CN113531101A - Cooling lubricating oil flow on-demand distribution control system and method for multi-gear transmission of new energy automobile - Google Patents
Cooling lubricating oil flow on-demand distribution control system and method for multi-gear transmission of new energy automobile Download PDFInfo
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- CN113531101A CN113531101A CN202110800216.6A CN202110800216A CN113531101A CN 113531101 A CN113531101 A CN 113531101A CN 202110800216 A CN202110800216 A CN 202110800216A CN 113531101 A CN113531101 A CN 113531101A
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- 238000001816 cooling Methods 0.000 title claims abstract description 101
- 230000005540 biological transmission Effects 0.000 title claims abstract description 66
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001050 lubricating effect Effects 0.000 claims abstract description 44
- 239000003921 oil Substances 0.000 claims abstract description 41
- 238000005461 lubrication Methods 0.000 claims description 20
- 238000005299 abrasion Methods 0.000 claims description 10
- 230000020169 heat generation Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- 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
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/72—Features relating to cooling
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/74—Features relating to lubrication
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- 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
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
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- 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
- F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
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- 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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- 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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0473—Friction devices, e.g. clutches or brakes
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- 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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
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- 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
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
Abstract
The invention discloses a system and a method for controlling cooling lubricating oil flow distribution on demand of a multi-gear transmission of a new energy automobile, relates to the technical field of new energy automobiles, and can effectively reduce the performance parameter requirements of hydraulic parts such as an electronic oil pump and the like, effectively improve the whole box efficiency of the transmission and the reliability of the parts such as a clutch and the like, and select more suppliers. The invention relates to a new energy automobile multi-gear transmission cooling lubricating oil flow on-demand distribution control system, which comprises: the hydraulic system comprises a multi-position multi-way mechanical slide valve, two return springs and two switch electromagnetic valves, wherein the return springs at two ends of the multi-position multi-way mechanical slide valve and the switch electromagnetic valves are used for controlling the positions of the slide valves and controlling the flow direction and the flow rate of oil in a hydraulic system, so that the timely and proper distribution control of cooling or lubricating flow rates of clutches, gears and motors in a multi-gear transmission of a new energy automobile is realized according to needs.
Description
Technical Field
The invention relates to the technical field of new energy vehicles, in particular to a system and a method for controlling cooling lubricating oil flow distribution of a multi-gear transmission of a new energy vehicle according to needs.
Background
The current ways of controlling the flow of cooling lubricating oil of a transmission and a motor in the industry of automatic transmissions of traditional passenger cars and new energy automobiles mainly comprise the following two ways:
the first scheme is as follows: the flow distribution scheme of the fixed throttle hole is characterized in that in all vehicle driving working conditions, the proportion of the cooling and lubricating flow distribution to the first clutch, the second clutch, the motor and the bearing is constant, and the cooling and lubricating flow to the first clutch, the second clutch, the motor and the bearing cannot change along with the change of the vehicle driving working conditions, so that the timely and proper distribution control of the cooling and lubricating flow to the whole vehicle box can not be realized according to the requirement; specifically, the fixed cooling lubrication flow scheme combines the compromise of the maximum and minimum cooling lubrication liquid flow of the parts, defines a parameter of a certain flow, but is limited by hardware conditions, reduces the requirement of harsh working conditions, has surplus cooling lubrication flow of non-harsh working conditions, and has limited product reliability and lower efficiency.
Scheme II: the electromagnetic valve directly controls the cooling and lubricating flow of a transmission hydraulic system, the first switch electromagnetic valve directly controls the cooling and lubricating flow of the first clutch, the second switch electromagnetic valve directly controls the cooling and lubricating flow of the second clutch, and the electromagnetic valve directly controls the cooling and lubricating flow scheme of the transmission hydraulic system.
In conclusion, analysis shows that the cooling and lubricating flow of the automatic transmission in the current new energy automobile multi-gear automatic transmission industry is constant flow or parallel control of a single flow control valve, which brings high cost to product research and development, or has the problems that too many control units, too large enveloping volume, layout failure, too large flow demand cannot find suppliers and the like, and can not completely achieve control of certain flow distribution as required.
Disclosure of Invention
The invention aims to provide a system and a method for controlling cooling and lubricating oil flow distribution of a multi-gear transmission of a new energy automobile according to needs, which can effectively reduce the performance parameter requirements of hydraulic parts such as an electronic oil pump and the like, effectively improve the whole box efficiency of the transmission and the reliability of the parts such as a clutch and the like, and have more optional suppliers.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cooling lubricating oil flow on-demand distribution control system for a multi-gear transmission of a new energy automobile comprises: the hydraulic system comprises a multi-position multi-way mechanical slide valve, two return springs and two switch electromagnetic valves, wherein the return springs at two ends of the multi-position multi-way mechanical slide valve and the switch electromagnetic valves are used for controlling the positions of the slide valves and controlling the flow direction and the flow rate of oil in a hydraulic system, so that the timely and proper distribution control of cooling or lubricating flow rates of clutches, gears and motors in a multi-gear transmission of a new energy automobile is realized according to needs.
Specifically, the cooling lubricating oil flow on-demand distribution control system for the multi-gear transmission of the new energy automobile comprises: the multi-position multi-way mechanical slide valve is characterized by comprising a multi-position multi-way mechanical slide valve, a first return spring and a first switch electromagnetic valve are arranged at one end of the multi-position multi-way mechanical slide valve, and a second return spring and a second switch electromagnetic valve are arranged at the other end of the multi-position multi-way mechanical slide valve; the multi-position multi-way mechanical slide valve is communicated with the first clutch through the first switch electromagnetic valve, the multi-position multi-way mechanical slide valve is communicated with the second clutch through the second switch electromagnetic valve, and the multi-position multi-way mechanical slide valve is communicated with a motor for cooling and bearing lubrication.
When the whole vehicle or the whole box needs to be shifted by the first clutch, the first clutch needs to be separated or combined, the first clutch has a sliding mode working condition at the moment, heat generation and abrasion are large, the cooling and lubricating flow of a friction plate of the first clutch needs to be increased, the heat generated by the sliding mode of the first clutch is taken away by oil of a transmission, and the first clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the first switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the first switch electromagnetic valve, the second return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the first clutch is increased.
When the whole vehicle or the whole box needs to shift gears by the second clutch, the second clutch needs to be separated or combined, the second clutch has a sliding mode working condition, heat generation and abrasion are large, the cooling and lubricating flow of a friction plate of the second clutch needs to be increased, the heat generated by the sliding mode of the second clutch is taken away by oil of a transmission, and the second clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the second switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the second switch electromagnetic valve, the first return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the second clutch is increased.
The whole vehicle is in a certain gear during normal running, the first clutch and the second clutch are completely opened or closed at the moment, and the first clutch and the second clutch cannot generate excessive heat under the working condition, so that the flow of the lubricating oil does not need to be cooled too much; under the working condition, the motor generates more heat and needs large-flow cooling lubricating oil to cool or lubricate the motor, at the moment, the first switch electromagnetic valve and the second switch electromagnetic valve are closed, and the multi-position multi-way mechanical slide valve timely and appropriately controls the flow of the hydraulic cooling lubricating oil of the transmission.
A new energy automobile multi-gear transmission cooling lubricating oil flow distribution control method as required is characterized in that a first return spring and a first switch electromagnetic valve are arranged at one end of a multi-position multi-way mechanical slide valve, and a second return spring and a second switch electromagnetic valve are arranged at the other end of the multi-position multi-way mechanical slide valve; the multi-position multi-way mechanical slide valve is communicated with a first clutch through the first switch electromagnetic valve, the multi-position multi-way mechanical slide valve is communicated with a second clutch through the second switch electromagnetic valve, and the multi-position multi-way mechanical slide valve is communicated with a motor for cooling and bearing lubrication; specifically, the method comprises the following control processes:
the first clutch special working condition lubrication cooling flow control: when the whole vehicle or the whole box needs the first clutch to shift gears, the first clutch needs to be separated or combined, the first clutch has a sliding mode working condition at the moment, heat generation and abrasion are large, the cooling lubrication flow of a friction plate of the first clutch needs to be increased, the heat generated by the sliding mode of the first clutch is taken away by oil of a transmission, and the first clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the first switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the first switch electromagnetic valve, the second return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the first clutch is increased;
and the second clutch special working condition lubrication cooling flow control: when the whole vehicle or the whole box needs to shift gears by the second clutch, the second clutch needs to be separated or combined, the second clutch has a sliding mode working condition, heat generation and abrasion are large, the cooling and lubricating flow of a friction plate of the second clutch needs to be increased, so that the heat generated by the sliding mode of the second clutch is taken away by the oil of the transmission, and the second clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the second switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the second switch electromagnetic valve, the first return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the second clutch is increased;
and controlling the cooling lubrication flow of the whole box under normal working condition parts: the whole vehicle is in a certain gear when running normally, the first clutch and the second clutch are completely opened or closed at the time, and the first clutch and the second clutch do not generate excessive heat under the working condition, so that the flow of the lubricating oil does not need to be cooled too much; under the working condition, the motor generates more heat and needs large-flow cooling lubricating oil to cool or lubricate the motor, at the moment, the first switch electromagnetic valve and the second switch electromagnetic valve are closed, and the multi-position multi-way mechanical slide valve timely and appropriately controls the flow of the hydraulic cooling lubricating oil of the transmission.
Compared with the prior art, the system and the method for controlling the cooling lubricating oil flow of the multi-gear transmission of the new energy automobile according to the demand distribution have the following advantages:
the cooling and lubricating flow of the clutch, the gear shaft, the bearing and the motor can be independently controlled:
the independent control of the cooling and lubricating flows of the clutch, the gear shaft, the bearing and the motor can be realized by controlling the first switch electromagnetic valve and/or the second switch electromagnetic valve;
secondly, in due time, the cooling and lubricating flow of the transmission system is properly controlled, the energy loss is reduced, and the whole box efficiency is improved:
the cooling and lubricating flow of the transmission system can be properly controlled in time, the dragging loss of a clutch and the oil throwing loss of a gear are reduced, and the whole box efficiency is improved;
thirdly, properly controlling the cooling and lubricating flow of the transmission system in time, and improving the product performance and reliability:
the cooling and lubricating flow of the transmission system can be properly controlled in time, the cooling and lubricating flow of the clutch and the motor under special working conditions is increased, and the product performance and reliability are improved;
fourthly, the structure is compact, and the layout is convenient:
the mechanical valve core, the return spring and the switch electromagnetic valve pilot control integrated structure are adopted, and the integrated structure has the advantages of compact structure and convenience in layout;
fifthly, the requirements on the performance of parts such as the electromagnetic valve and the like are low, the model selection is convenient, and the price is low.
Drawings
Fig. 1 is a schematic structural diagram illustrating a first clutch special condition lubrication cooling flow control in a new energy vehicle multi-gear transmission cooling oil flow on-demand distribution control system and method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram illustrating cooling oil flow control of a second clutch under a special working condition in a system and method for controlling cooling oil flow distribution on demand of a multi-speed transmission of a new energy vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of control of cooling and lubricating oil flow of parts under normal operating conditions of the whole vehicle in the system and method for controlling cooling and lubricating oil flow distribution of the multi-gear transmission of the new energy vehicle according to needs, provided by the embodiment of the invention.
Reference numerals:
11-a first return spring; 12-a second return spring; 21-a first on-off solenoid valve; 22-a second on-off solenoid valve; 3-a multi-position multi-way mechanical slide valve; c1 — first clutch; c2 — second clutch.
Detailed Description
For the convenience of understanding, the system and the method for controlling cooling lubricating oil flow distribution on demand of the multi-gear transmission of the new energy automobile provided by the embodiment of the invention are described in detail below with reference to the attached drawings.
The embodiment of the invention provides a system and a method for controlling cooling lubricating oil flow distribution as required for a multi-gear transmission of a new energy automobile, and specifically the system comprises: the multi-position multi-way mechanical slide valve comprises a multi-position multi-way mechanical slide valve 3, wherein one end of the multi-position multi-way mechanical slide valve 3 is provided with a first return spring 11 and a first switch electromagnetic valve 21, and the other end of the multi-position multi-way mechanical slide valve 3 is provided with a second return spring 12 and a second switch electromagnetic valve 22; the multi-position multi-way mechanical slide valve 3 is communicated with a first clutch C1 through a first switch electromagnetic valve 21, the multi-position multi-way mechanical slide valve 3 is communicated with a second clutch C2 through a second switch electromagnetic valve 22, and the multi-position multi-way mechanical slide valve 3 is communicated with motor cooling and bearing lubrication; further, the method comprises the following control processes:
as shown in fig. 1, the first clutch C1 special condition lubrication cooling flow rate is controlled: when the whole vehicle or the whole box needs the first clutch C1 for gear shifting, the first clutch C1 needs to be separated or combined, at the moment, the first clutch C1 has a sliding film working condition, heat generation and abrasion are large, the cooling and lubricating flow of a friction plate of the first clutch C1 needs to be increased, the heat generated by the sliding film of the first clutch C1 is taken away by the oil of the transmission, and the first clutch C1 is prevented from being burnt out due to temperature sudden rise; at the moment, the first switch electromagnetic valve 21 is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve 3 to move towards the direction far away from the first switch electromagnetic valve 21, the second return spring 12 is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the first clutch C1 is increased;
as shown in fig. 2, the second clutch C2 special condition lubrication cooling flow rate is controlled: when the whole vehicle or the whole box needs the second clutch C2 for gear shifting, the second clutch C2 needs to be separated or combined, at the moment, the second clutch C2 has a sliding film working condition, heat generation and abrasion are large, the cooling and lubricating flow of a friction plate of the second clutch C2 needs to be increased, the heat generated by the sliding film of the second clutch C2 is taken away by the oil of the transmission, and the second clutch C2 is prevented from being burnt out due to temperature sudden rise; at the moment, the second switch electromagnetic valve 22 is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve 3 to move towards the direction far away from the second switch electromagnetic valve 22, the first return spring 11 is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the second clutch C2 is increased;
as shown in fig. 3, the cooling lubrication flow of the whole box of parts under normal working conditions is controlled: when the whole vehicle runs normally, the whole vehicle is in a certain gear, the first clutch C1 and the second clutch C2 are completely opened or closed, and the first clutch C1 and the second clutch C2 do not generate excessive heat under the working condition, so that the flow of the lubricating oil does not need to be cooled too much; under the working condition, the motor generates more heat and needs large-flow cooling lubricating oil to cool or lubricate the motor, at the moment, the first switch electromagnetic valve 21 and the second switch electromagnetic valve 22 are closed, and the multi-position multi-way mechanical slide valve 3 timely and properly controls the flow of the hydraulic cooling lubricating oil of the transmission.
Compared with the prior art, the system and the method for controlling cooling and lubricating oil flow distribution as required for the multi-gear transmission of the new energy automobile have the following advantages that:
the cooling and lubricating flow of the clutch, the gear shaft, the bearing and the motor can be independently controlled:
the independent control of the cooling and lubricating flows of the clutch, the gear shaft, the bearing and the motor can be realized by controlling the first switch electromagnetic valve and/or the second switch electromagnetic valve;
secondly, in due time, the cooling and lubricating flow of the transmission system is properly controlled, the energy loss is reduced, and the whole box efficiency is improved:
the cooling and lubricating flow of the transmission system can be properly controlled in time, the dragging loss of a clutch and the oil throwing loss of a gear are reduced, and the whole box efficiency is improved;
thirdly, properly controlling the cooling and lubricating flow of the transmission system in time, and improving the product performance and reliability:
the cooling and lubricating flow of the transmission system can be properly controlled in time, the cooling and lubricating flow of the clutch and the motor under special working conditions is increased, and the product performance and reliability are improved;
fourthly, the structure is compact, and the layout is convenient:
the mechanical valve core, the return spring and the switch electromagnetic valve pilot control integrated structure are adopted, and the integrated structure has the advantages of compact structure and convenience in layout;
fifthly, the requirements on the performance of parts such as the electromagnetic valve and the like are low, the model selection is convenient, and the price is low.
In summary, in the system and the method for controlling cooling and lubricating oil flow distribution on demand for a multi-gear transmission of a new energy automobile provided by the embodiment of the invention, the mechanical valve core is the main valve core, and the switching electromagnetic valve is pilot-controlled, so that the requirements on performance parameters such as flow are low, meanwhile, the cooling and lubricating flow of the clutch and the motor can be improved under special working conditions, the performance requirements of the system on the oil pump are effectively reduced, and the parts are convenient to select and low in price.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. The utility model provides a new energy automobile multispeed derailleur cooling lubricating oil flow is distribution control system as required which characterized in that includes: the hydraulic system comprises a multi-position multi-way mechanical slide valve, two return springs and two switch electromagnetic valves, wherein the return springs at two ends of the multi-position multi-way mechanical slide valve and the switch electromagnetic valves are used for controlling the positions of the slide valves and controlling the flow direction and the flow rate of oil in a hydraulic system, so that the timely and proper distribution control of cooling or lubricating flow rates of clutches, gears and motors in a multi-gear transmission of a new energy automobile is realized according to needs.
2. The system for controlling cooling lubricating oil flow distribution on demand of the multi-gear transmission of the new energy automobile according to claim 1, is characterized by comprising: the multi-position multi-way mechanical slide valve is characterized by comprising a multi-position multi-way mechanical slide valve, a first return spring and a first switch electromagnetic valve are arranged at one end of the multi-position multi-way mechanical slide valve, and a second return spring and a second switch electromagnetic valve are arranged at the other end of the multi-position multi-way mechanical slide valve; the multi-position multi-way mechanical slide valve is communicated with the first clutch through the first switch electromagnetic valve, the multi-position multi-way mechanical slide valve is communicated with the second clutch through the second switch electromagnetic valve, and the multi-position multi-way mechanical slide valve is communicated with a motor for cooling and bearing lubrication.
3. The cooling lubricating oil flow on-demand distribution control system of the multi-gear transmission of the new energy automobile according to claim 2, wherein when the first clutch is required to be separated or combined when a whole automobile or a whole box is required to be shifted, a sliding mode working condition exists in the first clutch, heat generation and abrasion are large, the cooling lubricating flow of a friction plate of the first clutch needs to be increased, heat generated by the sliding mode of the first clutch is taken away by oil of the transmission, and the first clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the first switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the first switch electromagnetic valve, the second return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the first clutch is increased.
4. The cooling lubricating oil flow on-demand distribution control system of the new energy automobile multi-gear transmission is characterized in that when the whole automobile or the whole box needs to be shifted, the second clutch needs to be separated or combined, at the moment, a sliding mode working condition exists in the second clutch, heat generation and abrasion are large, the cooling lubricating flow of a second clutch friction plate needs to be increased, so that the oil of the transmission can take away heat generated by the sliding mode of the second clutch, and the second clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the second switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the second switch electromagnetic valve, the first return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the second clutch is increased.
5. The cooling lubricating oil flow on-demand distribution control system for the multi-gear transmission of the new energy automobile according to claim 2, wherein the whole automobile is in a certain gear during normal running, the first clutch and the second clutch are completely opened or completely closed at the time, and the first clutch and the second clutch do not generate excessive heat under the working condition, so that excessive cooling lubricating oil flow is not needed; under the working condition, the motor generates more heat and needs large-flow cooling lubricating oil to cool or lubricate the motor, at the moment, the first switch electromagnetic valve and the second switch electromagnetic valve are closed, and the multi-position multi-way mechanical slide valve timely and appropriately controls the flow of the hydraulic cooling lubricating oil of the transmission.
6. A new energy automobile multi-gear transmission cooling lubricating oil flow distribution control method as required is characterized in that one end of a multi-position multi-way mechanical slide valve is provided with a first return spring and a first switch electromagnetic valve, and the other end of the multi-position multi-way mechanical slide valve is provided with a second return spring and a second switch electromagnetic valve; the multi-position multi-way mechanical slide valve is communicated with a first clutch through the first switch electromagnetic valve, the multi-position multi-way mechanical slide valve is communicated with a second clutch through the second switch electromagnetic valve, and the multi-position multi-way mechanical slide valve is communicated with a motor for cooling and bearing lubrication; specifically, the method comprises the following control processes:
the first clutch special working condition lubrication cooling flow control: when the whole vehicle or the whole box needs the first clutch to shift gears, the first clutch needs to be separated or combined, the first clutch has a sliding mode working condition at the moment, heat generation and abrasion are large, the cooling lubrication flow of a friction plate of the first clutch needs to be increased, the heat generated by the sliding mode of the first clutch is taken away by oil of a transmission, and the first clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the first switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the first switch electromagnetic valve, the second return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the first clutch is increased;
and the second clutch special working condition lubrication cooling flow control: when the whole vehicle or the whole box needs to shift gears by the second clutch, the second clutch needs to be separated or combined, the second clutch has a sliding mode working condition, heat generation and abrasion are large, the cooling and lubricating flow of a friction plate of the second clutch needs to be increased, so that the heat generated by the sliding mode of the second clutch is taken away by the oil of the transmission, and the second clutch is prevented from being burnt out due to temperature sudden rise; at the moment, the second switch electromagnetic valve is opened, the transmission pressure oil pushes the multi-position multi-way mechanical slide valve to move towards the direction far away from the second switch electromagnetic valve, the first return spring is compressed to realize the slide valve oil way switching valve, and the cooling and lubricating flow of the second clutch is increased;
and controlling the cooling lubrication flow of the whole box under normal working condition parts: the whole vehicle is in a certain gear when running normally, the first clutch and the second clutch are completely opened or closed at the time, and the first clutch and the second clutch do not generate excessive heat under the working condition, so that the flow of the lubricating oil does not need to be cooled too much; under the working condition, the motor generates more heat and needs large-flow cooling lubricating oil to cool or lubricate the motor, at the moment, the first switch electromagnetic valve and the second switch electromagnetic valve are closed, and the multi-position multi-way mechanical slide valve timely and appropriately controls the flow of the hydraulic cooling lubricating oil of the transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800216.6A CN113531101A (en) | 2021-07-15 | 2021-07-15 | Cooling lubricating oil flow on-demand distribution control system and method for multi-gear transmission of new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800216.6A CN113531101A (en) | 2021-07-15 | 2021-07-15 | Cooling lubricating oil flow on-demand distribution control system and method for multi-gear transmission of new energy automobile |
Publications (1)
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| CN114060500A (en) * | 2021-12-03 | 2022-02-18 | 安徽江淮汽车集团股份有限公司 | Automatic lubricating oil regulation and control system and method for DCT (dual clutch transmission) |
| CN115045879A (en) * | 2022-06-06 | 2022-09-13 | 中国第一汽车股份有限公司 | Flow distribution control method and device for hydraulic oil pump, storage medium and processor |
| CN116717510A (en) * | 2023-08-10 | 2023-09-08 | 盛瑞传动股份有限公司 | Mixed hydraulic system oil circuit and automatic gearbox |
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| CN116717510A (en) * | 2023-08-10 | 2023-09-08 | 盛瑞传动股份有限公司 | Mixed hydraulic system oil circuit and automatic gearbox |
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