US20080175739A1 - Supercharger with heat insulated gear case - Google Patents
Supercharger with heat insulated gear case Download PDFInfo
- Publication number
- US20080175739A1 US20080175739A1 US11/625,936 US62593607A US2008175739A1 US 20080175739 A1 US20080175739 A1 US 20080175739A1 US 62593607 A US62593607 A US 62593607A US 2008175739 A1 US2008175739 A1 US 2008175739A1
- Authority
- US
- United States
- Prior art keywords
- bearing housing
- gear case
- cavity
- supercharger
- rotors
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/086—Carter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
Definitions
- This invention relates to positive displacement compressors or superchargers, such as roots type or screw compressors utilized for automotive engine superchargers and other purposes.
- Such a compressor used as an automotive supercharger may include a housing having a rotor cavity in which a pair of parallel rotors having interleaved lobes rotate to compress air drawn into one end of the housing and discharged through an opening in the cavity wall near an opposite end of the housing.
- the rotors may be belt driven by the engine through a pulley connected directly, or through a gear train, to the pair of rotors.
- Roots type and screw type compressors used on original equipment automotive engines are made with a bearing housing between the rotors and the supercharger gear case.
- This bearing housing is made of aluminum on some commercial superchargers.
- the aluminum rotors have their compressed air outlet ends rotatably mounted adjacent the bearing housing and are supported and driven through rotor drive stubs extending into the gear case
- the bearing housing and gear case are sealed by a front cover to form a drive assembly provided with a permanent charge of oil for lubricating the gears and bearings.
- the gear case has no positive cooling other than ram air in an automotive installation.
- Boost operation of the supercharger increases the air temperature at the outlet ends of the rotors next to the bearing plate with the highest temperatures reached at maximum engine speeds.
- the boosted air heats the gear case oil by forced convection/conduction through the aluminum bearing plate At high boost levels, this can lead to unacceptable gear case temperatures at continued high speeds and loads. This in turn may require speed limits or boost trim to prevent gear case oil damage or seal damage that can lead to catastrophic supercharger damage.
- the present invention results from consideration of both practical and low cost means for limiting gear case oil temperatures of a positive displacement supercharger.
- the present invention is designed to reduce the rate of heat flow between the rotor cavity and the gear case oil of a supercharger.
- the heat flow may be reduced by applying a suitable insulating material between the rotor cavity and the associated bearing housing of the supercharger.
- the insulating material is a ceramic suitable for high temperature applications.
- a heat resistant insulating ceramic material may be applied to a face of the aluminum bearing housing that faces toward the rotor cavity and the rotors operative therein.
- the ceramic material may be in the form of a preformed plate having substantial strength for operation adjacent the rotor cavity and the ends of the rotors.
- the plate may be secured to the bearing housing by any suitable means including, for example, adhesives or mechanical fasteners.
- FIG. 1 is an exterior pictorial view of an exemplary helical rotor supercharger according to the invention
- FIG. 2 is a partial cross-sectional plan view showing the insulated interior of a supercharger similar to that of FIG. 1 .
- FIG. 3 is an interior pictorial view of the supercharger of FIG. 2 with the bearing housing omitted to show the insulating plate;
- FIG. 4 is a face view of the insulating plate.
- FIG. 1 of the drawings in detail, numeral 10 generally indicates a positive displacement helical lobed compressor or supercharger according to the invention.
- Supercharger 10 includes a rotor housing 12 having an internal rotor cavity 14 defined by a surrounding wall 16 and front and rear end walls 18 , 20 respectively.
- a generally rectangular inlet opening 22 in a lower portion of the rear end wall 20 communicates an inlet end 23 of the cavity 14 with a source of inlet air, not shown.
- a generally V-shaped outlet opening 24 extends through the surrounding wall 16 adjacent the front end wall 18 of the housing and communicates an outlet end 25 of the cavity 14 with a pressure charging air system, not shown.
- a pair of supercharger rotors 26 , 28 having lobes 30 , 32 with opposite helix angles, as is best shown in FIG. 2 .
- the lobes 30 , 32 of the rotors are interleaved in assembly to define with the housing helical rotor chambers 34 .
- the rotors form a rotor assembly 36 having inlet and outlet ends 38 , 40 .
- the rotor assembly 36 is belt driven through a pulley, not shown, connected with a drive gear case 42 to form a drive and rotor assembly 44 .
- the gear case 42 includes a front cover 46 and a bearing housing 48 enclosing a timing gear train 50 and bearings 52 , which drive and support the outlet end 40 of the rotor assembly 36 .
- Bearing housing 48 includes an inner end surface 54 facing the rotor cavity 14 and the rotor assembly outlet end 40
- the rotors are of the helical Roots type, although a screw type supercharger having air compressing screw type rotors could be used if desired.
- the rotor chambers 34 carry charging air from the inlet end 23 to the outlet end 25 of the rotor cavity 14 .
- the inner end surface 54 of the bearing housing 48 is covered with a suitable insulating material, such as a temperature resistant ceramic, preferably in the form of a preformed ceramic plate 56 , best shown in FIGS. 3 and 4 . It is formed with an outer periphery 58 configured to cover the inner end surface 54 of the bearing housing (not shown in FIG. 3 ) with openings 60 for the rotor drive shafts, not numbered.
- the plate may be fixed to the end surface 54 of the bearing housing 48 by any suitable means, such as high temperature adhesives or mechanical fasteners. Alternatively, other forms of insulation could be applied in place of or in addition to the described ceramic plate.
- the supercharger 10 draws air into the inlet end 23 of the rotor cavity 14 and carries it to the outlet end 25 of the rotor cavity where it is discharged at a higher pressure and temperature.
- the air outlet temperature is raised to a limit, which, if conducted into the gear case 42 through the aluminum material of the bearing housing 48 , could overheat the lubricating oil in the gear case and possibly damage the oil and oil seals, not shown.
- the addition of the ceramic plate 56 , or other insulation, on the inner end surface 54 of the bearing housing 48 substantially reduces the conduction of heat into the gear case 42 and reduces the operating temperature of the oil in the gear case. This protects the gear case against excessive oil temperatures and may allow supercharger operation at higher speeds and loads than have been acceptable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
A positive displacement supercharger includes a housing having a rotor cavity. A pair of positive displacement rotors are oppositely rotatable in the rotor cavity and have interleaved helical lobes forming rotor chambers operative to carry air axially from an inlet end to an outlet end of the cavity. A gear case adjacent the rotor cavity is drivably connected with and supports the rotors, the gear case including a bearing housing having an end surface facing the rotor cavity and the outlet ends of the rotors. A heat insulating material is applied to the end surface of the bearing housing and is effective to reduce heat flow between the rotor cavity and the end surface of the bearing housing to effectively reduce lubricating oil temperatures in the gear case. The insulating material may be a ceramic plate fixed to the bearing housing end surface.
Description
- This invention relates to positive displacement compressors or superchargers, such as roots type or screw compressors utilized for automotive engine superchargers and other purposes.
- It is known in the art to utilize positive displacement compressors having lobed rotors for supercharging internal combustion engines and for providing compressed air for other purposes. Such a compressor used as an automotive supercharger may include a housing having a rotor cavity in which a pair of parallel rotors having interleaved lobes rotate to compress air drawn into one end of the housing and discharged through an opening in the cavity wall near an opposite end of the housing. The rotors may be belt driven by the engine through a pulley connected directly, or through a gear train, to the pair of rotors.
- Roots type and screw type compressors used on original equipment automotive engines are made with a bearing housing between the rotors and the supercharger gear case. This bearing housing is made of aluminum on some commercial superchargers. The aluminum rotors have their compressed air outlet ends rotatably mounted adjacent the bearing housing and are supported and driven through rotor drive stubs extending into the gear case The bearing housing and gear case are sealed by a front cover to form a drive assembly provided with a permanent charge of oil for lubricating the gears and bearings. The gear case has no positive cooling other than ram air in an automotive installation.
- Boost operation of the supercharger increases the air temperature at the outlet ends of the rotors next to the bearing plate with the highest temperatures reached at maximum engine speeds. The boosted air heats the gear case oil by forced convection/conduction through the aluminum bearing plate At high boost levels, this can lead to unacceptable gear case temperatures at continued high speeds and loads. This in turn may require speed limits or boost trim to prevent gear case oil damage or seal damage that can lead to catastrophic supercharger damage.
- Dynamometer tests of a supercharger have shown that the gear case heats up very rapidly at high speeds without supplementary cooling of the gear case. This problem is limited in some vehicle installations because continuous maximum speed operation is not possible for most vehicle installations. However, with less under hood air flow and/or higher continuous speeds, the gear case temperatures could exceed design limits. Methods and means are desired for limiting supercharger gear case oil temperatures during severe operating conditions.
- The present invention results from consideration of both practical and low cost means for limiting gear case oil temperatures of a positive displacement supercharger.
- Since high temperature of the compressed air at the discharge end of the compressor rotor cavity appears to be a main source of heat flow to the gear case oil, the present invention is designed to reduce the rate of heat flow between the rotor cavity and the gear case oil of a supercharger.
- The heat flow may be reduced by applying a suitable insulating material between the rotor cavity and the associated bearing housing of the supercharger.
- In a selected embodiment, the insulating material is a ceramic suitable for high temperature applications.
- In accordance with the invention, a heat resistant insulating ceramic material may be applied to a face of the aluminum bearing housing that faces toward the rotor cavity and the rotors operative therein. The ceramic material may be in the form of a preformed plate having substantial strength for operation adjacent the rotor cavity and the ends of the rotors. The plate may be secured to the bearing housing by any suitable means including, for example, adhesives or mechanical fasteners.
- If desired, other forms of heat insulation may be applied in any suitable manner to the cavity facing face of the bearing housing. Alternatively, or in addition, other forms of insulation or insulators may be applied between the rotors and extensions thereof into the gear case to further reduce heat transmission to the gear case oil.
- These and other features and advantages of the invention will be more fully understood from the following description of certain specific embodiments of the invention taken together with the accompanying drawings.
-
FIG. 1 is an exterior pictorial view of an exemplary helical rotor supercharger according to the invention; -
FIG. 2 is a partial cross-sectional plan view showing the insulated interior of a supercharger similar to that ofFIG. 1 . -
FIG. 3 is an interior pictorial view of the supercharger ofFIG. 2 with the bearing housing omitted to show the insulating plate; and -
FIG. 4 is a face view of the insulating plate. - Referring first to
FIG. 1 of the drawings in detail,numeral 10 generally indicates a positive displacement helical lobed compressor or supercharger according to the invention. Supercharger 10 includes arotor housing 12 having aninternal rotor cavity 14 defined by a surroundingwall 16 and front andrear end walls rear end wall 20 communicates aninlet end 23 of thecavity 14 with a source of inlet air, not shown. A generally V-shaped outlet opening 24 extends through the surroundingwall 16 adjacent thefront end wall 18 of the housing and communicates anoutlet end 25 of thecavity 14 with a pressure charging air system, not shown. - Within the
cavity 14 there are rotatably mounted a pair ofsupercharger rotors lobes FIG. 2 . Thelobes helical rotor chambers 34. - The rotors form a
rotor assembly 36 having inlet and outlet ends 38, 40. Therotor assembly 36 is belt driven through a pulley, not shown, connected with adrive gear case 42 to form a drive androtor assembly 44. - The
gear case 42 includes afront cover 46 and a bearinghousing 48 enclosing atiming gear train 50 andbearings 52, which drive and support theoutlet end 40 of therotor assembly 36.Bearing housing 48 includes aninner end surface 54 facing therotor cavity 14 and the rotorassembly outlet end 40 The rotors are of the helical Roots type, although a screw type supercharger having air compressing screw type rotors could be used if desired. Therotor chambers 34 carry charging air from theinlet end 23 to theoutlet end 25 of therotor cavity 14. - In accordance with the invention, the
inner end surface 54 of the bearinghousing 48 is covered with a suitable insulating material, such as a temperature resistant ceramic, preferably in the form of a preformedceramic plate 56, best shown inFIGS. 3 and 4 . It is formed with anouter periphery 58 configured to cover theinner end surface 54 of the bearing housing (not shown inFIG. 3 ) withopenings 60 for the rotor drive shafts, not numbered. The plate may be fixed to theend surface 54 of the bearinghousing 48 by any suitable means, such as high temperature adhesives or mechanical fasteners. Alternatively, other forms of insulation could be applied in place of or in addition to the described ceramic plate. - In operation, the
supercharger 10 draws air into theinlet end 23 of therotor cavity 14 and carries it to theoutlet end 25 of the rotor cavity where it is discharged at a higher pressure and temperature. As the rotor speed is increased to a maximum, the air outlet temperature is raised to a limit, which, if conducted into thegear case 42 through the aluminum material of thebearing housing 48, could overheat the lubricating oil in the gear case and possibly damage the oil and oil seals, not shown. However, the addition of theceramic plate 56, or other insulation, on theinner end surface 54 of thebearing housing 48 substantially reduces the conduction of heat into thegear case 42 and reduces the operating temperature of the oil in the gear case. This protects the gear case against excessive oil temperatures and may allow supercharger operation at higher speeds and loads than have been acceptable. - While the invention has been described by reference to certain preferred embodiments, it should be understood that numerous changes could be made within the spirit and scope of the inventive concepts described. Accordingly, it is intended that the invention not be limited to the disclosed embodiments, but that it have the full scope permitted by the language of the following claims.
Claims (5)
1. A positive displacement supercharger comprising:
a housing including a rotor cavity having a surrounding cavity wall;
a pair of positive displacement rotors oppositely rotatable in the rotor cavity and having interleaved helical lobes forming rotor chambers operative to carry air axially from an inlet end of the cavity to an outlet end of the cavity;
a gear case received within the rotor cavity and drivably connected with and supporting the rotors at outlet ends thereof, the gear case including a bearing housing having an end surface facing the rotor cavity and the outlet ends of the rotors; and
a heat insulating material applied to the end surface of the bearing housing and effective to reduce heat flow between the rotor cavity, with the rotors and compressed air therein, and the end surface of the bearing housing to effectively limit lubricating oil temperatures in the gear case.
2. A supercharger as in claim 1 wherein the heat insulating material is a ceramic.
3. A supercharger as in claim 2 wherein the ceramic is formed as a preformed plate.
4. A supercharger as in claim 3 wherein the ceramic plate is secured to the end surface of the bearing housing by mechanical fasteners.
5. A supercharger as in claim 3 wherein the ceramic plate is secured to the end surface of the bearing housing by an adhesive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/625,936 US20080175739A1 (en) | 2007-01-23 | 2007-01-23 | Supercharger with heat insulated gear case |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/625,936 US20080175739A1 (en) | 2007-01-23 | 2007-01-23 | Supercharger with heat insulated gear case |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080175739A1 true US20080175739A1 (en) | 2008-07-24 |
Family
ID=39641404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/625,936 Abandoned US20080175739A1 (en) | 2007-01-23 | 2007-01-23 | Supercharger with heat insulated gear case |
Country Status (1)
Country | Link |
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US (1) | US20080175739A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080292487A1 (en) * | 2007-05-21 | 2008-11-27 | Gm Global Technology Operations, Inc. | Tapered Rotor Assemblies for a Supercharger |
US20110150671A1 (en) * | 2009-12-21 | 2011-06-23 | Eaton Corporation | Supercharger timing gear oil pump |
US20120093671A1 (en) * | 2009-03-27 | 2012-04-19 | Sprintex Australasia Pty Ltd | Compressor |
US20130183185A1 (en) * | 2012-01-12 | 2013-07-18 | Vacuubrand Gmbh + Co Kg | Screw rotor for a screw type vacuum pump |
US8523733B1 (en) | 2012-07-30 | 2013-09-03 | Ford Global Technologies, Llc | Vehicle driveline differential with improved efficiency during vehicle cold starts |
WO2014089035A1 (en) * | 2012-12-03 | 2014-06-12 | Eaton Corporation | Integrated supercharger and charge-air cooler system |
USD732081S1 (en) * | 2014-01-24 | 2015-06-16 | Eaton Corporation | Supercharger |
USD762246S1 (en) * | 2012-12-03 | 2016-07-26 | Eaton Corporation | Integrated supercharger and charge-air cooler system |
WO2016201171A1 (en) * | 2015-06-11 | 2016-12-15 | Eaton Corporation | Bearing plate for supercharger |
GB2563595A (en) * | 2017-06-19 | 2018-12-26 | Edwards Ltd | Twin-shaft pumps |
USD855657S1 (en) | 2016-03-21 | 2019-08-06 | Eaton Corporation | Front cover for supercharger |
US11085403B2 (en) | 2013-10-31 | 2021-08-10 | Eaton Intelligent Power Limited | Thermal abatement systems |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2754050A (en) * | 1950-04-22 | 1956-07-10 | Gen Motors Corp | Rotary blower |
US3535057A (en) * | 1968-09-06 | 1970-10-20 | Esper Kodra | Screw compressor |
US4735556A (en) * | 1982-09-10 | 1988-04-05 | Kabushiki Kaisah Toyota Chuo Kenkyusho | Turbocharger |
US5554020A (en) * | 1994-10-07 | 1996-09-10 | Ford Motor Company | Solid lubricant coating for fluid pump or compressor |
US6688867B2 (en) * | 2001-10-04 | 2004-02-10 | Eaton Corporation | Rotary blower with an abradable coating |
-
2007
- 2007-01-23 US US11/625,936 patent/US20080175739A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2754050A (en) * | 1950-04-22 | 1956-07-10 | Gen Motors Corp | Rotary blower |
US3535057A (en) * | 1968-09-06 | 1970-10-20 | Esper Kodra | Screw compressor |
US4735556A (en) * | 1982-09-10 | 1988-04-05 | Kabushiki Kaisah Toyota Chuo Kenkyusho | Turbocharger |
US5554020A (en) * | 1994-10-07 | 1996-09-10 | Ford Motor Company | Solid lubricant coating for fluid pump or compressor |
US6688867B2 (en) * | 2001-10-04 | 2004-02-10 | Eaton Corporation | Rotary blower with an abradable coating |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7882826B2 (en) * | 2007-05-21 | 2011-02-08 | GM Global Technology Operations LLC | Tapered rotor assemblies for a supercharger |
US20080292487A1 (en) * | 2007-05-21 | 2008-11-27 | Gm Global Technology Operations, Inc. | Tapered Rotor Assemblies for a Supercharger |
US9528516B2 (en) * | 2009-03-27 | 2016-12-27 | Sprintex Australasia Pty Ltd | Compressor having outlet with gap to enhance volumetric efficiency |
US20120093671A1 (en) * | 2009-03-27 | 2012-04-19 | Sprintex Australasia Pty Ltd | Compressor |
KR101792599B1 (en) * | 2009-03-27 | 2017-11-20 | 스프린텍스 오스트랄라시아 피티와이 엘티디 | A compressor |
US20110150671A1 (en) * | 2009-12-21 | 2011-06-23 | Eaton Corporation | Supercharger timing gear oil pump |
WO2011077230A3 (en) * | 2009-12-21 | 2012-08-23 | Eaton Corporation | Supercharger timing gear oil pump |
CN102971536A (en) * | 2009-12-21 | 2013-03-13 | 伊顿公司 | Supercharger timing gear oil pump |
US8932033B2 (en) | 2009-12-21 | 2015-01-13 | Eaton Corporation | Supercharger timing gear oil pump |
US20130183185A1 (en) * | 2012-01-12 | 2013-07-18 | Vacuubrand Gmbh + Co Kg | Screw rotor for a screw type vacuum pump |
US8523733B1 (en) | 2012-07-30 | 2013-09-03 | Ford Global Technologies, Llc | Vehicle driveline differential with improved efficiency during vehicle cold starts |
USD868113S1 (en) | 2012-12-03 | 2019-11-26 | Eaton Intelligent Power Limited | Integrated supercharger and charge-air cooler system |
WO2014089035A1 (en) * | 2012-12-03 | 2014-06-12 | Eaton Corporation | Integrated supercharger and charge-air cooler system |
USD762246S1 (en) * | 2012-12-03 | 2016-07-26 | Eaton Corporation | Integrated supercharger and charge-air cooler system |
US11085403B2 (en) | 2013-10-31 | 2021-08-10 | Eaton Intelligent Power Limited | Thermal abatement systems |
USD732081S1 (en) * | 2014-01-24 | 2015-06-16 | Eaton Corporation | Supercharger |
WO2016201171A1 (en) * | 2015-06-11 | 2016-12-15 | Eaton Corporation | Bearing plate for supercharger |
USD855657S1 (en) | 2016-03-21 | 2019-08-06 | Eaton Corporation | Front cover for supercharger |
GB2563595A (en) * | 2017-06-19 | 2018-12-26 | Edwards Ltd | Twin-shaft pumps |
CN110753793A (en) * | 2017-06-19 | 2020-02-04 | 爱德华兹有限公司 | Double-shaft pump |
KR20200019627A (en) | 2017-06-19 | 2020-02-24 | 에드워즈 리미티드 | Twin-shaft pump |
GB2563595B (en) * | 2017-06-19 | 2020-04-15 | Edwards Ltd | Twin-shaft pumps |
JP2020524242A (en) * | 2017-06-19 | 2020-08-13 | エドワーズ リミテッド | Twin shaft pump |
WO2018234755A1 (en) * | 2017-06-19 | 2018-12-27 | Edwards Limited | Twin-shaft pumps |
TWI766044B (en) * | 2017-06-19 | 2022-06-01 | 英商愛德華有限公司 | Twin-shaft pumps |
US11542946B2 (en) | 2017-06-19 | 2023-01-03 | Edwards Limited | Twin-shaft pumps with thermal breaks |
JP7258867B2 (en) | 2017-06-19 | 2023-04-17 | エドワーズ リミテッド | twin shaft pump |
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