Inertial impactor for closed crankcase ventilation
AssigneeDetroit Diesel Corporation
InventorGregory Braziunas
Life of this patent
Estimating the term…
Abstract
An inertial impactor that uses gas stream flow rate to separate oil particles in internal combustion engine crankcase emissions. The inertial impactor is particularly adapted for use in closed crankcase ventilation systems. The oil particles have a particle size of from about 0.3 μm to about 0.7 μm. Elimination of the oil particles in the crankcase emission gas stream results in cleaner intake air to the turbocharger air intake system.
Claims12
An inertial impactor that uses gas stream flow rate to separate oil particles in internal combustion engine crankcase emissions, comprising:
- a housing having a top, a bottom and sidewalls extending substantially unbroken therebetween to define a hollow body having an interior with an interior surface and an exterior with an exterior surface;
- said top having an aperture to permit a flow nozzle to pass therethrough;
- said nozzle having a diameter W and a throat that extends a predetermined distance T and stops a predetermined distance S from said bottom;
- said nozzle in fluid communication with said gas stream flow from said engine crankcase;
- said bottom in close proximity to a heat source to act as a primary impactor plate;
- said side walls further equipped with secondary impactor plates located at predetermined locations along said interior surface and extending into said interior space;
- one said side wall further equipped with an orifice to permit gas stream flow from the engine crankcase through the housing, across the primary impactor plate, across the secondary impactor plates and out the orifice in the sidewall to a turbocharger.
An internal combustion engine having at least one inertial impactor that uses gas stream flow rate to separate oil particles in engine crankcase emissions in a closed crankcase ventilation system, comprising:
- an internal combustion engine with a closed crankcase ventilation system;
- an inertial impactor having a housing having a top, a bottom and sidewalls extending substantially unbroken therebetween to define a hollow body having an interior with an interior surface and an exterior with an exterior surface;
- said top having an aperture therethrough to permit a flow nozzle to pass therethrough a predetermined distance and stop a predetermined distance in close proximity to said bottom;
- said nozzle having a diameter and in fluid communication with said gas stream flow from said engine crankcase;
- said bottom in close proximity to a heat source to act as a primary impactor plate;
- said side walls further equipped with secondary impactor plates located at predetermined locations along said interior surface and extending into said interior space;
- one said side wall further equipped with an orifice to permit gas stream flow from the engine crankcase through the housing, across the primary impactor plate, across the secondary impactor plates and out the orifice in the sidewall to a turbocharger.
Dependencies are inferred from the claim text.