CN100445603C - Lubrication system for a transmission output differential mechanism - Google Patents
Lubrication system for a transmission output differential mechanism Download PDFInfo
- Publication number
- CN100445603C CN100445603C CNB2005100860102A CN200510086010A CN100445603C CN 100445603 C CN100445603 C CN 100445603C CN B2005100860102 A CNB2005100860102 A CN B2005100860102A CN 200510086010 A CN200510086010 A CN 200510086010A CN 100445603 C CN100445603 C CN 100445603C
- Authority
- CN
- China
- Prior art keywords
- fluid
- torque
- converters
- differential mechanism
- branch road
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
A differential lubrication system includes structure forming a torque converter feed passage in fluid communication with a fluid source and in which fluid is selectively supplied to a torque converter. Structure forming a branch passage for lubricating a differential mechanism extends from the torque converter feed passage to divert fluid to the differential mechanism prior to the fluid being supplied to the torque converter. Two flow restrictions and a valve mechanism may be employed to control lubrication of the differential mechanism. One of the flow restrictions may form a nozzle so that fluid is sprayed onto the differential mechanism. A method of lubricating the differential mechanism is also provided.
Description
The cross reference of related application
The application requires to enjoy in the rights and interests of the U.S. Provisional Application of submitting on July 20th, 2,004 60/589,276, so the mode of this application by reference is combined in here.
Technical field
The present invention relates to the lubricated of transmission device, and be particularly related to the gear lubrication of differential mechanism in the Power Train.
Background technique
The typical Power Train that is used for vehicle transmission gear comprises output differential, and this differential mechanism needs certain lubricating.It is this that lubricated normally lubricating fluid realizes by supplying with from transmission device casing splashed oil or from total lubricating oil path, in second kind of situation, the fluid torque-converters of flowing through earlier, here owing to the torque-converters heating is heated, then by cooler (part of vehicle radiator), here fluid is cooled, and then supplies with and give the various lubrication channels that spread all over transmission device.
Summary of the invention
For the differential mechanism of Power Train provides a kind of improved lubrication system, described Power Train has transmission device, and torque-converters and fluid source be oil sump and pump for example.Provided fluid to differential mechanism before giving torque-converters in FLUID TRANSPORTATION, it all is available that the different assembly of lubrication system and differential mechanism is selected.Therefore, the effective cooling with potential cryogen is provided for differential mechanism.Cooling fluid directly arrives at differential mechanism, preferably adopts the mode of spraying.
The lubrication system of Power Train differential mechanism comprises the structure that forms the torque-converters supply passage, described passage be communicated with fluid source and torque-converters fluid in case from fluid source to the torque-converters conveyance fluid.Lubrication system also comprises the structure that forms branch road, and described branch road begins to extend from the torque-converters supply passage between fluid source and the torque-converters, and is communicated with the differential mechanism fluid.The fluid that is provided by fluid source that branch road transmission comes from the torque-converters supply passage is with the cooling differential mechanism.
In one aspect of the invention, pressure regulating mechanism is communicated with between fluid source and torque-converters supply passage and with the two fluid. and pressure regulating mechanism such as pressure regulator valve are controlled by control gear such as transmission device control unit, thereby distribute the fluid of being supplied with by fluid source to the torque-converters supply passage in selectable mode.
In another aspect of the present invention, lubrication system comprises the structure that forms first passage, described first passage is between fluid source and pressure regulating mechanism, and be communicated with the two fluid. form the structure of second channel, between the pressure regulating mechanism and torque-transmitting mechanisms of described second channel in transmission device, and be communicated with the two fluid.Thereby pressure regulating mechanism is the controlled fluid of being supplied with by fluid source to the second channel distribution from first passage in selectable mode, is the stress level of being scheduled at least thereby form in second channel, is used for the controlling torque transfer mechanism.Thereby pressure regulating mechanism still be controlled in second channel, form predetermined pressure level in selectable mode after, distribute the fluid of supplying with by fluid source to the torque-converters supply passage.Therefore, torque-converters only just is supplied cooling fluid after the pressure demand of torque-transmitting mechanisms satisfies.
In another aspect of the present invention, branch road is formed with a metering hole, and this hole has reduced the hydrodynamic pressure of flowing through wherein. and metering hole can be positioned at the connector of branch road.
In also one side of the present invention, valve, as ball check valve, thereby be arranged in branch road and when the predetermined fluid pressure of branch road reaches, allow the direction of flow differential mechanism in selectable mode. by preventing that fluid does not flow when the predetermined fluid pressure level reaches, valve has prevented torque-converters emptying undesirably when the transmission device off-duty.
In still another aspect of the invention, the structure that forms return flow path is communicated with differential mechanism and fluid source fluid, thus make be directed passing through branch road with the fluid that cools off differential mechanism via return flow path Returning fluid source.
The invention provides a kind of power transmission system of vehicle, this power train comprises motor, transmission device and the torque-converters of transferring power between motor and transmission device. described transmission device comprises differential mechanism recited above, fluid source, torque-converters supply passage and branch road.
The present invention also provides a kind of method of lubrication gear differential mechanism.This method comprises fluid from fluid source guiding torque-converters so that the cooling torque-converters. this method also comprises the segment fluid flow that the differential mechanism transmission to the torque-converters upstream comes from fluid source, thereby makes from fluid source and the fluid of the torque-converters of not flowing through cooling differential mechanism.
In one aspect of the invention, described method comprises that the fluid guiding that will come from fluid source is to transmission component (for example torque-transmitting mechanisms), and control flows is to the fluid of torque-converters, thereby only make that fluid is directed to torque-converters again after the fluid that is directed to transmission component obtains at least predetermined pressure level.
Of the present invention aspect another in, being characterized as of fluid of guiding differential mechanism has first stress level.Described method also comprises the flow of the fluid of restricted guidance differential mechanism, has second stress level that is lower than first stress level thereby make described fluid be characterised in that.
In another aspect of the present invention, described method comprises when being characterized as of fluid has the pressure that is lower than predetermined pressure level, the flowing of the fluid of the differential mechanism that prevents to lead.The above-mentioned step that prevents can be realized by the ball check valve that for example is arranged in branch road.
Above-mentioned feature and advantage of the present invention and further feature and advantage can draw at an easy rate from the detailed description to being used for implementing best mode of the present invention below in conjunction with accompanying drawing.
Description of drawings
The figure that schematically shows that has shown the differential lubrication system that in power transmission system of vehicle, adopts.
Embodiment
As shown in the figure, the Power Train 100 that is used for vehicle 103 has conventional motor 102, transmission device 104 and torque-converters 106, and described torque-converters 106 provides kinetic current from motor 102 to transmission device 104 in hydrokinetic mode as known.Torque-converters 106 is compared difference with other fluid coupler and is to have increased transmission of torque.Torque in the torque-converters 106 and work cycle loading demands produce heat, the circulation of fluid of the torque-converters 106 of need flowing through once more before torque-converters 106 imports cooling fluids earlier through radiator or other thermal pump (not shown).
Can be called as of torque-converters supply passage 116 extensions (that is, the oil by pump 108 supplied with offer torque-converters 106 before) of the third channel 118 of branch road from torque-converters 106 upstreams.Branch road 118 makes fluid to be transferred to differential mechanism 128 from pump 108.Differential mechanism 128 is enclosed in the transmission device 104 (that is, being positioned at the transmission device casing), and is identical with the situation of the transmission device of laterally installing with traditional front-wheel drive.Branch road 118 has the first optional current limiting element 120, the ball check valve 122 of optional spring bias voltage, and the second optional current limiting element 124.The position of current limiting element 120 and safety check 122 can exchange.First and second current limiting elements 120 and 124 are holes, and it can make relatively low fluid flow become possibility by producing the pressure reduction.By limited flow, each hole fluid downstream pressure is lower than the pressure (for example, first stress level is present in the branch road 118 of current limiting element 120 upstreams, and the second low pressure level is present in the branch road 118 in current limiting element 120 downstreams) before the hole of flowing through.Branch road 118 can be formed the form that second current limiting element is a mouth of pipe (that is, branch road 118 is widened) after first current limiting element.Orifice configuration is as a sprayer, by 126 indications.Current limiting element 120,124 can be the hole that is respectively formed in the connector 121,125, and described connector 121,125 is placed in the branch road 118.
Therefore, by the structure shown in the reference drawing, the method of a kind of as can be known lubrication mechanism 128, comprise (promptly from fluid source, pump 108 and the oil sump 132 that has optional filters 134) guide fluid to lead to torque-converters 106 with the cooling torque-converters. this method comprises that also the fluid transfer part that will be guided arrives the differential mechanism 128 of torque-converters 106 upstreams, thereby make owing to these fluids directly come from pump 108 and oil sump 132, therefore differential mechanism 128 is by the fluid cooling of the torque-converters 106 of not flowing through. and this method also comprises from fluid source 108,132 and the fluid guiding that comes to transmission component torque-transmitting mechanisms 115 for example, and control flows is to the fluid of torque-converters 106, thereby only make to be directed to after torque-transmitting mechanisms 115 obtains predetermined (ideal) stress level that fluid is directed to torque-converters 106. again at fluid
This method can also comprise the fluid flow of restricted guidance differential mechanism 128, thereby make it have second stress level lower than first stress level, described first stress level is present in current limiting element as on first current limiting element 120 or second current limiting element 124. this method can also comprise when fluid and not reach when being predetermined pressure level at least, prevents that the fluid that is directed to differential mechanism 128 from flowing. this function is realized by the ball check valve among the embodiment shown in the figure 122. this method can also comprise will transmission fluid be sprayed onto on the differential mechanism 128 with cooling differential mechanism 128.
Implement best mode of the present invention although described in detail, yet those skilled in the art will recognize that and in the scope of appended claim, have various be used to implement alternative design of the present invention and mode of executions.
Claims (19)
1. a lubrication system that is used for the differential mechanism of Power Train comprises transmission device, torque-converters and fluid source, and described lubrication system comprises:
Form the structure of torque-converters supply passage, described supply passage is communicated with fluid source and torque-converters fluid, and can carry the fluid that is provided by fluid source to torque-converters; And
Form the structure of branch road, described branch road begins to extend from the described torque-converters supply passage between fluid source and the torque-converters, and be communicated with the differential mechanism fluid, the fluid that is provided by fluid source that the transmission of described branch road comes from the torque-converters supply passage is with the cooling differential mechanism.
2. lubrication system as claimed in claim 1 also comprises:
Between fluid source and torque-converters supply passage and the pressure regulating mechanism that is communicated with the two fluid, thereby described pressure regulating mechanism is controlledly to distribute the fluid of being supplied with by fluid source to described torque-converters supply passage in selectable mode.
3. lubrication system as claimed in claim 2 is characterized in that described transmission device comprises the fluid power torque-transmitting mechanisms, and described lubrication system also comprises:
Form the structure of first passage, described first passage is communicated with fluid source and described pressure regulating mechanism fluid; And
Form the structure of second channel, described second channel is communicated with pressure regulating mechanism and torque-transmitting mechanisms fluid;
Wherein, thereby described pressure regulating mechanism is the controlled fluid of being supplied with by fluid source to described second channel distribution from described first passage in selectable mode, thereby in second channel, form predetermined at least stress level, be used for the controlling torque transfer mechanism, and after in second channel, forming predetermined pressure level, distribute the fluid of supplying with by fluid source to described torque-converters supply passage.
4. lubrication system as claimed in claim 1 is characterized in that, described branch road is formed with at least one metering hole that can be used for reducing described branch road hydrodynamic pressure.
5. lubrication system as claimed in claim 1 also comprises:
At least one has the connector of metering hole, and described at least one connector is placed in the described branch road, and can be used in reduction hydrodynamic pressure wherein.
6. lubrication system as claimed in claim 1 also comprises:
Be arranged in the valve of described branch road, thus this valve can operate when reaching the predetermined fluid pressure level in the described branch road in selectable mode and allow fluid this valve of flowing through, described valve prevents that thus torque-converters is by the branch road emptying when the transmission device off-duty.
7. lubrication system as claimed in claim 1 also comprises:
Form the structure of return flow path, this return flow path is communicated with differential mechanism and fluid source fluid; And wherein be directed through described branch road with the cooling differential mechanism fluid via described return flow path Returning fluid source.
8. power transmission system of vehicle comprises:
Motor;
Transmission device;
The torque-converters of transferring power between described motor and described transmission device;
Wherein, described transmission device comprises:
Differential mechanism;
Fluid source;
Form the structure of torque-converters supply passage, described supply passage and is communicated with the two fluid between described fluid source and described torque-converters; And
Form the structure of branch road, described branch road and is communicated with the two fluid between described torque-converters supply passage and described differential mechanism, described branch road can transmit from described torque-converters supply passage and the fluid that comes to cool off differential mechanism.
9. power transmission system of vehicle as claimed in claim 8 also comprises:
Control unit; And
Between described fluid source and described torque-converters supply passage and the pressure regulating mechanism that is communicated with the two fluid, thereby described pressure regulating mechanism can distribute the fluid of being supplied with by described fluid source in selectable mode by described control unit control to described torque-converters supply passage.
10. power transmission system of vehicle as claimed in claim 9 is characterized in that, described transmission device also comprises:
The fluid power torque-transmitting mechanisms;
Form the structure of first passage, described first passage is communicated with described fluid source and described pressure regulating mechanism fluid; And
Form the structure of second channel, described second channel is communicated with described pressure regulating mechanism and described torque-transmitting mechanisms fluid;
Wherein, thereby described pressure regulating mechanism is the controlled fluid of being supplied with by fluid source to described second channel distribution from described first passage in selectable mode, thereby in second channel, form predetermined at least stress level, be used to control described torque-transmitting mechanisms, and after in second channel, forming predetermined pressure level, distribute the fluid of supplying with by fluid source to described torque-converters supply passage.
11. power transmission system of vehicle as claimed in claim 8 is characterized in that, described branch road is formed with at least one metering hole that can be used for reducing described branch road hydrodynamic pressure.
12. power transmission system of vehicle as claimed in claim 8 also comprises:
At least one has the connector of metering hole, and described at least one connector is placed in the described branch road, and can be used in reduction hydrodynamic pressure wherein.
13. power transmission system of vehicle as claimed in claim 8 also comprises:
Be arranged in the valve of described branch road, thus this valve can operate when reaching the predetermined fluid pressure level in the described branch road in selectable mode and allow fluid this valve of flowing through, described valve prevents that thus torque-converters is by the branch road emptying when the transmission device off-duty.
14. power transmission system of vehicle as claimed in claim 8 also comprises:
Form the structure of return flow path, this return flow path is communicated with described differential mechanism and described fluid source fluid; And wherein be directed returning described fluid source with the fluid that cools off described differential mechanism via described return flow path through described branch road.
15. the lubricating method of a transmission device differential mechanism, this method comprises:
Fluid is led torque-converters so that the cooling torque-converters from fluid source; And
The segment fluid flow that is led to the transmission of the differential mechanism of torque-converters upstream, thus make from fluid source and the fluid of the torque-converters of not flowing through cooling differential mechanism.
16. method as claimed in claim 15 also comprises:
To guide from the fluid that fluid source comes to transmission component; And
Control flows is to the fluid of torque-converters, thereby only makes that fluid is directed to torque-converters again after the fluid that is directed to transmission component obtains at least predetermined pressure level.
17. method as claimed in claim 15 is characterized in that, the fluid of guiding differential mechanism has first stress level, and described method also comprises:
The flow of the fluid of restricted guidance differential mechanism, thus described fluid made have to be lower than second stress level of first stress level.
18. method as claimed in claim 15 also comprises:
When fluid had the pressure that is lower than predetermined pressure level, flowing of the fluid of the differential mechanism that prevents to lead prevented torque-converters emptying when the transmission device off-duty thus.
19. method as claimed in claim 15 also comprises:
The fluid that is transmitted is sprayed onto on the differential mechanism so that it is cooled off.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58927604P | 2004-07-20 | 2004-07-20 | |
| US60/589276 | 2004-07-20 | ||
| US11/152017 | 2005-06-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1840941A CN1840941A (en) | 2006-10-04 |
| CN100445603C true CN100445603C (en) | 2008-12-24 |
Family
ID=37030077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100860102A Expired - Fee Related CN100445603C (en) | 2004-07-20 | 2005-07-20 | Lubrication system for a transmission output differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100445603C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7976419B2 (en) * | 2008-12-11 | 2011-07-12 | Ford Global Technologies, Llc | Control of the flow rate in a transmission oil cooler |
| CN101870280B (en) * | 2010-06-17 | 2011-10-26 | 徐工集团工程机械股份有限公司科技分公司 | Loader and circular cooling and lubricating system of torque converter thereof |
| DE102012110762A1 (en) * | 2012-11-09 | 2014-05-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Arrangement for supplying lubricating oil to gear items of combustion engine of motor vehicle, has oil line system comprising passages, and lateral drive for driving oil pump to convey lubricating oil to motor vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048587A (en) * | 1989-07-05 | 1991-01-16 | 非特烈斯港齿轮工厂股份公司 | The lubricating fitting of dynamic power shift gear box |
| CN1212929A (en) * | 1997-09-02 | 1999-04-07 | 易通公司 | Mechanical transmission cooling and lubrication using associated engine systems |
| US6244385B1 (en) * | 1998-08-18 | 2001-06-12 | Honda Giken Kogyo Kabushiki Kaisha | Lubrication pressure controller |
| US6527074B1 (en) * | 1999-11-25 | 2003-03-04 | Honda Giken Kogyo Kabushiki Kaisha | Lubricating structure for a hybrid vehicle |
| US6718847B2 (en) * | 2001-07-05 | 2004-04-13 | Deere & Company | Pressure-release device for a transmission housing |
-
2005
- 2005-07-20 CN CNB2005100860102A patent/CN100445603C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048587A (en) * | 1989-07-05 | 1991-01-16 | 非特烈斯港齿轮工厂股份公司 | The lubricating fitting of dynamic power shift gear box |
| CN1212929A (en) * | 1997-09-02 | 1999-04-07 | 易通公司 | Mechanical transmission cooling and lubrication using associated engine systems |
| US6244385B1 (en) * | 1998-08-18 | 2001-06-12 | Honda Giken Kogyo Kabushiki Kaisha | Lubrication pressure controller |
| US6527074B1 (en) * | 1999-11-25 | 2003-03-04 | Honda Giken Kogyo Kabushiki Kaisha | Lubricating structure for a hybrid vehicle |
| US6718847B2 (en) * | 2001-07-05 | 2004-04-13 | Deere & Company | Pressure-release device for a transmission housing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1840941A (en) | 2006-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101611246B (en) | Hydraulic control unit | |
| CN106233044B (en) | Gear arrangement with hydraulic system | |
| CN100523565C (en) | Hydraulic pressure control apparatus for a vehicular power transmitting device | |
| CN101417608A (en) | Regulating transmission fluid and engine coolant temperatures in a motor vehicle | |
| CN101761642B (en) | Control of flow rate in transmission oil cooler | |
| CN105209848B (en) | Valve system for preheating and cooling down power transmitting fluids configures | |
| US20160084142A1 (en) | Automatic transmission fluid thermal conditioning system | |
| CN104791071B (en) | Heat management system and method for vehicle | |
| JP4943668B2 (en) | Transmission hydraulic system | |
| EP3267007B1 (en) | Utility vehicle fluid cooling | |
| MX2014007466A (en) | System and method to control automotive powertrain component temperature. | |
| US6789562B2 (en) | Viscosity regulating valve | |
| CN102124189A (en) | Transmission oil circuit | |
| CN106461063A (en) | Vehicular drive system | |
| CN100445603C (en) | Lubrication system for a transmission output differential mechanism | |
| DE19902408C2 (en) | Automatic transmission for vehicles with a hydrodynamic converter | |
| CN109296444A (en) | Cooling system and motor vehicle | |
| CN112689722A (en) | Oil cooling circulation loop of automatic speed change mechanism | |
| CN107631013A (en) | System and method for managing transmission fluid temperature | |
| CN109751409A (en) | Hydraulic control system with four main pressure regulators | |
| JP4527106B2 (en) | Hydraulic system for transmission with starting clutch | |
| WO2017163855A1 (en) | Hydraulic control device | |
| US7229377B2 (en) | Lubrication system for a transmission output differential mechanism | |
| JP5553614B2 (en) | Hydraulic system | |
| CN113085515A (en) | Cooling and lubricating system and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |