CN201496153U - Engine brake management system - Google Patents
Engine brake management system Download PDFInfo
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- CN201496153U CN201496153U CN2009200005724U CN200920000572U CN201496153U CN 201496153 U CN201496153 U CN 201496153U CN 2009200005724 U CN2009200005724 U CN 2009200005724U CN 200920000572 U CN200920000572 U CN 200920000572U CN 201496153 U CN201496153 U CN 201496153U
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- engine
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- gas
- valve
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- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to an engine brake management system, which comprises an air supply unit and an executing mechanism, wherein the gas supply unit comprises an air storage tank, a two-station tee magnetic valve component and a two-station tee air control valve, wherein the air storage tank provides the air source demanded for the whole system to work, the two-station tee magnetic valve component is composed of two two-station tee magnetic valves which are connected in parallel to control the system to connect or separate, the two-station tee air control valve is used as an air source switch of the executing mechanism to control the executing system to connect or separate, the executing mechanism comprises an oil stopping cylinder, an exhaust brake and an engine air discharge brake, wherein the oil stopping cylinder stops an oil inlet pipeline of an oil spraying pump, the exhaust brake provides constant back pressure demanded by the system, and the engine air discharge brake keeps the an engine exhaust valve constantly open. The engine brake management system manufacture an energy storage tank, the two-station tee magnetic valves and the two-station tee air control valve through integrating the oil stopping cylinder, the exhaust brake and the engine air discharge brake, greatly simplifies the structure of the engine brake system, and can improve the braking performance of the whole vehicle to the maximum.
Description
Technical field: the present invention relates to diesel engine braking technology field, be specifically related to a kind of brake managing system of engine, be called for short EBMS.By integrated modular, improve the braking force of car load to greatest extent.
Technical background: retarder is a kind of complemental brake system of vehicle (particularly heavy truck and motorbus), can be used for reducing Vehicle Speed or it is stabilized in certain safety speed scope, but vehicle is stopped.Use complemental brake system can significantly strengthen the vehicle braked performance, need not use or use less foundation brakes (traditional friction brake) just vehicle can be controlled in certain safety speed scope, the prevention car brakeing is malfunctioning, guarantee traffic safety, the Security when particularly strengthening the heavy-duty vehicle lower long slope.
Auxiliary brake device for automobile commonly used at present has exhaust brake, electric eddy current retarder and gas bleed brake of engine, wherein exhaust brake is simple in structure because of it, reliable performance, operation easily, easy for installation, he has obtained using widely as a kind of complemental brake system.The vehicle of present nearly all use auxiliary braking all is equipped with exhaust brake.But, can not satisfy the braking requirement under most of situation because the braking force of exhaust brake is less; The braking force maximum of electric eddy current retarder, but himself also needs to consume lot of energy, does not meet current requirements of saving energy; Gas bleed brake of engine is that a mechanism is installed above engine exhaust port, keeps exhaust valve often to open when needing braking, so that discharge the pressurized air in the firing chamber, increases its braking force.In order to reach best braking effect, all need to take two or more complemental brake system acting in conjunction in principle, so optimum scheme is being used in combination of exhaust brake and gas bleed brake of engine.But because each big main engine factory all is independent buying, install separately at present,, cause braking force to descend so be easy to not match mutually; Simultaneously when braking, at first to cut off the diesel oil supply,, equally also can cause the damage of motor if can not in time cut off the diesel oil supply during braking.
Summary of the invention: the objective of the invention is to integrate exhaust brake and gas bleed brake of engine resource, carry out centralized control and management, simplify the structure of engine braking system simultaneously, improve the braking ability of car load to greatest extent.
For achieving the above object, the present invention adopts following scheme:
Brake managing system of engine comprises air supply unit a and the b of actuator.
Described air supply unit comprises gas tank, two-position three way magnetic valve assembly and two-position three way Pneumatic valve; Described gas tank directly connects the car load source of the gas; Described two-position three way magnetic valve assembly is composed in parallel by two two-position three way magnetic valves; Described two-position three way magnetic valve assembly and the suction port of two-position three way Pneumatic valve are connected the air outlet of gas tank respectively, and the air outlet of described two-position three way magnetic valve connects the control mouth of two-position three way Pneumatic valve; The air outlet of described Pneumatic valve connects the suction port of each actuator respectively.
Described actuator comprises and stops oil cylinder, exhaust brake and gas bleed brake of engine; The described oil cylinder that stops comprises cylinder body, piston and return spring; Described exhaust brake comprises valve body, valve block, rotating shaft, rocking arm and cylinder, and the back pressure of its generation is constant adjustable; Described gas bleed brake of engine comprises housing, gas control switch, one-way valve and piston assembly; The working medium of described gas control switch is a pressurized air, and institute's control media is a motor low pressure lubricant oil.
Working principle of the present invention is, when needing braking, air supply unit a provides the b of actuator required high voltage control source of the gas, stop oil cylinder work and cut off the supply of motor diesel oil, the back pressure that relies on exhaust brake to produce, binding engine gas bleed brake, by keeping exhaust valve to continue to open a less aperture, reduce the gas in the firing chamber to the piston work, thereby reduced the rotating speed of motor, improved braking force; By integrated control system of stopping oil cylinder, exhaust brake and gas bleed brake of engine, simplified the structure of engine braking system greatly simultaneously, provided cost savings.
Description of drawings:
Fig. 1: implement schematic representation according to first of brake managing system of engine of the present invention;
Fig. 2: implement schematic representation according to second of brake managing system of engine of the present invention.
Embodiment:
The present invention is described in further detail below in conjunction with accompanying drawing.
One, the working principle of each several part
1, gas tank
The needed air pressure energy of savings system works has enough energy to guarantee that system starts rapidly.
2, two-position three way magnetic valve assembly
Under the free state, piston 25 and 25 ' moves down, and suction port 21 and 21 ' is closed, and air outlet 22 and 22 ' is connected with relief opening 23 and 23 ' respectively, and the air pressure of output is discharged into the atmosphere by 23 and 23 ' respectively.During work, move on the piston 25 and 25 ', relief opening 23 and 23 ' is closed, and high-pressure air overcomes the pressure of air inlet spring by solenoid valve, and 22 and 22 ' flows out from the air outlet.
3, two-position three way Pneumatic valve
Under the free state, air outlet 321,322 and 323 and relief opening 33 connect, the air pressure of output is discharged into the atmosphere by 33 mouthfuls.During work, imported by control mouth 34 from the air pressure that two-position three way magnetic valve comes, promote piston 35 and move down, connect suction port 31 and air outlet 321,322 and 323, the air pressure of output arrives respectively and stops oil cylinder 4, exhaust brake 5 and gas bleed brake of engine 6.
4, stop oil cylinder
Stop oil cylinder and be fixed on the motor, be connected with Injection Pump oil-feed switch.During system works, work when air pressure reaches the relief valve pressure of its suction port, close the oil-feed switch, motor is in and stops oil condition.Fuel feeding recovers after removing working state immediately in system.
5, exhaust brake
Exhaust brake is installed on the engine exhaust pipe.Close the outlet pipe passage during system works, set up constant exhaust back pressure, make motor do negative work, absorb vehicle energy because of exhaust resistance.
6, gas bleed brake of engine
Gas bleed brake of engine is installed on engine cylinder and covers, and the push rod of working piston assembly contacts with exhaust valve.
611 mouthfuls connect 321, the 601 mouthfuls of sending and receiving motivations oil pump outlet of two-position three way Pneumatic valve air outlet.Adjust stop screw 66, with nut 65 stop screw 66 is locked in promptly fixed position after making working piston assembly 63 be in correct position.
During work, 611 mouthfuls of input air pressures promote pneumatic piston 612 and move down, and open filler opening 601, close oil drain out 614, hydraulic oil is opened ball valve 622 then from 602 mouthfuls of outputs, enters working piston assembly 63 tops, promoting it moves down and backs down exhaust valve, make the indoor pressurized air of engine combustion be in releasing state always, can not do positive work, four strokes all are in the state that energy is done negative work that absorbs.
Two, the working procedure of system
When vehicle need slow down, by pulling the control switch that is arranged in the operator cabin, make two-position three way magnetic valve assembly 2 work output pressures, arrive the control mouth 34 of two-position three way Pneumatic valve 3, thereby promote piston and move down connection suction port and air outlet, the pressurized air of big flow flows out from the air outlet, arrives the control mouth that stops oil cylinder, exhaust brake and gas bleed brake of engine respectively.Stop the piston reach of oil cylinder, close the oil-feed switch, thereby cut off the supply of motor diesel oil.The control cylinder piston 55 of exhaust brake moves forward under gas pressure, rotates thereby drive rocking arm, and rotating shaft is rotated with rocking arm, rotates thereby drive valve block, closes outlet pipe and sets up constant exhaust back pressure.The piston 612 of the gas control switch 61 of gas bleed brake of engine moves down under compressed-air actuated effect, driving guiding valve 613 moves down together, thereby close oil outlet 602 ', open filler opening 602, low pressure lubricant oil is just according to this by 601,602 arrive one-way valve 62, lubricant oil overcomes the active force of pressure spring 621, back down ball valve 622 and arrive oil duct 603, exhaust stroke at motor, working piston assembly 63 moves down with exhaust valve, open exhaust valve, lubricant oil also has been full of the working piston chamber simultaneously, at the exhaust stroke end, exhaust valve has the trend of cutting out under the effect of exhaust valve spring, this moment, ball valve 622 was closed oil inlet hole under the effect of return spring 621, just formed the zone of high pressure like this between ball valve and working piston assembly, thereby stoped exhaust valve closing, make it keep a less aperture, thereby make the indoor pressurized air of engine combustion be in releasing state always, can not do positive work, four strokes all are in the state that energy is done negative work that absorbs.
When the needs brake off, close the control switch in the operator cabin, the solenoid valve outage, 21 and 21 ' closes, 23 and 23 ' opens, thereby discharges the air pressure of air outlet 22 and 22 ', the piston 35 of two-position three way Pneumatic valve return under the effect of return spring, thereby close suction port 31, open relief opening 33, discharge the air pressure of output, thereby make each parts self-return under the effect of return spring separately of actuator, braking is removed, and motor rotates back into normal acting state.
Fig. 2 is the simplified structure of Fig. 1, the effect of the parts of each identical numbering is all identical, has cancelled gas tank, and the two-position three way magnetic valve assembly changes an independent two-position three way magnetic valve into, the two-position three way Pneumatic valve is also replaced by relay valve, and its structural principle and working procedure are identical with Fig. 1.
Claims (8)
1. a brake managing system of engine comprises air supply unit a and the b of actuator, it is characterized in that: described air supply unit comprises gas tank, two-position three way magnetic valve assembly and two-position three way Pneumatic valve; Described gas tank directly connects the car load source of the gas; Described two-position three way magnetic valve assembly is composed in parallel by two two-position three way magnetic valves; Described two-position three way magnetic valve assembly and the suction port of two-position three way Pneumatic valve are connected the air outlet of gas tank respectively, and the air outlet of described two-position three way magnetic valve connects the control mouth of two-position three way Pneumatic valve; The air outlet of described Pneumatic valve connects the air pressure control mouth of each actuator respectively; Described actuator comprises and stops oil cylinder, exhaust brake and gas bleed brake of engine; The described oil cylinder that stops comprises cylinder body, piston and return spring; Described exhaust brake comprises valve body, valve block, rotating shaft, rocking arm and cylinder, and the back pressure of its generation is constant adjustable; Described gas bleed brake of engine comprises housing, gas control switch, one-way valve and piston assembly; The working medium of described gas control switch is a pressurized air, and institute's control media is a motor low pressure lubricant oil.
2. brake managing system of engine according to claim 1 is characterized in that: the air outlet of two-position three way Pneumatic valve (321,322,323) connect respectively and stop oil cylinder (4), constant voltage exhaust brake (5) and gas bleed brake of engine (6).
3. brake managing system of engine according to claim 1 is characterized in that: gas supply mechanism is made an independently module.
4. brake managing system of engine according to claim 1 is characterized in that: the structure of stopping oil cylinder (4), exhaust brake (5) and gas bleed brake of engine (6) is separate.
5. brake managing system of engine according to claim 1 is characterized in that: one-way valve (62) typically is made up of a steel ball (622) and pressure spring (621).
6. brake managing system of engine according to claim 1 is characterized in that: the control media of gas control switch is a pressurized air, and the control air pressure range is 0.3-1MPa.
7. brake managing system of engine according to claim 1, it is characterized in that: the gas control switch is by a filler opening (601), an oil outlet (602), a return opening (602 ') and an oil drain out (614) add an air pressure control mouthful (611) in addition and form.
8. brake managing system of engine according to claim 1 is characterized in that: the gas control switch is a Normally closed type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200005724U CN201496153U (en) | 2009-01-08 | 2009-01-08 | Engine brake management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200005724U CN201496153U (en) | 2009-01-08 | 2009-01-08 | Engine brake management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496153U true CN201496153U (en) | 2010-06-02 |
Family
ID=42439361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200005724U Expired - Fee Related CN201496153U (en) | 2009-01-08 | 2009-01-08 | Engine brake management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496153U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383946A (en) * | 2011-07-06 | 2012-03-21 | 潍柴动力股份有限公司 | Exhaust braking device, engine system and automobile |
| CN102392745A (en) * | 2011-09-29 | 2012-03-28 | 潍柴动力股份有限公司 | Exhausting braking system |
| CN102853112A (en) * | 2012-10-09 | 2013-01-02 | 瑞立集团瑞安汽车零部件有限公司 | Pressure regulation type two-station three-way pneumatic control valve |
-
2009
- 2009-01-08 CN CN2009200005724U patent/CN201496153U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383946A (en) * | 2011-07-06 | 2012-03-21 | 潍柴动力股份有限公司 | Exhaust braking device, engine system and automobile |
| CN102383946B (en) * | 2011-07-06 | 2013-12-11 | 潍柴动力股份有限公司 | Exhaust braking device, engine system and automobile |
| CN102392745A (en) * | 2011-09-29 | 2012-03-28 | 潍柴动力股份有限公司 | Exhausting braking system |
| CN102392745B (en) * | 2011-09-29 | 2014-05-28 | 潍柴动力股份有限公司 | Exhausting braking system |
| CN102853112A (en) * | 2012-10-09 | 2013-01-02 | 瑞立集团瑞安汽车零部件有限公司 | Pressure regulation type two-station three-way pneumatic control valve |
| CN102853112B (en) * | 2012-10-09 | 2014-09-03 | 瑞立集团瑞安汽车零部件有限公司 | Pressure regulation type two-station three-way pneumatic control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20110108 |