CN105179091B - The slow system of automobile engine compression - Google Patents
The slow system of automobile engine compression Download PDFInfo
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- CN105179091B CN105179091B CN201510491515.0A CN201510491515A CN105179091B CN 105179091 B CN105179091 B CN 105179091B CN 201510491515 A CN201510491515 A CN 201510491515A CN 105179091 B CN105179091 B CN 105179091B
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Abstract
The present invention is a kind of slow system of automobile engine compression；During running car, the system can send deceleration instruction in driver, and engine stops fuel oil supply again, automobile is not again when neutral gear and clutch are in the state being completely combined, the system in time makes deflation rocking arm and exhaust valve rocker link together shake, so that the driving that exhaust valve rocker had both obeyed exhaust cam opens exhaust valve in exhaust stroke, the driving of releasing cam is obeyed again, exhaust valve is opened when piston is close to compression top center, release the compressed air for having consumed automobile kinetic energy, make the promotion of piston few compressed air in expansion stroke, and start to be shut off exhaust valve soon in work(stroke, piston is set also to produce negative pressure while motion to increase the resistance of motion of piston, so engine is set to become air compressor, the inertia motion energy of automobile is consumed by compressed air.
Description
One, technical fields
The present invention relates to a kind of slow system of automobile engine compression, and it is more slow than known automobile engine compression
The structure of system is simpler, more compact, weight is lighter.
Two, background technologies
At present, the effect of the known slow system of automobile engine compression is：When automobile inertial is run, driving wheel leads to
Cross transmission system and drive engine operating, thus transported with consuming the operation energy of automobile so as to realize to reduce the speed of service or reduce
Row acceleration.The present slow system of automobile engine compression is to change valve timing by hydraulic drive, makes engine
When piston runs near, the valve that begins to rehearse is pushed up, the compressed air in combustion chamber is released outside cylinder, so as to do
Do not have compressed air to promote piston to be run to lower dead center during work(stroke, so can further increase the anti-brake force dragged of engine,
Strengthen the slow efficiency of braking of engine.Shortcoming is complicated, bulky, weight is larger, installation when or rebuild an engine
Need to carry out gap adjustment when adjusting valve.
The three, content of the invention
In order to overcome existing for the existing slow system of automobile engine compression it is complicated, bulky, weight is larger,
During installation or rebuild an engine adjustment valve when the shortcomings of needing to carry out gap adjustment, the present invention provides a kind of automobile engine pressure
The slow system of contracting formula, the system can be when driver need engine to carry out braking slow, and it is slow that engine can provide braking in good time
Quick-acting energy.
The technical solution adopted by the present invention is：By cylinder head, camshaft, first row valve rocker, second row valve rocker,
Deflation rocking arm, the retaining spring of deflation rocking arm, the first roller bearing, the second roller bearing, three rollers bearing, timing piston,
First synchronous piston, the second synchronous piston, stop piston, stop piston reset spring, be rocker arm shaft, machine oil pipe, magnetic valve, electronic
Lubricating oil pump, pressure maintaining valve, slow control circuit composition.Camshaft is convex provided with first exhaust cam, second exhaust cam, deflation
Wheel；First roller bearing is installed on first row valve rocker and positions float platform, oil duct, the first synchronous piston hole provided with first,
First synchronous piston hole connects the oil hole on oil duct and rocker arm shaft, and timing piston and first are provided with the first synchronous piston hole
Synchronous piston；Second roller bearing is installed on second row valve rocker and positions the platform that floats provided with second, stop piston hole, is stopped
It is provided with piston hole and stops piston and stop piston reset spring；Three rollers bearing is installed and provided with fixed on deflation rocking arm
Bit plane, the second synchronous piston hole, the second synchronous piston is installed in the second synchronous piston hole；Pacify between deflation rocking arm and cylinder head
Equipped with retaining spring, one end of retaining spring heads on deflation rocking arm, the other end heads on cylinder head；First row valve rocker, second
Exhaust valve rocker, deflation rocking arm are all arranged on rocker arm shaft, and installation coordinates with gap is combined into；In engine exhaust strokes first
Exhaust cam drives the first roller bearing, the Roller Shaft of second exhaust actuated by cams second；In the close end of a period of engine compression strokes
When releasing cam start drive three rollers bearing and after expansion stroke starts shortly with three rollers bearing depart from connect
Touch；Machine oil pipe is connected with the oil-out of hollow oil duct, the A interfaces of magnetic valve, electronic oil pump, and one is mounted with machine oil pipe surely
Pressure valve；Slowly on-off is led by what circuit processed controlled the power circuit of electromagnetic valve coil and the power circuit of electronic oil pump
Open.
When engine is in power output, the exhaust cam in camshaft is by driving valve roller bearing to realize driving
Exhaust valve rocker shakes, and exhaust valve is opened in instroke, by outside the waste gas discharge cylinder after burning；Putting in camshaft
Gas cam is by driving valve roller bearing to realize that driving deflation rocking arm is made idle freely to shake.Engine is needed in driver
Anti- when dragging the automobile to carry out braking slow, magnetic valve closes drain tap, lubricating oil pump and machine oil in time is pumped into machine oil pipe to push away in good time
Dynamic timing piston makes exhaust valve rocker and after deflation rocking arm is connected, exhaust valve rocker and deflation so as to promoting synchronous piston
Rocking arm both shook with the exhaust cam driving in camshaft, exhaust valve is opened in instroke, and with camshaft
Releasing cam driving shake together, exhaust valve is progressively opened when piston is close to compression top center, will be put by compressed air
Go out outside cylinder, make the energy in compressed air to produce impetus to piston when piston is run to lower dead center, in piston
Expansion stroke starts to be shut off exhaust valve soon, and negative pressure is produced to increase fortune while making piston when continuing to move to lower dead center
Dynamic resistance.
It is an advantage of the invention that simple in construction, small volume, in light weight, part is few, without adjusted iterm.
Four, are illustrated
The invention will be further described with implementation below in conjunction with the accompanying drawings.
Fig. 1 is the camshaft of the present invention, and the contra of each cam puts and corresponding direction of rotation schematic diagram
Fig. 2 is corresponding relation and rocking arm and rocker arm shaft partial cutaway schematic of each cam with each rocking arm of the present invention
Fig. 3 is the second row valve rocker and valve and the relative position relation schematic diagram of exhaust cam of the present invention
Fig. 4 is the first row valve rocker and valve and the relative position relation schematic diagram of exhaust cam of the present invention
Fig. 5 is the deflation rocking arm of the present invention and the correspondence position relation schematic diagram of releasing cam
Fig. 6 is the control system schematic diagram of the synchronous piston activity of the present invention
In figure：1. camshaft, 2. first exhaust cams, 3. releasing cams, 4. second exhaust cams, 5. first row valves shake
Arm, 6. deflation rocking arms, 7. second row valve rockers, 8. rocker arm shafts, 9. oil holes, 10. timing pistons, 11. first synchronous pistons,
12. hollow oil duct, 13. first position the platform that floats, and 14 second synchronous pistons, 15. second position the platform that floats, and 16. oil ducts, 17. stop work
Plug back-moving spring, 18. stop pistons, 19. second adjusting screws, 20 stop piston holes, 21. first synchronous piston holes, 22. first
Adjusting screw, 23. cylinder head, 24. positioning planes, 25. second synchronous piston holes, the magnetic valve of 26. retaining spring 27., 28 valve elements
Back-moving spring, 29. valve elements, 30. electromagnetic valve coils, 31. slow control circuits, 32. machine oil pipes, 33. first roller bearings, 34.
Three rollers bearing, 35. second roller bearings, 36 electronic oil pumps, 37. pressure maintaining valves.
Five, embodiments
The slow system of automobile engine compression is by cylinder head (23), camshaft (1), first row valve rocker (5),
Two exhaust valve rockers (7), deflation rocking arm (6) rocker arm shaft (8), timing piston (10), the first synchronous piston (11), second synchronously live
(14) are filled in stop piston (18), stop piston reset spring (17), the first roller bearing (33), the second roller bearing (35), the
Three rollers bearing (34), machine oil pipe (32), magnetic valve (27), electronic oil pump (36), pressure maintaining valve (37) and slow control circuit
Composition.
In Fig. 1, there are first exhaust cam (2), second exhaust cam (4) and releasing cam (3) on camshaft (1), revolve
Turn direction n and show the correspondence position that releasing cam (3) is located near compression stroke end of a period.
In fig. 2, the effect of first exhaust cam (2) and second exhaust cam (4) is：Pass through difference in exhaust stroke
The first roller bearing (33) and the second roller bearing (35) are driven, makes first row valve rocker (5) and second row valve rocker (7)
Open exhaust valve；The effect of releasing cam (3) is：When piston is close near, by driving three rollers bearing
(34) so that deflation rocking arm (6) shakes；First row valve rocker (5), second row valve rocker (7), deflation rocking arm (6) are all pacified
On arm axle (8), installation coordinates with gap is combined into, when being fitted with roller bearing in each rocking arm to reduce actuated by cams rocking arm
Frictional resistance；Set on the hollow oil duct (12) of rocker arm shaft (8) oil hole (9) and with the oil duct in first row valve rocker (5)
(16) and the first synchronous piston hole (21) communicates；First roller bearing (33) is installed on first row valve rocker (5) and is provided with
First positions float platform (13) and the first synchronous piston hole, and timing piston (10) and first are housed in the first synchronous piston hole (21)
Synchronous piston (11), when the first synchronous piston (11) does not enter into the second synchronous piston hole (25), and on deflation rocking arm (6)
Three rollers bearing (34) is in and is not in contact with the state of releasing cam (3), and the first positioning platform (13) that floats is shaken with deflation
Positioning plane (24) contact on arm (6), so that the first synchronous piston hole (21) and second in deflation rocking arm (6) are synchronous living
The center line of consent (25) overlaps；Second roller bearing (35) is installed and provided with the second positioning on second row valve rocker (7)
Float platform (15) and stop piston hole (20), stops piston hole (20) built with stop piston (18) and stops piston reset spring
(17), when the second synchronous piston (14) does not enter into and stops piston hole (20), and deflation rocking arm (6) is in and is not in contact with deflating
In the state of cam (3), the second positioning platform (15) that floats is contacted with the positioning plane (24) on deflation rocking arm (6), so that
Second synchronous piston hole (25) overlaps with the center line of the stop piston hole (20) in second row valve rocker (7)；Deflation rocking arm
(6) three rollers bearing (34) is installed on and synchronously lived provided with positioning plane (24) and the second synchronous piston hole (25), second
The second synchronous piston (14) is mounted with consent (25), if the three rollers bearing (34) on deflation rocking arm (6) not with deflation
Cam (3) contacts, and positioning plane (24) is all to position the platform (15) that floats with the first positioning platform (13) and second that floats and contact, and makes first same
Step piston hole (21) overlaps with the center line in the second synchronous piston hole (25) and resistance shelves piston hole (20).
In Fig. 3, the effect of second exhaust cam (4) is：In exhaust stroke by driving the second roller bearing (35) to make
Second row valve rocker (7) and adjusting screw (19) open exhaust valve.
In Fig. 4, the effect of first exhaust cam (2) is：In exhaust stroke by driving the first roller bearing (33) to make
First row valve rocker (5) and adjusting screw (22) open exhaust valve.
In Fig. 5, when releasing cam (3) does not contact with three rollers bearing (34), determine in cylinder head (23)
The positioning plane (24) of deflation rocking arm (8) is popped up and floats platform (13) with positioning and the positioning platform (15) that floats connects by position spring (26)
Touch, so as to realize the first synchronous piston hole (21), the second synchronous piston hole (25), stop that the center line of piston hole (20) overlaps.
In Fig. 6, machine oil pipe (32) while hollow oil duct (12), the A interfaces of magnetic valve (27), electronic oil pump (36) are connected
Oil-out, a pressure maintaining valve (37) is installed on machine oil pipe (32)；When electromagnetic valve coil (30) is powered, valve element (29) is in closing
The A interfaces of magnetic valve (27) and the position of B interface, when electromagnetic valve coil (30) powers off, valve element (29) is in valve core reseting spring
(28) in the position for making magnetic valve (27) A orifice B interface in the presence of, slow control circuit (31) is transported according to automobile
Row state and the intention of driver are appropriately energized or disconnected the power circuit and electronic oil pump (36) of electromagnetic valve coil (30)
Power circuit.
The course of work of the present invention：
1. in running car, deceleration instruction is not sent in driver or automobile is in neutral gear or clutch is in endless
During the state combined entirely, slow control circuit (31) disconnects the power circuit and electronic oil pump (36) of electromagnetic valve coil (30)
Power circuit, valve element (29) is in the presence of valve core reseting spring (28) in the position for making magnetic valve (27) A orifice B interface
Put, cause the machine oil in magnetic valve (27) and in machine oil pipe (32) to be back to engine sump tank by B interface so that without oil
Pressure acts on timing piston (10), stops that piston (18) is synchronous living by second in the presence of piston reset spring (17) is stopped
Plug (14) is intercepted outside stop piston hole (20), at the same time the second synchronous piston (14) also blocks the first synchronous piston (11)
Cut outside the second synchronous piston hole (25), now, first row valve rocker (5), second row valve rocker (7) are each corresponding to
Shaken under actuated by cams, float platform (13) in the first positioning and the second positioning is floatd in the presence of platform (15), also make deflation rocking arm (6) with
With shaking, make the first synchronous piston hole (21), the second synchronous piston hole (25) and stop that the center line of piston hole (20) overlaps；When
Three rollers bearing (34) under the driving of releasing cam (3), float platform (13) and second fixed by positioning plane (24) and the first positioning
The position platform (15) that floats disengages, makees invalid shake alone, after releasing cam (3) and three rollers bearing (34) disengage,
Deflation rocking arm (6) makes positioning plane (24) keep positioning float platform (13) and second with first in the presence of retaining spring (26)
Positioning floats platform (15) contact simultaneously with first row valve rocker (5), second row valve rocker (7) shake, so that first is synchronous
Piston hole (21), the second synchronous piston hole (25) and the center line coincidence for stopping piston hole (20).
2. when slow control circuit (31) detects, driver has sent deceleration instruction while engine has stopped fuel oil and supplied
Should, automobile again not after neutral gear and clutch are in the state being completely combined, slow control circuit (31) connects magnetic valve immediately
The power circuit of coil (30) and the power circuit of electronic oil pump (36), valve element (29) overcome valve element in the presence of electromagnetic force
The elastic force of back-moving spring (28), the position in closing magnetic valve (27) A interfaces and B interface, electronic oil pump (36) is by machine oil
It is pumped into machine oil pipe (32) and enters hollow oil duct (12), then enters oil duct (16) and the first synchronous piston hole through oil hole (9)
(21) and timing piston (10) is promoted, timing piston (10) promotes the first synchronous piston (11) again, in the first synchronous piston hole
(21) when, the center line of the second synchronous piston hole (25) and stop piston hole (20) overlaps, the first synchronous piston (11) is pushed into
Second synchronous piston hole (25) while the second synchronous piston (14) is promoted to be allowed to enter simultaneously and stop piston hole (20) and simultaneously
Promote and stop piston (18) and compress stop piston reset spring (17), so far completed to make first row valve rocker (5), deflated
Rocking arm (6), second row valve rocker (7) are combined together the operation of shake, and first row valve rocker (5) now, deflation are shaken
Arm (6), second row valve rocker (7) both first exhaust cam (2), second exhaust cam (4) driving under synchronously shaken
Exhaust valve actuation is opened into engine exhaust strokes, can synchronously shake, complete in piston under the driving of releasing cam (3) again
In the action released compressed air close to unlatching exhaust valve during compression stroke near top dead center outside cylinder, piston is set to do work
Not compressed air push during stroke；Automobile now is in inertia running status, and engine passes through transmission by automobile driving wheel
System drives operating, and engine become air compressor, by compressed air to consume the inertia kinetic energy of automobile；To ensure electricity
Motivation oil pump (36) occurs without overload phenomenon and ensures that the oil pressure in machine oil pipe (32) is stable, the oil pressure in machine oil pipe (32)
During higher than setting engine oil pressure, pressure maintaining valve (37) is opened to engine sump tank draining at once.
3. when slow control circuit (31) detect driver cancelled deceleration instruction or recovered to engine supply fire
Oil or automobile are in neutral gear or clutch after the state for not completing to combine, and slow control circuit (31) then turns off electromagnetism
The power circuit of valve coil (30) and the power circuit of electronic oil pump (36), valve element (29) is immediately in the work of back-moving spring (28)
With lower in the position for making magnetic valve (27) A orifice B interface, cause the machine in magnetic valve (27) and machine oil pipe (32)
Oil is back to engine sump tank by B interface so that no oil pressure is acted on timing piston (10), then in three rollers
When bearing (34) does not contact with releasing cam (3), stop that piston (18) is stopping the in the presence of piston reset spring (17)
Two synchronous pistons (14), which are released, stops piston hole (20), and at the same time, the second synchronous piston (14) is also by the first synchronous piston
(11) the second synchronous piston hole (25) is released；Hereafter, as long as three rollers bearing (34) does not contact with releasing cam (3), the
One exhaust valve rocker (5), second row valve rocker (7) are shaken under respective corresponding actuated by cams, and the platform (13) that floats is positioned first
Floatd with the second positioning in the presence of platform (15), also make deflation rocking arm (6) in company with shaking, make the first synchronous piston hole (21), second same
Walk piston hole (25) and stop that the center line of piston hole (20) overlaps；When drive of the three rollers bearing (34) in releasing cam (3)
Under dynamic, locating platform (24) floats with the first positioning platform (13) and second to be positioned the platform (15) that floats and disengages, makees invalid shake alone
Dynamic, after releasing cam (3) disengages with deflation rocking arm (6), deflation rocking arm (6) makes in the presence of retaining spring (26)
Positioning plane (24) keeps positioning the platform (15) that floats with the first positioning platform (13) and second that floats and contacting, so that the first synchronous piston hole
(21), the center line of the second synchronous piston hole (25) and stop piston hole (20) overlaps.
Claims (1)
- A kind of 1. slow system of automobile engine compression, by cylinder head, camshaft, first row valve rocker, second row valve Rocking arm, deflation rocking arm, the retaining spring of deflation rocking arm, the first roller bearing, the second roller bearing, three rollers bearing, timing Piston, the first synchronous piston, the second synchronous piston, stop piston, stop piston reset spring, rocker arm shaft, machine oil pipe, electromagnetism Valve, electronic oil pump, pressure maintaining valve, slow control circuit composition；It is characterized in that：Camshaft is provided with first exhaust cam, the Two exhaust cams, releasing cam；First roller bearing is installed on first row valve rocker and positions float platform, oil provided with first Road, the first synchronous piston hole, the first synchronous piston hole connect the oil hole on oil duct and rocker arm shaft, pacified in the first synchronous piston hole Equipped with timing piston and the first synchronous piston；Second roller bearing is installed on second row valve rocker and floatd provided with the second positioning Platform, stop piston hole, stop and stop piston and stop piston reset spring are installed in piston hole；Is provided with deflation rocking arm Three rollers bearing is simultaneously provided with positioning plane, the second synchronous piston hole, and the second synchronous piston is installed in the second synchronous piston hole；Deflate Retaining spring is installed, one end of retaining spring heads on deflation rocking arm, the other end heads on cylinder head between rocking arm and cylinder head；The One exhaust valve rocker, second row valve rocker, deflation rocking arm are all arranged on rocker arm shaft, and installation coordinates with gap is combined into；Sending out The roller bearing of first exhaust actuated by cams first during motivation exhaust stroke, the roller bearing of second exhaust actuated by cams second；Sending out Motivation compression stroke close to end when releasing cam start drive three rollers bearing and after expansion stroke starts shortly with Three rollers bearing disengages；Machine oil pipe connects with the oil-out of hollow oil duct, the A interfaces of magnetic valve, electronic oil pump, machine A pressure maintaining valve is mounted with oil pipe；The power circuit of electromagnetic valve coil and the electricity of electronic oil pump are slowly controlled by circuit processed Source circuit is turned on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491515.0A CN105179091B (en) | 2015-08-10 | 2015-08-10 | The slow system of automobile engine compression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491515.0A CN105179091B (en) | 2015-08-10 | 2015-08-10 | The slow system of automobile engine compression |
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| Publication Number | Publication Date |
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| CN105179091A CN105179091A (en) | 2015-12-23 |
| CN105179091B true CN105179091B (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510491515.0A Active CN105179091B (en) | 2015-08-10 | 2015-08-10 | The slow system of automobile engine compression |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6321701B1 (en) * | 1997-11-04 | 2001-11-27 | Diesel Engine Retarders, Inc. | Lost motion valve actuation system |
| CN102787880A (en) * | 2011-05-18 | 2012-11-21 | 上海尤顺汽车部件有限公司 | Method and device for manufacturing rocking arm with main piston and auxiliary piston |
| CN202611787U (en) * | 2012-05-09 | 2012-12-19 | 上海尤顺汽车部件有限公司 | Fixed-chain-type special rocker arm brake device |
| CN203097985U (en) * | 2013-01-09 | 2013-07-31 | 上海尤顺汽车部件有限公司 | Engine braking device with special cam for braking single valve |
| CN205013133U (en) * | 2015-08-10 | 2016-02-03 | 莫嘉林 | Automobile engine compression is fast system slowly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3409021B2 (en) * | 2000-06-15 | 2003-05-19 | 自動車部品工業株式会社 | Engine brake device |
| US6715466B2 (en) * | 2001-12-17 | 2004-04-06 | Caterpillar Inc | Method and apparatus for operating an internal combustion engine exhaust valve for braking |
| US7162996B2 (en) * | 2002-12-23 | 2007-01-16 | Jacobs Vehicle Systems, Inc. | Engine braking methods and apparatus |
-
2015
- 2015-08-10 CN CN201510491515.0A patent/CN105179091B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6321701B1 (en) * | 1997-11-04 | 2001-11-27 | Diesel Engine Retarders, Inc. | Lost motion valve actuation system |
| CN102787880A (en) * | 2011-05-18 | 2012-11-21 | 上海尤顺汽车部件有限公司 | Method and device for manufacturing rocking arm with main piston and auxiliary piston |
| CN202611787U (en) * | 2012-05-09 | 2012-12-19 | 上海尤顺汽车部件有限公司 | Fixed-chain-type special rocker arm brake device |
| CN203097985U (en) * | 2013-01-09 | 2013-07-31 | 上海尤顺汽车部件有限公司 | Engine braking device with special cam for braking single valve |
| CN205013133U (en) * | 2015-08-10 | 2016-02-03 | 莫嘉林 | Automobile engine compression is fast system slowly |
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| Publication number | Publication date |
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| CN105179091A (en) | 2015-12-23 |
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