WO2020101550A1 - Lubrication system for a gear box - Google Patents

Lubrication system for a gear box Download PDF

Info

Publication number
WO2020101550A1
WO2020101550A1 PCT/SE2019/051105 SE2019051105W WO2020101550A1 WO 2020101550 A1 WO2020101550 A1 WO 2020101550A1 SE 2019051105 W SE2019051105 W SE 2019051105W WO 2020101550 A1 WO2020101550 A1 WO 2020101550A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
gear box
pump
module
lubrication
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.)
Ceased
Application number
PCT/SE2019/051105
Other languages
French (fr)
Inventor
Dieter Slapak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scania CV AB
Original Assignee
Scania CV AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Scania CV AB filed Critical Scania CV AB
Priority to DE112019004777.9T priority Critical patent/DE112019004777T5/en
Publication of WO2020101550A1 publication Critical patent/WO2020101550A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps; Pressure control
    • F16H57/0436—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
    • F16H57/0404—Lubricant filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • F16H57/0452—Oil pans

Definitions

  • the present invention relates to a lubrication system for a gear box, which system comprises
  • a lubrication oil sump configured to provide lubrication oil to be sucked therefrom by said pump and receive such oil returned thereto after lubrication of said components
  • the base plate is configured to form a part of an outer gear box casing and to be removably attached to walls of the gear box casing to allow the module to be lifted out therefrom for maintenance and/or repair of parts belonging to the module.
  • the invention relates to lubrication systems for gear boxes used in any type of power transmission, such as industrial applications and all types of motor vehicles, although the invention is particularly applicable to motor vehicles and especially wheeled utility vehicles, such as trucks or lorries and buses. This is the reason for below discussing the invention for this particular use without for that sake restricting it thereto.
  • a lubrication system for a gear box needs a number of different members and these are in most gear boxes located in different regions inside the gear box casing. This results in complications when trying to reach the different members of the lubrication system for maintenance and/or repair thereof making such measures time consuming and by that costly to carry out.
  • US 2016/0069446 A1 discloses a lubrication system for a gear box of the type defined in the introduction trying to address the problem mentioned above by providing the module with a base plate to which the pump and the filter of the lubrication system are attached and arranging the base plate so that the module is allowed to be lifted out of the gear box casing. This facilitates maintenance and/or repair of the pump and filter of such a lubrication system.
  • a lubrication system for a gear box of the type defined in the introduction trying to address the problem mentioned above by providing the module with a base plate to which the pump and the filter of the lubrication system are attached and arranging the base plate so that the module is allowed to be lifted out of the gear box casing.
  • This facilitates maintenance and/or repair of the pump and filter of such a lubrication system.
  • there is of course an ongoing attempt to improve such a lubrication system with respect to the efficiency to reliably carry out maintenance and/or repair of parts belonging to the system.
  • the object of the present invention is to provide a lubrication system of the type defined in the introduction being improved in at least some aspect with respect to such lubrication systems already known.
  • the base plate of the module is designed to be attached to walls of a gear box casing in a bottom region of the casing to by at least base plate portions be in contact with oil in said lubrication oil sump.
  • the pump and the filter will when the module is arranged in place in a gear box casing be in a position close to the oil of the system in form of the oil sump favourable for disconnecting these lubrication system members from the oil conducting path when there is a need of maintenance and/or repair thereof.
  • the base plate of the module has a bottom and a wall surrounding this bottom which together with the bottom forms a volume configured to receive and contain oil of the lubrication oil sump. It is preferred for the members of the lubrication system belonging to the module to have the module providing at least a part of the lubrication oil sump.
  • the module is configured to be attached to portions of a bottom wall of a gear box casing while participating in forming this bottom wall and said volume is configured to contain a part of the oil of said lubrication oil sump.
  • the base plate is configured to have dimensions corresponding to dimensions of an opening in a gear box casing through which the module is configured to be introduced for arranging it in the gear box and lifted out for said maintenance and/or repair.
  • the pump has a member connectable to a shaft of a gear box for driving the pump by said shaft. Providing power to drive the pump by using a said shaft for this, such as through a gear wheel on said shaft engaging a gear wheel of the pump, is advantageous.
  • said member of the pump is configured to be connected to a countershaft of a gear box to be driven thereby.
  • the system comprises a heat exchanger arranged at the discharge side of the pump in said oil conducting path allowing cooling of the oil before reaching the components, and the heat exchanger is a part of the module and attached to the base plate. This means that the heat exchanger will be close to the pump and easily removed from a gear box with the module for maintenance and/or repair.
  • the system comprises within the module a by-pass loop configured to conduct oil to the components to pass the heat exchanger without flowing therethrough and means configured to control the relation of flow of oil through the heat exchanger and flow passing it. It is favourable to have also such a loop within the module allowed to be lifted out from a gear box casing facilitating this action of lifting out.
  • the system comprises within the module a by-pass loop configured to conduct oil to the components to pass the filter without flowing therethrough and means configured to control the relation of flow of oil through the filter and the flow passing it. It is favourable to have also such a loop within the module allowed to be lifted out from a gear box casing facilitating this action of lifting out.
  • the system comprises within the module an oil conducting loop diverting oil from the oil conducting path directly at the discharge of the pump to the suction side of the pump and a member controlling the relation of flow of oil from the pump to said components and the flow of oil recirculated to the suction side of the pump as a function of the temperature and by that the viscosity of the oil. It is favourable to have also such a loop within the module allowed to be lifted out from a gear box casing facilitating this action of lifting out.
  • the invention also relates to a gear box for transmission of mechanic power and a motor vehicle according to the appended claims directed thereto.
  • Fig 1 is a schematic view used to illustrate a lubrication system according to an embodiment of the invention
  • Fig 2 is a perspective view of parts of a lubrication system according to the embodiment of the invention illustrated in Fig 1 ,
  • Fig 3 is an exploded view used to illustrate how the module of a lubrication system shown in Fig 1 and 2 may be lifted out of a gear box casing for maintenance and/or repair of members arranged therein, and
  • Fig 4 is a view showing the module secured to the gear box casing shown in Fig 3.
  • a lubrication system is very schematically illustrated in Fig 1 , and this has all members included in a module 1 having a base plate 2 to which a pump 3 is attached.
  • the pump 3 is configured to pump lubrication oil to components 4 like shafts and bearings inside a gear box casing.
  • a lubrication oil sump 5 is configured to provide lubrication oil to be sucked therefrom by the pump 3 and receive such oil returned thereto after lubrication of the components 4.
  • the base plate 2 will be immersed in the oil sump 5 although not shown so in Fig 1 illustrating the function of the lubrication system.
  • An oil filter 6 is arranged in the oil conducting path 7 from the pump to the components 4 at a discharge side of the pump to filter out debris from the oil before reaching the components 4. Furthermore, a heat exchanger 8 is arranged in the oil conducting path 7 from the pump to the components 4 downstream the filter 6 allowing cooling of the oil before reaching the components.
  • the pump, the filter and the heat exchanger are all attached to the base plate 2 of the module 1 .
  • an oil conducting loop 9 diverting oil from the oil conducting path directly at the discharge of the pump to the suction side of the pump is included in the module, and a member 10 is configured to control the relation of flow of oil from the pump 3 to the components 4 and the flow of oil recirculated to the suction side of the pump as a function of the temperature and by that the viscosity of the oil.
  • a member 10 is configured to control the relation of flow of oil from the pump 3 to the components 4 and the flow of oil recirculated to the suction side of the pump as a function of the temperature and by that the viscosity of the oil.
  • Such recirculation of oil may be used when starting an engine connected to a gear box at a low temperature, such as for instance - 30°C, which means that the oil will be cold and have a high viscosity.
  • a further by-pass loop 1 1 is arranged within the module to conduct oil to the components 4 to pass the filter 6 without flowing therethrough, and means 12 is configured to control the relation of flow of oil through the filter and the flow passing it. If the filter starts to be full of debris and form a high resistance to the flow of oil through the lubrication system an increasing part of the oil flow may be led in the loop 1 1 .
  • a lubrication system further comprises within the module a by-pass loop 13 configured to conduct oil to the components 4 to pass the heat exchanger 8 without flowing therethrough and means 14 configured to control the relation of flow of oil through the heat exchanger and flow passing it. When there is no need to cool the oil it may by this be directed to pass the heat exchanger through the loop 13.
  • the module 1 with pump 3, filter 6 and heat exchanger 8 attached to the base plate 2 is shown in Fig 2.
  • the base plate 2 has a bottom 15 and a wall 16 surrounding this bottom which together with the bottom forms a volume 17 configured to receive and contain a part of the oil of the lubrication oil sump 5.
  • a gear wheel 18 is arranged to drive the pump 3 by engaging a gear wheel not shown arranged on a countershaft of a gear box.
  • the module 1 is configured to be removably attached to walls of a gear box casing 19 (see also Figs 3 and 4) by bolts 20 arranged around the base plate 2 of the module allowing the module to be lifted out from the gear box casing, as shown in Fig 3, for maintenance and/or repair of parts belonging to the module.
  • the base plate 2 has for this sake dimensions corresponding to dimension of an opening 21 in a gear box casing 19, as in a motor vehicle 22.
  • all essential members of the lubrication system may be lifted out as one unit from a gear box casing for maintenance and/or repair of any of said members.
  • the heat exchanger may be arranged outside and distant to the module, although it is advantageous to have it included in the module.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

A lubrication system for a gear box comprises a pump (3) for pumping lubrication oil to components inside the gear box, a lubrication oil sump (5) for providing lubrication oil to be sucked therefrom by the pump and receive such oil returned thereto after lubrication of said components. An oil filter (6) is arranged in an oil conducting path from the pump to the components. A module (1) with a base plate (2) has the pump (3) and filter (6) attached thereto. The base plate is configured to form a part of an outer gear box casing and to be removably attached to walls of the gear box casing to allow the module to be lifted out therefrom for maintenance and/or repair of parts belonging to the module. The base plate (2) is designed to be attached to walls of a gear box casing in a bottom region of the casing to by at least base plate portions be in contact with oil in the lubrication oil sump.

Description

Lubrication system for a gear box
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lubrication system for a gear box, which system comprises
• a pump configured to pump lubrication oil to components like shafts and bearings inside a casing for the gear box,
• a lubrication oil sump configured to provide lubrication oil to be sucked therefrom by said pump and receive such oil returned thereto after lubrication of said components,
• an oil filter arranged in an oil conducting path from the pump to said components at a discharge side of the pump to filter out debris from the oil before reaching said components, and
• a module with a base plate to which the pump and filter are attached,
in which the base plate is configured to form a part of an outer gear box casing and to be removably attached to walls of the gear box casing to allow the module to be lifted out therefrom for maintenance and/or repair of parts belonging to the module.
The invention relates to lubrication systems for gear boxes used in any type of power transmission, such as industrial applications and all types of motor vehicles, although the invention is particularly applicable to motor vehicles and especially wheeled utility vehicles, such as trucks or lorries and buses. This is the reason for below discussing the invention for this particular use without for that sake restricting it thereto. Thus, a lubrication system for a gear box needs a number of different members and these are in most gear boxes located in different regions inside the gear box casing. This results in complications when trying to reach the different members of the lubrication system for maintenance and/or repair thereof making such measures time consuming and by that costly to carry out.
BACKGROUND ART
US 2016/0069446 A1 discloses a lubrication system for a gear box of the type defined in the introduction trying to address the problem mentioned above by providing the module with a base plate to which the pump and the filter of the lubrication system are attached and arranging the base plate so that the module is allowed to be lifted out of the gear box casing. This facilitates maintenance and/or repair of the pump and filter of such a lubrication system. However, there is of course an ongoing attempt to improve such a lubrication system with respect to the efficiency to reliably carry out maintenance and/or repair of parts belonging to the system.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a lubrication system of the type defined in the introduction being improved in at least some aspect with respect to such lubrication systems already known.
This object is according to the invention obtained by providing such a system with the features listed in patent claim 1 . Thus, the base plate of the module is designed to be attached to walls of a gear box casing in a bottom region of the casing to by at least base plate portions be in contact with oil in said lubrication oil sump. This means that the pump and the filter will when the module is arranged in place in a gear box casing be in a position close to the oil of the system in form of the oil sump favourable for disconnecting these lubrication system members from the oil conducting path when there is a need of maintenance and/or repair thereof.
According to an embodiment of the invention the base plate of the module has a bottom and a wall surrounding this bottom which together with the bottom forms a volume configured to receive and contain oil of the lubrication oil sump. It is preferred for the members of the lubrication system belonging to the module to have the module providing at least a part of the lubrication oil sump.
According to another embodiment of the invention the module is configured to be attached to portions of a bottom wall of a gear box casing while participating in forming this bottom wall and said volume is configured to contain a part of the oil of said lubrication oil sump. According to another embodiment of the invention the base plate is configured to have dimensions corresponding to dimensions of an opening in a gear box casing through which the module is configured to be introduced for arranging it in the gear box and lifted out for said maintenance and/or repair. According to another embodiment of the invention the pump has a member connectable to a shaft of a gear box for driving the pump by said shaft. Providing power to drive the pump by using a said shaft for this, such as through a gear wheel on said shaft engaging a gear wheel of the pump, is advantageous.
According to another embodiment of the invention said member of the pump is configured to be connected to a countershaft of a gear box to be driven thereby. This constitutes a suitable way of designing a pump arranged in a said module in a lubrication system for a gear box.
According to another embodiment of the invention the system comprises a heat exchanger arranged at the discharge side of the pump in said oil conducting path allowing cooling of the oil before reaching the components, and the heat exchanger is a part of the module and attached to the base plate. This means that the heat exchanger will be close to the pump and easily removed from a gear box with the module for maintenance and/or repair.
According to another embodiment of the invention the system comprises within the module a by-pass loop configured to conduct oil to the components to pass the heat exchanger without flowing therethrough and means configured to control the relation of flow of oil through the heat exchanger and flow passing it. It is favourable to have also such a loop within the module allowed to be lifted out from a gear box casing facilitating this action of lifting out. According to another embodiment of the invention the system comprises within the module a by-pass loop configured to conduct oil to the components to pass the filter without flowing therethrough and means configured to control the relation of flow of oil through the filter and the flow passing it. It is favourable to have also such a loop within the module allowed to be lifted out from a gear box casing facilitating this action of lifting out.
According to another embodiment of the invention the system comprises within the module an oil conducting loop diverting oil from the oil conducting path directly at the discharge of the pump to the suction side of the pump and a member controlling the relation of flow of oil from the pump to said components and the flow of oil recirculated to the suction side of the pump as a function of the temperature and by that the viscosity of the oil. It is favourable to have also such a loop within the module allowed to be lifted out from a gear box casing facilitating this action of lifting out.
The invention also relates to a gear box for transmission of mechanic power and a motor vehicle according to the appended claims directed thereto.
Further advantages as well as advantageous features of the invention will appear from the description following below.
BRIEF DESCRIPTION OF THE DRAWINGS
With reference to the appended drawings, below follows a specific description of an embodiment of the invention cited as an example. In the drawings:
Fig 1 is a schematic view used to illustrate a lubrication system according to an embodiment of the invention,
Fig 2 is a perspective view of parts of a lubrication system according to the embodiment of the invention illustrated in Fig 1 ,
Fig 3 is an exploded view used to illustrate how the module of a lubrication system shown in Fig 1 and 2 may be lifted out of a gear box casing for maintenance and/or repair of members arranged therein, and
Fig 4 is a view showing the module secured to the gear box casing shown in Fig 3.
DETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION
A lubrication system according to an embodiment of the invention is very schematically illustrated in Fig 1 , and this has all members included in a module 1 having a base plate 2 to which a pump 3 is attached. The pump 3 is configured to pump lubrication oil to components 4 like shafts and bearings inside a gear box casing. A lubrication oil sump 5 is configured to provide lubrication oil to be sucked therefrom by the pump 3 and receive such oil returned thereto after lubrication of the components 4. In this embodiment of the invention the base plate 2 will be immersed in the oil sump 5 although not shown so in Fig 1 illustrating the function of the lubrication system.
An oil filter 6 is arranged in the oil conducting path 7 from the pump to the components 4 at a discharge side of the pump to filter out debris from the oil before reaching the components 4. Furthermore, a heat exchanger 8 is arranged in the oil conducting path 7 from the pump to the components 4 downstream the filter 6 allowing cooling of the oil before reaching the components. The pump, the filter and the heat exchanger are all attached to the base plate 2 of the module 1 . It is shown how an oil conducting loop 9 diverting oil from the oil conducting path directly at the discharge of the pump to the suction side of the pump is included in the module, and a member 10 is configured to control the relation of flow of oil from the pump 3 to the components 4 and the flow of oil recirculated to the suction side of the pump as a function of the temperature and by that the viscosity of the oil. Such recirculation of oil may be used when starting an engine connected to a gear box at a low temperature, such as for instance - 30°C, which means that the oil will be cold and have a high viscosity.
A further by-pass loop 1 1 is arranged within the module to conduct oil to the components 4 to pass the filter 6 without flowing therethrough, and means 12 is configured to control the relation of flow of oil through the filter and the flow passing it. If the filter starts to be full of debris and form a high resistance to the flow of oil through the lubrication system an increasing part of the oil flow may be led in the loop 1 1 . A lubrication system further comprises within the module a by-pass loop 13 configured to conduct oil to the components 4 to pass the heat exchanger 8 without flowing therethrough and means 14 configured to control the relation of flow of oil through the heat exchanger and flow passing it. When there is no need to cool the oil it may by this be directed to pass the heat exchanger through the loop 13.
The module 1 with pump 3, filter 6 and heat exchanger 8 attached to the base plate 2 according to a preferred embodiment of the invention is shown in Fig 2. The base plate 2 has a bottom 15 and a wall 16 surrounding this bottom which together with the bottom forms a volume 17 configured to receive and contain a part of the oil of the lubrication oil sump 5.
Furthermore, it is shown how a gear wheel 18 is arranged to drive the pump 3 by engaging a gear wheel not shown arranged on a countershaft of a gear box.
The module 1 is configured to be removably attached to walls of a gear box casing 19 (see also Figs 3 and 4) by bolts 20 arranged around the base plate 2 of the module allowing the module to be lifted out from the gear box casing, as shown in Fig 3, for maintenance and/or repair of parts belonging to the module. Thus, the base plate 2 has for this sake dimensions corresponding to dimension of an opening 21 in a gear box casing 19, as in a motor vehicle 22.
Accordingly, in the embodiment shown in the figures all essential members of the lubrication system may be lifted out as one unit from a gear box casing for maintenance and/or repair of any of said members.
The invention is of course in no way restricted to the embodiment described above, since many possibilities for modifications thereof are likely to be obvious to one skilled in the art without having to deviate from the scope of the invention defined in the appended claims. The heat exchanger may be arranged outside and distant to the module, although it is advantageous to have it included in the module.

Claims

Claims
1. A lubrication system for a gear box, which system comprises
• a pump (3) configured to pump lubrication oil to components (4) like shafts and bearings inside a casing for the gear box,
• a lubrication oil sump (5) configured to provide lubrication oil to be sucked therefrom by said pump (3) and receive such oil returned thereto after lubrication of said components,
• an oil filter (6) arranged in an oil conducting path (7) from the pump to said components at a discharge side of the pump to filter out debris from the oil before reaching said components, and
• a module (1 ) with a base plate (2) to which the pump (3) and filter (6) are attached,
in which the base plate (2) is configured to form a part of an outer gear box casing (19) and to be removably attached to walls of the gear box casing to allow the module (1 ) to be lifted out therefrom for maintenance and/or repair of parts belonging to the module,
characterized in that said base plate (2) is designed to be attached to walls of a gear box casing (19) in a bottom region of the casing to by at least base plate portions be in contact with oil in said lubrication oil sump (5).
2. A system according to claim 1 , characterized in that the base plate (2) of the module (1 ) has a bottom (15) and a wall (16) surrounding this bottom which together with the bottom forms a volume configured to receive and contain oil of the lubrication oil sump (5).
3. A system according to claim 2, characterized in that the module (1 ) is configured to be attached to portions of a bottom wall of a gear box casing (19) while participating in forming this bottom wall and said volume is configured to contain a part of the oil of said lubrication oil sump (5).
4. A system according to any of the preceding claims, characterized in that the base plate (2) is configured to have dimensions corresponding to dimensions of an opening (21 ) in a gear box casing (19) through which the module (1 ) is configured to be introduced for arranging it in the gear box and lifted out for said maintenance and/or repair.
5. A system according to any of the preceding claims, characterized in that the pump (3) has a member (18) connectable to a shaft of a gear box for driving the pump by said shaft.
6. A system according to claim 5, characterized in that said member (18) of the pump (3) is configured to be connected to a countershaft of a gear box to be driven thereby.
7. A system according to any of the preceding claims, characterized in that the system comprises a heat exchanger
(8) arranged at the discharge side of the pump (3) in said oil conducting path (7) allowing cooling of the oil before reaching the components (4), and that the heat exchanger (8) is a part of the module (1 ) and attached to the base plate (2).
8. A system according to claim 7, characterized in that the system comprises within the module (1 ) a by-pass loop (13) configured to conduct oil to the components to pass the heat exchanger (8) without flowing therethrough and means (14) configured to control the relation of flow of oil through the heat exchanger and flow passing it.
9. A system according to any of the preceding claims, characterized in that the system comprises within the module (1 ) a by-pass loop (1 1 ) configured to conduct oil to the components to pass the filter (6) without flowing therethrough and means (12) configured to control the relation of flow of oil through the filter and the flow passing it.
10. A system according to any of the preceding claims, characterized in that the system comprises within the module (1 ) an oil conducting loop (9) diverting oil from the oil conducting path (7) directly at the discharge of the pump (3) to the suction side of the pump and a member (10) controlling the relation of flow of oil from the pump (3) to said components (4) and the flow of oil recirculated to the suction side of the pump as a function of the temperature and by that the viscosity of the oil.
1 1. A gear box for transmission of mechanic power, characterized in that it has a lubrication system according to any of the preceding claims.
12. A gear box according to claim 1 1 , characterized in that it is a gear box configured to be arranged in a motor vehicle (22), such as a wheeled heavy motor vehicle, especially a truck or a bus.
13. A motor vehicle, especially a heavy wheeled motor vehicle, such as a truck or a bus, characterized in that it has a gear box provided with a lubrication system according to any of claims 1 -10.
PCT/SE2019/051105 2018-11-14 2019-11-04 Lubrication system for a gear box Ceased WO2020101550A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112019004777.9T DE112019004777T5 (en) 2018-11-14 2019-11-04 Lubrication system for a gear

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1851417 2018-11-14
SE1851417-4 2018-11-14

Publications (1)

Publication Number Publication Date
WO2020101550A1 true WO2020101550A1 (en) 2020-05-22

Family

ID=70732167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2019/051105 Ceased WO2020101550A1 (en) 2018-11-14 2019-11-04 Lubrication system for a gear box

Country Status (2)

Country Link
DE (1) DE112019004777T5 (en)
WO (1) WO2020101550A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020203458A1 (en) 2020-03-18 2021-09-23 Mahle International Gmbh Transmission oil filter module
CN118934952A (en) * 2024-10-14 2024-11-12 江苏速豹动力科技有限公司 A support assembly for an electric drive axle lubrication system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284216A2 (en) * 1987-03-23 1988-09-28 General Motors Corporation Valve assembly for an automatic transmission
DE19519227A1 (en) * 1994-06-15 1995-12-21 Kanzaki Kokyukoki Mfg Co Ltd Gear assembly for tractors
US5599247A (en) * 1994-06-15 1997-02-04 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission assembly for tractors
EP1186801A2 (en) * 2000-09-07 2002-03-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission assembly for working vehicles
US20020032093A1 (en) * 2000-09-08 2002-03-14 Mark Kopec Transmission control apparatus
DE102006012838A1 (en) * 2005-05-11 2006-11-23 Zf Friedrichshafen Ag Automatic transmission for motor vehicle has additional oil pump installed or integrated in oil sump and provided with suction line in sump which is connectable to oil filter
DE102010010804A1 (en) * 2010-03-09 2011-09-15 Sew-Eurodrive Gmbh & Co. Kg Arrangement for lubricating a gearbox, gearbox and construction kit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284216A2 (en) * 1987-03-23 1988-09-28 General Motors Corporation Valve assembly for an automatic transmission
DE19519227A1 (en) * 1994-06-15 1995-12-21 Kanzaki Kokyukoki Mfg Co Ltd Gear assembly for tractors
US5599247A (en) * 1994-06-15 1997-02-04 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission assembly for tractors
EP1186801A2 (en) * 2000-09-07 2002-03-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission assembly for working vehicles
US20020032093A1 (en) * 2000-09-08 2002-03-14 Mark Kopec Transmission control apparatus
DE102006012838A1 (en) * 2005-05-11 2006-11-23 Zf Friedrichshafen Ag Automatic transmission for motor vehicle has additional oil pump installed or integrated in oil sump and provided with suction line in sump which is connectable to oil filter
DE102010010804A1 (en) * 2010-03-09 2011-09-15 Sew-Eurodrive Gmbh & Co. Kg Arrangement for lubricating a gearbox, gearbox and construction kit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020203458A1 (en) 2020-03-18 2021-09-23 Mahle International Gmbh Transmission oil filter module
US12516723B2 (en) 2020-03-18 2026-01-06 Mahle International Gmbh Transmission oil filter module
CN118934952A (en) * 2024-10-14 2024-11-12 江苏速豹动力科技有限公司 A support assembly for an electric drive axle lubrication system
CN118934952B (en) * 2024-10-14 2025-01-24 江苏速豹动力科技有限公司 A support assembly for an electric drive axle lubrication system

Also Published As

Publication number Publication date
DE112019004777T5 (en) 2021-06-10

Similar Documents

Publication Publication Date Title
CN107923517B (en) Hybrid drive module
US9927020B2 (en) Axle Assembly
EP2450217B1 (en) Cooling system
US10072660B2 (en) Pumping device for pumping oil from a storage container to a transmission system of a motor vehicle
CN101484728B (en) A heat exchanger with an integrated bypass valve and a gearbox with a heat exchanger.
DE112020006481T5 (en) ENGINE UNIT
CN105284040A (en) Electric Pumps for Hybrid Vehicles
CN105065224A (en) Fracturing pump transmission system and electric fracturing pry
US10647191B2 (en) Transmission for a motor vehicle
US20230417170A1 (en) Power System Radiators and Power Systems Having Radiators
DE102014117768A1 (en) Electric oil pump for an automatic transmission
US20060213462A1 (en) Heat exchanger integrated in a transmission
US12460571B2 (en) Cooling module for a motor vehicle for cooling a drive unit of the motor vehicle, and motor vehicle and method for assembling a motor vehicle
CA2646999A1 (en) Combination power plant/fluid compressor for service vehicles
CN116141953A (en) Cooling device, hybrid power system and vehicle
CN107110333A (en) Oil pump device for motor vehicle
DE102006029571A1 (en) Drive for e.g. track vehicle, has electric engine e.g. motor and/or generator for dissipating electrical energy, and power electronics for supplying electrical energy, where electronics is cooled by cooling fluid in boiling cooling method
US9290092B2 (en) Chain drive power take off for hydraulic pump
CN105221684A (en) The two shift transmission of electric vehicle front-engine rear-drive
CN112780757A (en) Hybrid vehicle transmission oil circuit system and vehicle
US8646563B2 (en) Work machine with compact generator and hydraulic drive assembly
EP2232026B1 (en) Cooling system for motor vehicle
CN105539117A (en) Hybrid driveline for a motor vehicle
US10994608B2 (en) Vehicular electric oil pump device
US4875521A (en) Electric fan assembly for over-the-road trucks

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19884592

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19884592

Country of ref document: EP

Kind code of ref document: A1