CN205478043U - Plunger type injection pump of variable fuel feeding of multiplex condition - Google Patents
Plunger type injection pump of variable fuel feeding of multiplex condition Download PDFInfo
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- CN205478043U CN205478043U CN201620291220.9U CN201620291220U CN205478043U CN 205478043 U CN205478043 U CN 205478043U CN 201620291220 U CN201620291220 U CN 201620291220U CN 205478043 U CN205478043 U CN 205478043U
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Abstract
The utility model provides a plunger type injection pump of variable fuel feeding of multiplex condition mainly includes plunger matching parts, the oil mass adjusting device that comprises rack, gear and pivot, the drive selecting arrangement who comprises bogie, roof and roof driving lever, the drive auxiliary device who comprises baffle, gyro wheel frame and gyro wheel, the double speed cam drive device who comprises drive shaft, low -speed cam and high -speed cam. Its characteristics utilize three kinds of chutes and height, low -speed cam to realize the variable fuel feeding of multiplex condition. The utility model discloses a plunger effective stroke's multiplex condition is realized and adjusts that fine setting and buffering oil spout are realized to two curve type chutes promptly to three kinds of chutes of plunger side, convenient linear the regulation and the accurate control is realized to the linear type chute, and quick emergent the regulation is realized to fast open form chute, through the magnetic block of gear breach department and the magnetic force strip on the plunger bushing, the location of realizing three kinds of chutes, through driving epaxial height, low -speed cam, governor pump gear oil frequency realizes the variable fuel feeding under the multiplex condition.
Description
Technical field
This utility model relates to the jerk fuel injection pump of a kind of multi-state variable oil-supply, particularly relates to a kind of three kinds of skewed slots by plunger side, it is achieved the multi-state regulation of plunger effective stroke；By hyperbolic-type skewed slot, it is achieved the fine setting of plunger effective stroke and buffering oil spout；By linear type skewed slot, it is achieved the convenient linear regulation of plunger effective stroke and accurately controlling；By fast open form skewed slot, it is achieved the most emergent regulation of plunger effective stroke；By the magnetic force block at notch gear and the magnetic strip on plunger bushing, it is achieved the location of three kinds of skewed slots；By the Lower speed cam in drive shaft and High speed cam, the pump oil frequency of adjustable column plug injection pump, it is achieved the variable oil-supply under multi-state, belong to the technical research field of jerk fuel injection pump.
Background technology
Injection pump for level pressure, regularly, quantitative to fuel injector conveying high-pressure diesel oil, and jerk fuel injection pump is because of functional, reliable operation, is applied by most diesel oil machine.But the unicity due to current jerk fuel injection pump structure, cause problems with: one is that plunger skewed slot shape is fixed non-adjustable, cause plunger effective stroke can only present single characteristic, the changeable regulation of multi-state lower plunger effective travel cannot be met, and multi-state lower plunger effective travel regulate coupling in time, i.e. regulate distributive value in time according to different operating modes, can effectively reduce fuel consumption；Two is that pump oil frequency is fixed, jerk fuel injection pump mainly drives plunger upward and downward by cam mechanism at present, although the upper and lower movement velocity of pilot plunger can be carried out by changing the rotating speed of cam, but the cost that rotating speed improves is sharply increasing of energy consumption, and this kind of method fails substantially change oil spout frequency and reach the purpose of distributive value regulation under multi-state.
Therefore, the plunger skewed slot shape the most generally existed for existing jerk fuel injection pump fixes non-adjustable, cannot to realize multi-state lower plunger effective travel changeable regulation, and the problem such as pump oil frequency is fixed, the variable oil-supply that cannot realize under multi-state, should consider from the overall structure of jerk fuel injection pump, design and meet a kind of jerk fuel injection pump of variable oil-supply under multi-state.
Summary of the invention
This utility model fixes non-adjustable, cannot to realize multi-state lower plunger effective travel changeable regulation for the plunger skewed slot shape that existing jerk fuel injection pump the most generally exists, and the problem such as pump oil frequency is fixed, the variable oil-supply that cannot realize under multi-state, it is provided that the jerk fuel injection pump of a kind of a kind of multi-state variable oil-supply that can effectively solve the problems referred to above.
The jerk fuel injection pump of a kind of multi-state variable oil-supply of the present utility model is by the following technical solutions:
A kind of jerk fuel injection pump of multi-state variable oil-supply, mainly include the plunger matching parts being made up of plunger and plunger bushing, the oil controller being made up of tooth bar, gear and rotating shaft, the driving being made up of bogie, top board and top board driving lever selects device, the driving auxiliary device being made up of guide plate, turning rolls and roller, the double speed cam driving gear being made up of drive shaft, Lower speed cam and High speed cam；Described plunger is coaxially mounted in plunger bushing, and plunger center has centre bore, and plunger side has hyperbolic-type skewed slot, linear type skewed slot and fast open form skewed slot successively, and each skewed slot bottom communicates with centre bore respectively；Having oilhole on described plunger bushing, oilhole cross section is interior little trapezium structure big, outer；Described rotating shaft upper end is fixed on plunger, and rotating shaft lower end is provided with interior concave station, and rotating shaft has the gear fixing by flat key, and rack and pinion engages, and tooth bar two ends are provided with tooth bar gag lever post；Described bogie is cuboid, it is provided with down boss at bogie upper end center, the pine of falling boss is enclosed within rotating shaft lower end in concave station, and bogie countershaft rotates without interfering, bogie lower end symmetry has 2 square blind holes, have strip passage between 2 square blind holes, and strip passage two ends exceed square blind hole respectively and form inner convex platform；Described top board is cuboid, and top board driving lever is arranged on top board center, and top board plate drives top board left and right movement in single-degree-of-freedom in the strip passage of bogie, only stops single guide plate when top board arrives at inner convex platform；Described guide plate is 2, and guide plate cross section is square, and both sides, guide plate lower end are provided with boss；Described turning rolls is concave structure, and both sides, turning rolls upper end are provided with boss, and turning rolls boss is connected by bolt, packing ring and nut with guide plate boss, is provided with cushion pad between turning rolls and guide plate；Described roller is arranged on turning rolls by bearing pin, and roller is around bearing pin rotation；Described Lower speed cam and High speed cam are fixing on the driving shaft by woodruff key respectively, and Lower speed cam be list cam structure, and High speed cam is double-cam structure and its two projection is 180 °.
The gradient of described hyperbolic-type skewed slot is in trend anxious after first delaying, and the gradient of linear type skewed slot is definite value, and the gradient of fast open form skewed slot delays trend after the most anxious.
Described hyperbolic-type skewed slot, linear type skewed slot and fast the circumferentially-spaced of open form skewed slot are 120 °.
Described gear is provided with breach every 120 °, gap position is corresponding with the upper port of hyperbolic-type skewed slot, linear type skewed slot and fast open form skewed slot respectively, indentation, there is provided with skewed slot anchor point, skewed slot anchor point is equipped with magnetic force block, wherein shaped form skewed slot anchor point is provided with the outside of 1 magnetic force block and magnetic force block is positive pole, linear type skewed slot anchor point is provided with the outside of 3 magnetic force blocks and 3 magnetic force blocks and is followed successively by positive pole, negative pole and positive pole, and the outside that fast open form skewed slot anchor point is provided with 2 magnetic force blocks and 2 magnetic force blocks is followed successively by positive pole and negative pole.
Being provided with plunger bushing anchor point at described plunger bushing lower center, plunger bushing anchor point is provided with 1 magnetic strip, reaches at gear under the positive pole of magnetic strip, and corresponding with the magnetic force block at notch gear.
This utility model has hyperbolic-type skewed slot, linear type skewed slot and fast open form skewed slot successively in plunger side, variable oil-supply under multi-state when realizing driving fixing by this design, i.e. realize the multi-state regulation of plunger effective stroke, as when jerk fuel injection pump needs fine setting and buffering oil spout to, plunger rotary forwarded hyperbolic-type skewed slot；When jerk fuel injection pump needs linear regulation distributive value to, plunger rotary can be forwarded linear type skewed slot；When jerk fuel injection pump needs urgent regulation distributive value to, plunger rotary can be forwarded fast open form skewed slot.
This utility model has hyperbolic-type skewed slot in plunger side, fine setting and the buffering oil spout of plunger effective stroke is realized by this design, i.e. when needing the distributive value finely tuning jerk fuel injection pump under certain operating mode, only to plunger rotary need to be forwarded hyperbolic-type skewed slot, feature of first delaying in utilizing the hyperbolic-type skewed slot gradient first to delay the most suddenly, though the i.e. starting stage rotates larger angle to plunger, but plunger effective stroke relative variation is the most small, utilize this feature to finely tune plunger effective stroke, thus realize finely tune distributive value purpose；Additionally, under some operating mode, wish that plunger rotary, on the impact impact minimum of element in follow-up equipment, the most also can be forwarded to hyperbolic-type skewed slot, when utilizing starting stage plunger to rotate larger angle by the change of distributive value, plunger effective stroke varies less, buffer oil spout with this, prevent oil spout from impacting, after the change of distributive value is adapted to by follow-up equipment element, only need to rotate smaller angle can make plunger effective stroke present large change, meets and uses requirement.
This utility model has linear type skewed slot in plunger side, realize the convenient linear regulation of plunger effective stroke by this design and accurately control, i.e. when needing the distributive value of linear regulation jerk fuel injection pump under certain operating mode, only to plunger rotary need to be forwarded linear type skewed slot, utilizing the linear type skewed slot gradient is the feature of definite value, time i.e. to plunger rotational units angle, plunger effective stroke linearly changes, therefore, during as made plunger effective stroke be adjusted to a certain numerical value, only according to linear corresponding relation, plunger need to be rotated respective angles, can facilitate and accurately control plunger effective stroke.
This utility model has fast open form skewed slot in plunger side, the most emergent regulation of plunger effective stroke is realized by this design, i.e. when needing jerk fuel injection pump quickly distributive value to be increased or decreased under certain operating mode, only to plunger rotary need to be forwarded fast open form skewed slot, the most anxious feature in delaying after utilizing the fast open form skewed slot gradient the most anxious, i.e. though the starting stage rotates smaller angle to plunger, but plunger effective stroke changes fairly obvious relatively, utilize this feature to adjust plunger effective stroke soon, thus realize quickly being increased or decreased the purpose of distributive value.
It is interior little trapezium structure big, outer that oilhole is designed as cross section by this utility model, the F.F. being realized fuel oil by this design is gone out slowly, the most this outer big sudden change trapezium structure little, interior, make fuel oil when entering injection pump, fuel oil is not only made to present unobstructed flowing, at the unexpected increase of structure, also produce negative pressure, and subsequent fuel is produced the effect accelerating flowing, so that fuel oil rapidly enters in injection pump；When moving on plunger, while compression fuel oil, a part of fuel oil can be made to flow out through oilhole, but the oilhole of this utility model design will make fuel oil realize going out slowly, i.e. when fuel oil flows out, the runner narrowed suddenly not only stops that fuel oil flows out, and also produces high pressure at runner reduction, stop that fuel oil flows out further, thus realize fuel oil and go out slowly.
This utility model is provided with tooth bar gag lever post at tooth bar two ends, when preventing wheel and rack engagement mobile by this design, and gear removal tooth bar.
This utility model be provided with at the notch gear outside corresponding from three kinds of skewed slots different just, negative pole magnetic force block, and magnetic force block is also corresponding with the positive pole of magnetic strip on plunger bushing, the location of three kinds of skewed slots is realized by this design, i.e. because of hyperbolic-type skewed slot anchor point, the magnetic force block that 1 outside is positive pole is installed, when plunger rotary forwards hyperbolic-type skewed slot to, magnetic force block positive pole on hyperbolic-type skewed slot anchor point and the magnetic strip positive pole on plunger bushing anchor point produce the same sex and repel each other, and it is the most overhanging to drive magnetic strip to occur, therefore the location of hyperbolic-type skewed slot can be realized by the change in location of detection magnetic strip；Equally, be followed successively by the magnetic force block of positive pole, negative pole and positive pole because linear type skewed slot anchor point is provided with 3 outsides, therefore when magnetic strip occur overhanging, inside contract, overhanging time, illustrate that plunger rotary forwards linear type skewed slot to；Equally, be followed successively by the magnetic force block of positive pole, negative pole because fast open form skewed slot anchor point is provided with 2 outsides, therefore when magnetic strip occur overhanging, inside contract time, illustrate that plunger rotary forwards fast open form skewed slot to.
Bogie pine is enclosed within rotating shaft lower end by this utility model, prevents bogie from interfering axis of rotation by this design.
This utility model is provided with cushion pad between turning rolls and guide plate, eliminates the rigid shock between turning rolls and guide plate by this design, extends its service life.
This utility model is provided with Lower speed cam and High speed cam on the driving shaft, the variable oil-supply realized when plunger effective stroke is fixed under multi-state by this design, the i.e. pump oil frequency of adjustable column plug injection pump, when running at a low speed such as automobile, less to fuel demand, top board can be moved to the left, Lower speed cam is made to drive plunger to move up and down by guide plate, bogie and rotating shaft, because Lower speed cam is single cam structure, drive shaft rotates a circle, jerk fuel injection pump only produces Primary pumps oil, and operating frequency is relatively low, and fuel injection amount is relatively fewer；And when galloping, more to fuel demand, top board can be moved right, making High speed cam drive plunger to move up and down by guide plate, bogie and rotating shaft, be double-cam structure because of High speed cam and its two projection is 180 °, drive shaft rotates a circle, jerk fuel injection pump can produce secondary pump oil, operating frequency is high, and fuel injection amount is the most, meets and runs at high speed.
The beneficial effects of the utility model are: by three kinds of skewed slots of plunger side, it is achieved the multi-state regulation of plunger effective stroke；By hyperbolic-type skewed slot, it is achieved the fine setting of plunger effective stroke and buffering oil spout；By linear type skewed slot, it is achieved the convenient linear regulation of plunger effective stroke and accurately controlling；By fast open form skewed slot, it is achieved the most emergent regulation of plunger effective stroke；By the magnetic force block at notch gear and the magnetic strip on plunger bushing, it is achieved the location of three kinds of skewed slots；By the Lower speed cam in drive shaft and High speed cam, the pump oil frequency of adjustable column plug injection pump, it is achieved the variable oil-supply under multi-state.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the close-up schematic view of oilhole in this utility model.
Fig. 3 is the expansion schematic diagram of three kinds of skewed slots in this utility model.
Fig. 4 is this utility model middle gear, the schematic front view of tooth bar engagement place.
Fig. 5 is this utility model middle gear, the schematic top plan view of tooth bar engagement place.
Fig. 6 is the close-up schematic view of this utility model cathetus type skewed slot and plunger bushing location.
Fig. 7 is this utility model centering guide and the close-up schematic view of top board joint.
Fig. 8 is top board and the structural representation of top board driving lever in this utility model.
Fig. 9 is turning rolls and the close-up schematic view of guide plate junction in this utility model.
Figure 10 is the layout schematic diagram of Lower speed cam and High speed cam in this utility model.
Figure 11 is the structural representation of Lower speed cam in this utility model.
Figure 12 is the structural representation of this utility model high speed cam.
Figure 13 is the structural representation that in this utility model, plunger rotates to when fast open form skewed slot and Lower speed cam drive.
Figure 14 is the structural representation that in this utility model, plunger rotates to when hyperbolic-type skewed slot and High speed cam drive.
Wherein: 1, Lower speed cam, 2, drive shaft, 3, guide plate, 4, top board, 5, bogie, 6, rotating shaft, 7, tooth bar, 8, gear, 9, plunger, 10, plunger bushing, 11, oilhole, 12, linear type skewed slot, 13, High speed cam, 14, hyperbolic-type skewed slot, 15, fast open form skewed slot, 16, plunger bushing anchor point, 17, linear type skewed slot anchor point, 18, tooth bar gag lever post, 19, top board driving lever, 20, roller, 21, turning rolls, 22, bolt, 23, nut, 24, packing ring, 25, cushion pad, 26, hyperbolic-type skewed slot anchor point, 27, fast open form skewed slot anchor point.
Detailed description of the invention
Embodiment:
As shown in Figure 1, the jerk fuel injection pump of a kind of multi-state variable oil-supply of the present utility model, mainly include the plunger matching parts being made up of plunger 9 and plunger bushing 10, the oil controller being made up of tooth bar 7, gear 8 and rotating shaft 6, the driving being made up of bogie 5, top board 4 and top board driving lever 19 selects device, the driving auxiliary device being made up of guide plate 3, turning rolls 21 and roller 20, the double speed cam driving gear being made up of drive shaft 2, Lower speed cam 1 and High speed cam 13.
Shown in Fig. 2, oilhole 11 is had on plunger bushing 10, oilhole 11 cross section is interior little trapezium structure big, outer, and during work, this design realizes the F.F. of fuel oil and goes out slowly, the most this outer big sudden change trapezium structure little, interior, make fuel oil when entering injection pump, not only make fuel oil present unobstructed flowing, at the unexpected increase of structure, also produce negative pressure, and subsequent fuel is produced the effect accelerating to flow, so that fuel oil rapidly enters in injection pump；When moving on plunger 9, while compression fuel oil, a part of fuel oil can be made to flow out through oilhole 11, but the oilhole 11 of this utility model design will make fuel oil realize going out slowly, i.e. when fuel oil flows out, the runner narrowed suddenly not only stops that fuel oil flows out, and also produces high pressure at runner reduction, stop that fuel oil flows out further, thus realize fuel oil and go out slowly.
Shown in Fig. 3, plunger 9 is coaxially mounted in plunger bushing 10, and plunger 9 center has centre bore, and plunger 9 side has hyperbolic-type skewed slot 14, linear type skewed slot 12 and fast open form skewed slot 15 successively, and each skewed slot bottom communicates with centre bore respectively；The gradient of hyperbolic-type skewed slot 14 is in trend anxious after first delaying, and the gradient of linear type skewed slot 12 is definite value, and the gradient of fast open form skewed slot 15 delays trend after the most anxious；Hyperbolic-type skewed slot 14, linear type skewed slot 12 and fast the circumferentially-spaced of open form skewed slot 15 are 120 °.
Hyperbolic-type skewed slot 14, linear type skewed slot 12 and fast open form skewed slot 15 is had successively in plunger 9 side, during work, variable oil-supply under multi-state when this design can realize driving fixing, i.e. realize the multi-state regulation of plunger 9 effective travel, as when jerk fuel injection pump needs fine setting and buffering oil spout, plunger 9 rotated to hyperbolic-type skewed slot 14；When jerk fuel injection pump needs linear regulation distributive value, plunger 9 can be rotated to linear type skewed slot 12；When jerk fuel injection pump needs urgent regulation distributive value, plunger 9 can be rotated to fast open form skewed slot 15.
Hyperbolic-type skewed slot 14 is had in plunger 9 side, during work, this design can realize fine setting and the buffering oil spout of plunger 9 effective travel, i.e. when needing the distributive value finely tuning jerk fuel injection pump under certain operating mode, only plunger 9 need to be rotated to hyperbolic-type skewed slot 14, feature of first delaying in utilizing hyperbolic-type skewed slot 14 gradient first to delay the most suddenly, though the i.e. starting stage rotates larger angle to plunger 9, but plunger 9 effective travel relative variation is the most small, utilize this feature to finely tune plunger 9 effective travel, thus realize finely tune distributive value purpose；Additionally, under some operating mode, wish that plunger 9, on the impact impact minimum of element in follow-up equipment, the most also can be rotated to hyperbolic-type skewed slot 14, when utilizing starting stage plunger 9 to rotate larger angle by the change of distributive value, plunger 9 effective travel varies less, buffer oil spout with this, prevent oil spout from impacting, after the change of distributive value is adapted to by follow-up equipment element, only need to rotate smaller angle can make plunger 9 effective travel present large change, meets and uses requirement.
Linear type skewed slot 12 is had in plunger 9 side, during work, this design can realize the convenient linear regulation of plunger 9 effective travel and accurately control, i.e. when needing the distributive value of linear regulation jerk fuel injection pump under certain operating mode, only plunger 9 need to be rotated to linear type skewed slot 12, utilizing linear type skewed slot 12 gradient is the feature of definite value, time i.e. to plunger 9 rotational units angle, plunger 9 effective travel linearly changes, therefore, during as made plunger 9 effective travel be adjusted to a certain numerical value, only according to linear corresponding relation, plunger 9 need to be rotated respective angles, can facilitate and accurately control plunger 9 effective travel.
Fast open form skewed slot 15 is had in plunger 9 side, during work, this design realizes the most emergent regulation of plunger 9 effective travel, i.e. when needing jerk fuel injection pump quickly distributive value to be increased or decreased under certain operating mode, only plunger 9 need to be rotated to fast open form skewed slot 15, the most anxious feature in delaying after utilizing fast open form skewed slot 15 gradient the most anxious, i.e. though the starting stage rotates smaller angle to plunger 9, but plunger 9 effective travel changes fairly obvious relatively, utilize this feature to adjust plunger 9 effective travel soon, thus realize quickly being increased or decreased the purpose of distributive value.
Shown in Fig. 4, Fig. 5 and Fig. 6, rotating shaft 6 upper end is fixed on plunger 9, and rotating shaft 6 lower end is provided with interior concave station, and rotating shaft 6 has the gear 8 fixing by flat key, and tooth bar 7 engages with gear 8, and tooth bar 7 two ends are provided with tooth bar gag lever post 18.Being provided with tooth bar gag lever post 18 at tooth bar 7 two ends, during work, when this design prevents gear 8 from engaging mobile with tooth bar 7, gear 8 removes tooth bar 7.
Gear 8 is provided with breach every 120 °, gap position is corresponding with the upper port of hyperbolic-type skewed slot 14, linear type skewed slot 12 and fast open form skewed slot 15 respectively, indentation, there is provided with skewed slot anchor point, skewed slot anchor point is equipped with magnetic force block, wherein hyperbolic-type skewed slot anchor point 26 is provided with the outside of 1 magnetic force block and magnetic force block is positive pole, linear type skewed slot anchor point 17 is provided with the outside of 3 magnetic force blocks and 3 magnetic force blocks and is followed successively by positive pole, negative pole and positive pole, and the outside that fast open form skewed slot anchor point 27 is provided with 2 magnetic force blocks and 2 magnetic force blocks is followed successively by positive pole and negative pole.
Being provided with plunger bushing anchor point 16 at plunger bushing 10 lower center, plunger bushing anchor point 16 is provided with 1 magnetic strip, reaches at gear 8 under the positive pole of magnetic strip, and corresponding with the magnetic force block of gear 8 indentation, there.
Be provided with at the gear 8 breach outside corresponding from three kinds of skewed slots different just, negative pole magnetic force block, and magnetic force block is also corresponding with the positive pole of magnetic strip on plunger bushing 10, during work, this design realizes the location of three kinds of skewed slots, i.e. because of hyperbolic-type skewed slot anchor point 26, the magnetic force block that 1 outside is positive pole is installed, when plunger 9 rotates to hyperbolic-type skewed slot 14, magnetic force block positive pole on hyperbolic-type skewed slot anchor point 26 and the magnetic strip positive pole on plunger bushing anchor point 16 produce the same sex and repel each other, and it is the most overhanging to drive magnetic strip to occur, therefore the location of hyperbolic-type skewed slot 14 can be realized by the change in location of detection magnetic strip；Equally, be followed successively by the magnetic force block of positive pole, negative pole and positive pole because linear type skewed slot anchor point 17 is provided with 3 outsides, therefore when magnetic strip occur overhanging, inside contract, overhanging time, illustrate that plunger 9 rotates to linear type skewed slot 12；Equally, be followed successively by the magnetic force block of positive pole, negative pole because fast open form skewed slot anchor point 27 is provided with 2 outsides, therefore when magnetic strip occur overhanging, inside contract time, illustrate that plunger 9 rotates to fast open form skewed slot 15.
Shown in Fig. 7, Fig. 8, Fig. 9, bogie 5 is in cuboid, it is provided with down boss at bogie 5 upper end center, the pine of falling boss is enclosed within rotating shaft 6 lower end in concave station, and bogie 5 countershaft 6 rotates without interfering, bogie 5 lower end symmetry has 2 square blind holes, has strip passage between 2 square blind holes, and strip passage two ends exceed square blind hole respectively and form inner convex platform；Top board 4 is in cuboid, and top board driving lever 19 is arranged on top board 4 center, and top board plate 19 drives top board 4 left and right movement in single-degree-of-freedom in the strip passage of bogie 5, only stops single guide plate 3 when top board 4 arrives at inner convex platform；Guide plate 3 is 2, and guide plate 3 cross section is square, and both sides, guide plate 3 lower end are provided with boss；Turning rolls 21 is concave structure, both sides, turning rolls 21 upper end are provided with boss, turning rolls 21 boss is connected by bolt 22, packing ring 24 and nut 23 with guide plate 3 boss, cushion pad 25 is installed between turning rolls 21 and guide plate 3, during work, cushion pad 25 can eliminate the rigid shock between turning rolls 21 and guide plate 3, extends its service life；Roller 20 is arranged on turning rolls 21 by bearing pin, and roller 20 is around bearing pin rotation.
Shown in Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Lower speed cam 1 and High speed cam 13 are fixing on driving shaft 2 by woodruff key respectively, and Lower speed cam 1 be list cam structure, and High speed cam 13 is double-cam structure and its two projection is 180 °.
Lower speed cam 1 and High speed cam 13 are installed on driving shaft 2, during work, this design realizes variable oil-supply when plunger 9 effective travel is fixed under multi-state, the i.e. pump oil frequency of adjustable column plug injection pump, when running at a low speed such as automobile, less to fuel demand, top board 4 can be moved to the left, Lower speed cam 1 is made to drive plunger 9 to move up and down by guide plate 3, bogie 5 and rotating shaft 6, because Lower speed cam 1 is single cam structure, drive shaft 2 rotates a circle, and jerk fuel injection pump only produces Primary pumps oil, operating frequency is relatively low, and fuel injection amount is relatively fewer；And when galloping, more to fuel demand, top board 4 can be moved right, making High speed cam 13 drive plunger 9 to move up and down by guide plate 3, bogie 5 and rotating shaft 6, be double-cam structure because of High speed cam 13 and its two projection is 180 °, drive shaft 2 rotates a circle, jerk fuel injection pump can produce secondary pump oil, operating frequency is high, and fuel injection amount is the most, meets and runs at high speed.
Claims (5)
1. the jerk fuel injection pump of a multi-state variable oil-supply, mainly include the plunger matching parts being made up of plunger and plunger bushing, the oil controller being made up of tooth bar, gear and rotating shaft, the driving being made up of bogie, top board and top board driving lever selects device, the driving auxiliary device being made up of guide plate, turning rolls and roller, the double speed cam driving gear being made up of drive shaft, Lower speed cam and High speed cam；It is characterized in that: described plunger is coaxially mounted in plunger bushing, plunger center has centre bore, and plunger side has hyperbolic-type skewed slot, linear type skewed slot and fast open form skewed slot successively, and each skewed slot bottom communicates with centre bore respectively；Having oilhole on described plunger bushing, oilhole cross section is interior little trapezium structure big, outer；Described rotating shaft upper end is fixed on plunger, and rotating shaft lower end is provided with interior concave station, and rotating shaft has the gear fixing by flat key, and rack and pinion engages, and tooth bar two ends are provided with tooth bar gag lever post；Described bogie is cuboid, it is provided with down boss at bogie upper end center, the pine of falling boss is enclosed within rotating shaft lower end in concave station, and bogie countershaft rotates without interfering, bogie lower end symmetry has 2 square blind holes, have strip passage between 2 square blind holes, and strip passage two ends exceed square blind hole respectively and form inner convex platform；Described top board is cuboid, and top board driving lever is arranged on top board center, and top board plate drives top board left and right movement in single-degree-of-freedom in the strip passage of bogie, only stops single guide plate when top board arrives at inner convex platform；Described guide plate is 2, and guide plate cross section is square, and both sides, guide plate lower end are provided with boss；Described turning rolls is concave structure, and both sides, turning rolls upper end are provided with boss, and turning rolls boss is connected by bolt, packing ring and nut with guide plate boss, is provided with cushion pad between turning rolls and guide plate；Described roller is arranged on turning rolls by bearing pin, and roller is around bearing pin rotation；Described Lower speed cam and High speed cam are fixing on the driving shaft by woodruff key respectively, and Lower speed cam be list cam structure, and High speed cam is double-cam structure and its two projection is 180 °.
The jerk fuel injection pump of a kind of multi-state variable oil-supply the most as claimed in claim 1, it is characterised in that: the gradient of described hyperbolic-type skewed slot is in trend anxious after first delaying, and the gradient of linear type skewed slot is definite value, and the gradient of fast open form skewed slot delays trend after the most anxious.
The jerk fuel injection pump of a kind of multi-state variable oil-supply the most as claimed in claim 1, it is characterised in that: described hyperbolic-type skewed slot, linear type skewed slot and fast the circumferentially-spaced of open form skewed slot are 120 °.
The jerk fuel injection pump of a kind of multi-state variable oil-supply the most as claimed in claim 1, it is characterized in that: described gear is provided with breach every 120 °, gap position respectively with hyperbolic-type skewed slot, linear type skewed slot is corresponding with the upper port of fast open form skewed slot, indentation, there is provided with skewed slot anchor point, skewed slot anchor point is equipped with magnetic force block, wherein shaped form skewed slot anchor point is provided with the outside of 1 magnetic force block and magnetic force block is positive pole, linear type skewed slot anchor point is provided with the outside of 3 magnetic force blocks and 3 magnetic force blocks and is followed successively by positive pole, negative pole and positive pole, the outside that fast open form skewed slot anchor point is provided with 2 magnetic force blocks and 2 magnetic force blocks is followed successively by positive pole and negative pole.
The jerk fuel injection pump of a kind of multi-state variable oil-supply the most as claimed in claim 1, it is characterized in that: at described plunger bushing lower center, be provided with plunger bushing anchor point, plunger bushing anchor point is provided with 1 magnetic strip, reach at gear under the positive pole of magnetic strip, and corresponding with the magnetic force block at notch gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291220.9U CN205478043U (en) | 2016-04-11 | 2016-04-11 | Plunger type injection pump of variable fuel feeding of multiplex condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291220.9U CN205478043U (en) | 2016-04-11 | 2016-04-11 | Plunger type injection pump of variable fuel feeding of multiplex condition |
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| CN205478043U true CN205478043U (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697206A (en) * | 2016-04-11 | 2016-06-22 | 济南大学 | Plunger type oil spraying pump achieving variable oil supply under multiple working conditions |
| CN109098905A (en) * | 2018-10-29 | 2018-12-28 | 中船动力研究院有限公司 | A kind of fuel pump and diesel engine |
-
2016
- 2016-04-11 CN CN201620291220.9U patent/CN205478043U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697206A (en) * | 2016-04-11 | 2016-06-22 | 济南大学 | Plunger type oil spraying pump achieving variable oil supply under multiple working conditions |
| CN109098905A (en) * | 2018-10-29 | 2018-12-28 | 中船动力研究院有限公司 | A kind of fuel pump and diesel engine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20171229 |