CN110985372A - Oil pump and application thereof in engine lubricating system - Google Patents
Oil pump and application thereof in engine lubricating system Download PDFInfo
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- CN110985372A CN110985372A CN201911352850.7A CN201911352850A CN110985372A CN 110985372 A CN110985372 A CN 110985372A CN 201911352850 A CN201911352850 A CN 201911352850A CN 110985372 A CN110985372 A CN 110985372A
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- oil pump
- fluid
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- oil
- engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
- F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F01C1/3441—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01C13/04—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby for driving pumps or compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
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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
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
- F01M2001/0238—Rotary pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0253—Pressure lubrication using lubricating pumps characterised by the pump driving means
- F01M2001/0269—Pressure lubrication using lubricating pumps characterised by the pump driving means driven by the crankshaft
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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
- F16N2210/00—Applications
- F16N2210/04—Vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention is suitable for the technical field of pre-lubrication of automobile engines, and provides an oil pump, which comprises: the oil pump main body mechanism moves in a gear matching mode and is used for introducing and pumping the engine oil out in a pressurizing mode; the transmission mechanism is connected and transmitted at one end of the oil pump main body mechanism and is used for moving in a fluid driving mode and driving the oil pump main body mechanism to move synchronously; and the driving mechanism is connected and arranged at the fluid input end of the transmission mechanism and used for controlling the fluid to drive the transmission mechanism and the oil pump main body mechanism to move so as to realize the pre-lubrication of the oil pump main body mechanism before the oil pump main body mechanism runs. In the invention, when the engine does not run, the driving mechanism is started, the driving mechanism controls the fluid to enter the transmission mechanism, and the transmission mechanism is driven to run by the high-pressure fluid, so that the pre-lubrication is rapidly and energy-saving completed in a fluid driving mode before the engine does not run, the service life of each part structure in the engine is prolonged, and the fluid driving mode can realize multiple driving at any time.
Description
Technical Field
The invention belongs to the technical field of pre-lubrication of automobile engines, and particularly relates to an oil pump and application thereof in an engine lubrication system.
Background
According to statistics, about 30% of energy in the world is consumed by various types of friction, the engine is the same, the internal abrasion loss power of the engines in different technical states accounts for 20% -25% of the indicated power, and the abrasion loss power of the engines in serious conditions can even reach about 35%. The wear of the vehicle engine is mainly manifested in the starting moment, particularly in cold and hot starts. Common tests by the society of automotive engineers and the dow gras company have shown that the wear of an engine at cold start accounts for between 60% and 80% of the total wear. Therefore, in order to avoid the boundary friction and dry friction state that may be caused by insufficient supply of lubricating oil to each friction pair of the engine at the time of starting (about ten seconds), and to prolong the service life of the engine, it is necessary to add a pre-lubrication device.
The existing pre-lubrication devices mainly have the following forms:
the starter driving type lubricating device is characterized in that an oil pump is additionally arranged at one end of a commutator of an engine starter armature shaft, and a control circuit is additionally arranged. Before starting, the starter drives the additional engine oil pump to work, and the engine oil in the oil pan is pressed into the main oil duct to provide lubricating oil for the friction pairs of various moving parts.
The structure and the principle of the pre-lubricating device are different from those of a starter driving device, and the pre-lubricating device mainly differs from a starter driving device in that a power source is changed into a direct current motor, and a control circuit is also greatly different.
The pre-lubricating device is of an energy storage type, an additional oil pump and an additional motor are not needed, only an electric control type pressure engine oil accumulator is needed to be arranged on a main oil duct of the engine, oil is stored when the engine normally runs, and pressure engine oil is released from the accumulator into the main oil duct when the engine is started next time, so that lubricating engine oil is provided for each friction pair.
The starter driving type and the independent motor driving type have the defects that an oil pump, a power source, a lubricating oil path and the like are required to be additionally arranged, the device is complex in structure and high in manufacturing cost, the direct current motor can greatly depend on the electric power of a storage battery during working, and pre-lubrication cannot be well completed when the electric power of the storage battery is insufficient in winter.
The energy storage type has the disadvantages that a large oil reservoir is required, the occupied space is large, the oil storage amount is limited, and when the engine is not successfully started for the first time, the energy reservoir cannot perform the engine starting pre-lubrication for the second time due to the absence of the oil storage process.
Disclosure of Invention
The embodiment of the invention aims to provide an oil pump, and aims to solve the problems that pre-lubrication depends on electric power and secondary starting cannot be carried out in the prior art and cannot be simultaneously solved.
The embodiment of the present invention is realized as such, and an oil pump includes:
the oil pump main body mechanism moves in a gear matching mode and is used for introducing and pumping the engine oil out in a pressurizing mode;
the transmission mechanism is connected and transmitted at one end of the oil pump main body mechanism and is used for moving in a fluid driving mode and driving the oil pump main body mechanism to move synchronously;
and the driving mechanism is connected and arranged at the fluid input end of the transmission mechanism and used for controlling the fluid to drive the transmission mechanism and the oil pump main body mechanism to move so as to realize the pre-lubrication of the oil pump main body mechanism before the oil pump main body mechanism runs.
In a further aspect, the drive mechanism comprises:
the fluid generating structure is used for generating and outputting high-pressure fluid;
and the fluid transmission structure is communicated with the output end of the fluid generation structure and the fluid input end of the transmission mechanism, is used for transmitting the fluid and is used for limiting the passage of the fluid in a timing mode.
In a further aspect, the transmission mechanism includes:
the fluid input end of the accommodating structure is communicated with the fluid transmission structure, is used for arranging the rotating structure and drives the rotating structure to move through high-pressure fluid input;
and the rotating structure is rotatably arranged in the accommodating structure and is arranged opposite to the fluid input end of the accommodating structure and used for driving the oil pump main body mechanism to synchronously move.
Further technical solution, the rotation structure includes:
the eccentric assembly is eccentrically and rotatably arranged in the accommodating structure and is coaxially linked with the oil pump main body mechanism;
the blade assembly is elastically arranged on the periphery of the eccentric assembly and is movably abutted against the inner cavity of the containing structure, and the blade assembly is used for matching with high-pressure fluid entering from the fluid input end of the containing structure, driving the eccentric assembly to rotate under the impact of the fluid and guiding out the fluid.
According to a further technical scheme, a plurality of groups of fluid output ends are arranged on the containing structure and are far away from one side of the fluid input end in the rotating direction of the eccentric assembly.
Further technical scheme, oil pump main part mechanism includes:
the pump body structure is connected to one side of the accommodating structure and is used for accommodating the output structure and allowing engine oil to pass through;
and the output structure is rotationally connected in the pump body structure and is connected with the eccentric assembly for transmission, and is used for introducing engine oil and pumping out the engine oil under pressure.
In a further technical solution, the output structure includes:
the pre-lubrication output assembly is rotationally connected in the pump body structure, is connected with the eccentric assembly for transmission and is used for introducing and pumping out engine oil in a pre-starting stage;
and the conventional output assembly is rotatably connected in the pump body structure and is used for performing conventional oil inlet and outlet after the engine runs.
According to a further technical scheme, a limiting structure for limiting the movement direction of the pre-lubrication output assembly is connected and arranged between the pre-lubrication output assembly and the pump body structure.
Another object of an embodiment of the present invention is to provide an application of the oil pump in an engine lubrication system.
According to the oil pump provided by the embodiment of the invention, when the engine does not run, the driving mechanism is started, the driving mechanism controls fluid to enter the transmission mechanism, the transmission mechanism is driven to run by high-pressure fluid, and then pre-lubrication is rapidly and energy-saving completed in a fluid driving mode before the engine does not run, so that the service life of each part structure in the engine is prolonged, and the fluid driving mode can realize multiple driving at any time.
Drawings
FIG. 1 is a schematic diagram of an oil pump according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of section A-A in FIG. 1;
FIG. 3 is a schematic structural view of section B-B in FIG. 1;
FIG. 4 is a schematic structural view of section C-C of FIG. 1;
FIG. 5 is a schematic structural view of the cross-section D-D in FIG. 1;
FIG. 6 is an enlarged view of region I in FIG. 1;
FIG. 7 is an enlarged view of area II of FIG. 1;
fig. 8 is a schematic structural diagram of a driving mechanism in an oil pump according to an embodiment of the present invention.
In the drawings: 1. a pinion shaft; 2. a first driven gear; 3. a transmission gear; 4. a main gear shaft; 5. a nut; 6. a first semicircular key; 7. an oil pump housing; 8. a first bolt; 9. a separator; 10. a second driven gear; 11. a motor housing; 12. a motor rotor; 13. a star wheel; 14. a second woodruff key; 15. a third woodruff key; 16. an engine oil pump cover; 17. a second bolt; 18. a third bolt; 19. a pneumatic motor blade; 20. a high pressure gas tank; 21. an electromagnetic valve; 22. a roller; 23. an oil suction port; 24. an oil pressing port; 25. an air inlet; 26. a primary exhaust port; 27. and (4) secondary exhaust.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, an oil pump according to an embodiment of the present invention includes:
the oil pump main body mechanism moves in a gear matching mode and is used for introducing and pumping the engine oil out in a pressurizing mode;
the transmission mechanism is connected and transmitted at one end of the oil pump main body mechanism and is used for moving in a fluid driving mode and driving the oil pump main body mechanism to move synchronously;
and the driving mechanism is connected and arranged at the fluid input end of the transmission mechanism and used for controlling the fluid to drive the transmission mechanism and the oil pump main body mechanism to move so as to realize the pre-lubrication of the oil pump main body mechanism before the oil pump main body mechanism runs.
In the embodiment of the invention, preferably, the transmission mechanism is linked with the oil pump main body mechanism, the driving mechanism is used for generating fluid and injecting the fluid into the transmission mechanism, the oil pump main body mechanism is communicated with and arranged in a lubricating system of the engine, the oil pump main body mechanism is driven to operate after the engine is started, so that the lubricating oil is continuously introduced into and pumped out under pressure by the oil pump main body mechanism, the system is lubricated, the driving mechanism is started when the engine is not operated, the fluid is controlled to enter the transmission mechanism by the driving mechanism, the transmission mechanism is driven to operate by high-pressure fluid, and then the pre-lubrication is rapidly and energy-saving completed in a fluid driving mode before the engine is not operated, the service life of each part structure in the engine is prolonged, and the fluid driving mode can.
As shown in fig. 8, as a preferred embodiment of the present invention, the driving mechanism includes:
the fluid generating structure is used for generating and outputting high-pressure fluid;
and the fluid transmission structure is communicated with the output end of the fluid generation structure and the fluid input end of the transmission mechanism, is used for transmitting the fluid and is used for limiting the passage of the fluid in a timing mode.
In the embodiment of the present invention, preferably, the fluid generating structure may adopt a high pressure gas tank 20, an output end of the high pressure gas tank 20 is communicated with a fluid input end of the transmission mechanism through a fluid transmission structure, the high pressure gas tank 20 can output stable high pressure gas after being started, the fluid transmission structure includes a pipeline communicating the output end of the high pressure gas tank 20 and the fluid input end of the transmission mechanism, the pipeline is provided with an electromagnetic valve 21 and an ECU (Electronic Control Unit) for controlling the opening and closing of the electromagnetic valve 21, before the engine is not started, the ECU controls the electromagnetic valve 21 to be opened, gas enters the transmission mechanism and causes the transmission mechanism to move, so that the oil pump main body mechanism synchronously moves to pump oil, after ten seconds, the electromagnetic valve 21 is automatically disconnected under the control of the ECU, this completes the pre-lubrication process before the engine is started, and the high-pressure gas in the high-pressure gas tank 20 is stored when the entire vehicle is braked.
As shown in fig. 2 and 6, as a preferred embodiment of the present invention, the transmission mechanism includes:
the fluid input end of the accommodating structure is communicated with the fluid transmission structure, is used for arranging the rotating structure and drives the rotating structure to move through high-pressure fluid input;
and the rotating structure is rotatably arranged in the accommodating structure and is arranged opposite to the fluid input end of the accommodating structure and used for driving the oil pump main body mechanism to synchronously move.
The rotating structure includes:
the eccentric assembly is eccentrically and rotatably arranged in the accommodating structure and is coaxially linked with the oil pump main body mechanism;
the blade assembly is elastically arranged on the periphery of the eccentric assembly and is movably abutted against the inner cavity of the containing structure, and the blade assembly is used for matching with high-pressure fluid entering from the fluid input end of the containing structure, driving the eccentric assembly to rotate under the impact of the fluid and guiding out the fluid.
And the accommodating structure is also provided with a plurality of groups of fluid output ends at one side far away from the fluid input end in the rotating direction of the eccentric assembly.
In the embodiment of the present invention, preferably, the accommodating structure may adopt an air motor housing 11, the eccentric assembly may adopt a motor rotor 12 eccentrically disposed in the air motor housing 11, the motor rotor 12 is connected to and linked with the oil pump main body mechanism by a third half key 15, one side of the air motor housing 11 is provided with a fluid input end in a penetrating manner, the fluid input end may adopt an air inlet 25, fluid enters a gap between the motor rotor 12 and the air motor housing 11 through the air inlet 25, a side wall of the air motor housing 11, which is far away from the air inlet 25 along the rotation direction of the motor rotor 12, is further provided with a primary air outlet 26 and a secondary air outlet 27 in a penetrating manner, fluid may flow out through the primary air outlet 26 and the secondary air outlet 27, the blade assembly may adopt a motor blade 19, the motor blade 19 is slidably embedded and disposed on the side wall of the motor rotor 12, and is disposed in a, the tail end of the motor blade 19 is elastically connected with the interior of the motor rotor 12 through a spring, the tail end of the motor blade 19, far away from the motor rotor 12, is movably abutted against the inner wall of the pneumatic motor shell 11, and fluid enters the pneumatic motor shell 11 through the air inlet 25 and then can impact the motor blade 19 so as to drive the motor rotor 12 to rotate.
As shown in fig. 3, 4, 5 and 7, as a preferred embodiment of the present invention, the oil pump main body mechanism includes:
the pump body structure is connected to one side of the accommodating structure and is used for accommodating the output structure and allowing engine oil to pass through;
and the output structure is rotationally connected in the pump body structure and is connected with the eccentric assembly for transmission, and is used for introducing engine oil and pumping out the engine oil under pressure.
The output structure includes:
the pre-lubrication output assembly is rotationally connected in the pump body structure, is connected with the eccentric assembly for transmission and is used for introducing and pumping out engine oil in a pre-starting stage;
and the conventional output assembly is rotatably connected in the pump body structure and is used for performing conventional oil inlet and outlet after the engine runs.
And a limiting structure for limiting the movement direction of the pre-lubrication output assembly is connected between the pre-lubrication output assembly and the pump body structure.
In the embodiment of the present invention, preferably, the pump body structure includes an oil pump housing 7 and an oil pump cover 16 connected to the oil pump housing 7, the oil pump housing 7 and the oil pump cover 16 cooperate to form a cavity, an oil suction port 23 and an oil pressing port 24 are respectively disposed through two sides of the cavity, lubricating oil in the oil suction port 23 is from an engine oil pan, the oil pressing port 24 is communicated with an engine lubricating system, the oil pump cover 16 and the oil pump housing 7 are fixed together by three first bolts 8, three second bolts 17 penetrate through the air motor housing 11 and the oil pump cover 16 and then are fixedly connected to the oil pump housing 7, the two second bolts 17 form a regular triangle distributed third bolt 18 to fix the air motor housing 11 to the oil pump cover 16, and the third bolt 18 does not penetrate through the oil pump cover 16.
In the embodiment of the invention, preferably, the pre-lubrication output assembly can adopt a pinion shaft 1 and a second driven gear 10 which are rotatably connected in a cavity formed by an oil pump shell 7 and an oil pump cover 16, one end of the pinion shaft 1 penetrates through the oil pump cover 16 and then extends into a pneumatic motor shell 11, and is in transmission connection with a motor rotor 12 through a third semicircular key 15, the conventional output assembly comprises a main gear shaft 4 and a first driven gear 2, the main gear shaft 4 and the pinion shaft 1 are arranged in parallel, the opposite ends of the main gear shaft 4 and the pinion shaft 1 extending into the pneumatic motor shell 11 penetrate through the oil pump shell 7 and are in transmission connection with a transmission gear 3 through a first semicircular key 6, a nut 5 and a shaft shoulder of the main gear shaft 4 are in sleeve fit and are matched with the transmission gear 3, the transmission gear 3 is in transmission connection with an engine, the first driven gear 2 rotating around the pinion shaft 1 is in transmission engagement with the main gear shaft 4, the second driven gear 10 rotating around the main gear shaft 4 is in meshed transmission with the pinion shaft 1, the second driven gear 10 and the first driven gear 2 are respectively positioned on two sides of a cavity structure formed by an oil pump shell 7 and an oil pump cover 16, the second driven gear 10 and the first driven gear 2 are separated in the oil pump shell 7 through a separating sheet 9, and the pinion shaft 1, the second driven gear 10, the main gear shaft 4 and the first driven gear 2 form two sets of mechanisms for introducing and pumping oil.
In the embodiment of the present invention, preferably, the star wheel 13 may be adopted as the limiting structure, the star wheel 13 is connected with the pinion shaft 1 for transmission through the second semicircular key 14, and the star wheel 13 and the rollers 22 are matched to form the overrunning clutch, the star wheel 13 is located in a circular space in the engine oil pump cover 16, the side edges of the star wheel 13 and the engine oil pump cover 16 form four sets of triangular spaces with short edges vertically arranged and bevel edges being arc surfaces, the rollers 22 are arranged in the triangular spaces, when the star wheel 13 rotates clockwise, the rollers 22 are located at right angles in the triangular spaces to form synchronous rolling, and when the star wheel 13 rotates counterclockwise along with the pinion shaft 1, the rollers 22 enter sharp corner parts of the triangular spaces to be locked and do not rotate any more, so that the one-way rotation of the pinion shaft 1 can be limited.
The embodiment of the invention also provides an application of the oil pump in an engine lubricating system.
According to the oil pump provided by the embodiment of the invention, when a vehicle is ready to start and a key is turned ON, the ECU controls the electromagnetic valve 21 to be opened, the motor rotor 12 drives the auxiliary gear shaft 1 to rotate, and the oil in the oil pan is pumped into an engine oil channel to pre-lubricate the engine during starting. After about five seconds, when the key is turned to START, the engine is started by the starter motor, and the engine can simultaneously pump oil by the starting mode and the crankshaft connected by the transmission gear 3. After five seconds, the electromagnetic valve 21 is automatically closed, the pre-lubrication process is finished, the lubrication system is established, the engine is started and is in an idling condition, the crankshaft drives the transmission gear 3 and the main gear shaft 4 to operate, and oil pressure is continuously provided for the lubrication system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An oil pump, comprising:
the oil pump main body mechanism moves in a gear matching mode and is used for introducing and pumping the engine oil out in a pressurizing mode;
the transmission mechanism is connected and transmitted at one end of the oil pump main body mechanism and is used for moving in a fluid driving mode and driving the oil pump main body mechanism to move synchronously;
and the driving mechanism is connected and arranged at the fluid input end of the transmission mechanism and used for controlling the fluid to drive the transmission mechanism and the oil pump main body mechanism to move so as to realize the pre-lubrication of the oil pump main body mechanism before the oil pump main body mechanism runs.
2. The oil pump of claim 1, wherein the drive mechanism comprises:
the fluid generating structure is used for generating and outputting high-pressure fluid;
and the fluid transmission structure is communicated with the output end of the fluid generation structure and the fluid input end of the transmission mechanism, is used for transmitting the fluid and is used for limiting the passage of the fluid in a timing mode.
3. The oil pump of claim 2, wherein the transmission mechanism includes:
the fluid input end of the accommodating structure is communicated with the fluid transmission structure, is used for arranging the rotating structure and drives the rotating structure to move through high-pressure fluid input;
and the rotating structure is rotatably arranged in the accommodating structure and is arranged opposite to the fluid input end of the accommodating structure and used for driving the oil pump main body mechanism to synchronously move.
4. The oil pump according to claim 2, wherein the rotating structure includes:
the eccentric assembly is eccentrically and rotatably arranged in the accommodating structure and is coaxially linked with the oil pump main body mechanism;
the blade assembly is elastically arranged on the periphery of the eccentric assembly and is movably abutted against the inner cavity of the containing structure, and the blade assembly is used for matching with high-pressure fluid entering from the fluid input end of the containing structure, driving the eccentric assembly to rotate under the impact of the fluid and guiding out the fluid.
5. The oil pump of claim 4, wherein the receiving structure is further provided with a plurality of sets of fluid outlets on a side of the eccentric assembly that is away from the fluid inlets in a rotational direction of the eccentric assembly.
6. The oil pump according to claim 2, characterized in that the oil pump main body mechanism includes:
the pump body structure is connected to one side of the accommodating structure and is used for accommodating the output structure and allowing engine oil to pass through;
and the output structure is rotationally connected in the pump body structure and is connected with the eccentric assembly for transmission, and is used for introducing engine oil and pumping out the engine oil under pressure.
7. The oil pump of claim 6, wherein the output structure comprises:
the pre-lubrication output assembly is rotationally connected in the pump body structure, is connected with the eccentric assembly for transmission and is used for introducing and pumping out engine oil in a pre-starting stage;
and the conventional output assembly is rotatably connected in the pump body structure and is used for performing conventional oil inlet and outlet after the engine runs.
8. The oil pump of claim 7, wherein a limiting structure for limiting the movement direction of the pre-lubrication output assembly is connected between the pre-lubrication output assembly and the pump body structure.
9. Use of an oil pump according to any one of claims 1 to 8 in an engine lubrication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352850.7A CN110985372A (en) | 2019-12-25 | 2019-12-25 | Oil pump and application thereof in engine lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352850.7A CN110985372A (en) | 2019-12-25 | 2019-12-25 | Oil pump and application thereof in engine lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985372A true CN110985372A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911352850.7A Pending CN110985372A (en) | 2019-12-25 | 2019-12-25 | Oil pump and application thereof in engine lubricating system |
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| CN111980916A (en) * | 2020-09-04 | 2020-11-24 | 吉林大学 | Auxiliary pneumatic motor driving single-pair gear type oil pump |
| CN113006897A (en) * | 2021-04-26 | 2021-06-22 | 吉林大学 | Engine gear pump structure with pre-lubrication function and control method thereof |
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| CN113006897A (en) * | 2021-04-26 | 2021-06-22 | 吉林大学 | Engine gear pump structure with pre-lubrication function and control method thereof |
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Application publication date: 20200410 |