CN202300564U - Braking energy recovery system based on compressed air circulation of engine - Google Patents
Braking energy recovery system based on compressed air circulation of engine Download PDFInfo
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- CN202300564U CN202300564U CN201120453048XU CN201120453048U CN202300564U CN 202300564 U CN202300564 U CN 202300564U CN 201120453048X U CN201120453048X U CN 201120453048XU CN 201120453048 U CN201120453048 U CN 201120453048U CN 202300564 U CN202300564 U CN 202300564U
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- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 11
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- 238000000926 separation method Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 9
- 230000004913 activation Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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Abstract
The utility model relates to engine braking equipment and aims to provide a braking energy recovery system based on compressed air circulation of an engine. The system comprises an exhaust cam of the engine, an exhaust valve, a valve bridge, a high-pressure gas pipeline and an exhaust valve driving mechanism, wherein both ends of the high-pressure gas pipeline are connected to an air storage tank and an engine exhaust pipe or an exhaust branch pipe respectively; the exhaust valve driving mechanism comprises at least one rocker; the rocker consists of a level arm and a down-folding arm which are connected at an obtuse angle, and the joint is provided with a central shaft in a transverse manner; the rocker is movably connected with the central shaft; the central shaft is limited by at least one chute; and the exhaust valve driving mechanism comprises a joint state and a separation state. The braking energy recovery system can recover compressed air during braking, has an energy recovery function compared with the conventional exhaust auxiliary braking or engine braking, can effectively reduce the damage to primary brakes of vehicles, has greater braking force compared with the conventional exhaust auxiliary braking and can greatly improve the compression ratio and the control flexibility of exhaust braking.
Description
Technical field
The utility model relates to engine braking equipment, is specifically related to a kind of brake energy recovering system based on the engine compresses air circulation.
Background technique
Large vehicle needs stable and durable when long distance braking or lower long slope braking braking force is to keep vehicle safety.In order to alleviate the pressure of vehicle driving break, just need auxiliary braking system.Current have exhaust auxiliary braking system, Jacobs engine brake and various retarder to wait service vehicle i.e. braking slowly.But they all do not relate to braking energy and reclaim, and are simple a kind of auxiliary braking system of conduct, finally are that energy is dissipated in the atmosphere yet.And the exhaust auxiliary braking is to be employed in the form of arranging a butterfly valve on the exhaust manifold; Produce a throttling action when making engine exhaust; Thereby the generation engine brake force, but the existing problem of this setting type is that compressibility is low, and the braking force that produces usually is little.In order to make motor, and improve engine brake force at when braking recovered energy, must development one cover brake energy recovering system.
The model utility content
The technical problem that the utility model will solve is; Overcome deficiency of the prior art; A kind of brake energy recovering system based on the engine compresses air circulation is provided; This system can control engine operation in the pressurized air pattern when car brakeing, and the gas that engine compresses is produced is collected into gas holder.
Be the technical solution problem, the utility model is taked following technological scheme:
A kind of brake energy recovering system based on the engine compresses air circulation is provided, comprise exhaust cam and the exhaust valve and the air valve bridge of motor, and two ends is connected to the high-pressure gas pipeline of gas holder and engine exhaust pipe or exhaust branch pipe respectively; Also comprise the exhaust valve driving mechanism, this exhaust valve driving mechanism comprises at least one rocking arm; Said rocking arm is made up of horizontal arm that connects in obtuse angle and following folding arm, and the joint laterally runs through central shaft is set, rocking arm and central shaft flexible connection, and central shaft is spacing by at least one chute realization; Said exhaust valve driving mechanism has joint and throws off two states: when jointing state, the lower surface of horizontal arm engages with the upper surface of exhaust cam, and the end of following folding arm engages with the upper surface of exhaust valve and air valve bridge; When disengaged condition, horizontal arm does not all contact with exhaust valve and air valve bridge with cam, following folding arm.
As a kind of improvement, the position that the lower surface of horizontal arm is used for engaging with the upper surface of exhaust cam has arc transition, and is more steady when making mechanism and cam engagement.
As a kind of improvement, said high-pressure gas pipeline is connected to the outlet pipe or the exhaust branch pipe of cylinder, on the high-pressure gas pipeline near jointing, is provided with control valve; Be provided with the exhaust butterfly valve on outlet pipe after jointing or the exhaust branch pipe.
As a kind of improvement, said control valve is solenoid valve or one-way valve.
As a kind of improvement, said control valve and exhaust butterfly valve all are connected to electronic control unit through cable, are connected with cable between electronic control unit and the engine electric-controlled unit.
As a kind of improvement, said chute is provided with lock stop bit and following locking position.
As a kind of improvement, said central shaft is connected with a rocking arm return locking rod.Be used for when rocker arm body and exhaust valve disengaging, preventing that rocking arm from rotating above limiting position influence activation next time.
As a kind of improvement, an operating stem is connected in central shaft through leverage, and said exhaust valve driving mechanism is realized engaging to bottom offset when carrying on the operating stem, and said exhaust valve driving mechanism is realized throwing off to top offset when operating stem presses down.
As a kind of improvement, said operating stem is manual lever or electric operating bar.
The utility model is applicable to single cylinder or multicylinder engine, and motor is the four-stroke mode of operation, can be petrol engine or diesel engine, and the rocking arm quantity of exhaust valve driving mechanism is confirmed according to number of cylinders.The exhaust valve driving mechanism drives exhaust valve when brake energy recovering system starts.
The exhaust valve driving mechanism is different from the original Exhaust valve mechanism of motor, adopts a cover rocker arm body to add on original exhaust cam and exhaust valve and the air valve bridge.This mechanism does not activate when the motor proper functioning, only when brake energy recovering system starts, activate, and original exhaust valve driving mechanism is still effective during activation.This exhaust valve driving mechanism can drive exhaust valve and open exhaust valve in compression stroke and exhaust, in compression and exhaust two strokes, gas in the jar is pressed in the gas tank to store.A kind of mechanical structure is adopted in the activation of exhaust valve driving mechanism, promotes Exhaust valve mechanism through mechanical linkage and makes it to engage with exhaust cam, thereby realize the pneumatic braking energy recovery.Also can make exhaust valve driving mechanism and exhaust cam throw off closes compression air damping energy-recuperation system through drawing back mechanical linkage.
High-pressure gas pipeline is arranged on each exhaust branch pipe (single cylinder just has only outlet pipe, hereinafter no longer repeat statement), and the control valve on the pipeline is solenoid valve or one-way valve, break-make that can pilot line.Said high-pressure gas pipeline finally is communicated to gas holder.Exhaust branch pipe, exhaust butterfly valve and pressure duct and pipe-line control valve have just constituted auxiliary compression chamber.
The exhaust butterfly valve is a kind of automotive universal equipment, and it is arranged in each exhaust branch pipe, and after the high-pressure gas pipeline inlet.
Said electronic control unit controls is accepted driver's startup and shutdown signal, controls operation and the exhaust butterfly valve of exhaust valve driving mechanism, the switching of high-pressure gas pipe way solenoid valve simultaneously, and can with engine electric-controlled unit realization communication.
When vehicle needed auxiliary braking, the driver started this system, and motor oil spout and igniting are cut off in then above-mentioned exhaust valve driving mechanism work simultaneously, and the exhaust butterfly valve is closed in control, opens and closes the high-pressure gas pipeline control valve in good time.Under the driving of exhaust valve driving mechanism, motor is in the compression stroke later stage, and piston stroking upward compresses gas in the jar, and exhaust valve and high-pressure gas pipeline control valve are opened, and pressurized gas get into gas holder from exhaust branch pipe, high-pressure gas pipeline; In exhaust stroke, residual gas in the piston stroking upward compression cylinder, exhaust valve and high-pressure gas pipe way solenoid valve are opened, and gas in the jar gets into gas holder.At aspirating stroke and expansion stroke, the high-pressure gas pipeline control valve keeps shut.In intake process, when detecting auxiliary compression chamber internal pressure, system surpasses certain value greater than in-cylinder pressure, open the corresponding exhaust butterfly valve of this cylinder, open automatically to prevent exhaust valve.
The beneficial effect of the utility model is:
1, the utility model can reclaim pressurized air in braking, has compared more than traditional exhaust auxiliary braking or the engine braking function of an energy recovery.
2,, effectively reduce the infringement of vehicle's service, and compare the traditional exhaust auxiliary braking and have bigger braking force as a kind of auxiliary braking.
3, utilize the single cylinder single valve, promptly each inblock cylinder gas branch pipe is equipped with a butterfly valve, can improve the compression ratio and control flexibility of exhaust brake greatly.
Description of drawings
Fig. 1 is the utility model schematic diagram (embodiment adopts four cylinder engine, and the cylinder that only draws among the figure is as representational signal, and other cylinder is similar).
Fig. 2 is the utility model exhaust valve driving mechanism and activates structural scheme of mechanism.
Fig. 3 is exhaust valve driving mechanism and cam engagement schematic representation.
Fig. 4 is that exhaust valve driving mechanism and cam are thrown off schematic representation.
Fig. 5 is the utility model brake energy recovering system workflow schematic representation.
Reference character is among the figure:
1 engine intake manifold, 2 engine air casing walls, 3 pistons, 4 connecting rods, 5 cranks; 6 intake valves and air valve bridge, 7 exhaust valves and air valve bridge, 8 intake cams, 9 exhaust cams; 10 rocking arms, 11 central shafts, 12 each cylinder exhaust branch pipe, 13,14,15,16 are the exhaust butterfly valve; 17,18,19,20 control valves, 21 exhaust manifolds, 22 gas holder, 23 high-pressure gas pipelines; 24 levers, 25 operating stem, 26 leverage articulating points, 27 chutes, 28 rocking arm return locking rods; I be a certain cylinder code name.
Embodiment
Below accompanying drawings and embodiment are further specified the utility model.
The utility model system embodiment comprises parts such as a four cylinder engine, exhaust valve driving mechanism, high pressure gas storage system and electronic control unit.Wherein the exhaust valve driving mechanism adopts an other cover rocker arm body to add to (9 and 7 are general reference, have represented the exhaust cam and the exhaust valve bridge of all cylinders) on original exhaust cam 9 and exhaust valve and the air valve bridge 7.The exhaust valve driving mechanism does not activate when the motor proper functioning, only when brake energy recovering system starts, activate, and original exhaust valve driving mechanism is still effective during activation.The high pressure gas storage system comprises gas holder 22, high-pressure gas pipeline 23, control valve 17,18,19,20 and exhaust butterfly valve 13,14,15,16, and the function that has is under engine compresses air damping mode of operation, to store pressurized gas.The switching of electronic control unit controls high-pressure gas pipeline control valve 17,18,19,20 and exhaust butterfly valve 13,14,15,16, and physically being connected for electric wire with them, and can keep in communication between itself and the engine electric-controlled unit.
When vehicle during in the long distance braking of needs, the driver controls and activates the exhaust valve driving mechanism, makes each rocking arm and exhaust cam 9 and exhaust valve and air valve bridge 7 engage.The angular signal of engine crankshaft 5 is obtained in electronic control unit and engine electric-controlled unit communication simultaneously, obtains the stroke of every cylinder piston 3 according to the angular signal of bent axle 5.When bent axle 5 corners are judged as this cylinder piston 3 when being in compression stroke and exhaust stroke; The moment of in stroke, setting; The corresponding exhaust butterfly valve (13,14,15 or 16) of this cylinder of electronic control unit controls is in closed condition; Control the corresponding pipe-line control valve of this cylinder and open, pressurized gas gets into gas holder 22 through pipeline in the cylinder; When piston 3 is in exhaust stroke, be in closed condition at certain moment control unit control exhaust butterfly valve (13,14,15 or 16), and opening controlling valve (17,18,19 or 20), gas in the jar gets into gas holder 22; When piston 3 was in aspirating stroke and expansion stroke, control unit pilot line control valve (17,18,19 or 20) was in closed condition, prevented that gas gets in the cylinder again in the gas holder 22.In intake process, when detecting auxiliary compression chamber internal pressure, system surpasses certain value greater than in-cylinder pressure, open the corresponding exhaust butterfly valve (13,14,15 or 16) of this cylinder, the pressure in the compensated cavity is descended, open automatically to prevent exhaust valve.
Among Fig. 2, up mobile when driver's control operation bar 25, lever 24 clockwise rotates drive central shaft 11 and moves down; Make rocking arm 10 tops engage with exhaust cam 9; rocking arm 10 bottoms engage with exhaust valve and air valve bridge 7, thereby activate brake energy recovering system, effect is as shown in Figure 3.When driver's control operation bar 25 moves down, lever 24 rotates counterclockwise and makes rocking arm 10 break away from exhaust cams 9 and exhaust valve and air valve bridges 7, thereby closes brake energy recovering system, and effect is as shown in Figure 4.Said operating stem 25 can pass through driver's direct control, also can be through the electrical control means operation.
The situation that below only be directed to exhaust valve cam overhead, directly drives valve describes; Situation for the non-overhead of exhaust valve cam, non-direct driving valve or air valve bridge; Except that valve actuating mechanism carried out similar improvement, other brake energy recovering system device remained unchanged.Under this situation, cam 9 reclaims special-purpose exhaust valve driving mechanism rocking arm 10 with braking and does not directly drive air valve bridge.For the situation of single valve, need increase area to improving with tappet that cam directly contacts, guarantee that cam 9 and rocking arm 10 can drive valve.
Claims (9)
1. based on the brake energy recovering system of engine compresses air circulation, comprise exhaust cam, exhaust valve and the air valve bridge of motor, and two ends are connected to the high-pressure gas pipeline of gas holder and engine exhaust pipe or exhaust branch pipe respectively; It is characterized in that, also comprise the exhaust valve driving mechanism, this exhaust valve driving mechanism comprises at least one rocking arm; Said rocking arm is made up of horizontal arm that connects in obtuse angle and following folding arm, and the joint laterally runs through central shaft is set, rocking arm and central shaft flexible connection, and central shaft is spacing by at least one chute realization; Said exhaust valve driving mechanism has joint and throws off two states: when jointing state, the lower surface of horizontal arm engages with the upper surface of exhaust cam, and the end of following folding arm engages with the upper surface of exhaust valve and air valve bridge; When disengaged condition, horizontal arm does not all contact with exhaust valve and air valve bridge with cam, following folding arm.
2. brake energy recovering system according to claim 1 is characterized in that the position that the lower surface of horizontal arm is used for engaging with the upper surface of exhaust cam has arc transition.
3. brake energy recovering system according to claim 1 is characterized in that, said high-pressure gas pipeline is connected to the outlet pipe or the exhaust branch pipe of cylinder, on the high-pressure gas pipeline near jointing, is provided with control valve; Be provided with the exhaust butterfly valve on outlet pipe after jointing or the exhaust branch pipe.
4. brake energy recovering system according to claim 3 is characterized in that, said control valve is solenoid valve or one-way valve.
5. brake energy recovering system according to claim 3 is characterized in that, said control valve and exhaust butterfly valve all are connected to electronic control unit through cable, is connected with cable between electronic control unit and the engine electric-controlled unit.
6. according to the brake energy recovering system described in any one of the claim 1 to 5, it is characterized in that said chute is provided with lock stop bit and following locking position.
7. according to the brake energy recovering system described in any one of the claim 1 to 5, it is characterized in that said central shaft is connected with a rocking arm return locking rod.
8. according to the brake energy recovering system described in any one of the claim 1 to 5; It is characterized in that; An operating stem is connected in central shaft through leverage; Said exhaust valve driving mechanism is realized engaging to bottom offset when carrying on the operating stem, and said exhaust valve driving mechanism is realized throwing off to top offset when operating stem presses down.
9. brake energy recovering system according to claim 8 is characterized in that, said operating stem is manual lever or electric operating bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120453048XU CN202300564U (en) | 2011-11-15 | 2011-11-15 | Braking energy recovery system based on compressed air circulation of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120453048XU CN202300564U (en) | 2011-11-15 | 2011-11-15 | Braking energy recovery system based on compressed air circulation of engine |
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| Publication Number | Publication Date |
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| CN202300564U true CN202300564U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120453048XU Expired - Fee Related CN202300564U (en) | 2011-11-15 | 2011-11-15 | Braking energy recovery system based on compressed air circulation of engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434241A (en) * | 2011-11-15 | 2012-05-02 | 浙江大学 | Brake energy recycling system based on compressed air circulation of engine |
| TWI482904B (en) * | 2012-09-12 | 2015-05-01 | ||
| CN104454158B (en) * | 2014-10-29 | 2017-05-24 | 浙江大学 | Variable-stroke pneumatic internal combustion hybrid power engine and running method thereof |
| GB2591859A (en) * | 2020-02-06 | 2021-08-11 | Loghinescu Vasile | Method and device for recovering the kinetic energy produced during the braking process, for its reuse during the start-up process and for supercharging |
-
2011
- 2011-11-15 CN CN201120453048XU patent/CN202300564U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434241A (en) * | 2011-11-15 | 2012-05-02 | 浙江大学 | Brake energy recycling system based on compressed air circulation of engine |
| TWI482904B (en) * | 2012-09-12 | 2015-05-01 | ||
| CN104454158B (en) * | 2014-10-29 | 2017-05-24 | 浙江大学 | Variable-stroke pneumatic internal combustion hybrid power engine and running method thereof |
| GB2591859A (en) * | 2020-02-06 | 2021-08-11 | Loghinescu Vasile | Method and device for recovering the kinetic energy produced during the braking process, for its reuse during the start-up process and for supercharging |
| GB2591859B (en) * | 2020-02-06 | 2022-02-09 | Loghinescu Vasile | Method and device for recovering the kinetic energy produced during the braking process, for its reuse during the start-up process |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20201115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |