Crankcase ventilation system heater

Patent metadata

Field	Value
Publication number	US-9702282-B2
Application number	US-201515110869-A
Country	US
Kind code	B2
Filing date	Jan 13, 2015
Priority date	Jan 14, 2014
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A crankcase ventilation system having a heat transfer conduit included therein. The system includes a housing and a crankcase ventilation filter element within the housing, the crankcase ventilation filter element configured to separate oil and oil aerosol from blow-by gases from a crankcase. An oil inlet is configured to receive pressurized oil from a component of an internal combustion engine. The conduit is positioned within the housing. The conduit is positioned along a length of the housing and is configured to carry the pressurized oil from the oil inlet to a component of the crankcase ventilation system. The conduit is configured to transfer thermal energy from the pressurized oil to the housing. An oil outlet is configured to return the pressurized oil to the crankcase.

First claim

What is claimed is:

1. A crankcase ventilation system comprising:
a housing;
a crankcase ventilation filter element within the housing, the crankcase ventilation filter element configured to separate oil and oil aerosol from blow-by gases from a crankcase;
an oil inlet configured to receive pressurized oil from a component of an internal combustion engine;
a conduit positioned within the housing and positioned along a length of the housing, the conduit configured to carry the pressurized oil from the oil inlet to a component of the crankcase ventilation system, wherein the conduit is configured to transfer thermal energy from the pressurized oil to the housing; and
an oil outlet configured to return the pressurized oil to the crankcase.

2. The crankcase ventilation system of claim 1 , wherein the conduit is semi-circular in shape.

3. The crankcase ventilation system of claim 1 , wherein the component is a pelton wheel, wherein the pelton wheel is configured to rotationally drive the crankcase ventilation filter element.

4. The crankcase ventilation system of claim 1 , wherein the component is a motive jet nozzle.

5. The crankcase ventilation system of claim 4 , wherein the motive jet nozzle is configured to form a high velocity motive jet of the pressurized oil, and wherein the high velocity motive jet is directed into the oil outlet and creates a pumping effect which suctions and pumps the separated oil from the blow-by gases out of the oil outlet.

6. The crankcase ventilation system of claim 1 , wherein the conduit is lined with copper.

7. The crankcase ventilation system of claim 1 , wherein the conduit includes internal ribs configured to increase a surface area in contact with pressurized oil routed through the conduit, thereby increasing the thermal energy transfer from the pressurized oil to the housing.

8. The crankcase ventilation system of claim 1 , wherein the conduit includes sinusoidal flow channels that create oscillatory flows of the pressurized oil within the conduit.

9. The crankcase ventilation system of claim 1 , further comprising an insert positioned within the conduit.

10. The crankcase ventilation system of claim 9 , wherein the insert includes a plurality of openings and a plurality of fins that cause turbulence in the pressurized oil flowing through the conduit, thereby increasing the thermal energy transfer from the pressurized oil to the housing.

11. The crankcase ventilation system of claim 10 , wherein the fins extend to and contact an inner wall of the conduit.

12. A housing for a crankcase ventilation system, the housing comprising:
a cavity configured to house a crankcase ventilation filter element within the housing;
an oil inlet configured to receive pressurized oil from a component of an internal combustion engine;
a conduit positioned within the housing and positioned along a length of the housing, the conduit configured to carry the pressurized oil from the oil inlet to a component of the crankcase ventilation system, wherein the conduit is configured to transfer thermal energy from the pressurized oil to the housing; and
an oil outlet configured to return the pressurized oil to the crankcase.

13. The housing of claim 12 , wherein the conduit is semi-circular in shape.

14. The housing of claim 12 , wherein the component is a pelton wheel, and wherein the pelton wheel is configured to rotationally drive the crankcase ventilation filter element when the crankcase ventilation filter element is installed within the cavity.

15. The housing of claim 12 , wherein the component is a motive jet nozzle.

16. The housing of claim 15 , wherein the motive jet nozzle is configured to form a high velocity motive jet of the pressurized oil, and wherein the high velocity motive jet is directed into the oil outlet and creates a pumping effect which suctions and pumps the separated oil from the blow-by gases out of the oil outlet.

17. The housing of claim 12 , wherein the conduit is lined with copper.

18. The housing of claim 12 , wherein the conduit includes internal ribs configured to increase a surface area in contact with pressurized oil routed through the conduit, thereby increasing the thermal energy transfer from the pressurized oil to the housing.

19. The housing of claim 12 , wherein the conduit includes sinusoidal flow channels that create oscillatory flows of the pressurized oil within the conduit.

20. The housing of claim 12 , further comprising an insert positioned within the conduit.

21. The housing of claim 20 , wherein the insert includes a plurality of openings and a plurality of fins that cause turbulence in the pressurized oil flowing through the conduit, thereby increasing the thermal energy transfer from the pressurized oil to the housing.

22. The housing of claim 21 , wherein the fins extend to and contact an inner wall of the conduit.

Assignees

• Cummins Filtration Ip Inc

Inventors

• Peck Lee A
• Janakiraman Arun P

Classifications

• F01M13/04 Primary

  having means for purifying air before leaving crankcase, e.g. removing oil · CPC title

• F01M2013/0438

  with a filter · CPC title

• F01M2013/0472

  using heating means · CPC title