Crankcase emission control system
AssigneeDiesel Research Inc.
InventorGary J. Dickson
Life of this patent
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Abstract
A closed crankcase emission control assembly for an internal combustion engine incorporates into a single compact unit a pressure control assembly, a filter and an oil drain check valve. The pressure control assembly has a gate whereon oily contaminated crankcase emission impinge and oil is separated. The separated oil is collected in a reservoir and returned to the crankcase. The pressure control assembly also has a variable orifice agglomerator which agglomerates particles in the contaminated crankcase emission to form larger particles. Thus, the pressure control assembly simultaneously regulates pressure, separates oil and agglomerates particles. The agglomerated particles are filtered by a filter which may be coarse and clogs less often.
Claims11
A crankcase emission control assembly comprising:
- a pressure control assembly having a gas inlet, a gas outlet, a gate and a channel located under the gate;
- a filter housing connected to the pressure control assembly, wherein said channel extends into said filter housing;
- and
- a filter located within said filter housing, wherein the gate moves in relation to said channel so that pressure in the gas inlet is kept constant, oil is separated from emissions impinging against the gate, and particles in said emissions are agglomerated.
An internal combustion engine comprising:
- an engine block with an engine breather having an outlet;
- a crankcase emission control assembly comprising:
- a pressure control assembly having a gas inlet, a gas outlet, a gate and a channel located under the gate;
- a filter housing connected to the pressure control assembly, wherein said channel extends into said filter housing;
- and
- a filter located within said filter housing, wherein the gate moves in relation to said channel so that pressure in the gas inlet is kept constant, oil is separated from emissions impinging against the gate, and particles in said emissions are agglomerated;
- and
- an induction system coupled to the gas outlet for returning the cleaned crankcase emissions to the engine for combustion.
A crankcase emission control assembly comprising:
- a body having an outer wall, a top end and a bottom end;
- a filter housing connected to the bottom end of the body;
- a first chamber in the top end of the body having a gas inlet through the outer wall;
- said gas inlet being connected to receive contaminated crankcase emissions;
- a second chamber located around the first chamber and having a gas outlet through the outer wall, said gas outlet being connected to output cleaned crankcase emissions;
- a channel extending from the first chamber toward the filter housing;
- a pressure control assembly located within said body and configured to regulate pressure between the first chamber and the channel;
- a filter located between the channel and the filter housing;
- and
- a passageway between the filter and the filter housing connected to the second chamber;
- wherein crankcase emissions flow from the gas inlet to the gas outlet by flowing through the first chamber, the channel, the filter and the passageway.
Dependencies are inferred from the claim text.