CN203717208U - Injection rail performance testing device of compressed natural gas vehicle - Google Patents
Injection rail performance testing device of compressed natural gas vehicle Download PDFInfo
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- CN203717208U CN203717208U CN201320830487.7U CN201320830487U CN203717208U CN 203717208 U CN203717208 U CN 203717208U CN 201320830487 U CN201320830487 U CN 201320830487U CN 203717208 U CN203717208 U CN 203717208U
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Abstract
The utility model relates to an injection rail performance testing device of a compressed natural gas vehicle. The testing device comprises a high speed data measure and control device, an injection rail driver and an injection rail testing unit, wherein the high speed data measure and control device comprises a communication interface, a direct current voltage adjuster, a signal processing unit, a digital output unit, a digital input unit, an analog output unit and an analog input unit; the injection rail driver comprises an injection rail drive unit, a coil resistance measure unit and a coil voltage/current testing unit; the injection rail testing unit comprises an injection rail, four pressure transmitters, four temperature transmitters and four flowmeters. The injection rail performance testing device can be used for accurately measuring pressure, temperature and flow at each port of the injection rail and realize real-time display of a computer.
Description
Technical field
The utility model belongs to detection technique field, is specifically related to a kind of automobile with compressed natural gas spray rail performance testing device.
Background technique
The urban atmospheric pollution problem that vehicle exhaust causes is on the rise.Ten the most serious metropolitan primary pollution sources of global pollution are all vehicle exhausts at present.In China, urban air pollution is very serious, and regular gasoline, exhaust gas from diesel vehicle exhaust emission account for the more than 70% of urban atmospheric pollution, are one of main atmospheric pollution sources.Therefore, advocating and carry out eco-friendly car that protection of the environment is significant, is also the Important Action of response country " energy-saving and emission-reduction " policy.In recent years, compressed natural gas (CNG) automobile is very fast in global evolution, apply and demonstration operation aspect all obtain significant progress.Because rock gas is clean energy resource, compared with gasoline, the exhaust emissions of CNG automobile is not leaded, sulfur-bearing not substantially, and carbon monoxide reduces 97%, and hydrocarbon reduces 72%, and oxynitrides reduces 39%; Low 50% left and right of its cost ratio gasoline, economic benefit and social benefit are huge.At present, there is more than 160 ten thousand, CNG automobile in the whole world, and China recent years is also being widelyd popularize, and the provinces and cities such as Sichuan, Xinjiang, Chongqing, Harbin, Shenzhen, Shanghai, Jilin, Xi'an, Haikou all actively lay down preferential policies and support the development of gas-fueled vehicles.
Corresponding therewith, increasing gradually as the market demand of the spray rail of CNG automobile specified parts, yielding capacity and sales volume are with the speed increment of annual 4-5 times, the needs of the domestic environmental protection of this positive adaptation.Estimate the year two thousand twenty, domestic gas-fueled vehicles will reach 1,000,000, and market can be larger to the demand of spray rail when the time comes.But, in the face of large market like this, the performance test apparatus of compressed natural gas spray rail and quality assurance system but lack extremely, test method shortage standard, science and the special devices such as the test to spray rail spout Flow Output Property, cause the dispatching from the factory power performance of product and the conformity of individual products cannot ensure.
Spray rail is the important component part of CNG automobile fuel gas control system, and the quality of its performance is related to the power performance of vehicle.Gas control system utilizes gas spraying rail to realize control.The spray rail that high-speed electromagnetic valve is housed adopts pulse width modulation controlled mode, the intake manifold injection rock gas according to the instruction timing of ECU (Electrical Control Unit) to respective cylinder.The rock gas of ejection is mixed into cylinder combustion with the fresh air that enters motor.The accurate measurement of gas spraying amount of jet under various operating modes is the precondition that control engine rotating speed keeps highi degree of accuracy and high stability within the whole spreadable life.Because spray rail spout is in machining process, there is certain otherness, cause the different spouts of same spray rail, or Flow characteristics between the spout of different spray rails is different, needs to carry out certain adjustment before dispatching from the factory.But according to current relevant report, still rare for the device of spray rail testing property, cause that engine operation is unstable even cannot normally work.The utility model designs in order to make up the vacancy of CNG automobile spray rail performance testing device.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of automobile with compressed natural gas spray rail performance testing device.
For overcoming the above problems, the utility model has adopted following technological means:
The utility model comprises high-speed data controller, spray rail driver and spray rail test cell, and high-speed data controller comprises communication interface, direct current voltage regulator, signal processing unit, digital output unit, digital input unit, simulation output unit, analog input unit; Spray rail driver comprises spray rail driver element, coil resistance measuring unit and coil voltage/testing current unit; Spray rail test cell comprises spray rail, four pressure transmitters, four temperature transmitters and four flowmeters.
The output terminal of described high-speed data controller communication interface is connected with signal processing unit input end signal, the digital output end of signal processing unit is connected with digital output unit input end signal, the digital input end of signal processing unit is connected with digital input unit signal, the analog output of signal processing unit is connected with simulation output unit signal, the analog input end of signal processing unit is connected with analog input cell signal, direct current voltage regulator is signal processing unit, numeral output unit, numeral input unit, simulation output unit and analog input unit provide power supply.
The output terminal of the digital output unit in described high-speed data controller is connected with the input end signal of spray rail driver element, the output terminal of numeral output unit is connected with the input end signal of coil resistance measuring unit, the output terminal of coil resistance measuring unit is connected with the input end signal of analog input unit, and the output terminal of coil voltage/current measuring unit is connected with the input end signal of analog input unit.
The signal input part of described spray rail is connected with spray rail driver element output end signal, the signal output part of spray rail is connected with the input end signal of four pressure transmitters, four temperature transmitters and four flowmeters, and four pressure transmitters, four temperature transmitters are connected with analog input unit input end signal with four flowmeter output terminals.
The beneficial effects of the utility model are:
1. control solenoid valve and then control closing or opening of the spray each spout of rail;
2. pair electromagnetic valve coil resistance and voltage/current performance are accurately tested;
3. by the on off state of spout of controlling, realize a port opening, flux test when its excess-three port closing, accurately measures the output performance of spout; When realizing four outlets and opening simultaneously, each rate of discharge is accurately tested, for regulating the conformity of four spout flows;
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the utility model comprises three parts: high-speed data controller 1, spray rail driver 2, spray rail test cell 3.
High-speed data controller comprises communication interface 1-1, direct current voltage regulator (DC/DC) 1-2, signal processing unit 1-3, digital output unit 1-4, digital input unit 1-5, simulation output unit 1-6, analog input unit 1-7.The output terminal of communication interface is connected with signal processing unit input end signal, the digital output end of signal processing unit is connected with digital output unit input end signal, the digital input end of signal processing unit is connected with digital input unit signal, the analog output of signal processing unit is connected with simulation output unit signal, and the analog input end of signal processing unit is connected with analog input cell signal.Direct current voltage regulator (DC/DC) provides power supply for signal processing unit, digital output unit, digital input unit, simulation output unit and analog input unit.
Spray rail driver comprises spray rail driver element 2-1, coil resistance measuring unit 2-2 and coil voltage/testing current unit 2-3.The output terminal of numeral output unit is connected with the input end signal of spray rail driver element, the output terminal of numeral output unit is connected with the input end signal of coil resistance measuring unit, coil resistance measuring unit is connected with the input end signal of analog input unit, and the output terminal of coil voltage/current measuring unit is connected with the input end signal of analog input unit.
Spray rail test cell comprises spray rail 3-1,4 pressure transmitter 3-2,4 temperature transmitter 3-3 and 4 flowmeter 3-4.The signal input part of spray rail is connected with spray rail driver element output end signal, the signal output part of spray rail is connected with the input end signal of 4 pressure transmitters, 4 temperature transmitters and 4 flowmeters, and 4 pressure transmitters, 4 temperature transmitters are connected with analog input unit input end signal with 4 flowmeter output terminals.
The test method of device is as follows:
When computer after the controlled order of computer by himself with USB interface and the communication interface 1-1 of high-speed data controller 1 control signal is sent to the signal processing unit 1-2 of high-speed data controller; Signal processing unit converts signal the digital signal that spray rail driver 2 can identify to and by digital output unit 1-4, control signal is sent to spray rail driver 2; After the control signal that the coil resistance measuring unit 2-2 of spray rail driver 2 and coil voltage/testing current unit 2-3 obtain being sent by digital output unit 1-4, the resistance that excites it to high-speed electromagnetic valve and voltage/current are carried out to real-time testing; After the control signal that spray rail driver element 2-1 obtains being sent by digital output unit 1-4, the working state (opening or closing) of the each spout of rail 3-1 will be sprayed by high-speed electromagnetic valve control; The signal that pressure transmitter, temperature transmitter and the flowmeter of coil resistance measuring unit 2-2, coil voltage/current measuring unit 2-3 and spray rail 3-1 and pressure reducing regulator measured them respectively sends to the analog current signal of 4～20mA in the analog input unit 1-7 of high speed controller; Analog input unit sends signal to the signal processing unit of high-speed data controller again and processes; Metrical information through signal processing unit processes is sent to data by communication interface and the USB of high-speed data controller the demonstration directly perceived and the data storage that on the computer that analysis software is housed, realize data again, and analysis software adopts existing business software; High-speed data controller can also be accepted the order that the digital input unit 1-5 of measurement and control device sends and can the analogue signal of measurement be simulated to demonstration by the simulation output unit 1-6 of high-speed data controller except the order that can accept computer and send.
Claims (1)
1. automobile with compressed natural gas spray rail performance testing device, comprise high-speed data controller, spray rail driver and spray rail test cell, it is characterized in that: high-speed data controller comprises communication interface, direct current voltage regulator, signal processing unit, digital output unit, digital input unit, simulation output unit, analog input unit; Spray rail driver comprises spray rail driver element, coil resistance measuring unit and coil voltage/testing current unit; Spray rail test cell comprises spray rail, four pressure transmitters, four temperature transmitters and four flowmeters;
The output terminal of described high-speed data controller communication interface is connected with signal processing unit input end signal, the digital output end of signal processing unit is connected with digital output unit input end signal, the digital input end of signal processing unit is connected with digital input unit signal, the analog output of signal processing unit is connected with simulation output unit signal, the analog input end of signal processing unit is connected with analog input cell signal, direct current voltage regulator is signal processing unit, numeral output unit, numeral input unit, simulation output unit and analog input unit provide power supply,
The output terminal of the digital output unit in described high-speed data controller is connected with the input end signal of spray rail driver element, the output terminal of numeral output unit is connected with the input end signal of coil resistance measuring unit, the output terminal of coil resistance measuring unit is connected with the input end signal of analog input unit, and the output terminal of coil voltage/current measuring unit is connected with the input end signal of analog input unit;
The signal input part of described spray rail is connected with spray rail driver element output end signal, the signal output part of spray rail is connected with the input end signal of four pressure transmitters, four temperature transmitters and four flowmeters, and four pressure transmitters, four temperature transmitters are connected with analog input unit input end signal with four flowmeter output terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830487.7U CN203717208U (en) | 2013-12-16 | 2013-12-16 | Injection rail performance testing device of compressed natural gas vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830487.7U CN203717208U (en) | 2013-12-16 | 2013-12-16 | Injection rail performance testing device of compressed natural gas vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN203717208U true CN203717208U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320830487.7U Withdrawn - After Issue CN203717208U (en) | 2013-12-16 | 2013-12-16 | Injection rail performance testing device of compressed natural gas vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN203717208U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726966A (en) * | 2013-12-16 | 2014-04-16 | 中国计量学院 | Compressed natural gas vehicle injector rail performance testing device and testing method thereof |
-
2013
- 2013-12-16 CN CN201320830487.7U patent/CN203717208U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726966A (en) * | 2013-12-16 | 2014-04-16 | 中国计量学院 | Compressed natural gas vehicle injector rail performance testing device and testing method thereof |
| CN103726966B (en) * | 2013-12-16 | 2016-04-13 | 中国计量学院 | Automobile with compressed natural gas spray rail performance testing device and test method thereof |
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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 |
Granted publication date: 20140716 Effective date of abandoning: 20160413 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |