CN205013070U - Braking of automobile engine compression is fast system slowly - Google Patents
Braking of automobile engine compression is fast system slowly Download PDFInfo
- Publication number
- CN205013070U CN205013070U CN201520604964.7U CN201520604964U CN205013070U CN 205013070 U CN205013070 U CN 205013070U CN 201520604964 U CN201520604964 U CN 201520604964U CN 205013070 U CN205013070 U CN 205013070U
- Authority
- CN
- China
- Prior art keywords
- piston
- rocking arm
- valve rocker
- venting
- synchronous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
This realization is novel to be a braking of automobile engine compression is fast system slowly, when the automobile goes, this system can send the instruction of slowing down the driver, the engine has stopped the fuel supply simultaneously, the automobile is not again when neutral and clutch are in the state that combines totally, make the gassing rocking arm join with exhaust valve rocker arm waves in good time together, thereby make exhaust valve rocker arm both obey exhaust cam's drive, also obey the drive of gassing cam, both open the exhaust valve at exhaust stroke, also, opens in the piston exhaust valve when being close the compression top dead center, emit the compressed air who has consumed car inertia kinetic energy, and make the piston receive compressed air's promotion less when working stroke, begin just to close soon the exhaust valve at the merit stroke afterwards, working stroke make the piston also produce the movement resistance of negative pressure in order to increase the piston when continuing the motion, the engine that makes this moment becomes air compressor, the inertial motion energy of car is consumed through compressed air.
Description
One. technical field
The utility model relates to a kind of motor car engine compression type and brakes slow system, and the structure that it brakes slow system than known motor car engine compression type is simpler, compacter, weight is lighter.
Two. background technique
At present, the effect that known motor car engine compression type brakes slow system is: when automobile inertial runs, driving wheel drives engine running by transmission system, motor consumes the inertia motion energy of automobile by pressurized air, thus realizes reducing motion speed or reducing running acceleration.It is change exhaust valve valve timing by hydraulic transmission that present motor car engine compression type brakes slow system, when engine piston runs near, back down exhaust valve, pressurized air in firing chamber is released outside cylinder, thus do not have pressurized air promotion piston to run to lower dead center when working stroke, larger motor anti-dragged brake power can be produced like this, strengthen the slow usefulness of braking of motor.Shortcoming is complex structure, bulky, weight is comparatively large, when installing or rebuild an engine adjustment valve clearance time this system also need to carry out gap adjustment.
Three. summary of the invention
In order to overcome existing motor car engine compression type brake the complex structure that slow system exists, bulky, weight comparatively large, install time or rebuild an engine adjustment valve time system also need to carry out the shortcomings such as gap adjustment, this realizes novelly providing a kind of motor car engine compression type to brake slow system, the slow usefulness of engine braking that this system can provide when driver needs motor to carry out braking slow in good time.
This technological scheme realizing novel employing is: be made up of cylinder head, camshaft, first row valve rocker, second row valve rocker, venting rocking arm, retaining spring, timing piston, the first synchronous piston, the second synchronous piston, pitman arm shaft, machine oil pipe, solenoid valve, electronic oil pump, pressure maintaining valve, slow control circuit; Camshaft is provided with the first exhaust cam, the second exhaust cam, releasing cam; First row valve rocker is established the first location to waft platform and the first synchronous piston hole, the first synchronous piston hole has the oil hole on the hollow oil duct of oil duct and pitman arm shaft to communicate, and is provided with timing piston and the first synchronous piston in the first synchronous piston hole; Second row valve rocker is provided with the second location and wafts platform and stop piston hole, stops in piston hole to be provided with stop piston and stop piston reset spring; Venting rocking arm is provided with in the second synchronous piston hole, hole installs the second synchronous piston; First row valve rocker, second row valve rocker, venting rocking arm are all arranged on pitman arm shaft, install and coordinate for Spielpassung; Pitman arm shaft is provided with hollow oil duct; First exhaust cam drives first row valve rocker when engine exhaust strokes, second exhaust cam drives second row valve rocker when engine exhaust strokes, releasing cam engine compression strokes close at the end, start drive venting rocking arm and after expansion stroke starts shortly stop with exit rocking arm contact.
When motor is in Power output, the exhaust cam in camshaft, by driving exhaust valve rocker arm shake, makes exhaust valve open when exhaust stroke, is discharged by the waste gas after burning outside cylinder; Releasing cam in camshaft drives venting rocking arm to do invalid freely shaking.
When driver needs that motor is counter drags automobile to carry out braking slow, drain tap closed by solenoid valve, electronic oil pump in time pumps machine oil and promotes timing piston thus promote synchronous piston, after first row valve rocker, second row valve rocker and venting rocking arm are connected, both drove exhaust valve rocker arm and venting rocker arms roll to shake with the exhaust cam in camshaft, exhaust valve is opened when exhaust stroke; Also venting rocking arm and first row valve rocker, second row valve rocker is driven to shake with the releasing cam in camshaft, exhaust valve is progressively opened when piston infinite approach compression top center, to be released outside cylinder by pressurized air, make the energy in pressurized air can not produce impetus when piston runs to lower dead center to piston, start shortly to close exhaust valve at piston expansion stroke, make piston movement produce negative pressure to increase resistance to motion.
This realizes novel advantage, structure is simple, volume is little, lightweight, there is no adjusted iterm.
Four. accompanying drawing explanation
Below in conjunction with accompanying drawing, novel being described further is realized to this:
Fig. 1 is that this realizes novel camshaft, and the sense of rotation schematic diagram of the relative bearing of each cam and correspondence
Fig. 2 is that this realizes the corresponding relation of novel each cam and each rocking arm and rocking arm and pitman arm shaft partial cutaway schematic
Fig. 3 is that this realizes novel second row valve rocker and the relative position relation schematic diagram of valve and exhaust cam
Fig. 4 is the relative position relation schematic diagram that this realizes novel first row valve rocker and valve and arranges cam
Fig. 5 is that this realizes the corresponding position relation schematic diagram of novel venting rocking arm and releasing cam
Fig. 6 is that this realizes the control system schematic diagram of novel timing piston, the first synchronous piston, the second synchronous piston activity
In figure: 1. camshaft, 2. the first exhaust cam, 3. releasing cam, 4. the second exhaust cam 5. first row valve rocker, 6. exit rocking arm, 7. second row valve rocker, 8. pitman arm shaft, 9. oil hole, 10. timing piston, 11. first synchronous pistons, 12 hollow oil ducts., waft platform in 13 first location, 14 second synchronous pistons, waft platform in 15. second location, 16. oil ducts, 17. stop piston reset spring, and 18. stop piston.19. second adjustment screws, 20 stop piston hole.21. first synchronous piston holes, 22. first adjustment screws, 23. cylinder head.24. plane of orientations, 25. second synchronous piston holes, 26. retaining spring 27. solenoid valves, 28 valve core reseting springs, 29. spools, 30. electromagnetic valve coils, 31. slow control circuits, 32. machine oil pipe .33. electronic oil pumps, 34. pressure maintaining valves.
Five. embodiment
It is by cylinder head (23) that motor car engine compression type brakes slow system, overhead camshaft (1), first row valve rocker (5), second row valve rocker (7), first adjustment screw (22), second adjustment screw (19), venting rocking arm (6), retaining spring (26), timing piston (10), first synchronous piston (11), second synchronous piston (14), stop piston (18), stop piston reset spring (17), pitman arm shaft (8), machine oil pipe (32), solenoid valve (27), electronic oil pump (33), pressure maintaining valve (34), slow control circuit (31) forms.
In FIG, camshaft (1) is provided with the first exhaust cam (2), the second exhaust cam (4) and releasing cam (3), and sense of rotation n display releasing cam (4) is positioned at the corresponding position near compression stroke end of a period.
In fig. 2, the effect of the first exhaust cam (2) and the second exhaust cam (4) is: when exhaust stroke by driving first row valve rocker (5) and second row valve rocker (7) respectively; The effect of releasing cam (3) is: when piston infinite approach near, drives venting rocking arm (6); First row valve rocker (5), second row valve rocker (7) venting rocking arm (6) are all arranged on pitman arm shaft (8), install and coordinate for Spielpassung; the hollow oil duct (12) of pitman arm shaft (8) has oil hole (9), and communicate with the oil duct (16) in first row valve rocker (5) and the first synchronous piston hole (21), timing piston (10) and the first synchronous piston (11) are housed in the first synchronous piston hole (21), first row valve rocker (5) is provided with the first location and wafts platform (13), when the first synchronous piston (11) does not enter second synchronous piston hole (25), and venting rocking arm is under (6) be in the state not contacting releasing cam (3), the first location platform (13) that wafts is all contact with the plane of orientation (24) in venting rocking arm (6), thus the first synchronous piston hole (21) is overlapped with the center line in the second synchronous piston hole (25) in venting rocking arm (6), second row valve rocker (7) be provided with the second location waft platform (15) and stop piston hole (20), when the second synchronous piston (14) does not enter stop piston hole (20), and venting rocking arm is under (6) be in the state not contacting releasing cam (3), the second location platform (15) that wafts is all contact with the plane of orientation (24) in venting rocking arm (6), thus make the second synchronous piston hole (25) and stop that the center line of piston hole (20) overlaps, stop that piston hole (20) is built with stop piston (18) and stop piston reset spring (17).
In figure 3, second row valve rocker (7) is arranged on pitman arm shaft (8), when one end by the second exhaust cam (4) drive lift time, the other end then just backs down exhaust valve downwards together with adjustment screw (19); Second row valve rocker (7) is provided with the second synchronous piston hole (20).
In the diagram, first row valve rocker (5) is arranged on pitman arm shaft (8), when one end by the first exhaust cam (2) drive lift time, the other end then just backs down exhaust valve downwards together with adjustment screw (22), second row valve rocker (5) is provided with the first synchronous piston hole (21), and the first synchronous piston hole (21) is communicated with oil duct (16) and oil hole (9).
In Figure 5, venting rocking arm (6) is arranged on pitman arm shaft (8), when one end by releasing cam (3) drive lift time, the other end then downward compression set spring (26); When rocking arm (6) of exitting does not contact with releasing cam (3), be arranged on the retaining spring (26) in cylinder head (23) plane of orientation (24) of rocking arm of exitting (6) to be popped up and locates the platform that wafts (13) and second with first and locate the platform that wafts (15) and contact, thus 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) is communicated with hollow oil duct (12), the A interface of solenoid valve (27), the oil outlet of electronic oil pump (33) simultaneously; Machine oil pipe (32) has been installed a pressure maintaining valve (34), being turned on or off of the power circuit of electromagnetic valve coil (30) and the power circuit of electronic oil pump (33) controls by controlling deenergizing (31) slowly.
This realizes novel working procedure:
1. when automobile is in travelling state, deceleration instruction is not sent driver, or automobile is in neutral gear, or clutch is when being in the state not exclusively combined, slow control circuit (31) disconnects the power circuit of electromagnetic valve coil (30) and the power circuit of electronic oil pump (33), machine oil is not pumped into machine oil pipe (32) by electronic oil pump (33), spool (29) is in and makes the A interface of solenoid valve (27) and the position of B interface connected state under the effect of valve core reseting spring (28), machine oil now in solenoid valve (27) and machine oil pipe (32) is back to engine sump tank by B interface, thus oil pressure is not had to act on timing piston (10), stop that the second synchronous piston (14) interception is stopping outside piston hole (20) by piston (18) under the effect stopping piston reset spring (17), meanwhile, first synchronous piston (11) is also tackled outside the second synchronous piston hole (25) by the second synchronous piston (14), after this, first row valve rocker (5), second row valve rocker (7) shake under respective corresponding actuated by cams, simultaneously waft under platform (13) and second locates the effect of platform (15) of wafing in the first location, also make venting rocking arm (6) in company with shake, thus 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 venting rocking arm (6) is under the driving of releasing cam (3), locating platform (24) and first locates the platform that wafts (13), after second locating platform (15) disengages, do alone invalid shake, after releasing cam (3) and venting rocking arm (6) disengage, venting rocking arm (6) is under the effect of retaining spring (26), make plane of orientation (24) keep locating with first the platform that wafts (13) and second to locate the platform that wafts (15) and contact and make the adjoint first row valve rocker (5) of rocking arm (6) of exitting, second row valve rocker (7) shakes, also make the first synchronous piston hole (21) simultaneously, the center line of the second synchronous piston hole (25) and stop piston hole (20) overlaps.
2. send deceleration instruction when slow control circuit (31) detects driver, automobile is not at neutral gear and clutch the state combined completely again, and stopped after motor supply fuel oil, slow control circuit (31) connects the power circuit of electromagnetic valve coil (30) and the power circuit of electronic oil pump (33) immediately, spool (29) overcomes the elastic force of valve core reseting spring (28) under the effect of electromagnetic force, be in the A interface of closed solenoid valve (27) and the position of B interface, machine oil is pumped into machine oil pipe (32) and enters the hollow oil duct (12) of pitman arm shaft (8) by electronic oil pump (33) simultaneously, enter oil duct (16) and the first synchronous piston hole through oil hole (9) again and promote timing piston (10), timing piston (10) promotes again the first synchronous piston (11), and in the first synchronous piston hole (21), when the center line of the second synchronous piston hole (25) and stop piston hole (20) overlaps, first synchronous piston (11) is pushed the second synchronous piston hole (25) to promote the second synchronous piston (14) simultaneously and make it to enter simultaneously and stop piston hole (20), promote again to stop piston (18) and compression stop piston reset spring (17) simultaneously, so far completed and made first row valve rocker (5), venting rocking arm (6), second row valve rocker (7) combine shake operation, first row valve rocker (5) now, venting rocking arm (6), second row valve rocker (7) both can in the first exhaust cam (2), synchronously shake under the driving of the second exhaust cam (4), complete the action of the unlatching exhaust valve when engine exhaust strokes, synchronously can shake under the driving of releasing cam (3) again, complete to be at piston and pressurized air released action outside cylinder close to opening exhaust valve during near, when piston enters expansion stroke soon, releasing cam (3) namely disengages with venting rocking arm (6), and exhaust valve cuts out immediately, produces negative pressure to increase the resistance to motion of piston at piston while having continued expansion stroke, automobile is now in inertia running state, and motor drives running by automobile driving wheel by transmission system, and motor becomes air compressor, by pressurized air to consume the inertia kinetic energy of automobile, therebetween for ensureing that the oil pressure in machine oil pipe (32) is stablized, made electronic oil pump (33) not occur transshipping phenomenon, when oil pressure in machine oil pipe (32) is higher than setting engine oil pressure, pressure maintaining valve (34) immediate unlock is to engine sump tank draining.
3. cancel deceleration instruction when slow control circuit (31) detects driver, or automobile is in neutral gear, or clutch is in the state not exclusively combined, or driver recovers after motor supply fuel oil, at once the power circuit of electromagnetic valve coil (30) and the power circuit of electronic oil pump (33) is disconnected, electronic oil pump (33) does not have machine oil to pump into machine oil pipe (32) immediately, spool (29) is also in immediately and makes the A interface of solenoid valve (27) and the position of B interface connected state under the effect of Returnning spring (28), machine oil now in solenoid valve (27) and machine oil pipe (32) is back to engine sump tank by B interface, oil pressure is not had to act on timing piston (10) immediately yet, then when rocking arm (6) of exitting does not contact with releasing cam (3), stop that the second synchronous piston (14) is released by piston (18) under the effect stopping piston reset spring (17) and stop piston hole (20), meanwhile, first synchronous piston (11) is also released the second synchronous piston hole (25) by the second synchronous piston (14), after this, as long as venting rocking arm (6) does not contact with releasing cam (3), first row valve rocker (5), second row valve rocker (7) shake under respective corresponding actuated by cams, first location waft platform (13) and second locate waft platform (15) effect under, also make venting rocking arm (6) in company with shake, thus 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 venting rocking arm (6) is under the driving of releasing cam (3), locating platform (24) is namely located the platform that wafts (13) and second and is located the platform that wafts (15) and disengage with first, do alone invalid shake, after releasing cam (3) and venting rocking arm (6) disengage, venting rocking arm (6) is under the effect of retaining spring (26), plane of orientation (24) is kept and first locates the platform that wafts (13) and second and locate the platform that wafts (15) and contact, thus make the first synchronous piston hole (21), the center line of the second synchronous piston hole (25) and stop piston hole (20) overlaps.
Claims (2)
1. motor car engine compression type brakes a slow system, is made up of cylinder head, camshaft, first row valve rocker, second row valve rocker, venting rocking arm, retaining spring, timing piston, the first synchronous piston, the second synchronous piston, pitman arm shaft, machine oil pipe, solenoid valve, electronic oil pump, pressure maintaining valve, slow control circuit; It is characterized in that: camshaft is provided with the first exhaust cam, the second exhaust cam, releasing cam; First row valve rocker is established the first location to waft platform and the first synchronous piston hole, the first synchronous piston hole has the oil hole on the hollow oil duct of oil duct and pitman arm shaft to communicate, and is provided with timing piston and the first synchronous piston in the first synchronous piston hole; Second row valve rocker is provided with the second location and wafts platform and stop piston hole, stops in piston hole to be provided with stop piston and stop piston reset spring; Venting rocking arm is provided with in the second synchronous piston hole, hole installs the second synchronous piston; First row valve rocker, second row valve rocker, venting rocking arm are all arranged on pitman arm shaft, install and coordinate for Spielpassung; Pitman arm shaft is provided with hollow oil duct; First exhaust cam drives first row valve rocker when engine exhaust strokes, second exhaust cam drives second row valve rocker when engine exhaust strokes, releasing cam engine compression strokes close at the end, start drive venting rocking arm and after expansion stroke starts shortly stop with exit rocking arm contact.
2. motor car engine compression type according to claim 1 brakes slow system, it is characterized in that: first row valve rocker is provided with the first location and wafts platform, second row valve rocker is provided with the second location and wafts platform, venting rocking arm is provided with locating platform, between venting rocking arm and cylinder head, is provided with retaining spring, and one end of retaining spring heads on venting rocking arm, the other end heads on cylinder head; As long as when venting rocking arm does not contact with releasing cam, under the effect of retaining spring, locating platform all can keep locating with first the platform and second that wafts and locate the platform that wafts and contact, thus keeps the first synchronous piston hole with the second synchronous piston hole and stop that the center line of piston hole overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520604964.7U CN205013070U (en) | 2015-08-11 | 2015-08-11 | Braking of automobile engine compression is fast system slowly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520604964.7U CN205013070U (en) | 2015-08-11 | 2015-08-11 | Braking of automobile engine compression is fast system slowly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013070U true CN205013070U (en) | 2016-02-03 |
Family
ID=55211679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520604964.7U Withdrawn - After Issue CN205013070U (en) | 2015-08-11 | 2015-08-11 | Braking of automobile engine compression is fast system slowly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156167A (en) * | 2015-08-11 | 2015-12-16 | 莫嘉林 | Compression type braking and retarding system for automobile engine |
-
2015
- 2015-08-11 CN CN201520604964.7U patent/CN205013070U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156167A (en) * | 2015-08-11 | 2015-12-16 | 莫嘉林 | Compression type braking and retarding system for automobile engine |
| CN105156167B (en) * | 2015-08-11 | 2017-11-07 | 莫嘉林 | Automobile engine compression brakes slow system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100519998C (en) | Compressed air engine electrically driven whole-variable valve actuating system | |
| CN100357573C (en) | Valve control apparatus for IC engine | |
| CN104321577B (en) | Use engine braking mechanism is used for engine system and the operational approach that exhaust valve is opened in advance | |
| CN107023342A (en) | A kind of change pattern valve-driving system | |
| CN108868947B (en) | Reset rocker arm type engine braking device and braking method thereof | |
| CN107288701B (en) | Two-stroke compression release type auxiliary braking device and method for engine | |
| CN102588030A (en) | Auxiliary valve driving mechanism of engine | |
| CN101377138B (en) | Sliding valve type two-mode engine intake valve delaying shutdown system | |
| CN105089822A (en) | Automobile engine braking and retarding system | |
| CN205013070U (en) | Braking of automobile engine compression is fast system slowly | |
| CN202611787U (en) | Fixed-chain-type special rocker arm brake device | |
| CN205013133U (en) | Automobile engine compression is fast system slowly | |
| CN201507333U (en) | Drive mechanism for engine brake | |
| CN205013134U (en) | Automobile engine braking is fast system slowly | |
| CN105156167A (en) | Compression type braking and retarding system for automobile engine | |
| CN205013071U (en) | Automobile engine is fast system slowly | |
| CN201314249Y (en) | Time-delay closing system of two-section engine intake valve controlled by slide valve | |
| CN201924986U (en) | Special valve driving mechanism for engine brake | |
| CN105179091A (en) | Compression type speed reducing system for automobile engine | |
| CN201513210U (en) | Driving mechanism for engine brake and capable of being integrated with engine | |
| CN101215980A (en) | Engine brake device | |
| CN105041403A (en) | Speed retardance system for automobile engine | |
| CN201133267Y (en) | Novel engine brake device | |
| CN208858459U (en) | Automobile engine lower resistance gliding system | |
| CN213392302U (en) | Three-valve overhead single camshaft engine air distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160203 Effective date of abandoning: 20171107 |
|
| AV01 | Patent right actively abandoned |