CN2094740U - 495a diesel engine test instrument - Google Patents
495a diesel engine test instrument Download PDFInfo
- Publication number
- CN2094740U CN2094740U CN 90223148 CN90223148U CN2094740U CN 2094740 U CN2094740 U CN 2094740U CN 90223148 CN90223148 CN 90223148 CN 90223148 U CN90223148 U CN 90223148U CN 2094740 U CN2094740 U CN 2094740U
- Authority
- CN
- China
- Prior art keywords
- bent axle
- index plate
- injection pressure
- cylinder
- bottle opener
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Abstract
The utility model belongs to a test instrument to detect the technique condition of the 495A diesel engine. The utility model comprises a crankshaft graduated disk, a reading pointer, a shaking device and an auxiliary tool. The utility model can carry out detection and adjustment for the technical condition parameters of gas distribution phase, oil supply advance angle, fuel injection pressure, sealing performance of a plunger piston pair, etc. The utility model has the advantages of high speed, low cost, good effect, simplicity, and practicality.
Description
The utility model belongs to diagnosis 495A diesel technology status detection instrument.Can be used for state of the art parameters such as 495A fuel injection advanced angle, port timing, injection pressure are detected and adjust.
Existing 495A diesel technology state detector has clearance gauge, bottle opener, tensimeter, index plate, clock gauge, magnet base etc.To the detection adjustment of fuel supply advance angle,, generally, it is adjusted to certain scope according to adjustment person's operating experience and technology because of there not being special dividing apparatus.Use loom generally not carry out the detection adjustment of port timing to reality, only adjustment is detected in the valve clearance.But because the wearing and tearing of each the valve actuating mechanism member of diesel engine in actual the use only are transferred to the valve clearance instructions setting and can not be satisfied the port timing requirement, the power of diesel engine, oil consumption rate can not get improving well.Experimental study shows, uses loom to be adjusted into benchmark with port timing to reality, suitably takes into account the method for adjustment of valve clearance, can recover the dynamic property economy of diesel engine preferably.The detection adjustment of injection pressure generally is that fuel injector is pulled down from diesel engine, carries out on fuel injector pressure test bench or tensimeter.And most users do not have pressure test bench or tensimeter, then adopt listening and see fogging degree adjustment easily to cause serious deviation.Therefore, there is following problem in existing 495A diesel engine detector:
(1) instrument is many, price is high, it is universal to be difficult for; (2) detection adjustment project is incomplete, is difficult to recover preferably the diesel technology state; (3) detection is adjusted time-consuming; (4) some test item adopts empirical method, and error is bigger.
The purpose of this utility model be for provide a kind of detection adjust effective, price is low, simple and practical, easy to use diesel technology state detector.
The utility model is finished 495A diesel technology state-detection and adjustment by bent axle index plate, reading pointer, bent axle agitating device and aid.
Bent axle index plate axial surface is carved with angle (every five equilibrium 360/N degree) and each cylinder inlet and outlet door open and close sign of N five equilibrium.The bent axle index plate is put into from water tank and the crankshaft front end belt pulley space that is separated by, and is installed on the belt pulley, and rotates synchronously with bent axle.Each cylinder inlet and outlet door open and close sign is to determine according to the work done order and the valve switching rule of multicylinder engine on the bent axle index plate, can detect and adjust 16 inlet and outlet door open and close angles of all eight valves in bent axle takes two turns.The outer round surface that three clamping and positioning screws are housed on the bent axle index plate small end matches with the internal circular surfaces of crankshaft front end belt pulley, and three clamping and positioning screws guarantee that index plate and bent axle rotate synchronously.The reading pointer that has magnet is adsorbed on the water tank base plane, does not rotate with bent axle.The placement of reading pointer should be convenient to reading, can not collide with index plate again.In order to make the bent axle can two-way neatly rotation, realize by the bent axle agitating device.Agitating device is made up of crank handle support and crank handle.The crank handle head be square with 36 millimeters of φ in the square opening of Hexagonal jacket match, can make the two-way rotation of bent axle like this.The fulcrum of the former crank handle of tractor is arranged on the engine case, and diesel engine is when detecting, and case will be removed.Therefore, need a crank handle support, and it is installed in two mounting holes of former case on the water tank frame.During detection, pry open belt pulley front end starting dog, on starting dog, put Hexagonal jacket in 36 millimeters of the φ with Hammer head and screwdriver.The datum line (index plate zero line) of bent axle index plate in the time of need finding piston to be in top dead centre during detection.Can be by determining that the first cylinder compression top center position obtains the index plate datum line.Concrete steps are: the engine decompression handle is pulled decompression position, tear one first cylinder high-pressure oil pipe open, it is fuel-displaced to shake bent axle to the first cylinder, is in the elbow latch insertion oil sump fuel supply advance angle inspection hole of 6 millimeters of φ with one of aid head, makes elbow latch one end run into the flywheel end face.Near rotating dynamic crankshaft this, when the elbow latch inserts on the flywheel respective aperture, show that first cylinder is in preceding 25 °～27 ° positions of compression top center, bent axle stops operating, bent axle index plate reading pointer is aligned 26 ° of scale mark places on the reading dial, and then just represent the engine first cylinder compression top center position zero point (being reference point) on the index plate.
The equipment such as clock gauge of index plate and belt supporting frame are adopted in the inspection of tradition port timing, detect complexity, should not promote in the rural area.We adopt simple testing method, and its principle is: utilize finger constantly to rotate valve actuating push rod, determine valve opening, close moment with sensation.When valve was in closed condition, cam is the top tappet not, and the push rod end is gapped.Rotation feels relief flexibly; When valve is opened, cam top tappet, tappet is pressed push rod, and the push rod pressurized rotates and feels difficulty; When valve is just opened or just closed moment, eliminate the valve clearance, and the push rod two ends are pressurized just, and rotating push-rod feels to have a viscous.The corresponding corner of bent axle can be read on the bent axle index plate when valve had just been opened or just closed.But four cylinder engine has eight valves, 16 angles.May not duplicate or miss detection adjustment if do not detect adjustment in certain sequence.The bent axle index plate of this patent design can detect, adjust all angles easily in bent axle takes two turns.Concrete steps are as follows: after finding the bent axle index plate first cylinder compression top center datum line, clockwise rotate bent axle (when bent axle changes first lap, detect to adjust and see B lattice content among Fig. 2, during second circle, see C lattice content) successively.When forwarding 8 ° of left and right sides of the 4th cylinder exhaust valve closing angle gauge definite value to when bent axle, can detect this angle, find the firm close moment of exhaust valve, corresponding index plate pointer indication index plate numerical value is four cylinder exhaust valves and closes the angle late.Inspection finishes, and when bent axle continues to forward 48 ° of left and right sides clockwise to, checks that the angle is closed in the air inlet of the 3rd cylinder late.Bent axle is rotated further, and checks that successively the angle is closed in the first cylinder exhaust advance angle, two cylinder intake advance angle, two cylinder exhaust late, angle, two cylinder exhaust advance angle and a cylinder intake advance angle are closed in four cylinder air inlets late.Equally, when bent axle changes second circle, can check other eight angles successively.The port timing adjustment can be carried out after inspection.According to test and analysis, in four angles of port timing, close angle, exhaust advance angle late to engine power performance economic influence maximum, therefore, during adjustment, should be benchmark with these two angles, and suitably take into account the inlet valve angle of advance and exhaust valve closes the angle late, and require to adjust the back and guarantee that the valve clearance of each cylinder is greater than 0.15 millimeter.
Aid is the elbow latch of 6 millimeters of φ by head and detects bottle opener and form.Detecting bottle opener is made up of common bottle opener and reference graduation dish.The injection pressure that is divided into N five equilibrium (whenever being divided into the 360/N degree) and corresponding scale on the axial cylinder of index dial detects adjusts numerical value.Its scale is with the corner and the injection pressure (kilograms per centimeter of fuel injector spring adjusting screw
2) corresponding relation is as follows: P=0269Q-0175; (in the formula: P is an injection pressure, and Q is that injection pressure is adjusted the screw corner).
Adopt detector of the present utility model to compare with existing detector, have following advantage: (1) is easy to use, detects accurately, and is effective.(2) price is low.(3) instrument is few, and is simple and practical, easy to carry.
Concrete structure of the present utility model is as shown in the figure:
Description of drawings:
Fig. 1: bent axle index plate
Fig. 2: the axial cylinder stretch-out view of bent axle index plate
(1) " 0 " is 1,4 cylinder top dead centres among the figure, 2,3 cylinder lower dead center; " 0 ' " is 1,4 cylinder lower dead center, 2,3 cylinder top dead centres.
(2) if the detected value of certain valve timing diagram fall into 0 or 0 ' with a side of this angle shop instructions setting groove, then be on the occasion of, otherwise be negative value.
Fig. 3: reading pointer D: be magnet
Fig. 4: agitating device
Fig. 5: elbow latch
Fig. 6: detect bottle opener
Fig. 7: detect the axial cylinder stretch-out view of bottle opener
(1) angle value (unit: degree) that the first line number value is rotated for detecting bottle opener among the figure.
(2) among the figure second and third, four, five-element's numerical value is respectively and detects the injection pressure value (unit: kilograms per centimeter that bottle opener forwards first, second, third and fourth circle corresponding angle to
2).For example, when detecting bottle opener and forwarding 150 of the 3rd circle to and spend, then the injection pressure value is 234 kilograms per centimeter
2
Most preferred embodiment of the present utility model as shown in drawings, the bent axle index plate adopts metal such as alloy steel, steel, nonmetallic materials such as plastics and compound substance to form.The bent axle index plate cooperates with belt pulley to adopt locatees the clamping screw location, and reading pointer bottom has magnetic, detects bottle opener and elbow latch head and adopts metal material.Agitating device is made by metal material.
Claims (5)
1, a kind of detector that is used to diagnose the multi-cylinder diesel engine state of the art, it is characterized in that detector is made up of bent axle index plate and reading pointer, bent axle agitating device and aid, be carved with angle (every five equilibrium 360/N) and each cylinder inlet and outlet door open and close sign of N five equilibrium on the axial cylinder of bent axle index plate.Reading pointer base has magnetic and can be adsorbed on the body.
2, bent axle index plate according to claim 1 is characterized in that being equipped with on this dish small end three clamping and positioning screws, and the outside surface of bent axle index plate small end matches with the internal circular surfaces of crankshaft front end belt pulley.
3, bent axle agitating device according to claim 1 is characterized in that being made up of crank handle support and crank handle, and the crank handle head is square, and matches with the square opening of corner sleeve in 36 millimeters of the φ.
4, aid according to claim 1 is characterized in that being the elbow latch of 6 millimeters of φ and being detected bottle opener and form by head.Detecting bottle opener is made up of common bottle opener and reference graduation dish.Be divided into N five equilibrium (whenever being divided into the 360/N degree) on the axial cylinder of index dial and be carved with injection pressure and detect adjustment numerical value.Its scale is with the corner and the injection pressure (kilograms per centimeter of fuel injector spring adjusting screw
2) corresponding relation is as follows: P=0269Q-0175; (in the formula: P is an injection pressure, and Q is that injection pressure is adjusted the screw corner).
5, detector according to claim 1, it is characterized in that the bent axle index plate can adopt metal material, nonmetallic materials such as plastics, bakelite and compound substance are made, and the reading pointer can adopt magnetic material, detect bottle opener, elbow latch and agitating device and can adopt metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90223148 CN2094740U (en) | 1990-11-02 | 1990-11-02 | 495a diesel engine test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90223148 CN2094740U (en) | 1990-11-02 | 1990-11-02 | 495a diesel engine test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2094740U true CN2094740U (en) | 1992-01-29 |
Family
ID=4900965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90223148 Withdrawn CN2094740U (en) | 1990-11-02 | 1990-11-02 | 495a diesel engine test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2094740U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980498A (en) * | 2012-11-27 | 2013-03-20 | 天津雷沃动力有限公司 | Engine angular advance measuring tool |
| CN104458246A (en) * | 2014-11-06 | 2015-03-25 | 江苏大学 | Liquid magnetism coherence and power transmission characteristic study testing device of magnetic drive pump |
| CN104501694A (en) * | 2014-12-18 | 2015-04-08 | 山西风雷钻具有限公司 | Square sleeve gauge for drilling tool |
| CN105545480A (en) * | 2016-01-06 | 2016-05-04 | 中国重汽集团济南动力有限公司 | Fuel supply advance angle indicating device used for diesel engine |
-
1990
- 1990-11-02 CN CN 90223148 patent/CN2094740U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980498A (en) * | 2012-11-27 | 2013-03-20 | 天津雷沃动力有限公司 | Engine angular advance measuring tool |
| CN104458246A (en) * | 2014-11-06 | 2015-03-25 | 江苏大学 | Liquid magnetism coherence and power transmission characteristic study testing device of magnetic drive pump |
| CN104458246B (en) * | 2014-11-06 | 2017-04-05 | 江苏大学 | Magnetic force pump liquid magnetic is concerned with and power transmission characteristic research assay device |
| CN104501694A (en) * | 2014-12-18 | 2015-04-08 | 山西风雷钻具有限公司 | Square sleeve gauge for drilling tool |
| CN104501694B (en) * | 2014-12-18 | 2017-08-08 | 山西风雷钻具有限公司 | Drilling tool master bushing measuring instrument |
| CN105545480A (en) * | 2016-01-06 | 2016-05-04 | 中国重汽集团济南动力有限公司 | Fuel supply advance angle indicating device used for diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5459940A (en) | Apparatus and process for determining top dead center of a piston and crank shaft in an internal combustion engine | |
| CN105953692A (en) | Valve lift measuring device and method | |
| CN102564769B (en) | Method for measuring gas distribution phase of engine | |
| CN2094740U (en) | 495a diesel engine test instrument | |
| Swain et al. | Design and testing of a dedicated hydrogen-fueled engine | |
| CN201355306Y (en) | Inlet tumble measuring converter for engine air-flue test bed | |
| CN2141561Y (en) | Multi-function ingine tester | |
| Benson | Experiments on two-stroke engine exhaust ports under steady and unsteady flow conditions | |
| Blair et al. | Maps of discharge coefficients for valves, ports and throttles | |
| Tsuchiya et al. | Emission control of two-stroke motorcycle engines by the butterfly exhaust valve | |
| CN109781415A (en) | A kind of calculating of air input of engine by air and Bench calibration method | |
| Reddy et al. | Evaluation of combustion parameters in direct injection diesel engines-an easy and reliable method | |
| Kamo et al. | Emissions comparisons of an insulated turbocharged multi-cylinder miller cycle diesel engine | |
| Henein et al. | Dynamic parameters for engine diagnostics: Effect of sampling | |
| CN208860603U (en) | A kind of device measuring put-put port timing | |
| CN201397234Y (en) | Phase measuring tool | |
| Lim et al. | Estimation of the cylinder pressure in a SI engine using the variation of crankshaft speed | |
| CN87213533U (en) | Detecting scale for operating condition of disk internal combustion engine | |
| Leonard et al. | Parametric investigation of variable valve timing applied to a turbocharged diesel engine | |
| CN2262605Y (en) | Distribution regulating indicator for IC engine | |
| US20210231049A1 (en) | Top Dead Center Gauge Set | |
| CN116067660A (en) | Variable valve lift measuring device of engine | |
| CN2733306Y (en) | Engine case hole center distance checking apparatus | |
| CN210091455U (en) | Multifunctional engine teaching instrument | |
| CN88204073U (en) | Tester for checking gas distribution phase of internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |