CN111692325A - Vehicle, power assembly thereof, gearbox lubricating system and lubricating method - Google Patents
Vehicle, power assembly thereof, gearbox lubricating system and lubricating method Download PDFInfo
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- CN111692325A CN111692325A CN202010622854.9A CN202010622854A CN111692325A CN 111692325 A CN111692325 A CN 111692325A CN 202010622854 A CN202010622854 A CN 202010622854A CN 111692325 A CN111692325 A CN 111692325A
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- oil
- gearbox
- detection module
- lubricating
- oil tank
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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
- F16H57/045—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
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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
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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
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0441—Arrangements of pumps
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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
- F16H57/0447—Control of lubricant levels, e.g. lubricant level control dependent on temperature
- F16H57/0449—Sensors or indicators for controlling the fluid level
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to a vehicle and a power assembly thereof, a gearbox lubricating system and a lubricating method, wherein the gearbox lubricating system comprises a gearbox, an oil tank, a first oil circulating device, a second oil circulating device and an electric control system, the gearbox, the first oil circulating device, the oil tank and the second oil circulating device are sequentially connected in series to form a lubricating oil loop, and the electric control system comprises a falling edge detection module, an environment temperature detection module, an engine rotating speed detection module, a lubricating oil liquid level detection module, a clutch pedal state detection module and a control module; the control module is used for respectively controlling the opening or closing of the first oil circulating device and the second oil circulating device according to the detection signals of the modules, and the lubricating oil quantity in the gearbox in the cold starting process of the engine can be reduced through the gearbox lubricating system, so that the friction resistance between the gearbox gear and the lubricating oil is reduced, and the cold starting capability is favorably improved.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a vehicle, a power assembly of the vehicle, a gearbox lubricating system and a lubricating method.
Background
After the vehicle stood for a period of time under low temperature environment, gearbox lubricating oil became thick along with the temperature reduction, started engine this moment, gear and lubricating oil frictional resistance were great in the gearbox, and under the certain condition of starting torque, starting resistance moment in the starting process increased, can lead to engine rotating part rotational acceleration to reduce, the starting process rotational speed rises slowly, the condition that can't start even appears.
Disclosure of Invention
A first object of the present invention is to provide a gearbox lubrication system to reduce frictional resistance between the gearbox gear and the lubricating oil during cold start of the engine and improve the cold start capability of the engine.
The second purpose of the invention is to provide a gearbox lubricating method, a power assembly and a vehicle based on the gearbox lubricating system.
In order to achieve the purpose, the invention provides the following technical scheme:
a gearbox lubricating system comprises a gearbox, an oil tank, a first oil circulating device, a second oil circulating device and an electric control system, wherein the gearbox is sequentially connected with the first oil circulating device, the oil tank and the second oil circulating device in series to form a lubricating oil loop, and the electric control system comprises a falling edge detection module, an environment temperature detection module, an engine rotating speed detection module, a lubricating oil liquid level detection module, a clutch pedal state detection module and a control module;
the control module is used for respectively controlling the first oil circulating device and the second oil circulating device to be opened or closed according to detection signals of the falling edge detection module, the environment temperature detection module, the engine rotating speed detection module, the lubricating oil liquid level detection module and the clutch pedal state detection module.
Preferably, the oil tank integration set up in the top of gearbox, first oil circulating device is the oil pump, the oil feed end of oil pump through defeated oil pipe way connect in the bottom of gearbox, the end of producing oil of oil pump through defeated oil pipe way connect in the oil tank, second oil circulating device be for set up in the ooff valve at the top of gearbox, the bottom export of oil tank with the top import of gearbox passes through the ooff valve is connected.
Preferably, the oil tank integration set up in the bottom of gearbox, first oil circle device for set up in the ooff valve of the bottom of gearbox, the bottom export of gearbox with the top import of oil tank passes through the ooff valve is connected, second oil circle device is the oil pump, the oil feed end of oil pump through defeated oil pipe way connect in the bottom of oil tank, the end of producing oil of oil pump through defeated oil pipe way connect in the gearbox.
Preferably, the first oil circulating device and the second oil circulating device are both oil pumps.
Preferably, the lubricant level detection module is configured to detect a lubricant level of one of the oil tank and the transmission.
A power assembly comprises an engine, a clutch and the gearbox lubricating system, wherein the output end of the engine is in transmission connection with the input end of a gearbox in the gearbox lubricating system through the clutch.
A vehicle comprising a powertrain as in the previous paragraph.
A method of lubricating a gearbox based on a gearbox lubrication system as described in any one of the preceding claims, comprising the steps of:
detecting the environmental temperature in real time, and on the premise that the environmental temperature does not exceed an environmental temperature threshold, if the falling edge detection module detects a falling edge signal and the lubricating oil level detection module detects that the lubricating oil level in the oil tank does not exceed a first oil tank level threshold or the lubricating oil level in the gearbox is not lower than a first gearbox level threshold, the control module controls the first oil circulation device to start to convey the lubricating oil in the gearbox into the oil tank, and controls the first oil circulation device to be closed when the lubricating oil level detection module detects that the lubricating oil level in the oil tank is not lower than a second oil tank level threshold or the lubricating oil level in the gearbox is not higher than a second gearbox level threshold;
when the engine speed detection module detects that the engine speed is not lower than the engine speed threshold, the clutch pedal state detection module detects that the clutch pedal is not stepped, and the lubricating oil liquid level detection module detects that the lubricating oil liquid level in the oil tank is not lower than the second oil tank liquid level threshold or the lubricating oil liquid level in the gearbox is not higher than the second gearbox liquid level threshold, the control module controls the second oil circulation device to start to return the lubricating oil in the oil tank to the gearbox, and controls the second oil circulation device to be closed when the lubricating oil liquid level detection module detects that the lubricating oil liquid level in the oil tank is not higher than the first oil tank liquid level threshold or the lubricating oil liquid level in the gearbox is not lower.
According to the technical scheme, the invention discloses a gearbox lubricating system which comprises a gearbox, an oil tank, a first oil circulating device, a second oil circulating device and an electric control system, wherein the gearbox, the first oil circulating device, the oil tank and the second oil circulating device are sequentially connected in series to form a lubricating oil loop, and the electric control system comprises a falling edge detection module, an environment temperature detection module, an engine rotating speed detection module, a lubricating oil liquid level detection module, a clutch pedal state detection module and a control module; the control module is used for respectively controlling the first oil circulating device and the second oil circulating device to be turned on or turned off according to detection signals of the falling edge detection module, the environment temperature detection module, the engine rotating speed detection module, the lubricating oil liquid level detection module and the clutch pedal state detection module, namely when the engine is flamed out in a low-temperature environment, when the falling edge detection module detects a falling edge signal and the lubricating oil liquid level in the gearbox is higher than a preset value or the lubricating oil liquid level in the oil tank is lower than the preset value, the control module controls the first oil circulating device to suck out lubricating oil of the gearbox, so that the lubricating oil liquid level in the gearbox is kept in a lower state; when the engine is started successfully, and the clutch pressure plate is engaged, namely the engine speed reaches a preset value, the clutch pedal is not stepped on, and the lubricating oil liquid level in the oil tank is higher than the preset value or the lubricating oil liquid level in the transmission is lower than the preset value, the second oil circulating device is controlled to return the lubricating oil from the oil tank to the transmission; through above-mentioned gearbox lubricating system, can reduce the lubricated oil mass in the gearbox among the engine cold start-up process to reduce the frictional resistance between gearbox gear and the lubricating oil, be favorable to improving cold start-up ability.
The invention also provides a gearbox lubricating method, a power assembly and a vehicle based on the gearbox lubricating system, and the gearbox lubricating method, the power assembly and the vehicle all adopt the gearbox lubricating system, so that the gearbox lubricating method, the power assembly and the vehicle have the beneficial effects of the gearbox lubricating system, and are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a lubrication system of a transmission provided in an embodiment of the present invention.
Wherein:
1 is a gear box; 2 is an oil tank; 3 is a switch valve; 4 is an oil pump; 5 is an engine; and 6 is a clutch.
Detailed Description
The invention provides a gearbox lubricating system, which aims to reduce the friction resistance between a gearbox gear and lubricating oil in the cold starting process of an engine and improve the cold starting capability of the engine.
The invention further provides a lubricating method, a power assembly and a vehicle based on the gearbox lubricating system.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a lubrication system of a transmission according to an embodiment of the present invention.
The embodiment of the invention discloses a gearbox lubricating system which comprises a gearbox 1, an oil tank 2, a first oil circulating device, a second oil circulating device and an electric control system.
Wherein the gearbox 1, the first oil circulating device, the oil tank 2 and the second oil circulating device are sequentially connected in series to form a lubricating oil loop, the electric control system comprises a falling edge detection module and an ambient temperature detection module, the system comprises an engine rotating speed detection module, a lubricating oil liquid level detection module, a clutch pedal state detection module and a control module, wherein the falling edge detection module is used for detecting the falling edge of the instant when a digital level signal is changed from a high level signal to a low level signal when the whole vehicle is powered off, the environment temperature detection module is used for detecting the external environment temperature, the engine rotating speed detection module is used for detecting whether the rotating speed of an engine 5 reaches a preset rotating speed so as to judge whether the engine 5 is started successfully, the lubricating oil liquid level detection module is used for detecting the lubricating oil liquid level in an oil tank 2 or a gearbox 1, and the clutch pedal state detection module is used for detecting whether a clutch pedal; the control module is used for respectively controlling the first oil circulating device and the second oil circulating device to be opened or closed according to detection signals of the falling edge detection module, the environment temperature detection module, the engine rotating speed detection module, the lubricating oil liquid level detection module and the clutch pedal state detection module.
Compared with the prior art, when the gearbox lubricating system provided by the embodiment of the invention is applied and the engine 5 is flamed out in a low-temperature environment, when the falling edge detection module detects a falling edge signal and the lubricating oil liquid level in the gearbox 1 is higher than a preset value or the lubricating oil liquid level in the oil tank 2 is lower than the preset value, the control module controls the first oil circulating device to suck out the lubricating oil of the gearbox, so that the lubricating oil liquid level in the gearbox 1 is kept in a lower state; when the engine 5 is started successfully and the pressure plate of the clutch 6 is engaged, namely the rotating speed of the engine 5 reaches a preset value and the clutch pedal is not stepped, and the lubricating oil liquid level in the oil tank 2 is higher than the preset value or the lubricating oil liquid level in the gearbox 1 is lower than the preset value, the second oil circulating device is controlled to return the lubricating oil from the oil tank 2 to the gearbox 1; through above-mentioned gearbox lubricating system, can reduce the lubricated oil mass in gearbox 1 in the cold start-up process of engine 5 to reduce the frictional resistance between 1 gear of gearbox and the lubricating oil, be favorable to improving cold start ability.
In an embodiment of the present invention, as shown in fig. 1, the oil tank 2 is integrally disposed at the top of the transmission case 1, the first oil circulating device is an oil pump 4, an oil inlet end of the oil pump 4 is connected to the bottom of the transmission case 1 through an oil pipeline, an oil outlet end of the oil pump 4 is connected to the oil tank 2 through an oil pipeline, the second oil circulating device is a switch valve 3 disposed at the top of the transmission case 1, a bottom outlet of the oil tank 2 is connected to a top inlet of the transmission case 1 through the switch valve 3, when the switch valve 3 is opened, the oil tank 2 is directly communicated with the transmission case 1 through the switch valve 3, the lubricating oil in the oil tank 2 automatically flows back into the transmission case 1 under the action of gravity, and when the switch valve 3 is closed, the oil tank 2 and the transmission case 1 are isolated from each other.
It should be noted that, in the above embodiment, the oil tank 2 is integrally disposed on the top of the transmission case 1, and is not limited to be disposed right above the transmission case 1, and the oil tank 2 may be disposed obliquely above the transmission case 1 as long as the lubricating oil in the oil tank 2 flows into the transmission case 1 under the action of gravity.
In another embodiment of the present invention, the oil tank 2 is integrally disposed at the bottom of the transmission case 1, the first oil circulation device is a switch valve 3 disposed at the bottom of the transmission case 1, the bottom outlet of the transmission case 1 is connected to the top inlet of the oil tank 2 through the switch valve 3, the second oil circulation device is an oil pump 4, the oil inlet end of the oil pump 4 is connected to the bottom of the oil tank 2 through an oil pipeline, and the oil outlet end of the oil pump 4 is connected to the transmission case 1 through an oil pipeline.
Similarly to the previous embodiment, the oil tank 2 is integrally provided at the bottom of the transmission case 1 and is not limited to being directly below the transmission case 1, and the oil tank 2 may be provided obliquely below the transmission case 1.
In both embodiments, the oil tank 2 is integrated in the transmission case 1, and in other embodiments, the oil tank 2 may be independent of the transmission case 1, that is, the relative position of the oil tank 2 and the transmission case 1 may be arbitrarily adjusted, in which case, because the position of the oil tank 2 is not fixed, the first oil circulation device and the second oil circulation device are both the oil pump 4.
The embodiment of the invention also provides a power assembly, which comprises an engine 5, a clutch 6 and the gearbox lubrication system as described in the above embodiment, wherein the output end of the engine 5 of the power assembly is in transmission connection with the input end of the gearbox 1 in the gearbox lubrication system through the clutch 6.
Further, the embodiment of the invention also provides a vehicle, and the vehicle comprises the power assembly.
Because the power assembly and the vehicle both employ a transmission lubrication system, please refer to the above embodiments for technical effects of the power assembly and the vehicle.
Based on the gearbox lubricating system in the embodiment, the embodiment of the invention also provides a gearbox lubricating method, and the gearbox lubricating method comprises the following steps:
detecting the environmental temperature in real time, and on the premise that the environmental temperature does not exceed the environmental temperature threshold, if the falling edge detection module detects a falling edge signal and the lubricating oil level detection module detects that the lubricating oil level in the oil tank 2 does not exceed the liquid level threshold of the first oil tank 2 or the lubricating oil level in the gearbox 1 is not lower than the liquid level threshold of the first gearbox 1, the control module controls the first oil circulation device to start to convey the lubricating oil in the gearbox 1 to the oil tank 2, and controls the first oil circulation device to be closed when the lubricating oil level detection module detects that the lubricating oil level in the oil tank 2 is not lower than the liquid level threshold of the second oil tank 2 or the lubricating oil level in the gearbox 1 does not exceed the liquid;
when the engine speed detection module detects that the rotating speed of the engine 5 is not lower than the rotating speed threshold of the engine 5, the clutch pedal state detection module detects that the clutch pedal is not stepped on, and the lubricating oil liquid level detection module detects that the lubricating oil liquid level in the oil tank 2 is not lower than the liquid level threshold of the second oil tank 2 or the lubricating oil liquid level in the gearbox 1 is not higher than the liquid level threshold of the second gearbox 1, the control module controls the second oil circulation device to start to flow lubricating oil in the oil tank 2 back to the gearbox 1, and controls the second oil circulation device to be closed when the lubricating oil liquid level detection module detects that the lubricating oil liquid level in the oil tank 2 is not higher than the liquid level threshold of the first oil tank 2 or.
The liquid level threshold of the first oil tank 2 is not more than the liquid level threshold of the second oil tank 2, and the liquid level threshold of the first gearbox 1 is not less than the liquid level threshold of the second gearbox 1.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A gearbox lubricating system is characterized by comprising a gearbox, an oil tank, a first oil circulating device, a second oil circulating device and an electric control system, wherein the gearbox, the first oil circulating device, the oil tank and the second oil circulating device are sequentially connected in series to form a lubricating oil loop, and the electric control system comprises a falling edge detection module, an environment temperature detection module, an engine rotating speed detection module, a lubricating oil liquid level detection module, a clutch pedal state detection module and a control module;
the control module is used for respectively controlling the first oil circulating device and the second oil circulating device to be opened or closed according to detection signals of the falling edge detection module, the environment temperature detection module, the engine rotating speed detection module, the lubricating oil liquid level detection module and the clutch pedal state detection module.
2. The gearbox lubrication system according to claim 1, wherein the oil tank is integrally arranged at the top of the gearbox, the first oil circulation device is an oil pump, an oil inlet end of the oil pump is connected to the bottom of the gearbox through an oil pipeline, an oil outlet end of the oil pump is connected to the oil tank through an oil pipeline, the second oil circulation device is a switch valve arranged at the top of the gearbox, and a bottom outlet of the oil tank is connected with a top inlet of the gearbox through the switch valve.
3. The gearbox lubrication system according to claim 1, wherein the oil tank is integrally arranged at the bottom of the gearbox, the first oil circulation device is a switch valve arranged at the bottom of the gearbox, a bottom outlet of the gearbox is connected with a top inlet of the oil tank through the switch valve, the second oil circulation device is an oil pump, an oil inlet end of the oil pump is connected to the bottom of the oil tank through an oil conveying pipeline, and an oil outlet end of the oil pump is connected to the gearbox through an oil conveying pipeline.
4. The transmission lubrication system of claim 1, wherein the first oil circulation device and the second oil circulation device are both oil pumps.
5. The gearbox lubrication system according to any one of claims 1-4, wherein said lubricant level detection module is adapted to detect a lubricant level in one of said oil reservoir and said gearbox.
6. A power assembly comprising an engine, a clutch and a gearbox lubrication system according to any one of claims 1-5, wherein the output of the engine is drivingly connected to the input of a gearbox in the gearbox lubrication system via the clutch.
7. A vehicle comprising a powertrain as claimed in claim 6.
8. A gearbox lubrication method based on a gearbox lubrication system according to any of the claims 1-5, characterised in that it comprises the steps of:
detecting the environmental temperature in real time, and on the premise that the environmental temperature does not exceed an environmental temperature threshold, if the falling edge detection module detects a falling edge signal and the lubricating oil level detection module detects that the lubricating oil level in the oil tank does not exceed a first oil tank level threshold or the lubricating oil level in the gearbox is not lower than a first gearbox level threshold, the control module controls the first oil circulation device to start to convey the lubricating oil in the gearbox into the oil tank, and controls the first oil circulation device to be closed when the lubricating oil level detection module detects that the lubricating oil level in the oil tank is not lower than a second oil tank level threshold or the lubricating oil level in the gearbox is not higher than a second gearbox level threshold;
when the engine speed detection module detects that the engine speed is not lower than the engine speed threshold, the clutch pedal state detection module detects that the clutch pedal is not stepped, and the lubricating oil liquid level detection module detects that the lubricating oil liquid level in the oil tank is not lower than the second oil tank liquid level threshold or the lubricating oil liquid level in the gearbox is not higher than the second gearbox liquid level threshold, the control module controls the second oil circulation device to start to return the lubricating oil in the oil tank to the gearbox, and controls the second oil circulation device to be closed when the lubricating oil liquid level detection module detects that the lubricating oil liquid level in the oil tank is not higher than the first oil tank liquid level threshold or the lubricating oil liquid level in the gearbox is not lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622854.9A CN111692325A (en) | 2020-06-30 | 2020-06-30 | Vehicle, power assembly thereof, gearbox lubricating system and lubricating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622854.9A CN111692325A (en) | 2020-06-30 | 2020-06-30 | Vehicle, power assembly thereof, gearbox lubricating system and lubricating method |
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| CN111692325A true CN111692325A (en) | 2020-09-22 |
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| CN202010622854.9A Pending CN111692325A (en) | 2020-06-30 | 2020-06-30 | Vehicle, power assembly thereof, gearbox lubricating system and lubricating method |
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| CN114215904A (en) * | 2021-11-25 | 2022-03-22 | 三一重能股份有限公司 | Method, device, system, mechanical device and working machine for cooling lubricating oil |
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|---|---|---|---|---|
| CN114215904A (en) * | 2021-11-25 | 2022-03-22 | 三一重能股份有限公司 | Method, device, system, mechanical device and working machine for cooling lubricating oil |
| CN114215904B (en) * | 2021-11-25 | 2024-04-16 | 三一重能股份有限公司 | Lubricating oil cooling method, lubricating oil cooling device, lubricating oil cooling system, lubricating oil cooling mechanical device and lubricating oil cooling working machine |
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Application publication date: 20200922 |