CN101004161A - Electric controlled tester and testing method for preformance of high-pressure oil pump in use for coaxial tracks of engines - Google Patents
Electric controlled tester and testing method for preformance of high-pressure oil pump in use for coaxial tracks of engines Download PDFInfo
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- CN101004161A CN101004161A CN 200610147404 CN200610147404A CN101004161A CN 101004161 A CN101004161 A CN 101004161A CN 200610147404 CN200610147404 CN 200610147404 CN 200610147404 A CN200610147404 A CN 200610147404A CN 101004161 A CN101004161 A CN 101004161A
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- 238000012360 testing method Methods 0.000 title claims abstract description 114
- 239000003921 oil Substances 0.000 claims abstract description 165
- 239000000295 fuel oil Substances 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims description 49
- 238000011056 performance test Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 11
- 238000007405 data analysis Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 238000013500 data storage Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 210000000352 storage cell Anatomy 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 3
- 239000010761 intermediate fuel oil Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000010998 test method Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The present invention discloses an electrically-controlled high-pressure oil pump performance testing device for engine common rail and its testing method. It includes the following several portions: testing table chassis, testing table drive system, fuel oil supply system, testing system and measuring control system. The testing system includes oil pump component and oil quantity measuring component. It is characterized by that the testing table drive system includes drive motor and rotating speed regulating device; oil pump component includes a high-pressure oil pump, said high-pressure oil pump is driven by testing table drive system. Said invention also provides the concrete structure and action of oil quantity measuring component and measuring control system. Said testing device can be used for simultaneously measuring and recording related parameters of high-pressure oil pump.
Description
Technical field
The present invention relates to a kind of engine electric-controlled high pressure oil pump method for testing performance, particularly a kind of engine common rail is with automatically controlled high pressure oil pump performance test apparatus and test method.
Background technique
Great technological progress, particularly common rail fuel combustion system that the application of electronic control technology on engine fuel injection system is regarded as motor are acknowledged as current state-of-the-art fuel injection system.Still does not have at present specially at rail altogether and generally test and judge oil pump performance indirectly by the system intergration with the method for testing performance of automatically controlled high pressure oil pump.
The testing apparatus of existing test method is seen accompanying drawing 1, and this testing apparatus 1 comprises: test stand chassis 11, be located at test stand drive system 12, fuel supply system 13, test parts 14 and TT﹠C system 15 on the test stand chassis.Described test parts 14 comprises high pressure oil pump 141, fuel common-rail 142, oil sprayer 143, fuel-flow control solenoid valve 144, injection control electromagnetic valve 145, fuel injection quantity measurement control valve 146, graduated cylinder 147, speed setting unit 148.The high pressure oil pump 141 of band fuel-flow control solenoid valve 144 is formed the complete common rail system of a cover with the oil sprayer 143 that fuel common-rail 142 and band spray control electromagnetic valve 145, drives operation by test stand drive system 12.In the process of the test, when needs carry out the oil pump performance detection, fuel injection quantity is measured control valve 146 be adjusted to the measuring position, measure n (can set) fuel injection quantity of each oil sprayer with graduated cylinder 147; Speed setting unit 148 can be set pump speed, can set different common rail pressures by TT﹠C system 15 control fuel-flow control solenoid valves 144, in addition, TT﹠C system 15 also needs to control spraying control electromagnetic valve 145, so just can obtain the oil pump feed characteristic under the different operating modes (rotating speed and rail pressure).But therefore the fuel injection quantity that records can not directly reflect the high pressure oil pump performance owing to be subjected to the spray characteristic influence of oil sprayer.
In addition, existing method needs the complete system of supporting rail altogether, oil sprayer and oil pump tested formation to test, and method is indirect, and the cost height does not possess versatility.
Summary of the invention
The objective of the invention is in order to overcome the above-mentioned shortcoming that existing test method exists a kind of engine common rail that provides with automatically controlled high pressure oil pump performance test apparatus and test method, have be easy to realize, highly versatile, characteristics that cost is low.
For solving above technical problem, the technical measures that the present invention takes are, engine common rail comprises with automatically controlled high pressure oil pump performance test apparatus: the test stand chassis, be arranged in test stand drive system, fuel supply system, pilot system and TT﹠C system on the test stand chassis; Described pilot system comprises oil pump parts and oil measurement parts; It is characterized in that,
Described test stand drive system comprises drive motor, is located at speed probe and speed setting unit on the drive motor output shaft;
Described oil pump parts comprise the high pressure oil pump that is driven operation by described test stand drive system, and described high pressure oil pump is communicated with fuel supply system by pump inlet pipe and oil pump return tube, and this high pressure oil pump is provided with the fuel-flow control solenoid valve;
Described oil measurement parts comprise relief valve, oil-feed flowmeter and the oil return flowmeter of fuel oil accumulator, pressure stabilizing cavity, adjustable in pressure; Described fuel oil accumulator is connected with high pressure oil pump by high-pressure oil pipe; On the described fuel oil accumulator pressure transducer is housed; The relief valve of described adjustable in pressure is serially connected on the pipeline section between fuel oil accumulator and the pressure stabilizing cavity; The bottom of described pressure stabilizing cavity is communicated with fuel supply system by the oil spilling return tube; Described oil-feed flowmeter and oil return flowmeter are located at respectively on pump inlet pipe pipeline section and the oil pump return tube pipeline section.
Above-mentioned rail altogether wherein, comprises that also one is used to support the support of fuel oil accumulator with automatically controlled high pressure oil pump performance test apparatus, is arranged on the operating table of test stand.
Above-mentioned rail altogether wherein, also comprises a fully-enclosed safe protective housing with automatically controlled high pressure oil pump performance test apparatus, covers on the top of pilot system, and safty shield is bright towards full impregnated of operator.
Above-mentioned altogether rail is with automatically controlled high pressure oil pump performance test apparatus, and wherein, described TT﹠C system comprises data acquisition unit, data analysis processing center, data display unit and control unit; Described data acquisition unit is gathered the signal of speed probe, fuel pressure transmitter, oil pump oil-feed flowmeter and oil pump oil return flowmeter, and be transferred to the data analysis processing center and handle, the result who handles is shown by data display unit, and realize rotating speed control, pressure control and Flow-rate adjustment by control unit.
Above-mentioned altogether rail is with automatically controlled high pressure oil pump performance test apparatus, and wherein, described data analysis processing center comprises data computation unit, data storage cell, curve generation unit, is linked in sequence; The output terminal of described curve generation unit is connected with data display unit; Described data storage cell is connected with control unit is two-way.
Rail is characterized in automatically controlled high pressure oil pump method for testing performance altogether, may further comprise the steps:
A, open test stand drive system power supply, the state that the test oil inlet pressure in the fuel supply system and temperature are set to test requirements document;
B, the speed setting unit of test stand drive system is adjusted to the required rotating speed of test, the fuel-flow control solenoid valve is set at maximum fuel feeding state, the fuel pressure that the relief valve by adjustable in pressure is set in the fuel oil accumulator is the required pressure of test;
After c, the system that treats turn round and stablize, by TT﹠C system record high pressure oil pump rotating speed, fuel oil accumulator intermediate fuel oil pressure, oil pump oil-feed flowmeter and oil pump oil return meter readings;
The position of the speed setting unit of d, fixation test platform drive system keeps rotating speed constant; Fixedly the fuel-flow control solenoid valve is maximum fuel feeding state; Set fuel pressure in the fuel oil accumulator by regulating relief valve, obtain one group under this rotating speed Electrocontrolled high-pressure oil pump feed ability with the test data of the variation of working pressure;
E, according to test requirements document, reset repeating step d behind the speed setting unit position of test stand drive system, can obtain under a plurality of speed conditions Electrocontrolled high-pressure oil pump feed ability with the test data of change of pressure;
F, fixedly the fuel-flow control solenoid valve is maximum fuel feeding state, fixed weir valve working state, keep the fuel pressure in the fuel oil accumulator constant, change test speed by regulating speed setting unit, can obtain one group under this working pressure Electrocontrolled high-pressure oil pump feed ability with the test data of change in rotational speed;
G, according to test requirements document, repeat f after resetting the relief valve working state, can obtain under a plurality of working pressure conditions Electrocontrolled high-pressure oil pump feed ability with the test data of rotation speed change;
H, fixed rotating speed controlling device position keep rotating speed constant; Secured adjusted relief valve working state keeps the fuel pressure in the fuel oil accumulator constant; By changing the working state of fuel-flow control solenoid valve, can obtain the test data of the flow adjustment range of one group of Electrocontrolled high-pressure oil pump under this rotating speed and working pressure;
I, according to test requirements document, repeat h after resetting speed setting unit position and relief valve working state, can obtain the flow adjustment range test data of Electrocontrolled high-pressure oil pump under different operating rotating speed, working pressure;
J, off-test, with speed setting unit be adjusted to 0, oil-break, outage.
Above-mentioned altogether rail is with automatically controlled high pressure oil pump method for testing performance, and wherein, the state that among the described step a test oil inlet pressure in the fuel supply system and temperature is set to test requirements document comprises the scope of control target value and permission variation.
Engine common rail of the present invention, is compared with automatically controlled high pressure oil pump performance test apparatus with the common rail of prior art owing to adopted above technological scheme with automatically controlled high pressure oil pump performance test apparatus and test method, and the good effect of its generation is tangible:
1), the structure of testing apparatus is simplified greatly.Removed band in the existing method spray the oil sprayer of control electromagnetic valve and band graduated cylinder oil measurement mechanism and with the supporting fuel common-rail of high pressure oil pump, adopt the fuel oil accumulator to add that the relief valve of an adjustable in pressure constitutes the back pressure simulator, make more direct to the Performance Detection of oil pump, versatility is also stronger, greatly reduces cost;
2), on pump inlet pipe and oil pump return tube, load onto meter of oil pump oil-feed flowmeter and oil pump oil return stream respectively, carry out oil measurement like this to measure more convenient simple and direct than the graduated cylinder of existing method;
3), in addition, cancelled original injection control electromagnetic valve, thereby made its TT﹠C system more succinct than the TT﹠C system of existing method.
4), by the pressure of control back pressure simulator, stable, adjustable oil pump working pressure environment is provided; By the rotating speed of accessory drive, provide stable, adjustable oil pump working speed.
5), by the flow measurement on the low pressure oil circuit, the supply capability of quantitative response high pressure oil pump.The electrical control actuator of oil pump is controlled and is realized the oil pump performance measurement by independent TT﹠C system.
6), test method is easy to realize, highly versatile, is convenient to the test oil pump performance.
Description of drawings
Concrete feature of the present invention, performance are further described by following embodiment and accompanying drawing thereof.
Fig. 1 is that prior art is total to the structural representation of rail with automatically controlled high pressure oil pump performance test apparatus.
Fig. 2 is that the present invention is total to the structural representation of rail with automatically controlled high pressure oil pump performance test apparatus.
Fig. 3 is that the present invention is total to the electrical block diagram of rail with TT﹠C system in the automatically controlled high pressure oil pump performance test apparatus.
Embodiment
See also Fig. 2.The present invention altogether rail comprises with automatically controlled high pressure oil pump performance test apparatus 2: test stand chassis 21, be located at test stand drive system 22, fuel supply system 23, pilot system 24 and TT﹠C system 25 on the test stand chassis.Wherein:
Drive motor (not shown) is being set on the test stand drive system 22, is being located at speed probe 222 and speed setting unit 221 on the drive motor output shaft.
Described oil measurement parts 242 comprise relief valve 2423, oil-feed flowmeter 2425 and the oil return flowmeter 2426 of fuel oil accumulator 2421, pressure stabilizing cavity 2422, adjustable in pressure, and oil-feed flowmeter 2425 and oil return flowmeter 2426 are separately positioned on pump inlet pipe 2412 pipeline sections and oil pump return tube 2413 pipeline sections.Described fuel oil accumulator is connected with high pressure oil pump by high-pressure oil pipe 2427, and this fuel oil accumulator is by being arranged on support 243 supportings on the test stand operating table.On this fuel oil accumulator, also be provided with fuel pressure transmitter 2424.The relief valve 2423 of described adjustable in pressure is serially connected on the pipeline section between fuel oil accumulator and the pressure stabilizing cavity.The bottom of described pressure stabilizing cavity 2422 is communicated with fuel supply system 23 by oil spilling return tube 2428.Be provided with a protective housing 244 above pilot system, safty shield is bright towards full impregnated of operator.
See also Fig. 3.This is the electrical block diagram of engine common rail of the present invention with TT﹠C system in the automatically controlled high pressure oil pump performance test apparatus.Described TT﹠C system 25 comprises data acquisition unit 251, data analysis processing center 252, data display unit 253 and control unit 254.Data acquisition unit is gathered the signal of speed probe 223, fuel oil accumulator fuel pressure transmitter 2424, oil pump oil-feed flowmeter 2425 and oil pump oil return flowmeter 2426, and be transferred to data analysis processing center 252 and handle, the result who handles is shown by data display unit 253, and realize rotating speed control, pressure control and Flow-rate adjustment by control unit 254.
In the TT﹠C system of engine common rail of the present invention with automatically controlled high pressure oil pump performance test apparatus, described data analysis processing center 252 comprises data computation unit 2521, data storage cell 2522, curve generation unit 2523, is linked in sequence; The output terminal of described curve generation unit 2523 is connected 253 with data display unit; Described data storage cell 2522 and 254 two-way connections of control unit.
The present invention altogether rail may further comprise the steps with automatically controlled high pressure oil pump method for testing performance:
A, check the installation and the oil circuit of whole test platform, guarantee in good conditionly, open test stand drive system power supply,, comprise control target value and allow the scope of variation the state that test oil inlet pressure in the fuel supply system and temperature are set to test requirements document;
B, with the speed setting unit of test stand drive system adjust to the test required rotating speed, the fuel-flow control solenoid valve is set at maximum fuel feeding state, and the fuel pressure of setting in the fuel oil accumulator by the relief valve of adjustable in pressure is test required pressure (oil pump working pressure);
After c, the system that treats turn round and stablize, by TT﹠C system record high pressure oil pump rotating speed, fuel oil accumulator intermediate fuel oil pressure, oil pump oil-feed flowmeter and oil pump oil return meter readings;
The position of the speed setting unit of d, fixation test platform drive system keeps rotating speed constant; Fixedly the fuel-flow control solenoid valve is maximum fuel feeding state; Set fuel pressure in the fuel oil accumulator by regulating relief valve, obtain one group under this rotating speed Electrocontrolled high-pressure oil pump feed ability with the test data of the variation of working pressure;
E, according to test requirements document, reset repeating step d behind the speed setting unit position of test stand drive system, can obtain under a plurality of speed conditions Electrocontrolled high-pressure oil pump feed ability with the test data of change of pressure;
F, fixedly the fuel-flow control solenoid valve is maximum fuel feeding state, fixed weir valve working state, keep the fuel pressure in the fuel oil accumulator constant, change test speed by regulating speed setting unit, can obtain one group under this working pressure Electrocontrolled high-pressure oil pump feed ability with the test data of change in rotational speed;
G, according to test requirements document, repeat f after resetting the relief valve working state, can obtain under a plurality of working pressure conditions Electrocontrolled high-pressure oil pump feed ability with the test data of rotation speed change;
H, fixed rotating speed controlling device position keep rotating speed constant; Secured adjusted relief valve working state keeps the fuel pressure in the fuel oil accumulator constant; By changing the working state of fuel-flow control solenoid valve, can obtain the test data of the flow adjustment range of one group of Electrocontrolled high-pressure oil pump under this rotating speed and working pressure;
I, according to test requirements document, repeat h after resetting speed setting unit position and relief valve working state, can obtain the flow adjustment range test data of Electrocontrolled high-pressure oil pump under different operating rotating speed, working pressure;
J, off-test, with speed setting unit be adjusted to 0, oil-break, outage.
The present invention can obtain following test data by above test:
Electrocontrolled high-pressure oil pump feed ability is with change in rotational speed;
Electrocontrolled high-pressure oil pump feed ability is with the variation of working pressure;
The flow adjustment range of Electrocontrolled high-pressure oil pump under different operating rotating speed, working pressure.The present invention provides stable, adjustable high pressure oil pump working pressure environment by the pressure (the back pressure simulator adds that by the fuel oil accumulator relief valve of adjustable in pressure constitutes) in the relief valve control back pressure simulator of adjustable in pressure.Drive rotating speed of motor in the test stand drive system by regulating oil pump, stable, adjustable high pressure oil pump working speed is provided.Measure the oil inlet quantity and the recirculating oil quantity of high pressure oil pump respectively by filler opening flowmeter, return opening flowmeter, can calculate the supply capability of high pressure oil pump simultaneously.By the control of independent TT﹠C system realization to the relief valve of high pressure oil pump, drive motor, adjustable in pressure, the measuring recording relevant parameter comprises: measure Electrocontrolled high-pressure oil pump feed ability with change in rotational speed simultaneously; Measure of the variation of Electrocontrolled high-pressure oil pump feed ability with working pressure; Measure the flow adjustment range of Electrocontrolled high-pressure oil pump under different operating rotating speed, working pressure, finish of the test of common rail with automatically controlled high pressure oil pump performance.The Performance Detection of oil pump is more direct, and versatility is also stronger, measures also more convenient simple and direct.
Claims (7)
1, engine common rail comprises with automatically controlled high pressure oil pump performance test apparatus: the test stand chassis, be arranged in test stand drive system, fuel supply system, pilot system and TT﹠C system on the test stand chassis; Described pilot system comprises oil pump parts and oil measurement parts; It is characterized in that,
Described test stand drive system comprises drive motor, is located at speed probe and speed setting unit on the drive motor output shaft;
Described oil pump parts comprise the high pressure oil pump that is driven operation by described test stand drive system, and described high pressure oil pump is communicated with fuel supply system by pump inlet pipe and oil pump return tube, and this high pressure oil pump is provided with the fuel-flow control solenoid valve;
Described oil measurement parts comprise relief valve, oil-feed flowmeter and the oil return flowmeter of fuel oil accumulator, pressure stabilizing cavity, adjustable in pressure; Described fuel oil accumulator is connected with high pressure oil pump by high-pressure oil pipe; On the described fuel oil accumulator pressure transducer is housed; The relief valve of described adjustable in pressure is serially connected on the pipeline section between fuel oil accumulator and the pressure stabilizing cavity; The bottom of described pressure stabilizing cavity is communicated with fuel supply system by the oil spilling return tube; Described oil-feed flowmeter and oil return flowmeter are located at respectively on pump inlet pipe pipeline section and the oil pump return tube pipeline section.
2, engine common rail according to claim 1 is characterized in that with automatically controlled high pressure oil pump performance test apparatus, comprises that also one is used to support the support of fuel oil accumulator, is arranged on the operating table of test stand.
3, engine common rail according to claim 1 is characterized in that with automatically controlled high pressure oil pump performance test apparatus, also comprises a fully-enclosed safe protective housing, covers on the top of pilot system, and safty shield is bright towards full impregnated of operator.
4, engine common rail according to claim 1 is characterized in that with automatically controlled high pressure oil pump performance test apparatus, and described TT﹠C system comprises data acquisition unit, data analysis processing center, data display unit and control unit; Described data acquisition unit is gathered the signal of speed probe, fuel pressure transmitter, oil pump oil-feed flowmeter and oil pump oil return flowmeter, and be transferred to the data analysis processing center and handle, the result who handles is shown by data display unit, and realize rotating speed control, pressure control and Flow-rate adjustment by control unit.
5, engine common rail according to claim 1 is characterized in that with automatically controlled high pressure oil pump performance test apparatus, and described data analysis processing center comprises data computation unit, data storage cell, curve generation unit, is linked in sequence; The output terminal of described curve generation unit is connected with data display unit; Described data storage cell is connected with control unit is two-way.
6, engine common rail is characterized in that with automatically controlled high pressure oil pump method for testing performance, may further comprise the steps:
A, open test stand drive system power supply, the state that the test oil inlet pressure in the fuel supply system and temperature are set to test requirements document;
B, the speed setting unit of test stand drive system is adjusted to the required rotating speed of test, the fuel-flow control solenoid valve is set at maximum fuel feeding state, the fuel pressure that the relief valve by adjustable in pressure is set in the fuel oil accumulator is the required pressure of test;
After c, the system that treats turn round and stablize, by TT﹠C system record high pressure oil pump rotating speed, fuel oil accumulator intermediate fuel oil pressure, oil pump oil-feed flowmeter and oil pump oil return meter readings;
The position of the speed setting unit of d, fixation test platform drive system keeps rotating speed constant; Fixedly the fuel-flow control solenoid valve is maximum fuel feeding state; Set fuel pressure in the fuel oil accumulator by regulating relief valve, obtain one group under this rotating speed Electrocontrolled high-pressure oil pump feed ability with the test data of the variation of working pressure;
E, according to test requirements document, reset repeating step d behind the speed setting unit position of test stand drive system, can obtain under a plurality of speed conditions Electrocontrolled high-pressure oil pump feed ability with the test data of change of pressure;
F, fixedly the fuel-flow control solenoid valve is maximum fuel feeding state, fixed weir valve working state, keep the fuel pressure in the fuel oil accumulator constant, change test speed by regulating speed setting unit, can obtain one group under this working pressure Electrocontrolled high-pressure oil pump feed ability with the test data of change in rotational speed;
G, according to test requirements document, repeat f after resetting the relief valve working state, can obtain under a plurality of working pressure conditions Electrocontrolled high-pressure oil pump feed ability with the test data of rotation speed change;
H, fixed rotating speed controlling device position keep rotating speed constant; Make state on the secured adjusted relief valve, keep the fuel pressure in the fuel oil accumulator constant; By making state on the change fuel-flow control solenoid valve, can obtain the test data of the flow adjustment range of one group of Electrocontrolled high-pressure oil pump under this rotating speed and working pressure;
I, according to test requirements document, repeat h after resetting speed setting unit position and relief valve working state, can obtain the flow adjustment range test data of Electrocontrolled high-pressure oil pump under different operating rotating speed, working pressure;
J, off-test, with speed setting unit be adjusted to 0, oil-break, outage.
7, engine common rail according to claim 6 is with automatically controlled high pressure oil pump method for testing performance, it is characterized in that the scope that the state that among the described step a test oil inlet pressure in the fuel supply system and temperature is set to test requirements document comprises control target value and allows to change.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610147404 CN101004161A (en) | 2006-12-18 | 2006-12-18 | Electric controlled tester and testing method for preformance of high-pressure oil pump in use for coaxial tracks of engines |
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| CN 200610147404 CN101004161A (en) | 2006-12-18 | 2006-12-18 | Electric controlled tester and testing method for preformance of high-pressure oil pump in use for coaxial tracks of engines |
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Cited By (22)
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| CN101761471A (en) * | 2008-11-10 | 2010-06-30 | 扬动股份有限公司 | Performance tester of diesel engine oil pump assembly |
| CN102889158A (en) * | 2012-10-12 | 2013-01-23 | 机科发展科技股份有限公司 | Single injection quantity detector of common rail oil injector |
| CN102900692A (en) * | 2008-05-02 | 2013-01-30 | 株式会社川本制作所 | Insert molding product |
| CN103061942A (en) * | 2013-02-05 | 2013-04-24 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Device and method for detecting consistency of flow rate of control valve component of oil injector |
| CN103195633A (en) * | 2013-04-26 | 2013-07-10 | 阴山 | Full-automatic fuel-injection quantity and fuel injection law testing equipment |
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| CN101896710B (en) * | 2007-12-10 | 2016-03-23 | 大陆汽车有限公司 | Fuel pressure regulating system |
| CN102900692A (en) * | 2008-05-02 | 2013-01-30 | 株式会社川本制作所 | Insert molding product |
| CN101761471A (en) * | 2008-11-10 | 2010-06-30 | 扬动股份有限公司 | Performance tester of diesel engine oil pump assembly |
| CN102889158A (en) * | 2012-10-12 | 2013-01-23 | 机科发展科技股份有限公司 | Single injection quantity detector of common rail oil injector |
| CN102889158B (en) * | 2012-10-12 | 2016-02-17 | 机科发展科技股份有限公司 | Single injection quantity detector of common rail oil injector |
| CN103061942A (en) * | 2013-02-05 | 2013-04-24 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Device and method for detecting consistency of flow rate of control valve component of oil injector |
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