CN2536799Y - Fuel injection characteristic tester - Google Patents
Fuel injection characteristic tester Download PDFInfo
- Publication number
- CN2536799Y CN2536799Y CN 01247765 CN01247765U CN2536799Y CN 2536799 Y CN2536799 Y CN 2536799Y CN 01247765 CN01247765 CN 01247765 CN 01247765 U CN01247765 U CN 01247765U CN 2536799 Y CN2536799 Y CN 2536799Y
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- China
- Prior art keywords
- oil
- valve
- chip computer
- outlet valve
- sensor
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an injection characteristics measuring unit for injectors, which comprises a measuring capillary, a high pressure gas source part and an oil way controlled part, which are arranged inside the housing, and a monoboard computer arranged outside the housing. The utility model is characterized in that an oil-in surface sensor and a ground surface sensor arranged on the upper part of the measuring capillary, a standard measuring sensor arranged on the lower part of the measuring capillary, and an oil injection waveform sensor arranged on the oil outlet of the measured electric controlled injector are connected with the monoboard computer through the corresponding amplifiers; an electric pulse plug arranged on the central section of the measured electric controlled injector is connected with the monoboard computer through a driving amplifier; a pressure valve and an exhaust valve of the high pressure gas source part are connected with the monoboard computer; an oil inlet valve and an oil outlet valve of the oil way control part are connected with the monoboard computer. The utility model has the advantages of new-style design, ingenious conception, simple structure, high degree of automation, convenient use, multiparameter and integrated testing ability, high measuring accuracy and credible result.
Description
Technical field
The utility model relates to oil sprayer spray characteristic measuring device.
Technical background
The gasoline engine fuel supply system mainly is the requirement according to Under Different Work Condition of Engine, with required air fuel ratio (air: mixed gas supply cylinder gasoline).Press the difference of supplying method, can be divided into carburetor type and gasoline injection formula.The former is the negative pressure (degree of vacuum) that produces at trunnion when utilizing air flows, and gasoline is inhaled in the gas-entered passageway on closure top; The latter is that oil sprayer receives the unbalanced pulse electrical signal from control gear, accurately sprays an amount of gasoline in gas-entered passageway, thereby obtains the mixed gas of optimal air-fuel ratio.Under the constant situation of inlet and outlet pressure difference, fuel injection quantity is determined by the driving pulse width.This shows that oil sprayer is a very important terminal power unit in electronically controlled fuel injection system.
The spray regime of oil sprayer is the key factor that influences the petrol engine combustion characteristic, be to realize the high pressure fuel injector of petrol engine and accurate control air fuel ratio, and the accurate measurement of oil sprayer spray regime is absolutely necessary.The working state of oil sprayer can be described with following parameter usually:
1, static emitted dose Q: promptly under authorized pressure, when making valve keep maximum travel position, the amount of fuel that time per unit sprayed is used cm usually
3/ min represents.
2, dynamic emitted dose q: promptly a certain current"on"time (driving pulse width) Ti fuel injection quantity (ml).The fuel injection quantity of each Valve travel when generally being 2.5ms with current"on"time represents that its unit is the ml/ stroke.
3, effective discharge time Ti Tu: Ti is current"on"time, and Tu is invalid discharge time, and it has represented oil sprayer linear work interval.4, lowest starting voltage Vmin: promptly in the current"on"time of regulation, the magnitude of voltage when oil sprayer just can oil spout.
At present, except that some can detect oil sprayer whether the device of oil spout, also do not have a kind of can be comprehensively, the device of MEASUREMENT OF STEAM oil turbine electric-controlled fuel injector spray characteristic accurately.
The content of invention
The purpose of this utility model provide a kind of comprehensively, the oil sprayer spray characteristic measuring device of MEASUREMENT OF STEAM oil turbine electronic control injection special parameter accurately.
The purpose of this utility model is achieved through the following technical solutions: oil sprayer spray characteristic measuring device comprises the metering capillary tube that is contained in the casing, connected high-pressure air source part and oil circuit control section, is contained in the outer one-chip computer of casing;
The compressed gas source of high-pressure air source part is connected with an end of one-level gas holder, and one-level oil-water separation filter and boost gauge are installed therebetween; The other end of one-level gas holder is connected with primary pressure regulator, secondary oil-water separation filter, precision pressure regulator, energy storage canister, pressurizing valve successively; Between pressurizing valve and the outlet valve precision pressure gauge is installed, and communicates with metering capillary upper end;
One end of the oil transport pipeline of oil circuit control section inserts fuel reserve tank, the other end is connected with an end of fuel oil filter, the other end of fuel oil filter is connected with an end of oiling valve, an end of the other end of oiling valve, outlet valve with measure lower end capillaceous and be connected with tee pipe fitting;
The filler opening of measured electric-controlled fuel injector is connected with the other end of outlet valve, and the oil outlet of measured electric-controlled fuel injector takes back fuel tank;
The oil-feed surface sensor that it is characterized in that being contained in metering capillary tube top and null plane sensor, the standard metering sensor that is contained in metering capillary tube bottom, the injector waveform sensor that is installed in tested electric-controlled fuel injector oil outlet are connected with one-chip computer through corresponding amplifier respectively; The electrical pulse plug that is installed in tested electric-controlled fuel injector middle part is connected with one-chip computer through overdriven amplifier; The pressurizing valve of high-pressure air source part is connected with one-chip computer through control wiring with outlet valve; The oiling valve of oil circuit control section is connected with one-chip computer through control wiring with outlet valve.
Described oil sprayer spray characteristic measuring device is characterized in that printer, digital display that one-chip computer is equipped with auto-control software and is attached thereto.
The utility model utilization is through the pressurized air of accurate adjustment with pilot pressure, the quantitative gasoline of measuring in the capillary tube is pressed in the electric-controlled fuel injector, again by the effect of the electrical pulse of the accurate control impuls width of one-chip computer ejection and write down injecting times automatically continuously down by one-chip computer, calculate special parameters such as dynamic emitted dose, static emitted dose, effective discharge time and lowest starting voltage, show at last with printing and measure the room result.
The utility model design concept exquisiteness, simple in structure, the automaticity height, easy to use, have the integrate more parameters testing ability, measuring accuracy height, reliable results.
Description of drawings
Fig. 1 is an external form schematic representation of the present utility model.
Fig. 2 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing working procedure of the present utility model is described: be installed in the pressurized air that compressed gas source 14 produces in the casing 30, enter one-level gas holder 11 through one-level oil-water separation filter 13, regulate primary pressure device 10, make boost gauge 12 indication greater than 0.4Mpa, pass through secondary oil-water separation filter 9 again, regulate precision pressure regulator 7, the pressure that makes precision pressure gauge 2 indications is between 0.2-0.4Mpa, and it is standby to enter energy storage canister 6 then.During measurement, send instruction by one-chip computer 25, pressurizing valve 5 and outlet valve 17 are closed, outlet valve 1 and oiling valve 16 are opened, fuel oil in the fuel reserve tank 27 is through fuel oil filter 26, enter by the lower end of oil transport pipeline 28 from metering capillary tube 15, when pasta reaches desired location, oil-feed surface sensor 3 obtains signal, be delivered to one-chip computer 25 through amplifier 21, one-chip computer 25 sends instruction once more, closes outlet valve 1 and oiling valve 16, open pressurizing valve 5 and outlet valve 17 then, this moment, the high pressure air of energy storage canister 6 entered from the upper end of measuring capillary tube 15, and the fuel oil in pipe pressurizes, and is accurately measured by precision pressure gauge 2, because the incompressibility of liquid, the fuel oil pressure inside equates with gas pressure.One-chip computer 25 sends instruction through driving amplifier 22, and control electrical pulse plug 29 sprays electric-controlled fuel injector 18, and the air in the emptying oil sprayer reaches null plane sensor 4 until pasta, and injection stops.The fuel oil of ejection begins when flowing into oil sump tank 19 to measure, when driving electric-controlled fuel injector 18 oil spouts by the driving pulse width of setting in advance, injector waveform sensor 20, standard metering sensor 8 are received signal, note parameters such as injecting times, injector waveform, obtain special parameters such as dynamic emitted dose, static emitted dose, effective discharge time and lowest starting voltage then by computer, print result of calculation by digital display 24 demonstrations and by printer 23.
Claims (2)
1, oil sprayer spray characteristic measuring device comprises the metering capillary tube (15) that is contained in the casing (30), connected high-pressure air source part and oil circuit control section, is contained in the outer one-chip computer (25) of casing (30); The compressed gas source (14) of high-pressure air source part is connected with an end of one-level gas holder (11), and one-level oil-water separation filter (13) and boost gauge (12) are installed therebetween; The other end of one-level gas holder (11) is connected with primary pressure regulator (10), secondary oil-water separation filter (9), precision pressure regulator (7), energy storage canister (6), pressurizing valve (5) successively; Between pressurizing valve (5) and the outlet valve (1) precision pressure gauge (2) is installed, and communicates with metering capillary (15) upper end; One end of the oil transport pipeline of oil circuit control section (28) inserts fuel reserve tank (27), the other end is connected with an end of fuel oil filter (26), the other end of fuel oil filter (26) is connected with an end of oiling valve (16), and an end of the other end of oiling valve (16), outlet valve (17) is connected with tee pipe fitting with the lower end of metering capillary tube (15); The filler opening of measured electric-controlled fuel injector (18) is connected with the other end of outlet valve (17), and the oil outlet of measured electric-controlled fuel injector (18) takes back fuel tank (19); It is characterized in that being contained in metering capillary tube (15) top oil-feed surface sensor (3) and null plane sensor (4), be contained in the standard metering sensor (8) that measures the capillary tube bottom, the injector waveform sensor (20) that is installed in tested electric-controlled fuel injector (18) oil outlet passes through corresponding amplifier (21) respectively and is connected with one-chip computer (25); The electrical pulse plug (29) that is installed in tested electric-controlled fuel injector (18) middle part is connected with one-chip computer (25) through overdriven amplifier (22); The pressurizing valve (5) of high-pressure air source part is connected with one-chip computer (25) through control wiring with outlet valve (1); The oiling valve of oil circuit control section (16) is connected with one-chip computer (25) through control wiring with outlet valve (17).
2, oil sprayer spray characteristic measuring device according to claim 1 is characterized in that printer (23), digital display (24) that one-chip computer (25) is equipped with auto-control software and is attached thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247765 CN2536799Y (en) | 2001-09-27 | 2001-09-27 | Fuel injection characteristic tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247765 CN2536799Y (en) | 2001-09-27 | 2001-09-27 | Fuel injection characteristic tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2536799Y true CN2536799Y (en) | 2003-02-19 |
Family
ID=33658550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01247765 Expired - Fee Related CN2536799Y (en) | 2001-09-27 | 2001-09-27 | Fuel injection characteristic tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2536799Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881246A (en) * | 2010-06-02 | 2010-11-10 | 天津大学 | Measuring device and method of response time of fuel injector |
| CN103498745A (en) * | 2013-10-10 | 2014-01-08 | 中国人民解放军***72465部队 | Automatic pressure testing instrument of oil atomizer |
| CN111828221A (en) * | 2020-07-16 | 2020-10-27 | 南通职业大学 | Reliability testing device and measuring method for oil inlet metering valve of common rail pump |
-
2001
- 2001-09-27 CN CN 01247765 patent/CN2536799Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881246A (en) * | 2010-06-02 | 2010-11-10 | 天津大学 | Measuring device and method of response time of fuel injector |
| CN101881246B (en) * | 2010-06-02 | 2012-05-30 | 天津大学 | Measuring device and method of response time of fuel injector |
| CN103498745A (en) * | 2013-10-10 | 2014-01-08 | 中国人民解放军***72465部队 | Automatic pressure testing instrument of oil atomizer |
| CN111828221A (en) * | 2020-07-16 | 2020-10-27 | 南通职业大学 | Reliability testing device and measuring method for oil inlet metering valve of common rail pump |
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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: 20030219 Termination date: 20100927 |