CN202370722U - Device for measuring oil injection angle of diesel engine - Google Patents
Device for measuring oil injection angle of diesel engine Download PDFInfo
- Publication number
- CN202370722U CN202370722U CN2011205661515U CN201120566151U CN202370722U CN 202370722 U CN202370722 U CN 202370722U CN 2011205661515 U CN2011205661515 U CN 2011205661515U CN 201120566151 U CN201120566151 U CN 201120566151U CN 202370722 U CN202370722 U CN 202370722U
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- injection pump
- cam
- angle
- diesel engine
- dial
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Abstract
The utility model relates to a device for measuring the oil injection angle of a diesel engine. The device is non-electronic, is used for measuring the oil injection angle according to traces left by spraying oil onto a metal mesh, can be used for measuring advance angle or lag angle relative to a top dead center, and is free from electric fault errors of electronic instruments, reliable in data, simple in structure and easy to manufacture.
Description
Technical field
The present invention relates to the diesel technology field of measurement, relate in particular to a kind of diesel engine fuel injecting angle measurement unit.
Background technique
After on the diesel engine oil supply angle automatic advancing device being installed, must measure the oil spout angle under various rotating speeds, promptly must do dynamic measurement.The measuring device that is the electronic sensor formula that adopts at present, like " the GTY-II fuel supply advance angle testing instrument " that Wuxi Oil Pump Nozzle Inst produces, the advantage of this quasi-instrument is that measuring accuracy is high; Error is 0.1 °; But the changing value that can only take measurement of an angle, the angle value during the relative diesel engine top dead center of energy measurement oil spout angle not, can not measure changing value is just to change; Still negative the variation; This is for detecting newly-designed oil supply angle automatic advancing device, and it is not comprehensive to detect performance, has satisfied not usage requirement.
Summary of the invention
The present invention mainly solves a kind of measuring device that can measure the oil spout angle with respect to the changing value of diesel engine top dead center is installed on test stand, and belongs to the measuring device of non-electronic type.
Technological scheme of the present invention is: cam of injection pump axle (cam is housed on it) is housed, Injection Pump, oil sprayer on a casing; The tooth bar pull bar, the tooth bar pull bar is connected with the tooth bar of Injection Pump through draw-in groove, on camshaft, is fixed with dial; On the radius of the nozzle opening of corresponding oil sprayer on the dial, be processed with arc-shaped window, and along the circumferential direction be carved with angle, the centre is 0 °; About each some degree (15 °～25 °), when the position that the cam on the cam of injection pump axle forwards Injection Pump to is equivalent to the diesel engine top dead center, on dial 0 °; Fix oil sprayer, and the nozzle opening that makes oil sprayer is over against 0 ° of groove.Stick wire netting (more than 100 orders) at the window place, connect oil feed line and high-pressure oil pipe, the cam of injection pump axle is connected with advancing device drive plate (driving disc), and cam is connected with the advancing device driven disc.After the cam of injection pump axle rotates, the tooth bar pull bar of controlling oil mass is placed the fuel feeding position, the oil sprayer commencement of fuel injection.Shut down, on wire netting, be coated with last layer butter oil film, the tooth bar pull bar is placed the cut-out position place; The starting test platform, make cam of injection pump axle rotating speed reach required value after, the tooth bar pull bar is put to the fuel feeding position; After the oil sprayer oil spout; Return the tooth bar pull bar to the fuel cut-off place, the vestige that shutdown observation oil bundle stays on wire netting is bright vestige, is easy to observe the angle on the corresponding scale.As being that the vestige right-hand member is the beginning angle of oil spout when clockwise rotating in the face of dial, i.e. fuel supply advance angle (or retardation angle), left end is for stopping oily angle, and the shared angle of vestige is the fuel feeding delivery angle.0 ° of line the right is a fuel supply advance angle, and 0 ° of line left side is a fuel feeding hysteresis angle.
The invention has the advantages that making simple in structure is easy, can directly measure the fuel supply advance angle under each rotating speed, and can measure rotation speed change the time, the positive negative value that advance angle changes.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the A-A sectional view of Fig. 1
Fig. 3 is that the B of Fig. 1 is to partial view
Fig. 4 is the oily stria mark figure after Fig. 3 oil spout
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described further.
Shown in Figure 2 like Fig. 1, cam of injection pump axle (2) is installed for movingly on the casing (1), cam (3) is installed also for movingly on the cam of injection pump axle (2); In cam (3) position Injection Pump (5) is installed, tooth bar pull bar (4) also is housed on casing (1), be fixed with draw-in groove (12) on the tooth bar pull bar (4) for movingly; Draw-in groove (12) connects the fuel-flow control tooth bar (6) on the Injection Pump (5); End at cam of injection pump axle (2) is fixed with dial (11), on dial (11), is processed with arc-shaped window (10), and arc-shaped window (10) position faces casing (1) and goes up the nozzle opening on the oil sprayer of installing (8); On arc-shaped window (10), along the circumferential direction being carved with angle (as shown in Figure 3) middle is 0 °; About each some degree (15 °～25 °), when the position that the cam on the cam of injection pump axle (3) forwards Injection Pump (5) to is equivalent to the diesel engine top dead center, locate 0 ° of dial (11); On casing (1), fix oil sprayer (8), and the nozzle opening that makes oil sprayer (8) is over against 0 ° of groove.Go up metal clad net (9) (more than 100 orders) at window (10), with high-pressure oil pipe (7) just oil sprayer (8) link to each other with Injection Pump (5), connect oil feed line.The drive plate of advancing device is connected with cam of injection pump axle (2), and the driven disc of advancing device is connected with cam (3).
Working principle is explained as follows:
After cam of injection pump axle (2) rotated, cam (3) acts on Injection Pump (5) made it carry out the work of pump oil, when tooth bar pull bar (4) is placed the fuel feeding position; Injection Pump (5) just can pump oil; High pressure oil sprays from the nozzle opening of oil sprayer (8) through high-pressure oil pipe (7), and is sprayed onto on the wire netting (9), after Injection Pump (5) oil spout; Shut down, on wire netting (9), be coated with last layer butter (lubricating grease) film.The tooth bar pull bar is placed cut-out position, and the starting test platform is transferred to cam of injection pump axle (2) rotating speed when reaching the requirement rotating speed; Tooth bar pull bar (4) is placed the fuel feeding position, make oil sprayer (8) oil spout after, again tooth bar pull bar (4) is return cut-out position; Shut down then; Observe dial (11) and go up the oil spout vestige (13) (as shown in Figure 4) on the wire netting (9), oil spout vestige (13) is a transparent camber line, is easy to observation; If dial (11) is gone up sense of rotation as shown in Figure 4 (clockwise); Angle on the corresponding dial of oil spout vestige (13) right-hand member P (11) is exactly the fuel injection beginning angle, and the angle that left end Q is corresponding is the end of injection angle, and the pairing angular range of oil spout vestige (13) is exactly the oil spout delivery angle.If oil spout angle at this moment was a fuel supply advance angle on 0 ° of line the right in P o'clock, if P o'clock on 0 ° of line left side, oil spout angle at this moment is a fuel feeding hysteresis angle.Under various rotating speeds, record the oil spout angle, when increasing with the increase of rotating speed like fuel supply advance angle for just changing, otherwise change for negative.
Claims (2)
1. a diesel engine fuel injecting angle measurement unit is characterized in that cam of injection pump axle (2) is installed on casing (1), and cam (3) is installed on the cam of injection pump axle (2); In cam (3) position Injection Pump (5) is installed; Tooth bar pull bar (4) also is housed on the casing (1), is fixed with draw-in groove (12) on the tooth bar pull bar (4), draw-in groove (12) connects the fuel-flow control tooth bar (6) on the Injection Pump (5); End at cam of injection pump axle (2) is fixed with dial (11); Be processed with arc-shaped window (10) on the dial (11), arc-shaped window (10) position faces the nozzle opening of oil sprayer (8), and arc-shaped window (10) is gone up metal clad net (9); And along the circumferential direction be carved with angle, oil sprayer (8) links to each other with Injection Pump (5) with high-pressure oil pipe (7).
2. diesel engine fuel injecting angle measurement unit according to claim 1; It is characterized in that the scale centre on the dial (11) is 0 °; About each minute some degree; When the position that cam (3) forwards Injection Pump (5) to is equivalent to the position of diesel engine top dead center, 0 ° of nozzle opening of just in time aiming on the oil sprayer (8) on the dial (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205661515U CN202370722U (en) | 2011-12-30 | 2011-12-30 | Device for measuring oil injection angle of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205661515U CN202370722U (en) | 2011-12-30 | 2011-12-30 | Device for measuring oil injection angle of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370722U true CN202370722U (en) | 2012-08-08 |
Family
ID=46594428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205661515U Expired - Fee Related CN202370722U (en) | 2011-12-30 | 2011-12-30 | Device for measuring oil injection angle of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418638A (en) * | 2011-12-30 | 2012-04-18 | 运城学院 | Device for measuring fuel injection angle of diesel engine |
| CN103994005A (en) * | 2014-04-13 | 2014-08-20 | 北京理工大学 | Fuel economy calibrating method of electronic control monoblock pump diesel engine model |
-
2011
- 2011-12-30 CN CN2011205661515U patent/CN202370722U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418638A (en) * | 2011-12-30 | 2012-04-18 | 运城学院 | Device for measuring fuel injection angle of diesel engine |
| CN103994005A (en) * | 2014-04-13 | 2014-08-20 | 北京理工大学 | Fuel economy calibrating method of electronic control monoblock pump diesel engine model |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20161230 |