CN106089350A - Electromotor two cycle compression release type brake device and braking method thereof - Google Patents
Electromotor two cycle compression release type brake device and braking method thereof Download PDFInfo
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- CN106089350A CN106089350A CN201610401939.8A CN201610401939A CN106089350A CN 106089350 A CN106089350 A CN 106089350A CN 201610401939 A CN201610401939 A CN 201610401939A CN 106089350 A CN106089350 A CN 106089350A
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- piston
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- tappet
- oil
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
- F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
Abstract
The invention discloses a kind of electromotor two cycle compression release type brake device and braking method thereof.The inlet valve of electromotor can be again turned on air inlet at expansion stroke, and exhaust valve exhaust stroke close at the end of the compressed gas that is again turned in release cylinder.The compression-release type braking of two strokes can be realized, it is obtained in that higher braking power, and the braking power of actual output can be controlled by the aperture of regulation air throttle according to the actual requirements, the brake device structure of the present invention is simple, and the maximum opening of exhaust valve when can determine braking by controlling the position of the second relay piston at the beginning of design, when preventing from braking, exhaust valve collides with piston, controls the maximum brake power that electromotor is capable of simultaneously.
Description
Technical field
The present invention relates to a kind of engine braking apparatus and braking method thereof, send out it is more particularly related to a kind of
Motivation two cycle compression release type brake device and braking method thereof.
Background technology
Engine braking apparatus is a kind of auxiliary brake of vehicle, and it utilizes the pump gas of engine breathing process to damage
Mechanical loss in mistake, the work done during compression of compression stroke consumption and work process forms braking action to driving wheel, the system obtained
Kinetic power is stable, can efficiently reduce service brake when long descending for reducing and control the average overall travel speed of automobile
Overheated and the abrasion that system produces due to long continuous operation, improves the service life of brake, strengthens the safety that vehicle travels
Property.
At present conventional engine braking apparatus is broadly divided into exhaust, leakage type and compression-release type three class, and wherein
Braking ability with engine compresses release type brake device is best, and its braking power produced and electromotor are normally carried out driving
Rated power during work is the most suitable.In published engine compresses release type brake device structure, engine exhaust
Door engine compression strokes close at the end of open, release compression top center compressed gas, this Partial shrinkage merit be pressure
The main source of contracting release type brake device braking work, and the expansion stroke of electromotor and the produced system of exhaust stroke later
Dynamic merit is only a small amount of mechanical loss and discharge loss.If the inlet valve of electromotor can be again turned on air inlet at expansion stroke,
And exhaust valve exhaust stroke close at the end of the compressed gas that is again turned in release cylinder, then can be in existing compression release
Reentry on the basis of formula brake unit braking work a work done during compression, promote maximum brake power further, meet vehicle bigger
In the range of braking requirement.
Summary of the invention
It is an object of the invention to provide a kind of electromotor two cycle compression release type that can produce higher braking power
Brake unit and braking method thereof, to meet vehicle braking requirement in larger scope.
For solving above-mentioned technical problem, the present invention is achieved through the following technical solutions:
A kind of electromotor two cycle compression release type brake device, differs the cylinder of 360 ° including at least two angle of ignition,
Cylinder has valve cam, valve rocker, rocker arm bracket, valve, air flue, electromagnetic valve and lubricating oil pump, rocker arm bracket is provided with often
The first active piston that cylinder intake valve rocking arm is corresponding, the second active piston, the first relay piston and with every cylinder exhaust valve rocker
The second corresponding relay piston, is provided with main oil gallery, controls oil duct, primary control spool, sub-control spool and connection in rocker arm bracket
The first oil duct, the second oil duct, the first check valve and the second check valve between active piston and relay piston；The inlet valve of cylinder
Rocking arm valve end is provided with projection, and protruding same first active piston, the second active piston connect, and inlet valve rocker tappet end is provided with convex
Rising, protruding same first relay piston connects, and exhaust valve rocker tappet end is provided with projection, and protruding same second relay piston connects；Enter
Valve rocker tappet end tappet plunger shaft is connected with main oil gallery by the oilhole being opened on inlet valve rocker tappet end；Exhaust valve
Rocking arm tappet end tappet plunger shaft is connected with main oil gallery through exhaust valve rocker internal oil channel, control piston, controls piston built with multiple
Position spring, back-moving spring one end connects with controlling piston, and the other end connects with spring base, controls piston and is provided with annular recessed vertically
Groove, controls the non-opening of piston and is connected with controlling oil duct；First active piston is through the second oil duct, the second check valve and main control valve
Core differs the first relay piston of another cylinder of 360 ° and is connected, between primary control spool is provided with vertically with this cylinder spark angle
Every the oilhole radially got through arranged and annular groove, oilhole communicates with main oil gallery through the internal axially oil duct of primary control spool,
The non-opening of primary control spool is connected with controlling oil duct；Second active piston is through the first oil duct, the first check valve and same cylinder
The second relay piston be connected, the first oil duct between the second active piston and the second relay piston of same cylinder is controlled by pair
Spool processed is connected with main oil gallery, and sub-control spool is provided with annular groove, the non-opening of sub-control spool and control oil duct vertically
It is connected；Second relay piston side wall surface top position is provided with oil leak hole；The oil-feed nose end of all check valves is all connected with main oil gallery.
Described control oil duct is connected with lubricating oil pump through electromagnetic valve.
The inlet valve of described cylinder has intake advance angle.
It is provided with air throttle on the air intake duct of described cylinder.
The braking method of described electromotor two cycle compression release type brake device comprises the steps:
1) during braking, engine stop oil spout is lighted a fire, valve cam proper motion, solenoid valves, and lubricating oil pump drives and makes
Controlling oil duct oil-feed, machine oil promotes the control piston in primary control spool, sub-control spool and exhaust valve rocker respectively along each
From move axially, the annular groove on primary control spool connects with oil duct junction, the first active piston with this cylinder spark angle
The second oil duct between first relay piston of another cylinder differing 360 ° is closed, and the first active piston is to this cylinder spark
The driving function of the first relay piston that angle differs another cylinder of 360 ° comes into force；The sidewall of sub-control spool and oil duct junction phase
Connecing, the first oil duct between the second active piston and the second relay piston of same cylinder is closed, and the second active piston is to same
The driving function of the second relay piston of cylinder comes into force；The annular groove controlled on piston in exhaust rocker arm and exhaust valve rocker
The oil duct junction of internal oil channel connects, and the exhaust valve rocker internal oil channel between exhaust valve rocker tappet end tappet plunger shaft and main oil gallery is even
Logical, during exhaust valve rocker tappet end tappet piston upwards, machine oil is lived to main oil gallery draining, exhaust valve rocker tappet end tappet
Plug drives exhaust rocker arm motor function to lose efficacy；
When one cylinder of electromotor is in exhaust stroke latter stage, differ with this cylinder spark angle at another cylinder of 360 °
Compression stroke latter stage, now this cylinder intake valve being in exhaust stroke latter stage is opened, and lasts till its induction stroke, and it enters
Press under valve rocker valve end, drive the first active piston, the second active piston to move downward；It is in the gas in exhaust stroke latter stage
First active piston of cylinder drives the first relay piston of the cylinder being in compression stroke latter stage to move upward, and promotes and is in compression
Pressing under the inlet valve rocker valve end of the cylinder in stroke latter stage, the cylinder intake valve being in compression stroke latter stage is opened, and continues
To its expansion stroke, its first active piston, the second active piston move downward；Be in compression stroke latter stage cylinder second
Active piston drives the second relay piston of same cylinder to move upward, and promotes and presses under exhaust valve rocker valve end, is in compression
The inblock cylinder valve opening in stroke latter stage, and last till its expansion stroke；Be in exhaust stroke latter stage cylinder second actively
Piston drives the second relay piston of same cylinder to move upward, and promotes and presses under exhaust valve rocker valve end, is in exhaust stroke
The inblock cylinder valve opening in latter stage, and last till its induction stroke；First oil duct pass through the first check valve replenisher force feed, second
Oil duct passes through the second check valve replenisher force feed；Therefore, the inlet valve of cylinder is opened in induction stroke and expansion stroke
Air inlet, exhaust valve opens aerofluxus latter stage in compression stroke latter stage and exhaust stroke, it is achieved two cycle compression release brakings；
2) when need not braking, electromagnetic valve power-off, control oil duct draining, primary control spool, sub-control spool and aerofluxus
Control piston playback in door rocking arm, the oilhole that the radial direction on primary control spool is got through connects with oil duct junction, the first active piston
The second oil duct between first relay piston of another cylinder differing 360 ° with this cylinder spark angle connects with main oil gallery, the
The driving disabler of the first relay piston of one active piston another cylinder to differing 360 ° with this cylinder angle of ignition；Sub-control
Annular groove on spool connects with oil duct junction, the first oil between the second active piston and the second relay piston of same cylinder
Road connects with main oil gallery, the driving disabler to the second relay piston of same cylinder of second active piston；Exhaust valve rocker
The sidewall of interior control piston connects with the oil duct junction of exhaust valve rocker internal oil channel, and exhaust valve rocker tappet end tappet plunger shaft is sealed
Closing, exhaust valve rocker tappet end tappet piston drives exhaust valve rocker motor function to come into force；Now engine work.
During described braking, the first relay piston moves upward, and drives inlet valve rocker tappet end to move upward, main oil gallery
Interior machine oil is entered in inlet valve rocker tappet end tappet plunger shaft by the oilhole being opened on inlet valve rocker tappet end, makes
Inlet valve rocker tappet end tappet piston moves downward, it is to avoid inlet valve rocker tappet end tappet piston divides with inlet valve tappet
From.
During described braking, the second relay piston moves upward, and drives exhaust valve rocker tappet end to move upward, main oil gallery
Interior machine oil enters in exhaust valve rocker tappet end tappet plunger shaft by the annular groove controlled on piston in exhaust rocker arm,
Exhaust valve rocker tappet end tappet piston is made to move downward, it is to avoid exhaust valve rocker tappet end tappet piston divides with exhaust valve lifter
From.
During described braking, the second relay piston moves upward, and the oil leak hole to its side wall surface connects with camshaft cover inner chamber
Time logical, the machine oil in the second relay piston working chamber is to camshaft cover inner chamber draining so that the second relay piston position keeps not
Become, it is impossible to promote exhaust valve rocker further, and then make exhaust valve during braking keep relatively small guide vane, form pumping loss, with
Time prevent exhaust valve from colliding with cylinder piston.
During described braking, the air inflow of cylinder can be controlled by the aperture of the air throttle on regulation air intake duct,
And then control braking work.
Compared with prior art, it is an advantage of the invention that the compression-release type that can realize two strokes is braked, it is possible to obtain
Higher braking power, and the braking power of actual output can be carried out by the aperture of regulation air throttle according to the actual requirements
Controlling, the brake device structure of the present invention is simple, and can be by controlling the position of the second relay piston at the beginning of design
The maximum opening of exhaust valve when determining braking, when preventing from braking, exhaust valve collides with piston, and control electromotor can simultaneously
The maximum brake power realized.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the inventive engine two non-brake state of cycle compression release type brake device.
Fig. 2 is the exhaust valve rocker non-brake state cross-sectional view along A-A direction of the present invention.
Fig. 3 is the cross-sectional view of inventive engine two cycle compression release type brake device on-position.
Fig. 4 is the exhaust valve rocker on-position cross-sectional view along A-A direction of the present invention.
Fig. 5 is that the inlet valve rocker of the present invention is along B-B, B ' cross-sectional view in-B ' direction.
In figure, reference is: the second relay piston 101；Oil leak hole 102；Exhaust valve 103；Exhaust valve rocker 104；Aerofluxus
Door rocking arm internal oil channel 105；Control piston 106；Exhaust valve rocker tappet end tappet plunger shaft 107；Exhaust valve rocker tappet end is very
Column piston 108；Oilhole 109；Inlet valve rocker tappet end tappet plunger shaft 110；Inlet valve rocker tappet end tappet piston 111；
Inlet valve rocker 112；First relay piston 113；First active piston 114；Inlet valve 115；Spring base 116；Back-moving spring
117；Annular groove 118；Sidewall 119；Second active piston 120；Exhaust valve 201；Exhaust valve rocker 202；Second relay piston
203；First relay piston 204；Inlet valve rocker 205；First active piston 206；Inlet valve 207；Second active piston 208；
First oil duct 301；First check valve 302；Main oil gallery 303；Sub-control spool 304；Annular groove 305；Sidewall 306；Control oil
Road 307；Rocker arm bracket 308；Second check valve 309；Second oil duct 310；Oilhole 311；Primary control spool 312；Axially oil duct 313；
Annular groove 314.
Detailed description of the invention
Firstly, it is necessary to explanation, present invention can be suitably applied to include that the cylinder of at least two angle of ignition difference 360 ° is many
Cylinder engine.Below as a example by two cylinder, in conjunction with accompanying drawing, the present invention is described in further detail, but not as to this
Bright restriction.
In the present embodiment, the structural representation of electromotor two cycle compression release type brake device is as shown in Figures 1 to 5, bag
Including the angle of ignition and differ a cylinder and the two cylinder of 360 °, cylinder has valve cam, valve rocker, rocker arm bracket 308, valve, air flue, electricity
Magnet valve and lubricating oil pump, rocker arm bracket 308 is provided with the first active piston connected with a cylinder intake valve rocking arm 112 valve end projection
114, the first relay piston 113 and cylinder that the second active piston 120 connects with a cylinder intake valve rocking arm 112 tappet end projection
The second relay piston 101 that exhaust valve rocker 104 tappet end projection connects, with two cylinder inlet valve rocker 205 valve end projection phase
First active piston the 206, second active piston 208 connect connect with two cylinder inlet valve rocker 205 tappet end projection first from
The second relay piston 203 that dynamic piston 204 connects with two cylinder exhaust valve rocker 202 tappet end projection, is provided with in rocker arm bracket 308
Main oil gallery 303, control oil duct 307, primary control spool 312, sub-control spool 304 and connect active piston and relay piston it
Between the first oil duct the 301, second oil duct the 310, first check valve 302 and the second check valve 309；One cylinder intake valve rocking arm tappet end
Tappet plunger shaft 110 is connected with main oil gallery 303 by the oilhole 109 being opened on inlet valve rocker tappet end；One cylinder exhaust valve
Rocking arm tappet end tappet plunger shaft 107 is connected with main oil gallery 303 with controlling piston 106 through exhaust valve rocker internal oil channel 105, controls
Piston 106 is built with back-moving spring 117, and back-moving spring 117 one end connects with controlling piston 106, the other end and spring base 116 phase
Connect, control piston 106 and be provided with annular groove 118 vertically, control the non-opening of piston 106 and be connected with controlling oil duct 307；One cylinder
First active piston 114 differs with this cylinder spark angle through second oil duct the 310, second check valve 309 and primary control spool 312
First relay piston 204 of the two cylinder of 360 ° is connected, and primary control spool 312 is provided with vertically spaced apart radially to be got through
Oilhole 311 and annular groove 314, oilhole 311 communicates with main oil gallery 303 through the internal axially oil duct 313 of primary control spool 312, main
Control the non-opening of spool 312 and be connected with controlling oil duct 307；One cylinder the second active piston 120 is single through the first oil duct 301 and first
Being connected with the second relay piston 101 of a cylinder to valve 302, the first oil duct 301 between the two is by sub-control spool 304 and master
Oil duct 303 is connected, and sub-control spool 304 is provided with annular groove 305, the non-opening of sub-control spool 304 and control oil vertically
Road 307 is connected；One cylinder the second relay piston 101 side wall surface top position is provided with oil leak hole 102；First check valve 302, second is single
All it is connected with main oil gallery 303 to the oil-feed nose end of valve 309.
Described control oil duct 307 is connected with lubricating oil pump through electromagnetic valve.
The inlet valve 115 of described cylinder has intake advance angle, and (aerofluxus punching arrives before upper dead canter close to end of a period piston and opens
Begin to open).
It is provided with air throttle on the air intake duct of described cylinder.
The structure of two cylinder and oil circuit and a cylinder are identical.
In the present embodiment, the braking method of electromotor two cycle compression release type brake device is as follows:
1) refering to shown in Fig. 3 to Fig. 5, during braking, engine stop oil spout is lighted a fire, valve cam proper motion, electromagnetic valve
Energising, lubricating oil pump drives and makes control oil duct 307 oil-feed, and machine oil promotes primary control spool 312, sub-control spool 304 and a cylinder
Control piston 106 in exhaust valve rocker 104 moves axially along respective respectively, the annular groove 314 on primary control spool 312
Connecting with oil duct junction, cylinder first active piston 114 differs the first relay piston of the two cylinder of 360 ° with this cylinder spark angle
The second oil duct 310 between 204 is closed, and cylinder first active piston 114 is to the two cylinder with this cylinder spark angle difference 360 °
The driving function of the first relay piston 204 comes into force；The sidewall 306 of sub-control spool 304 connects with oil duct junction, and a cylinder second is actively
The first oil duct 301 between piston 120 and the second relay piston 101 of a cylinder is closed, and cylinder second active piston 120 is to a cylinder
The driving function of the second relay piston 101 come into force；The annular groove 118 controlled on piston 106 in one cylinder exhaust rocker arm 104
Connect with the oil duct junction of exhaust valve rocker internal oil channel 105, cylinder exhaust valve rocker tappet end tappet plunger shaft 107 and a main oil gallery
Exhaust valve rocker internal oil channel 105 between 303 connects, and a cylinder exhaust valve rocker tappet end tappet piston 108 moves upward opportunity
Oil is to main oil gallery 303 draining, and a cylinder exhaust valve rocker tappet end tappet piston 108 drives exhaust rocker arm 104 motor function to lose efficacy；
Now a cylinder braking function is activated, and two cylinder braking function Activiation method and a cylinder are identical；
When electromotor one cylinder is in exhaust stroke latter stage, the two cylinder differing 360 ° with this cylinder spark angle is in compression punching
Journey latter stage, now this cylinder intake valve 115 being in exhaust stroke latter stage is opened, and lasts till a cylinder induction stroke, and a cylinder enters
Press under valve rocker 112 valve end, drive cylinder the first active piston 114, second active piston 120 to move downward；The row of being in
First active piston 114 of one cylinder in gas stroke latter stage drives the first relay piston 204 of the two cylinder being in compression stroke latter stage
Moving upward, promote and press under inlet valve rocker 205 valve end of two cylinder, two cylinder intake valves 207 being in compression stroke latter stage are opened
Opening, and last till two cylinder expansion stroke, two cylinder the first active piston the 206, second active piston 208 moves downward；It is in compression
Second active piston 208 of the two cylinder in stroke latter stage drives the second relay piston 203 of two cylinder to move upward, and promotes two cylinder aerofluxus
Pressing under door rocking arm 202 valve end, the two cylinder exhaust valve 201 being in compression stroke latter stage is opened, and lasts till two cylinder expansion stroke；
Second active piston 120 of the cylinder being in exhaust stroke latter stage drives the second relay piston 101 of a cylinder to move upward, and promotes
Pressing under one cylinder exhaust valve rocker 104 valve end, the cylinder exhaust valve 103 being in exhaust stroke latter stage is opened, and lasts till a cylinder
Induction stroke；During braking, the first oil duct 301 is led to by the first check valve 302 replenisher force feed, the second oil duct 310
Cross the second check valve 309 replenisher force feed；When electromotor two cylinder is in exhaust stroke latter stage, the implementation process of brake unit with
One cylinder is in during exhaust stroke identical, therefore, the inlet valve of cylinder can induction stroke and expansion stroke open into
Gas, exhaust valve can open aerofluxus latter stage in compression stroke latter stage and exhaust stroke, it is achieved two cycle compression release brakings；
2) refering to shown in Fig. 1, Fig. 2, Fig. 5, when need not braking, electromagnetic valve power-off, control oil duct 307 draining, master control
Control piston 106 in spool 312 processed, sub-control spool 304 and exhaust valve rocker 104 playbacks, the footpath on primary control spool 312
Connecting with oil duct junction to the oilhole 311 got through, cylinder first active piston 114 differs the two cylinder of 360 ° with this cylinder spark angle
The first relay piston 204 between the second oil duct 310 connect with main oil gallery 303, cylinder first active piston 114 is to this cylinder
The angle of ignition differs the driving disabler of the first relay piston 204 of the two cylinder of 360 °；Annular groove on sub-control spool 304
305 connect with oil duct junction, the first oil duct 301 between cylinder second active piston 120 and the second relay piston 101 of a cylinder with
Main oil gallery 303 connects, the cylinder second active piston 120 driving disabler to the second relay piston 101 of a cylinder；One cylinder row
The sidewall 119 controlling piston 106 in valve rocker 104 connects with the oil duct junction of exhaust valve rocker internal oil channel 105, a cylinder exhaust valve
Rocking arm tappet end tappet plunger shaft 107 is closed, and a cylinder exhaust valve rocker tappet end tappet piston 108 drives exhaust valve rocker 104
Motor function comes into force；Now a cylinder braking function is closed, and two cylinder braking function method for closing and a cylinder are identical, and electromotor is normal
Work.
During described braking, cylinder first relay piston 113 moves upward, and drives a cylinder intake valve rocking arm 112 tappet end
Moving upward, the machine oil in main oil gallery 303 enters a cylinder by the oilhole 109 being opened on a cylinder intake valve rocking arm tappet end and enters
In valve rocker tappet end tappet plunger shaft 110, a cylinder intake valve rocking arm tappet end tappet piston 111 is made to move downward, it is to avoid
One cylinder intake valve rocking arm tappet end tappet piston 111 separates with inlet valve tappet；Two cylinder inlet valve rocker tappet end tappet piston
Method anti-detachment with inlet valve tappet is identical with a cylinder.
During described braking, cylinder second relay piston 101 moves upward, and drives a cylinder exhaust valve rocker 104 tappet end
Moving upward, the machine oil in main oil gallery 303 is entered by the annular groove 118 controlled on piston 106 in a cylinder exhaust rocker arm 104
Enter in a cylinder exhaust valve rocker tappet end tappet plunger shaft 107, make a cylinder exhaust valve rocker tappet end tappet piston 108 transport downwards
Dynamic, it is to avoid a cylinder exhaust valve rocker tappet end tappet piston 108 separates with exhaust valve lifter；Two cylinder exhaust valve rocker tappet end is very
Column piston method anti-detachment with exhaust valve lifter is identical with a cylinder.
During described braking, cylinder second relay piston 101 moves upward, to oil leak hole 102 and the cam of its side wall surface
When shaft-cup inner chamber is connected, the machine oil in cylinder the second relay piston 101 working chamber is to camshaft cover inner chamber draining so that a cylinder the
Two relay piston 101 positions keep constant, it is impossible to promote further a cylinder exhaust valve rocker 104, and then cylinder when making braking
Exhaust valve 103 keeps relatively small guide vane, forms pumping loss, prevents the cylinder exhaust valve 103 from colliding with cylinder piston simultaneously；Two
Cylinder exhaust valve keeps identical with a cylinder compared with the method for small guide vane.
During described braking, the air inflow of cylinder can be controlled by the aperture of the air throttle on regulation air intake duct,
And then control braking work.
For multicylinder engine, if it comprises at least two angle of ignition differs the cylinder of 360 °, then to wherein each two
The angle of ignition differs the cylinder of 360 °, all can use above-mentioned brake unit and braking method, it is achieved two cycle compression release type brakings.
Finally, it should also be noted that disclosed above is only the specific embodiment of the present invention.The ordinary skill people of this area
All deformation that member can directly derive from present disclosure or associate, are all considered as protection scope of the present invention.
Claims (9)
1. an electromotor two cycle compression release type brake device, differs the cylinder of 360 °, gas including at least two angle of ignition
Cylinder has valve cam, valve rocker, rocker arm bracket (308), valve, air flue, electromagnetic valve and lubricating oil pump, it is characterised in that: described
First active piston (114) corresponding with every cylinder intake valve rocking arm (112), the second active piston it is provided with on rocker arm bracket (308)
(120), the first relay piston (113) and second relay piston (101) corresponding with every cylinder exhaust valve rocker (104), rocking arm
It is provided with main oil gallery (303) in seat (308), controls oil duct (307), primary control spool (312), sub-control spool (304) and connect
Connect the first oil duct (301) between active piston and relay piston, the second oil duct (310), the first check valve (302) and second single
To valve (309)；Inlet valve rocker (112) valve end of cylinder is provided with projection, protruding with the first active piston (114), the second master
Dynamic piston (120) connects, and inlet valve rocker (112) tappet end is provided with projection, and protruding same first relay piston (113) connects, row
Valve rocker (104) tappet end is provided with projection, and protruding same second relay piston (101) connects；Inlet valve rocker tappet end tappet
Plunger shaft (110) is connected with main oil gallery (303) by the oilhole (109) being opened on inlet valve rocker tappet end；Exhaust valve shakes
Arm tappet end tappet plunger shaft (107) is through exhaust valve rocker internal oil channel (105), control piston (106) and main oil gallery (303) phase
Even, control piston (106) and connect with control piston (106) built with back-moving spring (117), back-moving spring (117) one end, another
End connects with spring base (116), controls piston (106) and is provided with annular groove (118) vertically, controls piston (106) non-opening
Hold and be connected with control oil duct (307)；First active piston (114) is through the second oil duct (310), the second check valve (309) and master control
Spool processed (312) differs first relay piston (204) of another cylinder of 360 ° and is connected with this cylinder spark angle, main control valve
Core (312) is provided with the spaced apart oilhole (311) radially got through and annular groove (314) vertically, and oilhole (311) is through master
Control the internal axially oil duct (313) of spool (312) to communicate with main oil gallery (303), primary control spool (312) non-opening and control
Oil duct (307) is connected；Second active piston (120) through the first oil duct (301), the of the first check valve (302) and same cylinder
Two relay pistons (101) are connected, first between second relay piston (101) of the second active piston (120) and same cylinder
Oil duct (301) is connected with main oil gallery (303) by sub-control spool (304), and it is recessed that sub-control spool (304) is provided with annular vertically
Groove (305), sub-control spool (304) non-opening is connected with controlling oil duct (307)；On second relay piston (101) side wall surface
Orientation has installed oil leak hole (102)；The oil-feed nose end of all check valves is all connected with main oil gallery (303).
Electromotor two cycle compression release type brake device the most according to claim 1, it is characterised in that described control
Oil duct (307) is connected with lubricating oil pump through electromagnetic valve.
Electromotor two cycle compression release type brake device the most according to claim 1, it is characterised in that described cylinder
Inlet valve (115) there is intake advance angle.
Electromotor two cycle compression release type brake device the most according to claim 1, it is characterised in that described cylinder
Air intake duct on be provided with air throttle.
5. a braking method for electromotor two cycle compression release type brake device as claimed in claim 1, its feature exists
In comprising the steps:
1) during braking, engine stop oil spout is lighted a fire, valve cam proper motion, solenoid valves, and lubricating oil pump drives and makes control
Oil duct (307) oil-feed, in machine oil promotes primary control spool (312), sub-control spool (304) and exhaust valve rocker (104)
Control piston (106) to move axially along respective respectively, the annular groove (314) on primary control spool (312) and oil duct junction phase
Connect, between first relay piston (204) of another cylinder that the first active piston (114) differs 360 ° with this cylinder spark angle
The second oil duct (310) close, the first active piston (114) to this cylinder spark angle differ 360 ° another cylinder first
The driving function of relay piston (204) comes into force；The sidewall (306) of sub-control spool (304) connects with oil duct junction, and second actively lives
The first oil duct (301) between plug (120) and second relay piston (101) of same cylinder is closed, the second active piston (120)
The driving function of second relay piston (101) of same cylinder is come into force；On control piston (106) in exhaust rocker arm (104)
Annular groove (118) connect with the oil duct junction of exhaust valve rocker internal oil channel (105), exhaust valve rocker tappet end tappet plunger shaft
(107) connect with the exhaust valve rocker internal oil channel (105) between main oil gallery (303), exhaust valve rocker tappet end tappet piston
(108) when moving upward, machine oil is to main oil gallery (303) draining, and exhaust valve rocker tappet end tappet piston (108) drives aerofluxus to shake
Arm (104) motor function lost efficacy；
When one cylinder of electromotor is in exhaust stroke latter stage, another cylinder differing 360 ° with this cylinder spark angle is in pressure
Contracting stroke latter stage, now this cylinder intake valve (115) being in exhaust stroke latter stage is opened, and lasts till its induction stroke, its
Press under inlet valve rocker (112) valve end, drive the first active piston (114), the second active piston (120) to move downward；Place
The first active piston (114) in the cylinder in exhaust stroke latter stage drives the first driven work of the cylinder being in compression stroke latter stage
Plug (204) moves upward, and promotes and presses under inlet valve rocker (205) valve end of the cylinder being in compression stroke latter stage, is in pressure
The cylinder intake valve (207) in contracting stroke latter stage is opened, and lasts till its expansion stroke, its first active piston (206), second main
Dynamic piston (208) moves downward；Second active piston (208) of the cylinder being in compression stroke latter stage drives the of same cylinder
Two relay pistons (203) move upward, and promote and press under exhaust valve rocker (202) valve end, are in the cylinder in compression stroke latter stage
Exhaust valve (201) is opened, and lasts till its expansion stroke；It is in second active piston (120) of the cylinder in exhaust stroke latter stage
The second relay piston (101) driving same cylinder moves upward, and promotes and presses under exhaust valve rocker (104) valve end, the row of being in
The inblock cylinder valve (103) in gas stroke latter stage is opened, and lasts till its induction stroke；First oil duct (301) is unidirectional by first
Valve (302) replenisher force feed, the second oil duct (310) passes through the second check valve (309) replenisher force feed；Therefore, cylinder
Inlet valve (115) open air inlet in induction stroke and expansion stroke, exhaust valve (103) is in compression stroke latter stage and exhaust stroke
Latter stage opens aerofluxus, it is achieved two cycle compression release brakings；
2) when need not braking, electromagnetic valve power-off, control oil duct (307) draining, primary control spool (312), sub-control spool
(304) control piston (106) playback and in exhaust valve rocker (104), the oilhole that the radial direction on primary control spool (312) is got through
(311) connect with oil duct junction, the first active piston (114) differ with this cylinder spark angle the first of another cylinder of 360 ° from
The second oil duct (310) between dynamic piston (204) connects with main oil gallery (303), and the first active piston (114) is lighted a fire to this cylinder
Angle differs the driving disabler of first relay piston (204) of another cylinder of 360 °；Annular on sub-control spool (304)
Groove (305) connects with oil duct junction, between second relay piston (101) of the second active piston (120) and same cylinder
One oil duct (301) connects with main oil gallery (303), and the second active piston (120) is to second relay piston (101) of same cylinder
Drive disabler；Sidewall (119) and the exhaust valve rocker internal oil channel (105) of piston (106) is controlled in exhaust valve rocker (104)
Oil duct junction connect, exhaust valve rocker tappet end tappet plunger shaft (107) close, exhaust valve rocker tappet end tappet piston
(108) exhaust valve rocker (104) motor function is driven to come into force；Now engine work.
The braking method of electromotor two cycle compression release type brake device the most according to claim 5, it is characterised in that
During described braking, the first relay piston (113) moves upward, and drives inlet valve rocker (112) tappet end to move upward, main oil
Machine oil in road (303) enters inlet valve rocker tappet end very by the oilhole (109) being opened on inlet valve rocker tappet end
In column piston chamber (110), inlet valve rocker tappet end tappet piston (111) is made to move downward, it is to avoid inlet valve rocker tappet end
Tappet piston (111) separates with inlet valve tappet.
The braking method of electromotor two cycle compression release type brake device the most according to claim 5, it is characterised in that
During described braking, the second relay piston (101) moves upward, and drives exhaust valve rocker (104) tappet end to move upward, main oil
Machine oil in road (303) enters exhaust valve by the annular groove (118) on the control piston (106) in exhaust rocker arm (104)
In rocking arm tappet end tappet plunger shaft (107), exhaust valve rocker tappet end tappet piston (108) is made to move downward, it is to avoid aerofluxus
Door rocking arm tappet end tappet piston (108) separates with exhaust valve lifter.
The braking method of electromotor two cycle compression release type brake device the most according to claim 5, it is characterised in that
During described braking, the second relay piston (101) moves upward, to oil leak hole (102) and the camshaft cover inner chamber of its side wall surface
During connection, the machine oil in the second relay piston (101) working chamber is to camshaft cover inner chamber draining so that the second relay piston
(101) position keeps constant, it is impossible to promotes exhaust valve rocker (104) further, and then makes the exhaust valve (103) during braking keep
Relatively small guide vane, forms pumping loss, prevents exhaust valve (103) from colliding with cylinder piston simultaneously.
The braking method of electromotor two cycle compression release type brake device the most according to claim 5, it is characterised in that
During described braking, the air inflow of cylinder can be controlled by the aperture of the air throttle on regulation air intake duct, and then control
Braking work.
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| CN201610401939.8A CN106089350B (en) | 2016-06-07 | 2016-06-07 | Two cycle compression release type brake device of engine and its braking method |
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| CN201610401939.8A CN106089350B (en) | 2016-06-07 | 2016-06-07 | Two cycle compression release type brake device of engine and its braking method |
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| CN106089350B CN106089350B (en) | 2018-05-01 |
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| CN107288701A (en) * | 2017-06-27 | 2017-10-24 | 浙江大学 | A kind of cycle compression release type complemental brake system of engine two and method |
| CN107939472A (en) * | 2017-10-17 | 2018-04-20 | 浙江大学 | Two cycle compression release type brake device of integrated engine and its braking method |
| CN108868942A (en) * | 2017-05-12 | 2018-11-23 | 卡特彼勒公司 | Hydraulic engine exhaust valve in advance opens system |
| CN110426213A (en) * | 2019-09-03 | 2019-11-08 | 浙江大学 | A kind of hydraulic loaded multifunctional engine valve actuating mechanism testing stand |
| CN110657036A (en) * | 2019-09-29 | 2020-01-07 | 潍柴动力股份有限公司 | Control method and device of supercharger |
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Effective date of registration: 20220701 Address after: 317600 Taiwan trade processing zone, Damaiyu Development Zone, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: Zhejiang Yutai Seiko Co.,Ltd. Address before: 310027 No. 38, Zhejiang Road, Hangzhou, Zhejiang, Xihu District Patentee before: ZHEJIANG University |