Claims
- 1. An acid neutralizing filter, comprising:
a canister having an open end; an end plate secured to the canister at the open end, the end plate having an inlet port and an outlet port; a reactor housing arranged inside the canister, the reactor housing comprising a bowl and a lid, the reactor housing comprising an entrance port and an exit port; an acid neutralizing bed of acid neutralizing particles in the reactor housing, the acid neutralizing particles comprising primarily of calcium carbonate; a particulate filter in the reactor housing between the acid neutralizing bed and the exit port; and a predetermined flow passage through the bypass acid neutralizing filter passing in sequence through the inlet port, the entrance port, the acid neutralizing bed, the particulate filter, the exit port and the outlet port.
- 2. The acid neutralizing filter of claim 1, wherein the bowl includes an end wall and a tubular sidewall, the sidewall having a plurality of ribs that extend axially and that are angularly spaced.
- 3. The acid neutralizing filter of claim 2 wherein the particulate filter comprises a tubular filter media contained between end caps, and wherein the particulate filter is concentrically arranged inside of the ribs.
- 4. The acid neutralizing filter of claim 1, wherein the bowl includes an end wall and a tubular sidewall extending axially therefrom, the end wall having a central opening providing said exit port and communicating with the outlet port.
- 5. The acid neutralizing filter of claim 4, wherein the bowl defines an annular wall surrounding the central opening, further comprising an annular adaptor seal member extending into the central opening.
- 6. The acid neutralizing filter of claim 5, wherein the annular seal member includes a radially outward flange engaging the end wall of the bowl and an annular tip engaging the end plate, further comprising a spring supported by the canister biasing the bowl toward the endplate and thereby compressing the seal member between the bowl and the end plate.
- 7. The acid neutralizing filter of claim 1, wherein the bowl and the lid of the reactor housing are molded from plastic material.
- 8. The acid neutralizing filter of claim 7, further comprising mesh material molded into the reactor housing over the entrance port for retaining particles of the acid neutralizing bed in the reactor housing.
- 9. The acid neutralizing filter of claim 1, wherein the particulate filter comprises a tube of filter media, first and second end caps secured to opposing ends of the tube of filter media, a perforated center tube concentrically arranged inside of the tube of filter media and a cylindrical ring of mesh material between the tube of filter media and the perforated center tube.
- 10. The acid neutralizing filter of claim 9, wherein the first end cap has a central opening communicating with the exit port through the bowl and the second end cap is closed, and wherein the particular filter has an axially length that is substantially shorter than the reactor housing, such that the second end cap is spaced axially from the lid with acid neutralizing particles contained therebetween.
- 11. The acid neutralizing filter of claim 10, wherein the reactor housing defines said entrance and said exit port proximate opposed axial ends of the reactor housing, wherein oil flow through the reactor housing is imparted with substantial axial and radial travel components.
- 12. The acid neutralizing filter of claim 10, wherein the bowl integrally includes an annular snout projecting inside of the bowl and through the first end cap has a central opening.
- 13. The acid neutralizing filter of claim 1, wherein the bowl includes an end wall and a tubular sidewall terminating in a free end, the lid engaging the free end, and wherein the end wall defines a central opening providing said exit port communicating with the outlet port, and wherein the lid defines a plurality of said entrance ports, the reactor housing being arranged such that oil flows, in sequence, through the inlet port down an annular space defined between the reactor housing and the canister to a closed end dome portion of the canister, axially through entrance ports defined by the lid, axially and radially through the acid neutralizing bed, through the particular filter and then through the exit and outlet ports.
- 14. The acid neutralizing filter of claim 1, wherein the acid neutralizing particles consist essentially of crushed limestone particles.
- 15. A bypass acid neutralizing filter for an oil filtration circuit of an engine having an oil pump pumping oil along a primary lubrication passage leading to engine bearings and a bypass filtration passage arranged and restricted to pass a minority portion of the oil pumped by the oil pump, a full flow particulate filter being arranged upstream of the engine bearings to filter oil pumped toward the engine bearings, the bypass acid neutralizing filter comprising:
an outer housing adapted to be interposed along the bypass filtration passage, the outer housing having an inlet port and an outlet port; an inner reactor housing inside the outer housing, the inner reactor housing having an entrance port and an exit port; an acid neutralizing bed of acid neutralizing particles contained in the inner reactor housing between the entrance port and the exit port; a bypass particulate filter in the inner reactor housing arranged downstream of the acid neutralizing bed; a predetermined flow passage through bypass acid neutralizing filter passing in sequence through the inlet port, the entrance port, the acid neutralizing bed, the particulate filter, the exit port and the outlet port; wherein the bypass acid neutralizing filter is configured as a bypass type filter to handle less oil than that passed along the primary filtration path with the bypass particulate filter being sized substantially smaller than the primary particulate filter.
- 16. The acid neutralizing filter of claim 15, wherein the inner reactor housing comprises a bowl and a lid, and an entrance port and an exit port.
- 17. The acid neutralizing filter of claim 16, wherein the bowl includes an end wall and a tubular sidewall, the sidewall having a plurality of ribs that extend axially and that are angularly spaced.
- 18. The acid neutralizing filter of claim 17 wherein the particulate filter comprises a tubular filter media contained between end caps, and wherein the particulate filter is concentrically arranged inside of the ribs.
- 19. The acid neutralizing filter of claim 16, wherein the bowl and the lid of the reactor housing are molded from plastic material.
- 20. The acid neutralizing filter of claim 19, further comprising mesh material molded into the reactor housing over the entrance port for retaining particles of the acid neutralizing bed in the reactor housing.
- 21. The acid neutralizing filter of claim 15, wherein the bypass particulate filter comprises a tube of filter media, first and second end caps secured to opposing ends of the tube of filter media, a perforated center tube concentrically arranged inside of the tube of filter media and a cylindrical ring of mesh material between the tube of filter media and the perforated center tube.
- 22. The acid neutralizing filter of claim 21, wherein the first end cap has a central opening communicating with the exit port through the bowl and the second end cap is closed, and wherein the particular filter has an axially length that is substantially shorter than the reactor housing, such that the second end cap is spaced axially from the lid with acid neutralizing particles contained therebetween.
- 23. The acid neutralizing filter of claim 22, wherein the inner reactor housing defines said entrance and said exit ports proximate opposed axial ends of the inner reactor housing, wherein oil flow through the inner reactor housing is imparted with substantial axial and radial travel components.
- 24. The acid neutralizing filter of claim 16, wherein the bowl includes an end wall and a tubular sidewall terminating in a free end, the lid engaging the free end, and wherein the end wall defines a central opening providing said exit port communicating with the outlet port, and wherein the lid defines a plurality of said entrance ports, the reactor housing being arranged such that oil flows, in sequence, through the inlet port down an annular space defined between the inner reactor housing and the outer housing to a closed end outer housing, axially through entrance ports defined by the lid, substantially axially and substantially radially through the acid neutralizing bed, through the particular filter and then through the exit and outlet ports.
- 25. The acid neutralizing filter of claim 15, wherein the acid neutralizing particles consist essentially of crushed limestone particles.
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS
[0001] This patent application claims the benefit of U.S. Provisional Patent Application No. 60/387,243, filed Jun. 7, 2002.
Provisional Applications (1)
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Number |
Date |
Country |
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60387243 |
Jun 2002 |
US |