CN201027554Y - Device for enhancing engine braking power and stepless adjusting braking power - Google Patents
Device for enhancing engine braking power and stepless adjusting braking power Download PDFInfo
- Publication number
- CN201027554Y CN201027554Y CNU2007200958694U CN200720095869U CN201027554Y CN 201027554 Y CN201027554 Y CN 201027554Y CN U2007200958694 U CNU2007200958694 U CN U2007200958694U CN 200720095869 U CN200720095869 U CN 200720095869U CN 201027554 Y CN201027554 Y CN 201027554Y
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- sun gear
- cam shaft
- exhaust cam
- planet
- gear
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to a brake power stepless adjustable device which can improve brake power of engine. The device comprises a first input part consisting of a chain wheel, a small sun gear, three planetary wheels and a big sun gear, a second input part which is a phase control part consisting of a drive motor, a worm, a worm wheel and a big sun gear, and a joint output part consisting of a planet carrier and an exhaust cam shaft; a rotary motion of a crankshaft according to the relation of transmission ratio 2 is output to the exhaust cam shaft by the first input part to complete the needed motion of the exhaust cam shaft when the engine is in a normal operation. In addition, the degrees rotation of the motor according to the relation of certain transmission ratio is output to the exhaust cam shaft by the second input part to complete the needed phase changing angle of the exhaust cam shaft when the engine is used as a brake gear to operate. The utility model adjusts the brake power to achieve a big brake power through changing the phase of the exhaust cam shaft and has a simple structure, reasonable design, reliable performance and wide application.
Description
Technical field
The utility model relates to a kind of engine braking apparatus, particularly relates to a kind of adjustable device of engine braking power and braking power stepless that improves.
Background technique
At present, engine braking apparatus is widely used in the various vehicles as the complemental brake system of vehicle.In the art, the noncondensing engine braking device is well-known.The work and the mode of braking of this engine braking apparatus are: motor is as the required energy of power source output vehicle driving of vehicle when cruising, motor temporarily is transformed into the kinergety that air compressor absorbs vehicle when needing braking deceleration, to reach the purpose of braking.The basic structure of this engine braking apparatus is open in U. S. Patent, and the patent No. is: 3220392.Basic structure below in conjunction with this engine braking apparatus of Figure 14 simple declaration.The engine braking apparatus of this structure has adopted a cover to comprise the hydraulic mechanism of component such as active piston and relay piston, active piston reaches the last timing of compression stroke top dead center generation at quarter high pressure oil at engine piston in this hydraulic mechanism, and drive relay piston by oil transportation channel and open exhaust valve, discharge the compressed high-pressure air of the inherent compression stroke of cylinder, make it not reach the purpose that the absorption energy makes vehicle deceleration with this to the piston acting in expansion stroke.The braking force of this engine braking apparatus is to be that the cylinder number of braking mode is adjusted by control transformation.The many more braking force of cylinder number that are converted to braking mode are also just big more, but each cylinder has only a stroke to absorb energy in four strokes, even therefore all cylinders all are converted to braking mode, braking force still is limited.And the adjustment of this braking force is discontinuous, so braking force produces the motor miscellaneous part when adjusting and impacts.
The model utility content
The purpose of this utility model provides a kind of adjustable device of engine braking power and braking power stepless that improves, and powerful braking force can be provided when vehicle needs braking force, and as the case may be car brakeing power be carried out stepless adjustment.
The technological scheme that the utility model adopted is for achieving the above object: a kind of adjustable device of engine braking power and braking power stepless that improves is characterized in that this device comprises: sprocket wheel, small sun gear, key, planet wheel, pin, planet carrier, big sun gear, worm-gear toothing, gear on worm, drive motor, inside cover, outboard cover, bolt, pad, locking nut, exhaust cam shaft, cam, outlet valve, cylinder block, gas exhaust manifold, piston, suction valve, intake manifold, bent axle, crankshaft sprocket, chain; Its middle sprocket is the ladder barrel shape and is divided into large-diameter portion and minor diameter, and the large-diameter portion circumferential surface is made sprocket tooth, is connected with crankshaft sprocket by chain, and the minor diameter circumferential outer surface is provided with a keyway, and sprocket wheel is enclosed within on the exhaust cam shaft, and can rotate relatively; It is cylindric that small sun gear is, and outer peripheral surface is provided with tooth, and inner peripheral surface is provided with a keyway, is enclosed within on the sprocket wheel minor diameter, be connected with sprocket wheel by key, and with three planet wheel outer gearings; Three planet wheels are cylindric, outer peripheral surface is provided with tooth, inner peripheral surface is a through hole, three planet wheels are enclosed within on three pins that are embedded on the planet carrier, and can rotate relatively, three planet wheels and small sun gear outer gearing and with big sun gear in mesh, small sun gear and three planet wheels are in same plane, thickness is identical and be contained in the big sun gear; Described three pins are cylindric, and are in hexagonal angle and evenly distribute and be embedded on the planet carrier, and projection length is slightly less than planet wheel thickness; It is cylindric that planet carrier is, the outer peripheral surface diameter is slightly less than big sun gear internal tooth tip diameter, and thickness is slightly less than the poor of big sun gear and planet wheel thickness, inner peripheral surface is provided with a keyway, planet carrier is enclosed within on the exhaust cam shaft, be connected with exhaust cam shaft by key, and be included in the big sun gear; Big sun gear is the thin walled cylinder shape, and inner peripheral surface is provided with internal tooth, and meshes in three planet wheels, and outer peripheral surface has worm-gear tooth, with the gear on worm outer gearing, but and self-locking, evenly be provided with through hole at interval along position near big sun gear internal tooth; Gear on worm is connected with drive motor; Inside cover is the ladder barrel shape, position along the close circumference of large diameter cylinder evenly is provided with tapped hole at interval, inside cover is enclosed within on the sprocket wheel small diameter cylinder, and can rotate relatively and occupy between sprocket wheel large diameter cylinder and the small sun gear, inside cover has a side of small diameter cylinder to sprocket wheel large diameter cylinder side, and inside cover does not have a side of small diameter cylinder to big sun gear, small sun gear and planet wheel; It is flat cylindric that outboard cover is, and evenly is provided with through hole along cylinder at interval near the part of circumference, and outboard cover is enclosed within on the exhaust cam shaft, and can rotate relatively, and a side is to big sun gear, small sun gear and planet wheel; The corresponding respectively bolt that is provided with cooperates with tapped hole on the inside cover by the through hole on through hole on the outboard cover and the big sun gear; Pad is enclosed within on the exhaust cam shaft to contact with a ladder surface on the exhaust cam shaft and contacts with outboard cover simultaneously, and can rotate relatively; Locking nut is locked at pad on the exhaust cam shaft; Sprocket wheel is connected with crankshaft sprocket by chain; The setting of exhaust cam shaft, cam, outlet valve, cylinder block, gas exhaust manifold, piston, suction valve, intake manifold, bent axle, crankshaft sprocket, chain is identical with conventional engines.
The adjustable device of raising engine braking power and braking power stepless that the utility model provides is to constitute first input part by sprocket wheel and small sun gear, three planet wheels and big sun gear, constitute second input part by drive motor and worm screw, worm gear and big sun gear, it is phase control division, constitute common carry-out part by planet carrier and exhaust cam shaft, it utilizes first input part that crankshaft rotating motion is outputed on the exhaust cam shaft by the relation of velocity ratio 2 and the required motion of exhaust cam shaft when finishing the motor proper functioning; Utilize in addition second input part with the angle of swing of motor by greater than 30, the relation of velocity ratio less than 350 output on the exhaust cam shaft and when finishing motor and working as braking device the required phase angle of exhaust cam shaft change.
The beneficial effects of the utility model are: this device is to adjust braking force and obtain big braking force by the phase place that changes exhaust cam shaft, therefore, can under the situation that does not change available engine cam, camshaft, suction valve, exhaust structure and inlet and outlet opening of valves frequency, realize purpose by simple phase adjustment operations.In addition, this device big sun gear when the motor proper functioning is fixed, and the angle of swing of phase change angle and drive motor angle of swing or big sun gear was proportional when motor was worked as braking device, therefore can judge the exhaust cam shaft phase changing capacity intuitively, help to judge and the control phase variable quantity.This installs second input part, and promptly phase control division has auto-lock function, when promptly second input part has input phase changing capacity is remained unchanged.Because therefore described apparatus features place is fit to be applied in and controls camshaft phase on the engine cam very much.It is simple in structure, and is reasonable in design, and therefore reliable performance is with a wide range of applications.
Description of drawings
Fig. 1 is the external structure schematic representation of the utility model device.
Fig. 2 is the utility model device exploded perspective view.
Fig. 3 is the utility model device lateral sectional view.
Fig. 4 is the utility model device and outlet valve and bent axle interconnected relationship figure.
To be the utility model device stop and phase place advance angle longitudinal sectional view of phase relationship between big sun gear and the planet carrier when being 0 ° at sprocket wheel Fig. 5.
To be the utility model device stop and phase place advance angle longitudinal sectional view of phase relationship between big sun gear and the planet carrier when being 90 ° at sprocket wheel Fig. 6.
To be the utility model device stop and the phase place advance angle is 0 ° of longitudinal sectional view of phase relationship between big sun gear and planet carrier during angle between 90 ° at sprocket wheel Fig. 7.
Fig. 8 is suction valve and the exhaust valve opening phase diagram when being 0 ° of the utility model device phase place advance angle;
Fig. 9 is the utility model device phase place advance angle motor acting schematic representation when being 0 °.
Figure 10 is suction valve and the exhaust valve opening phase diagram when being 90 ° of the utility model device phase place advance angle;
Figure 11 is the utility model device phase place advance angle motor acting schematic representation when being 90 °.
Figure 12 is that the utility model device phase place advance angle is 0 ° of suction valve and exhaust valve opening phase diagram during angle between 90 °;
Figure 13 is that the utility model device phase place advance angle is 0 ° of motor acting schematic representation during angle between 90 °.
Figure 14 is the engine braking apparatus outlet valve drive part structural representation of prior art.
Abscissa is represented crankshaft angles among Fig. 8, Figure 10, Figure 12, and y coordinate is represented air valve opening; B represents the suction valve aperture, and C represents exhaust valve opening.
Abscissa is represented the exhaust cam shaft angle among Fig. 9, Figure 11, Figure 13, and y coordinate is represented air institute work; Negative value is represented the absorption of air energy, on the occasion of representing air to release energy.
Embodiment
Below in conjunction with drawings and Examples the adjustable device of raising engine braking power and braking power stepless that the utility model provides is elaborated:
As Fig. 1～shown in Figure 13, the adjustable device of raising engine braking power and braking power stepless that the utility model provides comprises: sprocket wheel 1, small sun gear 2, key 3, planet wheel 4, pin 5, planet carrier 6, big sun gear 7, big sun gear internal tooth 8, worm-gear tooth 9, gear on worm 10, drive motor 11, inside cover 12, outboard cover 13, bolt 14, pad 15, locking nut 16, exhaust cam shaft 17, cam 18, outlet valve 19, cylinder block 20, gas exhaust manifold 21, piston 22, suction valve 23, intake manifold 24, bent axle 25, crankshaft sprocket 26, chain 27; Its middle sprocket 1 is the ladder barrel shape and is divided into large-diameter portion and minor diameter, the large-diameter portion circumferential surface is made sprocket tooth, is connected with crankshaft sprocket 26 by chain 27, and the minor diameter circumferential outer surface is provided with a keyway, sprocket wheel 1 is enclosed within on the exhaust cam shaft 17, and can rotate relatively; Small sun gear 2 is cylindric, and outer peripheral surface is provided with tooth, and inner peripheral surface is provided with a keyway, is enclosed within on sprocket wheel 1 minor diameter, be connected with sprocket wheel 1 by key 3, and with three planet wheel 4 outer gearings; Three planet wheels 4 are cylindric, outer peripheral surface is provided with tooth, inner peripheral surface is a through hole, three planet wheels 4 are enclosed within on three pins 5 that are embedded on the planet carrier 6, and can rotate relatively, three planet wheels 4 and small sun gear 2 outer gearings and with big sun gear 7 in engagement, small sun gear 2 and three planet wheels 4 be in same plane and, thickness is identical and be contained in the big sun gear 7; Three pins 5 are cylindric, and are in hexagonal angle and are embedded in evenly distributedly on the planet carrier 6, and projection length is slightly less than planet wheel 4 thickness; Planet carrier 6 is cylindric, the outer peripheral surface diameter is slightly less than big sun gear 7 internal tooth tip diameters, and thickness is slightly less than the poor of big sun gear 7 and planet wheel 4 thickness, inner peripheral surface is provided with a keyway, planet carrier 6 is enclosed within on the exhaust cam shaft 17, be connected with exhaust cam shaft 17 by key 3, and be included in the big sun gear 7; Big sun gear 7 is the thin walled cylinder shape, and inner peripheral surface is provided with internal tooth, with engagement in three planet wheels 4, outer peripheral surface is provided with worm-gear tooth 9, with gear on worm 10 outer gearings, but and self-locking, 3～8 equally distributed through holes be provided with along position near big sun gear internal tooth 8; Gear on worm 10 is connected with drive motor 11; Inside cover 12 is the ladder barrel shape, position along the close circumference of large diameter cylinder is provided with 3～8 equally distributed tapped holes, inside cover 12 is enclosed within on sprocket wheel 1 small diameter cylinder, and can rotate and occupy between sprocket wheel 1 large diameter cylinder and the small sun gear 2 relatively, inside cover 12 has a side of small diameter cylinder to sprocket wheel 1 large diameter cylinder side, and inside cover 12 does not have a side of small diameter cylinder to big sun gear 7, small sun gear 2 and planet wheel 4; It is flat cylindric that outboard cover 13 is, and is provided with 3～8 equally distributed through holes along cylinder near the part of circumference, and outboard cover 13 is enclosed within on the exhaust cam shaft 17, and can rotate relatively, and a side is to big sun gear 7, small sun gear 2 and planet wheel 4; 3～8 bolts 14 cooperate with tapped hole on the inside cover 12 by the through hole on through hole on the outboard cover 13 and the big sun gear 7; Pad 15 is enclosed within on the exhaust cam shaft 17 to contact with a ladder surface on the exhaust cam shaft 17 and contacts with outboard cover 13 simultaneously, and can rotate relatively; Locking nut 16 is locked at pad 15 on the exhaust cam shaft 17; Sprocket wheel 1 is connected with crankshaft sprocket 26 by chain 27.The setting of exhaust cam shaft 17, cam 18, outlet valve 19, cylinder block 20, gas exhaust manifold 21, piston 22, suction valve 23, intake manifold 24, bent axle 25, crankshaft sprocket 26, chain 27 is identical with conventional engines.
The device that the raising engine braking power and braking power stepless that the utility model provides is adjustable satisfies following relation.
If:
The number of teeth of Z1-small sun gear 2, Z1=24 in the present embodiment;
The number of teeth of Z2-planet wheel 4, Z2=12 in the present embodiment;
The number of teeth of the big sun gear 7 of Z3-, Z3=48 in the present embodiment;
The worm gear number of teeth of the big sun gear 2 of Z4-, Z4=44 in the present embodiment;
The number of teeth of Z5-sprocket wheel 1, Z5=16 in the present embodiment;
The number of teeth of Z6-crankshaft sprocket 26, Z6=24 in the present embodiment;
I1-bent axle 25 arrives the velocity ratio with the small sun gear 2 coaxial sprocket wheels that are connected 1;
The big sun gear 7 of i2-fixedly the time with the small sun gear 2 coaxial sprocket wheels that are connected 1 to the velocity ratio of the planet carrier 6 coaxial exhaust cam shafts that are connected 17, promptly during the motor normal working first input part to the velocity ratio of carry-out part;
I3-with the small sun gear 2 coaxial sprocket wheels that are connected 1 fixedly the time big sun gear 7 to the velocity ratio of the planet carrier 6 coaxial exhaust cam shafts that are connected 17, second input part was to the velocity ratio of carry-out part when promptly motor was in the braking working state;
I4-gear on worm 10 is to the velocity ratio of big sun gear 7;
I5-bent axle 25 arrives the velocity ratio with the planet carrier 6 coaxial exhaust cam shafts that are connected 17;
I6-gear on worm 10 arrives the velocity ratio with the planet carrier 6 coaxial exhaust cam shafts that are connected 17;
α-exhaust cam shaft 17 phase change angles;
β-big sun gear 7 angle of swing.
Then: i1=Z5/Z6, i1=16/24 in the present embodiment;
I2=Z3/Z1+1, i2＞2, i2=48/24+1=3 in the present embodiment;
I3=Z1/Z3+1,2＞i3＞1, i3=24/48+1=3/2 in the present embodiment;
I4=Z4/1, common 5≤i4≤70, usual range is 15≤i4≤50, i4=44 in the present embodiment;
I5=i1xi2=2, promptly exhaust cam shaft 17 angular velocity are 1/2 of bent axle 25 angular velocity;
I6=i4xi3, i.e. phase control division velocity ratio, i6=44x3/2=66 in the present embodiment;
β=α xi3 even makes exhaust cam shaft 17 phase places shift to an earlier date the α degree, and 7 of big sun gears should shift to an earlier date direction rotation β degree to phase place; β in the present embodiment=3 α/2.
Be elaborated to realizing the adjustable method of raising engine braking power and braking power stepless below in conjunction with accompanying drawing:
When vehicle needs engine brake power, driver's ato unit braking function at first, stop to spray into fuel, and several strokes of process are with fuel mixture in the inlet manifold 24 and the waste gas emptying in the cylinder, enter the engine brake power adjustment process then, at this moment, Vehicle Controller is exported rotation signals according to the requirement of the braking force that the driver provides by calculating to drive motor 11, comprise the sense of rotation and the rotation number of degrees, drive motor 11 drives gear on worm 10 rotations, gear on worm 10 is meshed with worm-gear tooth 9 and drives big sun gear 7 rotations, the angle of swing of big sun gear 7 outputs on the exhaust cam shaft 17 by planet wheel 4 and planet carrier 6, as Fig. 6, shown in Figure 7, big sun gear 7 rotation β angles, exhaust cam shaft 17 rotation alpha angles, exhaust cam shaft 17 phase places change outlet valve 19 unlatching intervals are changed between exhaust stroke and expansion stroke, be that exhaust cam shaft 17 phase place advance angles change between 0 ° to 90 °, when outlet valve 19 open interval identical with the exhaust stroke interval, braking force minimum when promptly exhaust cam shaft 17 phase place advance angles are 0 °; When outlet valve 19 open interval identical with the expansion stroke interval, braking force maximum when promptly exhaust cam shaft 17 phase place advance angles are 90 °; Open segment part when outlet valve 19 and be in that part is within the expansion stroke within the exhaust stroke, braking force occupy between minimum braking force and the maximum brake power when promptly exhaust cam shaft 17 phase place advance angles were 0 ° of angle between 90 °.
The corresponding minimum braking force of Fig. 8 Fig. 9; As shown in Figure 8, suction valve 23 and outlet valve 19 open interval and traditional motor when identical motor do work curve as shown in Figure 9, be that suction stroke suction valve 23 is opened, outlet valve 19 is closed from suction valve 23 air-breathing, compression stroke suction valve 23 and outlet valve 19 are closed air and are compressed the absorption energy, expansion stroke suction valve 23 and outlet valve 19 closes compression air expansions do work to piston, exhaust stroke suction valve 23 cuts out, outlet valve 19 is opened from outlet valve 19 exhausts, piston 22 pressurized air to the air acting once in the said process, pressurized air expands to piston 22 actings once, total braking force minimum.
The corresponding maximum brake power of Figure 10 Figure 11; As shown in figure 10, suction valve 23 is opened interval identical with traditional motor, motor acting curve as shown in figure 11 when outlet valve 19 unlatching intervals were on the expansion stroke interval, be that suction stroke suction valve 23 is opened, outlet valve 19 is closed from suction valve 23 air-breathing, compression stroke suction valve 23 and outlet valve 19 are closed air and are compressed the absorption energy, expansion stroke suction valve 23 cuts out, outlet valve 19 is opened pressurized air and is sucked from outlet valve 19 again after outlet valve 19 discharges, exhaust stroke suction valve 23 and outlet valve 19 are closed air and are compressed and absorb energy again, and next suction stroke pressurized air temporarily enters earlier in the inlet manifold 24 by suction valve 23 and sucks after the step-downs again; Piston 22 pressurized air are to air acting twice in the said process, and non-compressed air is to piston 22 actings, total braking force maximum.
Braking force in the middle of Figure 12 Figure 13 correspondence; As shown in figure 12, suction valve 23 is opened interval identical with traditional motor, outlet valve 19 is opened segment part and is within the expansion stroke, motor acting curve as shown in figure 13 when another part was within the exhaust stroke, be that suction stroke suction valve 23 is opened, outlet valve 19 is closed from suction valve 23 air-breathing, compression stroke suction valve 23 and outlet valve 19 are closed air and are compressed the absorption energy, expansion stroke suction valve 23 cuts out, outlet valve 19 closes closed interval pressurized air expansion piston is done work, outlet valve 19 is opened interval pressurized air and is discharged by outlet valve 19, exhaust stroke suction valve 23 cuts out, outlet valve 19 is opened interval air and is discharged by outlet valve 19, outlet valve 19 closes the closed interval air and is compressed the absorption energy, piston 22 does work 1 time to air in compression stroke in the said process, pressurized air does work to piston 22 at the partial section of expansion stroke, piston 22 does work to air at the partial section of exhaust stroke, and total braking force occupy between minimum braking force and the maximum brake power.
In sum, exhaust cam shaft 17 phase place advance angles are near 0 °, and then braking force is near minimum value; Exhaust cam shaft 17 phase place advance angles are near 90 °, and then braking force is near maximum value; Exhaust cam shaft 17 phase place advance angles occupy between 0 ° to 90 °, and then braking force also occupy between minimum value and the maximum value.
Those of ordinary skills should be understood that the utility model can carry out various distortion and improvement under the situation that does not break away from the utility model design scope or essence.For example, driving the mechanism of big sun gear 7 rotations can also be sprocket wheel, link chain mechanism except that the worm gear of the utility model discussion, worm mechanism, perhaps gear, rackwork, and can not break away from the scope of the claimed device of the utility model.The size of various parts, quantity and design can change, and can not break away from the scope of the claimed device of the utility model.
Claims (1)
1. one kind is improved the adjustable device of engine braking power and braking power stepless, it is characterized in that this device comprises: sprocket wheel, small sun gear, key, planet wheel, pin, planet carrier, big sun gear, worm-gear toothing, gear on worm, drive motor, inside cover, outboard cover, bolt, pad, locking nut, exhaust cam shaft, cam, outlet valve, cylinder block, gas exhaust manifold, piston, suction valve, intake manifold, bent axle, crankshaft sprocket, chain; Its middle sprocket is the ladder barrel shape and is divided into large-diameter portion and minor diameter, and the large-diameter portion circumferential surface is made sprocket tooth, is connected with crankshaft sprocket by chain, and the minor diameter circumferential outer surface is provided with a keyway, and sprocket wheel is enclosed within on the exhaust cam shaft, and can rotate relatively; It is cylindric that small sun gear is, and outer peripheral surface is provided with tooth, and inner peripheral surface is provided with a keyway, is enclosed within on the sprocket wheel minor diameter, be connected with sprocket wheel by key, and with three planet wheel outer gearings; Three planet wheels are cylindric, outer peripheral surface is provided with tooth, inner peripheral surface is a through hole, three planet wheels are enclosed within on three pins that are embedded on the planet carrier, and can rotate relatively, three planet wheels and small sun gear outer gearing and with big sun gear in mesh, small sun gear and three planet wheels are in same plane, thickness is identical and be contained in the big sun gear; Described three pins are cylindric, and are in hexagonal angle and evenly distribute and be embedded on the planet carrier, and projection length is slightly less than planet wheel thickness; It is cylindric that planet carrier is, the outer peripheral surface diameter is slightly less than big sun gear internal tooth tip diameter, and thickness is slightly less than the poor of big sun gear and planet wheel thickness, inner peripheral surface is provided with a keyway, planet carrier is enclosed within on the exhaust cam shaft, be connected with exhaust cam shaft by key, and be included in the big sun gear; Big sun gear is the thin walled cylinder shape, and inner peripheral surface is provided with internal tooth, and meshes in three planet wheels, and outer peripheral surface has worm-gear tooth, with the gear on worm outer gearing, but and self-locking, evenly be provided with through hole at interval along position near big sun gear internal tooth; Gear on worm is connected with drive motor; Inside cover is the ladder barrel shape, position along the close circumference of large diameter cylinder evenly is provided with tapped hole at interval, inside cover is enclosed within on the sprocket wheel small diameter cylinder, and can rotate relatively and occupy between sprocket wheel large diameter cylinder and the small sun gear, inside cover has a side of small diameter cylinder to sprocket wheel large diameter cylinder side, and inside cover does not have a side of small diameter cylinder to big sun gear, small sun gear and planet wheel; It is flat cylindric that outboard cover is, and evenly is provided with through hole along cylinder at interval near the part of circumference, and outboard cover is enclosed within on the exhaust cam shaft, and can rotate relatively, and a side is to big sun gear, small sun gear and planet wheel; The corresponding respectively bolt that is provided with cooperates with tapped hole on the inside cover by the through hole on through hole on the outboard cover and the big sun gear; Pad is enclosed within on the exhaust cam shaft to contact with a ladder surface on the exhaust cam shaft and contacts with outboard cover simultaneously, and can rotate relatively; Locking nut is locked at pad on the exhaust cam shaft; Sprocket wheel is connected with crankshaft sprocket by chain; The setting of exhaust cam shaft, cam, outlet valve, cylinder block, gas exhaust manifold, piston, suction valve, intake manifold, bent axle, crankshaft sprocket, chain is identical with conventional engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200958694U CN201027554Y (en) | 2007-04-26 | 2007-04-26 | Device for enhancing engine braking power and stepless adjusting braking power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200958694U CN201027554Y (en) | 2007-04-26 | 2007-04-26 | Device for enhancing engine braking power and stepless adjusting braking power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201027554Y true CN201027554Y (en) | 2008-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200958694U Expired - Fee Related CN201027554Y (en) | 2007-04-26 | 2007-04-26 | Device for enhancing engine braking power and stepless adjusting braking power |
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| CN (1) | CN201027554Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195134A (en) * | 2015-05-29 | 2016-12-07 | 博格华纳公司 | Spring-loaded planetary gear set |
-
2007
- 2007-04-26 CN CNU2007200958694U patent/CN201027554Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195134A (en) * | 2015-05-29 | 2016-12-07 | 博格华纳公司 | Spring-loaded planetary gear set |
| CN106195134B (en) * | 2015-05-29 | 2020-10-16 | 博格华纳公司 | Spring loaded planetary gear assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20120426 |