merwyn I Coutinho

Lee A Peck

Daniel Y Hodges

Glen Schneider

Glenn B Schneider

Srikanth Varaganti

Michael W Klimmek

A crankcase ventilation system having a crankcase ventilation filter and a filter drain. The crankcase ventilation filter vents blow-by gases from a crankcase and separates oil from the blow-by gases. The crankcase ventilation filter drain collects oil separated by the crankcase ventilation filter and returns the separated oil to the crankcase or another component of the engine. A nozzle is coupled to a pressurized oil supply and directs an oil jet into a mixing bore of the system, which draws the oil back into recirculation. A valve is coupled to the filter drain and is configured to prevent collected oil from reentering the crankcase ventilation filter through an opening that connects the filter drain to the filter.

Crankcase ventilation system having an oil jet pump with an integrated check valve

A gas-liquid separator has a housing having an inlet for receiving a gas-liquid stream and an outlet for discharging a gas stream. A nozzle structure in the housing has a plurality of nozzles that receive the gas-liquid stream and accelerate the gas-liquid stream therethrough to create a plurality of gas-liquid jets. An inertial collector in the housing causes a sharp directional change of the gas-liquid jets, causing separation of liquid particles from the gas-liquid stream to produce the gas stream. The inertial collector has a porous collection substrate. According to the present disclosure, at least one of the following three conditions is met: (a) the porous collection substrate comprises fibers of small diameter and has low packing density; (b) the porous collection substrate comprises oleophobic fibers; and (c) the nozzle structure and the inertial collector are configured to allow for full expansion of the plurality of gas-liquid jets.

Inertial gas-liquid separator and porous collection substrate for use in inertial gas-liquid separator

A drain tube for an air-oil separator system, the tube being configured vertically in the system, the tube having an upper opening for receiving oil separated from air in the system, and a lower opening for releasing oil separated from air in the system, wherein the upper opening has a horizontal cross-sectional area that is greater than a horizontal cross-sectional area of the lower opening.

Drain tube for gas-liquid separation systems

A gas-liquid separator assembly has a flow passage providing expansion of and reduced flow velocity of the post-separation gas stream, and in some embodiments provides pre-escape regions facilitating partial pre-transition of some of the flow.

Gas-liquid separator with expansion transition flow

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

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Stoughton, WI, United States of America

Ashwin K Koleshwar