Oil removal apparatus
AssigneeToyota Jidosha Kabushiki Kaisha
InventorNaoki Takeuchi
Life of this patent
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Abstract
Embodiments of the present disclosure may suppress conduction between an anode and a cathode caused by condensed water in an oil removal apparatus in which oil particles are collected in a filter disposed between the anode and the cathode. An insulating layer may be sandwiched either between the filter and at least one of the anode and the cathode of the bipolar electrode, or within the filter so as to extend in a flow direction of blow-by gas, and may have an insulating property so as to prevent condensed water generated when moisture in the blow-by gas condenses, from connecting the anode and the cathode of the bipolar electrode.
Claims9
An oil removal apparatus that removes oil particles contained in blow-by gas flowing through a blow-by gas passage of an internal combustion engine, comprising:
- a bipolar electrode having an anode and a cathode that extend in a flow direction of said blow-by gas;
- a voltage applicator that applies a voltage to said bipolar electrode;
- a filter, which is a fibrous filter, and which is disposed between said anode and said cathode of said bipolar electrode, in which dielectric polarization occurs when said voltage applicator applies a voltage to said bipolar electrode, and in which oil particles contained in blow-by gas are collected by said filter due to occurrence of the dielectric polarization;
- and
- an insulating layer that is sandwiched either between said filter and at least one of said anode and said cathode of said bipolar electrode, or within said filter so as to extend in said flow direction of said blow-by gas,
- wherein:
- said insulating layer has an insulating property to prevent condensed water generated from moisture in said blow-by gas from connecting said anode and said cathode of said bipolar electrode,
- said anode and said cathode of said bipolar electrode are arranged in a vertical gravitational direction when in a state of said oil removal apparatus being installed in a vehicle, and
- said insulating layer is a space layer that is positioned between said filter and at least one of said anode and said cathode of said bipolar electrode, said space layer defining a space through which said blow-by gas flows.
An oil removal apparatus that removes oil particles contained in blow-by gas flowing through a blow-by gas passage of an internal combustion engine, comprising:
- a bipolar electrode having an anode and a cathode that extend in a flow direction of said blow-by gas;
- a voltage applicator that applies a voltage to said bipolar electrode;
- a filter, which is a fibrous filter, and which is disposed between said anode and said cathode of said bipolar electrode, in which dielectric polarization occurs when said voltage applicator applies a voltage to said bipolar electrode, and in which oil particles contained in blow-by gas are collected by said filter due to occurrence of the dielectric polarization;
- and
- an insulating layer that is sandwiched either between said filter and at least one of said anode and said cathode of said bipolar electrode, or within said filter so as to extend in said flow direction of said blow-by gas,
- wherein:
- said insulating layer has an insulating property to prevent condensed water generated from moisture in said blow-by gas from connecting said anode and said cathode of said bipolar electrode,
- said anode and said cathode of said bipolar electrode are arranged in a vertical gravitational direction when in a state of said oil removal apparatus being installed in a vehicle,
- said filter is divided into an anode side filter positioned on an anode side and a cathode side filter positioned on a cathode side, and
- said insulating layer is a space layer that is positioned between said anode side filter and said cathode side filter, said space layer defining a space through which said blow-by gas flows.
An oil removal apparatus that removes oil particles contained in blow-by gas flowing through a blow-by gas passage of an internal combustion engine, comprising:
- a bipolar electrode having an anode and a cathode that extend in a flow direction of said blow-by gas;
- a voltage applicator that applies a voltage to said bipolar electrode;
- a filter, which is a fibrous filter, and which is disposed between said anode and said cathode of said bipolar electrode, in which dielectric polarization occurs when said voltage applicator applies a voltage to said bipolar electrode, and in which oil particles contained in blow-by gas are collected by said filter due to occurrence of the dielectric polarization;
- and
- an insulating layer that is sandwiched either between said filter and at least one of said anode and said cathode of said bipolar electrode, or within said filter so as to extend in said flow direction of said blow-by gas,
- wherein:
- said insulating layer has an insulating property to prevent condensed water generated from moisture in said blow-by gas from connecting said anode and said cathode of said bipolar electrode, and
- said insulating layer is a water blocking layer that is formed from an insulator and is less permeable than said filter.
Dependencies are inferred from the claim text.