CN110848020B - System for recovering and converting braking energy into turbine drive - Google Patents
System for recovering and converting braking energy into turbine drive Download PDFInfo
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- CN110848020B CN110848020B CN201911169577.4A CN201911169577A CN110848020B CN 110848020 B CN110848020 B CN 110848020B CN 201911169577 A CN201911169577 A CN 201911169577A CN 110848020 B CN110848020 B CN 110848020B
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- storage tank
- friction wheel
- oil storage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
- F02B37/11—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump driven by other drive at starting only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/06—Mobile combinations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/104—Structural association with clutches, brakes, gears, pulleys or mechanical starters with eddy-current brakes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a system for recovering and converting braking energy into turbine driving, which comprises a braking force recovery device, a hydraulic energy storage device and a turbine driving device, wherein the hydraulic energy storage device is arranged on the braking force recovery device; the hydraulic energy storage device comprises an oil storage tank containing an inner layer and an outer layer, an end cover and an air bag; the braking force recovery device comprises a hydraulic brake component, a friction wheel transmission component and an eccentric hydraulic plunger pump, wherein the hydraulic brake component is used for driving the friction wheel transmission component to work, the friction wheel transmission component is used for driving the eccentric hydraulic plunger pump to work, and the eccentric hydraulic plunger pump is used for sucking and pressurizing oil on the outer layer of the oil storage tank and pumping the oil back to the inner layer of the oil storage tank for storage; the turbine driving device comprises a hydraulic motor, an overrunning clutch, a turbocharger and a rotating speed sensor, wherein the hydraulic motor is communicated with the oil storage tank, and an electromagnetic valve is arranged between the hydraulic motor and the oil storage tank; the invention can lead the turbocharger to work when the engine is at low speed, improve the power output of the engine, avoid the occurrence of 'turbo lag' and improve the driving feeling.
Description
Technical Field
The present invention relates to a system for recovering and converting braking energy into turbine drive.
Background
At present, superchargers of an air inlet system of an automobile engine are divided into two types of mechanical superchargers and exhaust gas turbochargers, wherein the exhaust gas turbochargers do not consume engine power in the working process, and the application range is wide. The working principle of the exhaust gas turbocharging is that the exhaust gas discharged by the combustion of the engine drives the exhaust gas turbine to rotate, and drives the coaxial air compressing impeller to pressurize air and then enter the engine. When the rotating speed of the engine is low, the exhaust volume is small, and the exhaust turbine cannot be pushed to reach the working rotating speed, so that the exhaust turbocharger cannot work when the rotating speed of the engine is low; meanwhile, because the turbine has certain mass, certain delay is always existed when the waste gas pushes the waste gas turbine to overcome the rotational inertia of the waste gas turbine to rotate, and the phenomenon is called turbo lag, which reflects that the engine has power response after stepping on the accelerator in driving feeling.
Disclosure of Invention
The object of the present invention is to overcome the above mentioned drawbacks and to provide a system for recovering and converting braking energy into a turbine drive.
In order to achieve the purpose, the invention adopts the following specific scheme:
a system for recovering braking energy and converting the braking energy into turbine drive comprises a braking force recovery device, a hydraulic energy storage device and a turbine drive device, wherein:
the hydraulic energy storage device comprises an oil storage tank, an end cover and an air bag, wherein the oil storage tank comprises an inner layer and an outer layer, the air bag is filled with high-pressure nitrogen, the air bag is arranged in the inner layer of the oil storage tank, the end cover is fixed on one end part of the oil storage tank, the inner layer of the oil storage tank is used for storing high-pressure oil, and the outer layer of the oil storage tank is used for storing low-pressure oil;
the braking force recovery device comprises a hydraulic brake component, a friction wheel transmission component and an eccentric hydraulic plunger pump, wherein the hydraulic brake component is fixed on an external vehicle body through a caliper support and is used for driving the friction wheel transmission component to work;
the turbine driving device comprises a hydraulic motor, an overrunning clutch, a turbocharger and a rotating speed sensor, an oil inlet of the hydraulic motor is communicated with an inner layer of an oil storage tank, an electromagnetic valve is arranged between the oil inlet of the hydraulic motor and the inner layer of the oil storage tank, an oil outlet of the hydraulic motor is communicated with an outer layer of the oil storage tank, an output shaft of the hydraulic motor is connected with an inner ring of the overrunning clutch, an outer ring of the overrunning clutch is connected with a rotor shaft of the turbocharger, and the rotating speed sensor is used for detecting the rotating speed of the turbocharger and controlling the on-off of the electromagnetic valve.
In the invention, the eccentric hydraulic plunger pump comprises a pump body, an eccentric shaft and an oil distribution plate, wherein one side of the pump body is fixed on a caliper bracket, the oil distribution plate is fixed on the other side of the pump body, a low-pressure channel and a high-pressure channel which are parallel to each other are arranged on the oil distribution plate, the middle part of the low-pressure channel is communicated with the outer layer of an oil storage tank, the middle part of the high-pressure channel is communicated with the inner layer of the oil storage tank, two ends of the eccentric shaft are rotatably connected to the middle part of the pump body, one end of the eccentric shaft is in transmission connection with a friction wheel transmission assembly, two symmetrical plunger cavities are arranged on the pump body, plunger bodies are arranged in the two plunger cavities, the two plunger bodies are respectively hinged with the eccentric shaft, two symmetrical partition channels are arranged in the pump body corresponding to the two plunger cavities, combination valves are respectively arranged in the two partition channels and are respectively correspondingly communicated with the plunger cavities, one end of each of the two separation channels is correspondingly communicated with two ends of the low-pressure channel, and the other end of each of the two separation channels is correspondingly communicated with two ends of the high-pressure channel.
According to the invention, the friction wheel transmission assembly comprises a U-shaped roller support, a first friction wheel, a second friction wheel and a spline shaft, two ends of the roller support are fixed on the hydraulic brake assembly, the first friction wheel and the second friction wheel are both rotationally connected to the roller support, the first friction wheel is attached to the second friction wheel in a leaning mode, the first friction wheel is attached to the hydraulic brake assembly in a leaning mode, the second friction wheel is further fixedly sleeved with a first conical gear, one end of the spline shaft is rotationally connected to the bottom end of the roller support and fixedly sleeved with a second conical gear, the first conical gear is meshed with the second conical gear, and the other end of the spline shaft is sleeved at one end of the eccentric shaft.
The hydraulic brake assembly comprises a brake disc, a brake caliper body, a brake oil cylinder, a first brake pad and a second brake pad, wherein the brake caliper body is arranged on the outer edge of the brake disc, one side of a caliper support is fixedly connected with a guide rod, the brake caliper body is sleeved on the guide rod, a first reset spring is further sleeved on the guide rod, two ends of the first reset spring abut against the caliper support and the brake caliper body, a notch for providing a movable space for the brake oil cylinder is formed in one side, close to the caliper support, of the brake caliper body, the brake oil cylinder is located in the notch, the output end of the brake oil cylinder is fixedly connected with a floating plate, the first brake pad is fixed on the other side of the floating plate, the second brake pad is correspondingly fixed on the inner side face of the brake caliper body, two ends of a roller support are fixed on one side of the floating plate, and a first friction wheel movably penetrates through the floating, A first brake pad.
The turbocharger comprises a supercharger support, an air compression turbine and an exhaust gas turbine, wherein the air compression turbine is fixed on one side of the supercharger support, the exhaust gas turbine is fixed on the other side of the supercharger, one end of a rotor shaft of the air compression turbine is in transmission connection with an outer ring of an overrunning clutch, the other end of the rotor shaft of the air compression turbine is in transmission connection with the rotor shaft of the exhaust gas turbine, a hydraulic motor is fixed on the supercharger support through a motor support, and a rotating speed sensor is fixed on the motor support and located below the overrunning clutch.
The invention has the beneficial effects that: through the structure, the brake energy can be recovered and converted into the driving force of the air compressor turbine, so that the turbocharger is involved in working at the low speed of the engine, the power output of the engine is improved, the phenomenon of turbine lag is avoided, and the driving feeling is improved.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of the braking force recovery device of the present invention;
FIG. 3 is a cross-sectional view of the hydraulic accumulator of the present invention;
FIG. 4 is a perspective view of the turbine drive of the present invention;
FIG. 5 is a perspective view of the hydraulic brake assembly of the present invention;
FIG. 6 is an exploded schematic view of the hydraulic brake assembly of the present invention;
FIG. 7 is a perspective view of the friction wheel drive assembly of the present invention;
FIG. 8 is a perspective view of an eccentric hydraulic plunger pump of the present invention;
FIG. 9 is a cross-sectional view of the eccentric hydraulic plunger pump of the present invention;
FIG. 10 is a schematic view of the pump body of the present invention;
FIG. 11 is a schematic view of the oil distribution plate of the present invention;
description of reference numerals: 1-a braking force recovery device; 11-a hydraulic brake assembly; 111-caliper bracket; 112-a brake disc; 113-brake caliper body; 114-a brake cylinder; 115-a first brake pad; 116-a second brake pad; 117-guide bar; 118-a first return spring; 119-a floating plate; 12-a friction wheel transmission assembly; 121-roller support; 122 — a first friction wheel; 123-a second friction wheel; 124-spline shaft; 13-eccentric hydraulic plunger pump; 131-a pump body; 1311-plunger cavity; 1312-separation channels; 132-an eccentric shaft; 133-oil distribution plate; 1331-a low pressure channel; 1332-high pressure channel; 134-a plunger body; 135-a combination valve;
2-a hydraulic energy storage device; 21-oil storage tank; 22-end cap; 23-air bag;
3-a turbine drive; 31-a hydraulic motor; 32-an overrunning clutch; 33-a turbocharger; 331-a supercharger support; 332-a compressor turbine; 333-an exhaust gas turbine; 34-a rotational speed sensor; 35-a motor support;
4-electromagnetic valve.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.
As shown in fig. 1 to 11, the system for recovering and converting braking energy into turbine driving according to the present embodiment includes a braking force recovery device 1, a hydraulic energy storage device 2, and a turbine driving device 3, wherein:
the hydraulic energy storage device 2 comprises an oil storage tank 21 with an inner layer and an outer layer, an end cover 22 and an air bag 23 filled with high-pressure nitrogen, wherein the air bag 23 is arranged on the inner layer of the oil storage tank 21, the end cover 22 is fixed on one end part of the oil storage tank 21, the inner layer of the oil storage tank 21 is used for storing high-pressure oil, and the outer layer of the oil storage tank 21 is used for storing low-pressure oil;
the braking force recovery device 1 comprises a hydraulic brake component 11, a friction wheel transmission component 12 and an eccentric hydraulic plunger pump 13, wherein the hydraulic brake component 11 is fixed on an external vehicle body through a caliper support 111 and is used for driving the friction wheel transmission component 12 to work, the friction wheel transmission component 12 is fixed on the hydraulic brake component 11 and is used for driving the eccentric hydraulic plunger pump 13 to work, the eccentric hydraulic plunger pump 13 is fixed on the caliper support 111, and the eccentric hydraulic plunger pump 13 is used for sucking oil on the outer layer of an oil storage tank 21, pressurizing the oil and pumping the oil back to the inner layer of the oil storage tank 21 for storage;
the turbine driving device 3 comprises a hydraulic motor 31, an overrunning clutch 32, a turbocharger 33 and a speed sensor 34, an oil inlet of the hydraulic motor 31 is communicated with an inner layer of an oil storage tank 21 through an oil pipe, an electromagnetic valve 4 is arranged between the oil inlet and the inner layer of the oil storage tank 21, an oil outlet of the hydraulic motor 31 is communicated with an outer layer of the oil storage tank 21 through an oil pipe, an output shaft of the hydraulic motor 31 is connected with an inner ring of the overrunning clutch 32, an outer ring of the overrunning clutch 32 is connected with a rotor shaft of the turbocharger 33, and the speed sensor 34 is used for detecting the rotating speed of the turbocharger 33 and controlling the on-off of the electromagnetic valve 4.
The specific operation principle of the embodiment is as follows: when a driver steps on a brake pedal, the hydraulic brake assembly 11 performs brake braking and drives the friction wheel transmission assembly 12 to work, the friction wheel transmission assembly 12 drives the eccentric hydraulic plunger pump 13 to work, the eccentric hydraulic plunger pump 13 sucks low-pressure oil on the outer layer of the oil storage tank 21, then the low-pressure oil is pressurized to form high-pressure oil, the high-pressure oil is pumped back to the inner layer of the oil storage tank 21 to be stored, the high-pressure oil enters the oil storage tank 21 to press the air bag 23, so that the air bag 23 is compressed, the volume of the air bag 23 is reduced, the pressure of the air bag is increased, the pressure potential energy of the high-pressure oil is stored in high-pressure nitrogen in the air bag 23, the conversion of the braking energy from mechanical energy to the pressure potential energy of the oil is completed, then when the rotating speed of the engine is low, the turbocharger 33 cannot work, and at the moment, the rotating speed sensor 34 detects a signal that the rotating speed of the outer ring of the overrunning clutch 32 is low, and controlling the electromagnetic valve 4 to work, so that the inner layer of the oil storage tank 21 is communicated with an oil inlet of the hydraulic motor 31, high-pressure oil is discharged out of the oil storage tank 21, the air bag 23 recovers deformation and increases volume, energy is released by taking the high-pressure oil as a medium, the high-pressure oil is pushed to enter the hydraulic motor 31 at high speed, an output shaft of the hydraulic motor 31 is pushed to rotate, when the turbocharger 33 rotates at low speed, the overrunning clutch 32 is connected with the power of the output shaft of the hydraulic motor 31 and a rotor shaft of the turbocharger 33, so that the hydraulic motor 31 drives the turbocharger 33 to rotate, when the rotor shaft of the turbocharger 33 rotates at high speed, the overrunning clutch 32 is disconnected with the power of the rotor shaft of the turbocharger 33, the rotational inertia of the turbocharger 33 is reduced, and the high-pressure oil flows out of an oil outlet of the hydraulic motor 31 after passing through the hydraulic motor 31, and flows back to the outer layer of the oil storage tank 21, thereby completing the conversion of oil hydraulic pressure potential energy into mechanical energy, solving the problem that the turbocharger 33 of the exhaust turbine 333 cannot work at low engine speed and avoiding the phenomenon of 'turbo lag' of the turbocharger 33 of the exhaust turbine 333.
In the system for recovering and converting braking energy into turbine drive according to this embodiment, the eccentric hydraulic plunger pump 13 includes a pump body 131, an eccentric shaft 132, and an oil distribution plate 133, one side of the pump body 131 is fixed on the caliper bracket 111, the oil distribution plate 133 is fixed on the other side of the pump body 131, the oil distribution plate 133 is provided with a low pressure channel 1331 and a high pressure channel 1332 which are parallel to each other, the middle of the low pressure channel 1331 is communicated with the outer layer of the oil storage tank 21 through an oil pipe, the middle of the high pressure channel 1332 is communicated with the inner layer of the oil storage tank 21 through an oil pipe, two ends of the eccentric shaft 132 are rotatably connected to the middle of the pump body 131, one end of the eccentric shaft 132 is in transmission connection with the friction wheel transmission assembly 12, the pump body 131 is provided with two symmetrical plunger cavities 1311, two plunger bodies 134 are respectively provided in the two plunger cavities 1311, and the two plunger bodies 134 are respectively hinged to the eccentric shaft 132, the pump body 131 is provided with two symmetrical partition passages 1312 corresponding to the two plunger chambers 1311, the two partition passages 1312 are respectively provided with a combination valve 135 therein, the two combination valves 135 are respectively correspondingly communicated with the plunger chambers 1311, one ends of the two partition passages 1312 are correspondingly communicated with two ends of the low-pressure passage 1331, and the other ends of the two partition passages 1312 are correspondingly communicated with two ends of the high-pressure passage 1332.
Specifically, as shown in fig. 8 to 11, during operation, the friction wheel transmission assembly 12 drives the eccentric shaft 132 to rotate, the eccentric shaft 132 drives the two plunger bodies 134 to reciprocate simultaneously, so as to change the pressures in the two plunger chambers 1311, when the two plunger bodies 134 move rightwards simultaneously, the pressure in the left plunger chamber 1311 decreases, the pressure in the right plunger chamber 1311 increases, so as to wick the upper valve in the left combination valve 135 away, and push the lower valve core in the right combination valve 135 away, at this time, the low-pressure oil in the outer layer of the oil reservoir 21 enters the low-pressure passage 1331, then enters from one end of the left partition passage 1312, passes through the upper valve core of the combination valve 135 and enters the plunger chambers 1311, so as to complete the suction of the low-pressure oil, then the two plunger bodies 134 move leftwards simultaneously, the pressure in the left plunger chamber 1311 gradually increases, that is, so as to pressurize the low-pressure oil to form high-pressure oil, the pressure in the right plunger chamber 1311 is gradually reduced, so that the lower valve core of the left combination valve 135 is pushed open, the upper valve core of the right combination valve 135 is sucked open, at the moment, the high-pressure oil in the left plunger chamber 1311 flows into the other end of the separation channel 1312 through the lower valve core of the combination valve 135, then flows into the high-pressure channel 1332 from the other end of the separation channel 1312, then flows into the inner layer of the oil storage tank 21 from the high-pressure channel 1332 for storage, and the low-pressure oil is sucked in the right plunger chamber 1311 from the outer layer of the oil storage tank 21, so that the mechanical energy of the automobile braking energy is converted into the pressure potential energy of the oil through the transmission of the friction wheel transmission assembly 12 and is stored in the oil storage tank 21, and the braking energy is continuously recovered and converted into the pressure potential energy of the oil during the braking process.
A system for recovering and converting braking energy into a turbine drive according to the present embodiment, as shown in figure 7, the friction wheel transmission assembly 12 includes a U-shaped roller bracket 121, a first friction wheel 122, a second friction wheel 123 and a spline shaft 124, the two ends of the roller bracket 121 are fixed on the hydraulic brake assembly 11, the first friction wheel 122 and the second friction wheel 123 are both rotatably connected to the roller bracket 121, and the first friction wheel 122 abuts against the second friction wheel 123, the first friction wheel 122 is also attached to the hydraulic brake assembly 11, the second friction wheel 123 is also fixedly sleeved with a first conical gear, one end of the spline shaft 124 is rotatably connected to the bottom end of the roller bracket 121 and fixedly sleeved with a second conical gear, the first conical gear and the second conical gear are engaged with each other, and the other end of the spline shaft 124 is sleeved at one end of the eccentric shaft 132. Specifically, during braking, the hydraulic brake assembly 11 drives the first friction wheel 122 to rotate, the first friction wheel 122 drives the second friction wheel 123 to rotate the first conical gear, the second conical gear drives the spline shaft 124 to rotate, and the spline shaft 124 drives the eccentric shaft 132 to rotate, so that the braking energy of the hydraulic brake assembly 11 is transmitted into the eccentric hydraulic plunger pump 13, the eccentric hydraulic plunger pump 13 is driven to work, and the braking energy is recovered and converted into pressure potential energy.
In the system for recovering and converting braking energy into turbine drive described in this embodiment, as shown in fig. 5 and 6, the hydraulic brake assembly 11 includes a brake disc 112, a caliper body 113, a brake cylinder 114, a first brake pad 115 and a second brake pad 116, the caliper body 113 is disposed on an outer edge of the brake disc 112, one side of the caliper support 111 is fixedly connected with a guide rod 117, the caliper body 113 is sleeved on the guide rod 117, the guide rod 117 is further sleeved with a first return spring 118, two ends of the first return spring 118 are abutted against the caliper support 111 and the caliper body 113, one side of the caliper body 113 close to the caliper support 111 is provided with a notch for providing a moving space for the brake cylinder 114, the brake cylinder 114 is located in the notch, an output end of the brake cylinder 114 is fixedly connected with a floating plate 119, the first brake pad 115 is fixed on the other side of the floating plate 119, the second brake pad 116 is correspondingly fixed on the inner side surface of the caliper body 113, both ends of the roller bracket 121 are fixed on one side of the floating plate 119, and the first friction wheel 122 movably passes through the floating plate 119 and the first brake pad 115. Specifically, an automobile tire is mounted on a brake disc 112, when a driver steps on a brake pedal, the brake cylinder 114 is triggered to operate, an output end of the brake cylinder 114 pushes a floating plate 119 and a first brake pad 115 to extend out, so that the first brake pad 115 and a second brake pad 116 tightly hold the brake disc 112, meanwhile, a first friction wheel 122 is in contact with the brake disc 112, due to the action of friction force, the brake disc 112 drives the first friction wheel 122 to rotate, and the first friction wheel 122 converts braking force into rotation torque of a spline shaft 124 through a second friction wheel 123, a first conical gear and a second conical gear, so that the transmission of the braking force to the eccentric hydraulic plunger pump 13 is completed.
In the system for recovering and converting braking energy into turbine drive in this embodiment, as shown in fig. 4, the turbocharger 33 includes a supercharger support 331, a compressor turbine 332 and an exhaust turbine 333, the compressor turbine 332 is fixed to one side of the supercharger support 331, the exhaust turbine 333 is fixed to the other side of the supercharger, one end of a rotor shaft of the compressor turbine 332 is in transmission connection with an outer ring of the overrunning clutch 32, the other end of the rotor shaft of the compressor turbine 332 is in transmission connection with a rotor shaft of the exhaust turbine 333, the hydraulic motor 31 is fixed to the supercharger support 331 through a motor support 35, and the rotation speed sensor 34 is fixed to the motor support 35 and located below the overrunning clutch 32. Specifically, when the engine speed is low, the exhaust gas turbine 333 cannot drive the compressor wheel 332 to rotate, at this time, the speed sensor 34 controls the electromagnetic valve 4 to work, so that the inner layer of the oil storage tank 21 is communicated with an oil inlet of the hydraulic motor 31, high-pressure oil enters the hydraulic motor 31 to drive the hydraulic motor 31 to rotate, an output shaft of the hydraulic motor 31 drives the compressor wheel 332 to rotate through the overrunning clutch 32, the compressor wheel 332 can work at the same time when the engine speed is low, the purpose of recovering and converting braking energy into driving the compressor wheel 332 to work is achieved, and the phenomenon of 'turbine lag' generated when the exhaust gas turbine 333 drives the compressor wheel 332 to rotate can be avoided; when the compressor turbine 332 rotates at a high speed driven by the exhaust turbine 333, the overrunning clutch 32 disconnects the power connection between the rotor shaft of the compressor turbine 332 and the output shaft of the hydraulic motor 31, so that the rotational inertia of the compressor turbine 332 is reduced.
In this embodiment, the overrunning clutch 32 includes a clutch inner ring, a clutch outer ring and a circular ring side cover, the clutch inner ring is arranged in the clutch outer ring, the circular ring side cover covers one end of the clutch outer ring, the inner wall of the clutch outer ring is provided with three switching grooves, each switching groove is internally provided with a roller and a second return spring, two ends of the second return spring are respectively and fixedly connected with the roller and the clutch outer ring, the roller is arranged in a tangent way with the clutch inner ring under the action of the elastic force of the second return spring, the clutch inner ring is connected with the output shaft of the hydraulic motor 31, the clutch outer ring is connected with the rotor shaft of the compressor wheel 332, when the rotating speed of the outer ring of the clutch is lower, the elastic force of the second return spring is larger than the centrifugal force applied to the roller, the roller abuts against the inner ring of the clutch, and the rotating force of the inner ring of the clutch is transmitted to the outer ring of the clutch through static friction force; when the rotating speed of the outer ring of the clutch is high, the elastic force of the second return spring is smaller than the centrifugal force applied to the roller, the roller moves and is separated from the contact with the inner ring of the clutch, so that the power transmission between the inner ring and the outer ring is cut off, and the power connection between the output shaft of the hydraulic motor 31 and the rotor shaft of the air compressor turbine 332 is cut off.
Through the structure, the braking energy can be recovered and converted into the driving force of the air compressor turbine 332, so that the turbocharger 33 is involved in working at the low speed of the engine, the power output of the engine is improved, the turbo lag phenomenon is avoided, and the driving feeling is improved.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.
Claims (5)
1. A system for recovering braking energy and converting the recovered braking energy into turbine drive, characterized by comprising a braking force recovery device (1), a hydraulic energy storage device (2) and a turbine drive device (3), wherein:
the hydraulic energy storage device (2) comprises an oil storage tank (21) with an inner layer and an outer layer, an end cover (22) and an air bag (23) filled with high-pressure nitrogen, wherein the air bag (23) is arranged on the inner layer of the oil storage tank (21), the end cover (22) is fixed on one end part of the oil storage tank (21), the inner layer of the oil storage tank (21) is used for storing high-pressure oil, and the outer layer of the oil storage tank (21) is used for storing low-pressure oil;
the braking force recovery device (1) comprises a hydraulic brake assembly (11), a friction wheel transmission assembly (12) and an eccentric hydraulic plunger pump (13), wherein the hydraulic brake assembly (11) is fixed on an external vehicle body through a caliper support (111) and is used for driving the friction wheel transmission assembly (12) to work, the friction wheel transmission assembly (12) is fixed on the hydraulic brake assembly (11) and is used for driving the eccentric hydraulic plunger pump (13) to work, the eccentric hydraulic plunger pump (13) is fixed on the caliper support (111), and the eccentric hydraulic plunger pump (13) is used for sucking oil on the outer layer of an oil storage tank (21), pressurizing the oil and pumping the oil back to the inner layer of the oil storage tank (21) for storage;
the turbine driving device (3) comprises a hydraulic motor (31), an overrunning clutch (32), a turbocharger (33) and a rotating speed sensor (34), an oil inlet of the hydraulic motor (31) is communicated with an inner layer of an oil storage tank (21) and an electromagnetic valve (4) is arranged between the oil inlet of the hydraulic motor (31) and the inner layer of the oil storage tank (21), an oil discharge port of the hydraulic motor (31) is communicated with an outer layer of the oil storage tank (21), an output shaft of the hydraulic motor (31) is connected with an inner ring of the overrunning clutch (32), an outer ring of the overrunning clutch (32) is connected with a rotor shaft of the turbocharger (33), and the rotating speed sensor (34) is used for detecting the rotating speed of the turbocharger (33) and controlling the on-off of the electromagnetic valve (4).
2. The system for recovering and converting braking energy into turbine driving according to claim 1, wherein the eccentric hydraulic plunger pump (13) comprises a pump body (131), an eccentric shaft (132) and an oil distribution plate (133), one side of the pump body (131) is fixed on the caliper bracket (111), the oil distribution plate (133) is fixed on the other side of the pump body (131), the oil distribution plate (133) is provided with a low pressure channel (1331) and a high pressure channel (1332) which are parallel to each other, the middle part of the low pressure channel (1331) is communicated with the outer layer of the oil storage tank (21), the middle part of the high pressure channel (1332) is communicated with the inner layer of the oil storage tank (21), the two ends of the eccentric shaft (132) are rotatably connected to the middle part of the pump body (131), one end of the eccentric shaft (132) is in transmission connection with the friction wheel transmission assembly (12), the pump body (131) is provided with two symmetrical plunger cavities (1311), plunger bodies (134) are arranged in the two plunger cavities (1311), the two plunger bodies (134) are hinged to the eccentric shaft (132) respectively, two symmetrical partition passages (1312) are arranged in the pump body (131) corresponding to the two plunger cavities (1311), combination valves (135) are arranged in the two partition passages (1312) respectively, the two combination valves (135) are communicated with the plunger cavities (1311) respectively, one ends of the two partition passages (1312) are communicated with the two ends of the low-pressure passage (1331) correspondingly, and the other ends of the two partition passages (1312) are communicated with the two ends of the high-pressure passage (1332) correspondingly.
3. The system for recovering braking energy and converting the braking energy into turbine drive as claimed in claim 2, wherein the friction wheel transmission assembly (12) comprises a U-shaped wheel bracket (121), a first friction wheel (122), a second friction wheel (123) and a spline shaft (124), two ends of the wheel bracket (121) are fixed on the hydraulic brake assembly (11), the first friction wheel (122) and the second friction wheel (123) are both rotatably connected to the wheel bracket (121), the first friction wheel (122) is abutted with the second friction wheel (123), the first friction wheel (122) is abutted with the hydraulic brake assembly (11), the second friction wheel (123) is fixedly sleeved with a first bevel gear, one end of the spline shaft (124) is rotatably connected to the bottom end of the wheel bracket (121) and fixedly sleeved with a second bevel gear, the first conical gear and the second conical gear are meshed with each other, and the other end of the spline shaft (124) is sleeved at one end of the eccentric shaft (132).
4. The system for recovering and converting braking energy into turbine drive according to claim 3, wherein the hydraulic brake assembly (11) comprises a brake disc (112), a caliper body (113), a brake cylinder (114), a first brake pad (115) and a second brake pad (116), the caliper body (113) is disposed on an outer edge of the brake disc (112), a guide rod (117) is fixedly connected to one side of the caliper support (111), the caliper body (113) is sleeved on the guide rod (117), the guide rod (117) is further sleeved with a first return spring (118), two ends of the first return spring (118) abut against the caliper support (111) and the brake cylinder (113), a gap for providing a moving space for the brake cylinder (114) is disposed on one side of the caliper body (113) close to the caliper support (111), and the brake cylinder (114) is disposed in the gap, the output end of the brake cylinder (114) is fixedly connected with a floating plate (119), the first brake pad (115) is fixed to the other side of the floating plate (119), the second brake pad (116) is correspondingly fixed to the inner side face of the brake caliper body (113), two ends of the roller bracket (121) are fixed to one side of the floating plate (119), and the first friction wheel (122) movably penetrates through the floating plate (119) and the first brake pad (115).
5. The system for recovering braking energy and converting the braking energy into turbine driving according to claim 1, wherein the turbocharger (33) comprises a supercharger support (331), a compressor turbine (332) and an exhaust turbine (333), the compressor turbine (332) is fixed on one side of the supercharger support (331), the exhaust turbine (333) is fixed on the other side of the supercharger, one end of a rotor shaft of the compressor turbine (332) is in transmission connection with an outer ring of the overrunning clutch (32), the other end of the rotor shaft of the compressor turbine (332) is in transmission connection with a rotor shaft of the exhaust turbine (333), the hydraulic motor (31) is fixed on the supercharger support (331) through a motor support (35), and the supercharger rotation speed sensor (34) is fixed on the motor support (35) and is positioned below the overrunning clutch (32).
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| CN201911169577.4A CN110848020B (en) | 2019-11-26 | 2019-11-26 | System for recovering and converting braking energy into turbine drive |
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| CN115013280B (en) * | 2022-07-26 | 2023-12-05 | 绩溪山合机械有限公司 | Bearing reversing shaft of hydraulic pump accessory |
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