CN2672298Y - Mechanical full distance speed regulator - Google Patents
Mechanical full distance speed regulator Download PDFInfo
- Publication number
- CN2672298Y CN2672298Y CN 03250727 CN03250727U CN2672298Y CN 2672298 Y CN2672298 Y CN 2672298Y CN 03250727 CN03250727 CN 03250727 CN 03250727 U CN03250727 U CN 03250727U CN 2672298 Y CN2672298 Y CN 2672298Y
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- speed regulator
- flyball
- speed
- governor
- full distance
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Abstract
The utility model belongs to the field of a speed regulator of an oil jetting pump for a diesel engine, particularly a mechanical full distance type speed regulator used for a straight oil jetting pump. The mechanical full distance type speed regulator is characterized in that a fly hammer adopts a structure of thickened outer margin in the shape with a cylinder with a thin wall, the quality of the single fly hammer is smaller than 260g, and the rotational inertia is bigger than 1268g cm<2>; a speed regulating spring is directly arranged in an inner chamber of the fly hammer; the motion track of the quality center of the fly hammer and the centerline of the speed regulating spring are coincident. The mechanical full distance speed regulator is suitable for being matched with the strength oil jetting pump with PM type low discharge and other small straight oil jetting pumps; the mechanical full distance speed regulator can satisfy requirements that in a light car diesel engine with a small cylinder diameter, the pollution is reduced, the discharge is lowered, high pressure jet and pressurization cold technology are adopted, the idle speed stability is enhanced, and the acceleration performance is improved.
Description
Technical field:
The utility model belongs to the speed regulator field of diesel injection pump, particularly a kind of mechanical variable-speed governor that is used for in-line fuel injection pump.
Background technique:
At the various speed regulators that are used for diesel injection pump fuel delivery control now still based on mechanical centrifugal governor.The RQV variable-speed governor of the R801 variable-speed governor of Japan electric coating company and German Bosch company is the mainstream product that is widely used in various diesel engine for automobile in-line fuel injection pumps.R801 speed regulator wherein is because boundary dimension is less, and speed adjusting performance is good, and has negative correction function and boost compensator, and nearly one, two kind and the quantity of joining diesel engine during the decade progressively increase.(1, " diesel engine fuel jetting " [Japanese] Teng swamp English also, the river closes quiet man work, published in 1988, and Chinese translation was published by China Machine Press in 1992; 2, the external diesel injection pump development of mechanical governor, tranquil great auspicious " external oil pump nozzle " the 1st phase of nineteen eighty-two; 3, the Nippon Denso Ltd. Japan electric coating R801 of company speed regulator service manual; 4, the small-bore diesel engine that requires again R.Bosch Gmbh RQV GovernorWorkshop Manual) but in recent years to be used for light-duty vehicle further reduces pollution, reduce discharging, reach No. 2 Abgasgesetzs in Europe or higher requirement, particularly in these diesel engine using high-pressure injection, after small aperture perforated plate type atomizer and the charge inter cooling technology, require the mechanical variable-speed governor of in-line fuel injection pump on the basis of existing R801 speed regulator, further to dwindle boundary dimension, particularly reduce the longitudinal length size; Ability to work when strengthening idling adds the negative correction stroke of big-and-middle low-speed region, further enlarges the adjustment range of speed regulator external characteristics.These new requirements are to comprise that the various mechanical variable-speed governor prior art of R801 is beyond one's reach at present.
Summary of the invention:
The purpose of this utility model provides a kind of improved mechanical variable-speed governor that is used for in-line fuel injection pump.This speed regulator boundary dimension is little, and high working efficiency has stronger ability to work, and the negative correction stroke is bigger, and boost compensator can also be installed, and is applicable to the light-duty vehicle small-bore diesel engine of low emission.
The technological scheme that the utility model adopted is that design is a kind of new, improved mechanical variable-speed governor, it mainly comprises flyball (1), flying hammer bracket (2), governor spring (3), flyball lever (4), driving pin (5), telescopic shaft (6), supporting lever (7), buoyant beam (8), sliding fulcrum (9), throttle control handle (10), pull bar connecting rod (11), control rod link (12), governor housing (13) and negative correction device parts such as (20), its major character is: a. wherein flyball (1) adopts thin walled cylinder shape to thicken the structure of outer rim, the quality of single flyball (1) is less than 260g, and rotary inertia is greater than 1268g.cm
2B. governor spring wherein (3) is directly installed in the inner chamber of flyball (1); C. the central lines of the movement locus of the center of mass of flyball (1) and governor spring (3) wherein.In addition, the negative correction stroke of this speed regulator can reach 2.5 to 3.5mm, and the longitudinal length size L of governor housing (13) is less than 125mm, and boost compensator (30) can be installed.
The utility model is compared the beneficial effect that is had with prior art: dwindled boundary dimension, particularly reduced the longitudinal length size, the ability to work of speed regulator when having strengthened the idling and the slow-speed of revolution simultaneously, strengthen the negative correction stroke in middle and slow speed of revolution zone, further enlarged the adjustment range of speed regulator external characteristics.This speed regulator is fit to the low emission of adapted PM type, reinforced in-line fuel injection pump (referring to Chinese utility model patent 03239591.4) and other small-sized in-line fuel injection pump, can satisfy the requirement that the small-bore diesel engine that is used for light-duty vehicle reduces pollution, reduces discharging and employing high-pressure injection, charge inter cooling technology and improve idle stability and improve acceleration performance.
Description of drawings:
Fig. 1 is the sectional arrangement drawing of a kind of speed regulator of embodiment of the present utility model.
Fig. 2 is the embodiment's of model utility a kind of fuel delivery Principles of Regulation figure of speed regulator.
Fig. 3 is the fuel delivery Principles of Regulation figure of R801 speed regulator in the prior art.
Fig. 4 is the comparison diagram of the flyball structure of the utility model and prior art.
Fig. 5 is the contrast of adopting the R801 speed regulator statistics of embodiment's of the present utility model a kind of speed regulator statistics and prior art.
Fig. 6 is the negative correction device fundamental diagram that adopts a kind of speed regulator of the present utility model.
Fig. 7 is the governor control characteristics figure of a kind of speed regulator of embodiment of the present utility model.
Embodiment:
Below in conjunction with description of drawings embodiment of the present utility model.Shown in Fig. 1 is the longitudinal section of a kind of speed regulator of embodiment of the present utility model.It is a kind of mechanical variable-speed governor, is installed on the end face of in-line fuel injection pump.Speed regulator is driven by fuel injection camshaft (15).In this kind speed regulator fuel delivery Principles of Regulation figure illustrated in figures 1 and 2, flying hammer bracket (2) is fixed on the end of camshaft (15), and 2 flyballs (1) and 6 governor springs (3) are installed on the flying hammer bracket (2), rotate with camshaft (15).2 flyballs (1) overcome governor spring (3) under action of centrifugal force pressure outwards moves along radial direction.The central lines of the movement locus of the center of mass of flyball (1) and governor spring (3).Do axial motion through flyball lever (4) and driving pin (5) drive telescopic shaft (6) during flyball (1) motion.Can make the supporting lever (7) that is installed on the fixed support rotate an angle during telescopic shaft (6) axial motion.Groove on one end of supporting lever (7) and the telescopic shaft (6) flexibly connects, and and the lower fulcrum of buoyant beam (8) hinged.The last fulcrum of buoyant beam (8) is connected with control rod link (12) through pull bar connecting rod (11).Control rod link (12) is the fuel delivery minimizing when moving right, and rotating speed is reduced; Control rod link (12) is the fuel delivery increase when being moved to the left, and rotating speed is raise.In the intermediate portion of buoyant beam (8) chute is arranged, sliding fulcrum (9) is housed in the chute, sliding fulcrum (9) is connected with throttle control handle (10) by rod member.When throttle control handle (10) when clockwise direction rotates, sliding fulcrum (9) moves right, and control rod link (12) is also moved right, working speed reduces; When throttle control handle (10) when counter clockwise direction is rotated, sliding fulcrum (9) is moved to the left, and makes control rod link (12) also left, and working speed is raise.Therefore this variable-speed governor can pass through the working speed of the position change Injection Pump of throttle control handle (10).In addition, make mobile position in the chute of sliding fulcrum (9) on buoyant beam (8) also have the effect that changes governor lever ratio.In buoyant beam (8), last fulcrum is M to the distance of sliding fulcrum (9), and lower fulcrum is N to the distance of sliding fulcrum (9), lever ratio=M: N.Sliding fulcrum during idling (9) moves up, and lever ratio is little; Sliding fulcrum during high speed (9) moves down, and lever ratio is big.Lever ratio when reducing idling helps improving the ability to work of speed regulator, strengthens speed regulator and overcomes various resistances, controls the strength of control rod link (12), thereby improves the idle stability of diesel engine.And the lever ratio when suitably increasing high speed, the speed governing rate in the time of guaranteeing high speed is less.Being 1 when the lever ratio of a kind of speed regulator of the present utility model is idling, is 3.88 during high speed.
A major character of the present utility model is that the physical dimension of flyball (1) has been carried out optimal design.The flyball structure that the utility model adopted and the difference of prior art in Fig. 4, have been shown.Fig. 4 a represents the flyball of this kind speed regulator, and it adopts the structure of thin walled cylinder shape thickening outer rim, makes most of mass distribution on rotating center position far away, and the quality of single flyball is less than 260g, and rotary inertia is bigger, can reach 1268g.cm
2Fig. 4 b represents the flyball of the RQV speed regulator of German Bosch company, and its adopts thick walled cylinder shape structure, and quality is big, and single flyball quality is 535g, and volume is also big.Though this flyball has bigger statistics coefficient, thereby make speed regulator have bigger ability to work, because the speed regulator size is too big, therefore can't supporting application on small-bore diesel engine.Fig. 4 c represents the flyball of the R801 of Japan electric coating company speed regulator.The be diversion during this flyball employing work structure of the fulcrum rotation on the hammer support, single flyball quality is 357g.Though adopt this structure governor spring (3) also can be directly installed in the inner chamber of flyball (1), the movement locus of the center of mass of flyball (1) is a circular arc, can not and the central lines of governor spring (3).According to calculating, the efficient of R801 speed regulator flyball has only 94%, the efficient of a kind of speed regulator of the present utility model and RQV speed regulator flyball can reach more than 98% (referring to [Japanese] Teng swamp English is also, the river closes the 82nd～83 page of quiet man's work " diesel engine fuel jetting " Chinese translation).From the contrast of Fig. 4, can clearly be seen that, the size minimum of this kind speed regulator flyball, and the size of RQV and R801 speed regulator flyball is all bigger.
In this kind speed regulator shown in Figure 5 and R801 speed regulator statistics comparison diagram, y coordinate is the statistics coefficient A (g.cm) that represents governor work capacity, and abscissa is represented the speed regulator rotation speed n.As seen from Figure 5, the statistics coefficient A of this kind speed regulator is bigger than R801 when low speed, helps improving idle stability.And the statistics coefficient A of this kind speed regulator is littler than R801 when high speed, thereby the active force that the speed regulator part is subjected to when having reduced high speed, and the functional reliability that improves speed regulator is had obvious effects.Simultaneously can see that in Fig. 5 the statistics slope of a curve of this kind speed regulator is littler than R801, be a kind of more satisfactory statistics coefficient curve shape, can satisfy the speed regulator performance demands better.
By the contrast to R801 speed regulator fuel delivery Principles of Regulation figure in Fig. 2 and this kind speed regulator shown in Figure 3 and the prior art, flyball (1) drives telescopic shaft (6) by driving pin (5) and driver plate (16) when opening and moves axially in the R801 speed regulator as can be seen.And cancelled driver plate (16), thereby reduced the axial dimension of speed regulator at this kind speed regulator shown in Figure 2.Simultaneously, as previously mentioned,, also be to make the longitudinal length L of governor housing (13) can be less than the major reason of 125mm because the size of this kind speed regulator flyball is less.The longitudinal length of this kind governor housing (13) has reduced 33mm than R801 speed regulator.
The negative correction device of employing a kind of speed regulator of the present utility model shown in Figure 6 is applicable to the characteristic of fuel delivery curve of proofreading and correct diesel engine full throttle low speed segment, can solve the diesel engine low speed segment full load problem of smoldering, can improve diesel engine full throttle low speed segment exhaust smoke, reduce oil consumption.In the prior art, as R801 speed regulator etc. the negative correction device is housed all also, but its negative correction stroke has only 1.5～2mm, when supporting, still can not satisfy the performance requirement of some motor with some diesel engine.Implement a kind of speed regulator of the present utility model and adopt negative correction device (20) shown in Figure 6, it is made up of limiting board (21), the arm (22) that floats, extension spring (23), torque cam mechanism (24), adjustment bolt (25), adjustment bolt parts such as (26); Since in design reasonable distribution the stroke of supporting lever (7), under the prerequisite that guarantees the starting stroke, make the negative correction stroke reach 2.5～3.5mm, can satisfy the supporting requirement of various diesels engine for automobile.
Drawn in Fig. 1 upper right corner and to have implemented the boost compensator (30) installed on a kind of speed regulator of the present utility model, this boost compensator (30) mainly is made up of compensation body (31), compensator protector (32), diaphragm (33), compensator spring (34) and center-pole (35) etc.After supercharging or turbocharged and intercooled diesel engine have adopted the speed regulator and Injection Pump with boost compensator, can suitably regulate fuel delivery under the different rotating speeds according to the variation of boost pressure, to satisfy the requirement of the every performance index of diesel engine.
Fig. 7 is the governor control characteristics figure of a kind of speed regulator of embodiment of the present utility model.Y coordinate Q represents fuel delivery among the figure, unit be per spray for 200 times the fuel oil volume cm of confession
3Abscissa is represented the rotating speed (r/min) of Injection Pump or diesel engine.Characteristic line 1 is the external characteristic curve of throttle control handle (10) when being in the full load position among the figure.Characteristic curve 2 is throttle control handle (10) idling characteristics when being in idle position among the figure.All the other each bar oblique lines are represented the fuel delivery characteristic of this mechanical variable-speed governor when throttle control handle (10) is in each neutral position respectively among the figure.A kind of speed regulator of having implemented embodiment of the present utility model as seen from Figure 7 has good calibration function, idling characteristic and full distance speed regulating characteristic.
Claims (3)
1, a kind of mechanical variable-speed governor, it mainly comprises flyball (1), flying hammer bracket (2), governor spring (3), flyball lever (4), driving pin (5), telescopic shaft (6), supporting lever (7), buoyant beam (8), sliding fulcrum (9), throttle control handle (10), pull bar connecting rod (11), control rod link (12), governor housing (13) and negative correction device parts such as (20), and its major character is:
A. flyball wherein (1) adopts the structure of thin walled cylinder shape thickening outer rim, and the quality of single flyball (1) is less than 260g, and rotary inertia is greater than 1268g.cm
2
B. governor spring wherein (3) is directly installed in the inner chamber of flyball (1);
C. the central lines of the movement locus of the center of mass of flyball (1) and governor spring (3) wherein.
2, mechanical variable-speed governor according to claim 1, it is characterized in that negative correction device (20) wherein, by limiting board (21), arm (22) floats, extension spring (23), torque cam mechanism (24), adjust bolt (25), adjusting bolt parts such as (26) forms, the arm (22) that wherein floats is fixed on the buoyant beam (8) by extension spring (23), link together by pull bar connecting rod (11) and control rod link (12) then, be delivered on the unsteady arm (22) by the centrifugal force of buoyant beam (8) flyball (1), its movement locus is decided by torque cam mechanism (24), thereby realize the negative correction stroke, reach 2.5～3.5mm.
3, mechanical variable-speed governor according to claim 1, the longitudinal length L that it is characterized in that governor housing (13) wherein is less than 125mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03250727 CN2672298Y (en) | 2003-04-23 | 2003-04-23 | Mechanical full distance speed regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03250727 CN2672298Y (en) | 2003-04-23 | 2003-04-23 | Mechanical full distance speed regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672298Y true CN2672298Y (en) | 2005-01-19 |
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ID=34473305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03250727 Expired - Lifetime CN2672298Y (en) | 2003-04-23 | 2003-04-23 | Mechanical full distance speed regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2672298Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293292C (en) * | 2003-04-23 | 2007-01-03 | 无锡油泵油嘴研究所 | Mechanical variable speed governor |
| CN100570134C (en) * | 2007-06-06 | 2009-12-16 | 重庆隆鑫工业（集团）有限公司 | Engine Throttle Control Combination |
-
2003
- 2003-04-23 CN CN 03250727 patent/CN2672298Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293292C (en) * | 2003-04-23 | 2007-01-03 | 无锡油泵油嘴研究所 | Mechanical variable speed governor |
| CN100570134C (en) * | 2007-06-06 | 2009-12-16 | 重庆隆鑫工业（集团）有限公司 | Engine Throttle Control Combination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20030423 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |