AU2018101826A4 - Oil Separator - Google Patents
Oil Separator Download PDFInfo
- Publication number
- AU2018101826A4 AU2018101826A4 AU2018101826A AU2018101826A AU2018101826A4 AU 2018101826 A4 AU2018101826 A4 AU 2018101826A4 AU 2018101826 A AU2018101826 A AU 2018101826A AU 2018101826 A AU2018101826 A AU 2018101826A AU 2018101826 A4 AU2018101826 A4 AU 2018101826A4
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- AU
- Australia
- Prior art keywords
- gases
- oil
- oil separator
- separator element
- blow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
A pollution control system for internal combustion engines; the control system comprising a body provided with at least one inlet and two outlets; the at least one inlet presenting blow-by gases from a crankcase of the engine to an oil separator element; a first of the two outlets providing a return of oil separated from the blow-by gases to the sump of the engine with a second one of the at least two outlets passing substantially oil free gases to an air intake of the engine; a by-pass control valve opening at a predetermined pressure within control system to bypass the oil separator element to direct blow-by gases to the first of the two outlets. Outlet 20 Figure 1 Figure 1A
Description
OIL SEPARATOR
TECHNICAL FIELD [0001] The present invention relates to pollution control and, more particularly although not exclusively to control of oil laden gases generated in internal combustion engines.
BACKGROUND [0002] The process of combustion of petrol or distillate in the combustion chambers of an internal combustion engine is accompanied by a certain amount of the gases being forced past the cylinder rings into the crankcase of the engine. These gases are oil contaminated due to the lubrication of the cylinders, so that it is a mixture of oil and gas which enters the crankcase.
[0003] In the past, excessive build up of these oil laden gases in the crankcase was prevented by simply venting the crankcase to atmosphere. The serious pollution caused by this practice is no longer tolerated.
[0004] It is an object of the present invention to address or at least ameliorate some of the above disadvantages.
Notes [0005] The term “comprising” (and grammatical variations thereof) is used in this specification in the inclusive sense of “having” or “including”, and not in the exclusive sense of “consisting only of’.
[0006] The above discussion of the prior art in the Background of the invention, is not an admission that any information discussed therein is citable prior art or part of the common general knowledge of persons skilled in the art in any country.
SUMMARY OF INVENTION [0007] In one broad form of the invention, there is provided a pollution control system for internal combustion engines; the control system comprising a body provided with at least one
2018101826 26 Nov 2018 inlet and two outlets; the at least one inlet presenting blow-by gases from a crankcase of the engine to an oil separator element; a first of the two outlets providing a return of oil separated from the blow-by gases to the sump of the engine with a second one of the at least two outlets passing substantially oil free gases to an air intake of the engine; a by-pass control valve opening at a predetermined pressure within control system to bypass the oil separator element to direct blow-by gases to the first of the two outlets.
[0008] Preferably, the body includes a substantially cylindrical portion.
[0009] Preferably, the system includes a replaceable oil separator element centrally located within the cylindrical portion of the body; the oil separator element leaving an annular space between external surface of the oil separator element and the internal surface of the body.
[00010] Preferably, the oil separator element includes at least one membrane impervious to oil.
[00011] Preferably, blow-by gases are fed into the annular space; pressure of accumulating by-pass gases forcing the gases through material of the oil separator element into the inside of the oil separator element.
[00012] Preferably, oil entrained in the blow-by gases is substantially stripped from the blow-by gases by the membrane impervious to oil; stripped oil collecting in a lower funnelshaped chamber at a base of the cylindrical portion.
[00013] Preferably, cleaned blow-by gases substantially stripped of oil pass from a central portion of the oil separator element into an upper chamber above the cylindrical portion of the body; a conduit from the second of the two outlets connecting the upper chamber to the air intake of the engine.
[00014] Preferably, a control valve on the body is in communication with the annular space around the oil separator element; the control valve opening at a predetermined pressure within the body when pressure of blow-by gases reaches the predetermined pressure; blow-by
2018101826 26 Nov 2018 gases passing through the relief valve fed to the lower funnel-shaped chamber to return to the crankcase with the stripped oil.
[00015] Preferably, blow-by gases are fed through the at least one inlet into an upper cylindrical portion of the body; the blow-by gases passing into a centre of the oil separator element to be forced through walls of the oil separator element into an annular space between the outer surfaces of the oil separator element and internal surfaces of the body.
[00016] Preferably, the oil separator element is provided with an internal bypass valve located centrally at a lower end of the oil separator element; a default position of the internal bypass valve forces blow-by gases through walls of the oil separator element; the internal bypass valve opening at a predetermined pressure within the oil separator element to allow blow-by gases to bypass the oil separator element and be fed an air intake of the engine.
[00017] Preferably, blow-by gases passing through the walls of the oil separator element are substantially stripped of entrained oil to pass into an annular space between external surfaces of the oil separator element and inside surfaces of a lower cylindrical portion of the body.
[00018] Preferably, blow-by gases substantially stripped of oil are fed from the annular space through the second of the at least two outlets to an air intake of the engine.
[00019] Preferably, oil is stripped from the blow-by gases by an impervious to oil membrane of the oil separator element; stripped oil passing to the oil collecting lower portion of the body.
[00020] Preferably, any blow-by gases collecting in the oil collecting lower portion of the body are fed to the air intake of the engine.
[00021] In yet another broad form of the present invention, there is provided a method of preventing blow-by gases generated in an internal combustion engine from venting to atmosphere; the method including the steps of:
- feeding blow-by gases from a crankcase of the engine to a control system,
2018101826 26 Nov 2018
- passing the blow-by gases through an oil separator element provided with a membrane impervious to oil,
- passing blow-by gases substantially stripped of oil to an air intake of the engine,
- passing oil stripped from the blow-by gases back to the crankcase, and wherein a control valve of the control system opens at a predetermined pressure within a body of the control system to pass blow-by gases to an air intake of the engine.
[00022] Preferably, the predetermined pressure is a function of contamination of the oil separator element.
[00023] Preferably, the predetermined pressure is in a range of 30 to 40mbar.
[00024] Preferably, the blow-by gases are introduced into an annular space around the oil separator element; air substantially stripped of oil passing from a centre of the oil separator element into an upper chamber of the control system; the upper chamber being in communication with the air intake of the engine.
[00025] Preferably, the control valve of the system is in communication with the annular space around the oil separator element.
[00026] Preferably, the blow-by gases are introduced into a centre of the oil separator element; air substantially stripped of oil passing to an annular space around the oil separator; the annular space being in communication with the air intake of the engine.
[00027] Preferably, the oil separator element includes the control valve; the control valve located centrally in a closure at the lower end of the oil separator element.
[00028] In yet another broad form of the present invention, there is provided an oil separator element of a pollution control system for an internal combustion engine; oil separator element removing oil from blow-by gases generated in the internal combustion engine; the oil separator element including a control valve located in a closure of one end of the oil separator element; the control valve opening at a predetermined pressure of blow-by gases within the oil
2018101826 26 Nov 2018 separator element; blow-by gases passing through the control valve when opened ducted to an air intake of the engine.
BRIEF DESCRIPTION OF DRAWINGS [00029] Embodiments of the present invention will now be described with reference to the accompanying drawings wherein:
[00030] Figure 1 is a sectioned perspective view of an oil separator according to prior according to the principles of prior art, [00031] Figure 1A is a sectioned view of a portion of the oil separator of Figure 1 modified according to a first preferred embodiment of the invention, [00032] Figure 2 is a partially sectioned side view of a second preferred embodiment of the invention.
[00033] Figure 3 is a partially sectioned side view of the oil collection element of the oil separator of Figure 2 according to the second preferred embodiment of the invention.
[00034] Figure 4 is a diagram demonstrating an installation of the oil separator of Figure 2 according to the second preferred embodiment of the invention.
[00035] Figure 5 is a schematic diagram of an engine associated with an oil separator usable with any of the above described embodiments.
DESCRIPTION OF EMBODIMENTS
First Preferred Embodiment [00036] With reference to Figure 1, an oil separator 10 for an internal combustion engine operating along the principles of the prior art, comprises a body 12 including a cylindrical portion 14 and an upper chamber 16. The separator 10 is provided with at least one inlet 18 and two outlets 20,22.
2018101826 26 Nov 2018 [00037] Blow-by gases 24, that is, gases generated in the engine which carry entrained lubricating oil and particulates, is fed from the engine into inlet 18 and ducted into an annular space 26 between outside surfaces of an oil separator element 28 and the inside surfaces of the cylindrical portion 14.
[00038] The oil separator element 28 includes a membrane 30 impervious to oil, (but able to pass gas) so that blow-by gases forced through the oil separator element are stripped off oil. These substantially oil free gases move to the upper chamber 16 to pass out of the outlet 20 form where they are ducted to the air intake of the engine.
[00039] The oil separated from the blow-by gases, passes from the membrane 30 to a funnel-shaped oil collecting element 32 from where the oil is collected in a drain hose or ducted back to the sump.
[00040] In this prior art arrangement, the oil separator is provided with a valve mechanism 34 which is in communication with the annular space 26 and thus with the raw blow-by gases in that space. This valve is set to open at a predetermined pressure within the oil separator element 32. Pressure in the oil separator increases over time as the oil separator element becomes clogged with particulates. When opened the raw blow-by gases are vented to atmosphere.
[00041] According to a first embodiment of the invention, the structure and movement of raw by-pass gases and oil-free gases and stripped oil is as described for a device operating along the principles of the prior art above. However, with reference now also to Figure 1 A, the control valve 34A of this first preferred embodiment does not vent access raw blow-by gases to atmosphere when the control valve 34A opens, but ducts them to a comparable oil collection element 32A and thus via the centre of the oil separator element to the upper chamber 16. By this means venting to atmosphere is prevented and the blow-by gases are directed to bypass the oil separator element to the air intake of the engine.
Second Preferred Embodiment [00042] With reference now to Figure 2, in this preferred embodiment of an oil separator according to the invention, a separator 100 again comprises a generally cylindrical body 112
2018101826 26 Nov 2018 and an oil separator element 114, centrally located so as to provide an annular space 116. In this preferred embodiment blow-by gases 118 are introduced through an inlet 120 in an upper portion 122 of the separator body 112 to pass into the central opening 124 of the oil separator element 114, and forced outwardly through the walls of the oil separator element.
[00043] As for the first embodiment above, the oil separator element 114 includes an impervious to oil membrane so that oil 126 is stripped from the blow-by gases 118, to be collected in an oil collection element 128, from where a conduit returns the oil to the crankcase.
[00044] Substantially oil free air 130 passes to the outside of the oil separator element into the annular space 116 from where it passes to an outlet 132 to be ducted to an air intake of the engine.
[00045] In this embodiment, with reference now also to Figure 3, the oil separator element 128 includes a bypass valve 134 located centrally at a lower end of the oil separator element and situated above the oil collection element 128. The bypass valve 134 is set to open at a predetermined pressure within the oil separator element and upper portion of the body. That is when the predetermined pressure reaches a trigger pressure, the control valve 134 opens in order to allow raw blow-by gases to pass to the oil collection element 128. In this situation, raw blow-by gases will bypass the oil separator element and feed into the air intake of the engine.
In Use [00046] A typical example of an installation of the oil separator device 100 of the second preferred embodiment is shown in Figure 4. Blow-by gases are received from the engine 140, in this example by a conduit 142 connected to an outlet on the rocker cover 144, to enter the upper chamber 122. By-pass gases stripped of oil are fed back to the engine air intake (in this example the turbo charger 144) via conduit 146, while stripped oil is fed back to the sump 148 via drain line 150.
[00047] Figure 5 is a schematic diagram of an engine 208 associated with an oil separator
200 usable with any of the above described embodiments. Blow-by gases are fed from the
2018101826 26 Nov 2018 engine 208 into inlet 201 of the oil separator 200. The oil separator 200 comprises an oil separator element 202. The substantially oil free gases may pass through a pressure regulation valve 203 which in at least one form may regulate the pressure inside the crankcase to within permissible limits. The substantially oil free gases then pass out of the outlet 204 from where they are ducted to the air intake system of the engine 208. In one form the substantially oil free gases are injected between the air oil separator 212 and turbocharger 211 of the engine 208.
[00048] More particularly, and in one particular form the substantially oil free gases may be then ducted to the turbocharger 211 via the air intake, followed by the charge cooler 210, then ducted into the engine 208. The oil separated from the blow-by gases is passed from the oil separator element 202 to the drain line 205. From the drain line 205 the oil is then ducted to the oil sump 209 of the engine 208 where it can re-enter the oil circuit.
[00049] The bypass valve 206 is set to open at a predetermined pressure within the oil separator element 202 and the oil separator 200. That is when the predetermined pressure reaches a trigger pressure, the bypass valve 206 opens in order to allow raw blow-by gases to pass to the oil collection 202. In this situation, raw blow-by gases will bypass the oil separator element and feed into the air intake of the engine.
[00050] In a preferred form there is a minimum height difference ‘b’ requirement where the oil outlet 213 of the oil separator element 202 must installed.
[00051] In an alternative preferred form, the check valve 207 is an optional accessory which could be installed within the oil separator 200 thereby allowing a smaller height difference ‘a’ as shown in figure 5.
Claims (22)
1. A pollution control system for internal combustion engines; the control system comprising a body provided with at least one inlet and two outlets; the at least one inlet presenting blow-by gases from a crankcase of the engine to an oil separator element; a first of the two outlets providing a return of oil separated from the blow-by gases to the sump of the engine with a second one of the at least two outlets passing substantially oil free gases to an air intake of the engine; a by-pass control valve opening at a predetermined pressure within control system to bypass the oil separator element to direct blow-by gases to the first of the two outlets.
2. The control system of claim 1 wherein the body includes a substantially cylindrical portion.
3. The control system of claim 2 wherein the system includes a replaceable oil separator element centrally located within the cylindrical portion of the body; the oil separator element leaving an annular space between external surface of the oil separator element and the internal surface of the body.
4. The control system of claim 3 wherein the oil separator element includes at least one membrane impervious to oil.
5. The control system of claim 3 or 4 wherein blow-by gases is fed into the annular space; pressure of accumulating by-pass gases forcing the gases through material of the oil separator element into the inside of the oil separator element.
6. The control system of any one of claims 3 to 5 wherein oil entrained in the blow-by gases is substantially stripped from the blow-by gases by the membrane impervious to oil; stripped oil collecting in a lower funnel-shaped chamber at a base of the cylindrical portion.
7. The control system of any one of claims 3 to 6 wherein cleaned blow-by gases substantially stripped of oil pass from a central portion of the oil separator element into an ίο
2018101826 26 Nov 2018 upper chamber above the cylindrical portion of the body; a conduit from the second of the two outlets connecting the upper chamber to the air intake of the engine.
8. The control system of any one of claims 3 to 7 wherein a control valve on the body is in communication with the annular space around the oil separator element; the control valve opening at a predetermined pressure within the body when pressure of blow-by gases reaches the predetermined pressure; blow-by gases passing through the relief valve fed to the lower funnel-shaped chamber to return to the crankcase with the stripped oil.
9. The control system of claim 4 wherein blow-by gases are fed through the at least one inlet into an upper cylindrical portion of the body; the blow-by gases passing into a centre of the oil separator element to be forced through walls of the oil separator element into an annular space between the outer surfaces of the oil separator element and internal surfaces of the body.
10. The control system of claim 9 wherein the oil separator element is provided with an internal bypass valve located centrally at a lower end of the oil separator element; a default position of the internal bypass valve forces blow-by gases through walls of the oil separator element; the internal bypass valve opening at a predetermined pressure within the oil separator element to allow blow-by gases to bypass the oil separator element and be fed the an air intake of the engine.
11. The control system of claim 10 wherein blow-by gases passing through the walls of the oil separator element are substantially stripped of entrained oil to pass into an annular space between external surfaces of the oil separator element and inside surfaces of a lower cylindrical portion of the body.
12. The control system of claim 11 wherein blow-by gases substantially stripped of oil are fed from the annular space through the second of the at least two outlets to an air intake of the engine.
2018101826 26 Nov 2018
13. The control system of any one of claims 9 or 12 wherein oil is stripped from the blowby gases by an impervious to oil membrane of the oil separator element; stripped oil passing to the oil collecting lower portion of the body.
14. The control system of any one of claims 10 to 13 wherein any blow-by gases collecting in the oil collecting lower portion of the body are fed to the air intake of the engine.
15. A method of preventing blow-by gases generated in an internal combustion engine from venting to atmosphere; the method including the steps of:
- feeding blow-by gases from a crankcase of the engine to a control system,
- passing the blow-by gases through an oil separator element provided with a membrane impervious to oil,
- passing blow-by gases substantially stripped of oil to an air intake of the engine,
- passing oil stripped from the blow-by gases back to the crankcase, and wherein a control valve of the control system opens at a predetermined pressure within a body of the control system to pass blow-by gases to an air intake of the engine.
16. The method of claim 16 wherein the predetermined pressure is a function of contamination of the oil separator element.
17. The method of claim 15 or 16 wherein the predetermined pressure is in a range of 30 to 40mbar.
18. The method of claim 15 wherein the blow-by gases are introduced into an annular space around the oil separator element; air substantially stripped of oil passing from a centre of the oil separator element into an upper chamber of the control system; the upper chamber being in communication with the air intake of the engine.
19. The method of claim 18 wherein the control valve of the system is in communication with the annular space around the oil separator element.
2018101826 26 Nov 2018
20. The method of claim 15 wherein the blow-by gases are introduced into a centre of the oil separator element; air substantially stripped of oil passing to an annular space around the oil separator; the annular space being in communication with the air intake of the engine.
21. The method of claim 19 wherein the oil separator element includes the control valve; the control valve located centrally in a closure at the lower end of the oil separator element.
22. A oil separator element of a pollution control system for an internal combustion engine; oil separator element removing oil from blow-by gases generated in the internal combustion engine; the oil separator element including a control valve located in a closure of one end of the oil separator element; the control valve opening at a predetermined pressure of blow-by gases within the oil separator element; blow-by gases passing through the control valve when opened ducted to an air intake of the engine.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101826A AU2018101826A4 (en) | 2018-11-26 | 2018-11-26 | Oil Separator |
| AU2019100804A AU2019100804B4 (en) | 2018-11-23 | 2019-07-23 | Oil Separator |
| AU2019101702A AU2019101702A4 (en) | 2018-11-23 | 2019-12-24 | Oil separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101826A AU2018101826A4 (en) | 2018-11-26 | 2018-11-26 | Oil Separator |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019100804A Division AU2019100804B4 (en) | 2018-11-23 | 2019-07-23 | Oil Separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2018101826A4 true AU2018101826A4 (en) | 2019-01-03 |
Family
ID=64872721
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2018101826A Ceased AU2018101826A4 (en) | 2018-11-23 | 2018-11-26 | Oil Separator |
| AU2019100804A Active AU2019100804B4 (en) | 2018-11-23 | 2019-07-23 | Oil Separator |
| AU2019101702A Active AU2019101702A4 (en) | 2018-11-23 | 2019-12-24 | Oil separator |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019100804A Active AU2019100804B4 (en) | 2018-11-23 | 2019-07-23 | Oil Separator |
| AU2019101702A Active AU2019101702A4 (en) | 2018-11-23 | 2019-12-24 | Oil separator |
Country Status (1)
| Country | Link |
|---|---|
| AU (3) | AU2018101826A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019214581A1 (en) * | 2019-09-24 | 2021-03-25 | BRUSS Sealing Systems GmbH | Oil separator for an internal combustion engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7614390B2 (en) * | 2007-08-23 | 2009-11-10 | Cummins Filtration Ip Inc. | Two stage drainage gas-liquid separator |
| DE102012200015A1 (en) * | 2012-01-02 | 2013-07-04 | Mahle International Gmbh | Crankcase ventilation device |
| EP3842119B1 (en) * | 2015-06-01 | 2023-06-21 | MANN+HUMMEL GmbH | Filter element, oil separator and method for regulating the pressure in a crank case ventilation system |
| US10596509B2 (en) * | 2016-07-22 | 2020-03-24 | Mann+Hummel Gmbh | Ring filter element, in particular for oil separation of a crankcase, and filter device |
-
2018
- 2018-11-26 AU AU2018101826A patent/AU2018101826A4/en not_active Ceased
-
2019
- 2019-07-23 AU AU2019100804A patent/AU2019100804B4/en active Active
- 2019-12-24 AU AU2019101702A patent/AU2019101702A4/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019214581A1 (en) * | 2019-09-24 | 2021-03-25 | BRUSS Sealing Systems GmbH | Oil separator for an internal combustion engine |
| DE102019214581B4 (en) | 2019-09-24 | 2022-06-30 | BRUSS Sealing Systems GmbH | Oil separator for an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2019100804B4 (en) | 2020-02-13 |
| AU2019100804A4 (en) | 2019-08-22 |
| AU2019101702A4 (en) | 2020-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK21 | Patent ceased section 101c(b)/section 143a(c)/reg. 9a.4 - examination under section 101b had not been carried out within the period prescribed |