阅读说明：本技术 一种喷油器性能测量装置 (A kind of fuel injector device for measuring properties ) 是由 刘辰朋 朱骏 桂勇 文李明 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种喷油器性能测量装置,属于测量技术领域。该喷油器性能测量装置用于测量喷油器的流通能力,包括动力循环组件、燃油共轨和测量组件；其中,动力循环组件包括为喷油器提供所需燃油的燃油泵；燃油共轨设置有至少两个与喷油器连通的接口,燃油共轨的一端与燃油泵连通；测量组件与燃油泵连接,用于测量喷油器的燃油流通以及回收燃油。本发明提供的喷油器性能测量装置,通过在燃油共轨上设置有至少两个与被测件喷油器连通的接口,可同时测量至少两个喷油器；动力循环组件为测量提供动力,测量组件完成实际测量任务,三个模块同时工作,实现同时对多个被测件喷油器的测量。(The invention discloses a kind of fuel injector device for measuring properties, belong to field of measuring technique.The fuel injector device for measuring properties is used to measure the negotiability of fuel injector, including power cycle component, fuel common-rail and measurement component；Wherein, power cycle component includes that the fuel pump of required fuel oil is provided for fuel injector；Fuel common-rail is provided at least two interfaces being connected to fuel injector, and one end of fuel common-rail is connected to fuel pump；Measurement component is connect with fuel pump, for measuring the fuel flow communication and recycling fuel oil of fuel injector.Fuel injector device for measuring properties provided by the invention can measure at least two fuel injectors by being provided at least two interfaces being connected to measured piece fuel injector on fuel common-rail simultaneously；Power cycle component provides power for measurement, and measurement component completes actual measurement task, and three modules work at the same time, and realize the measurement simultaneously to multiple measured piece fuel injectors.)

1. a kind of fuel injector device for measuring properties, for measuring the negotiability of fuel injector (5), which is characterized in that including,

Power cycle component (1), the fuel pump (11) including fuel oil needed for being provided for the fuel injector (5)；

Fuel common-rail (3), the fuel common-rail (3) are provided at least two interfaces being connected to the fuel injector (5), the combustion One end of oily common rail (3) is connected to the fuel pump (11)；

It measures component (4), is connect with the fuel pump (11), for measuring fuel flow communication and the recycling of the fuel injector (5) The fuel oil.

2. fuel injector device for measuring properties as described in claim 1, which is characterized in that the measurement component (4) includes first Part (41) and the second metering part (42) are measured, the oil inlet in the fuel injector (5) is arranged in first metering part (41), described Oil outlet of second metering part (42) setting in the fuel injector (5).

3. fuel injector device for measuring properties as claimed in claim 2, which is characterized in that second metering part (42) position is high It is gradually dropped in the fuel pump (11), and from the pipeline height between second metering part (42) to the fuel pump (11) It is low.

4. fuel injector device for measuring properties as claimed in claim 2, which is characterized in that the measurement component (4) further includes setting It sets and is passed in the first pressure sensor (43) on the fuel injector (5) and the second pressure being arranged on the fuel common-rail (3) Sensor (45), and/or the temperature sensor (44) being arranged on the fuel common-rail (3).

5. fuel injector device for measuring properties as described in claim 1, which is characterized in that the power cycle component (1) is also wrapped The first high-pressure oil pipe (16) and check valve (12) are included, first high-pressure oil pipe (16) is arranged in the fuel-displaced of the fuel pump (11) Between mouth and the oil inlet of the fuel common-rail (3), the check valve (12) is arranged on first high-pressure oil pipe (16), and The opening direction of the check valve (12) is towards the fuel common-rail (3).

6. fuel injector device for measuring properties as described in claim 1, which is characterized in that the power cycle component (1) is also wrapped The second high-pressure oil pipe (17) and control valve (15) are included, second high-pressure oil pipe (17) is arranged in the interface and the fuel injector (5) between oil inlet, the control valve (15) setting in the inside of the fuel injector (5), the control valve (15) with it is described Second high-pressure oil pipe (17) connection.

7. fuel injector device for measuring properties as described in claim 1, which is characterized in that the power cycle component (1) is also wrapped Include the first oil return pipe (18) and unloading valve (13), oil outlet of the first oil return pipe (18) setting in the fuel common-rail (3) Between the oil inlet of the fuel pump (11), the unloading valve (13) is arranged on first oil return pipe (18), and described Unloading valve (13) is arranged close to the top of the fuel common-rail (3), and the outlet port of the unloading valve (13) is higher than the fuel oil Pump the oil inlet position of (11).

8. fuel injector device for measuring properties as described in claim 1, which is characterized in that the power cycle component (1) is also wrapped Include the second oil return pipe (19) and oil filter (14), the second oil return pipe (19) setting the fuel injector (5) oil outlet and Between the oil inlet of the fuel pump (11), the oil filter (14) is arranged on second oil return pipe (19).

9. fuel injector device for measuring properties as described in claim 1, which is characterized in that the interface is provided with crossover sub (31) and/or plug (32), the crossover sub (31) are used to connect the interface and the fuel injector (5)；When the interface When not used, the plug (32) is installed on the interface.

10. fuel injector device for measuring properties as described in claim 1, which is characterized in that fuel injector (5) the performance measurement dress Setting further includes electronic control unit (2), and the electronic control unit (2) is electrically connected with the measurement component (4) and receives and sentence Data measured by disconnected measurement component (4), the electronic control unit (2) and the power cycle component (1) are electrically connected and control Make the working condition of the power cycle component (1).

Technical field

The present invention relates to field of measuring technique more particularly to a kind of fuel injector device for measuring properties.

Background technique

With the promotion of diesel engine performance and becoming sternly for emission control regulations, diesel fuel injection system is proposed more High requirement directly affects burned in fuel oil jet power and subsequent engine as the fuel injector of fuel oil injection core Journey；For optimization fuel injector design, its circulating resistance is reduced, there is an urgent need to the negotiabilities to fuel injector to carry out accurately online survey Amount.

Currently, fuel injector negotiability measurement mostly uses single-time injection instrument, but single-time injection instrument can only measure one every time The actual circulation ability of fuel injector causes measurement process inconvenient, and production efficiency is low.

Summary of the invention

The purpose of the present invention is to provide a kind of fuel injector device for measuring properties, can simultaneously accurately measure multiple oil spouts The negotiability of device improves production efficiency.

In order to achieve this, the invention adopts the following technical scheme:

A kind of fuel injector device for measuring properties, for measuring the negotiability of fuel injector, including,

Power cycle component, including providing the fuel pump of required fuel oil for fuel injector；

Fuel common-rail, fuel common-rail are provided at least two interfaces being connected to fuel injector, one end of fuel common-rail and combustion Oil pump connection；

Component is measured, is connect with fuel pump, for measuring the fuel flow communication and recycling fuel oil of fuel injector.

Optionally, measurement component include first metering part and second metering part, first metering part be arranged in fuel injector into The oil outlet of fuel injector is arranged in hydraulic fluid port, the second metering part.

Optionally, the second metering part position is higher than fuel pump, and from the second metering part to the pipeline height between fuel pump It gradually decreases.

Optionally, measurement component further includes the first pressure sensor being arranged on fuel injector and is arranged on fuel common-rail Second pressure sensor, and/or be arranged on fuel common-rail temperature sensor.

Optionally, power cycle component further includes the first high-pressure oil pipe and check valve, and the first high-pressure oil pipe is arranged in fuel oil Between the oil outlet of pump and the oil inlet of fuel common-rail, check valve is arranged on the first high-pressure oil pipe, and the opening side of check valve To towards fuel common-rail.

Optionally, power cycle component further includes the second high-pressure oil pipe and control valve, and the second high-pressure oil pipe is arranged in interface Between the oil inlet of fuel injector, the inside of fuel injector is arranged in control valve, and control valve is connect with the second high-pressure oil pipe.

Optionally, power cycle component further includes the first oil return pipe and unloading valve, and the first oil return pipe is arranged in fuel common-rail Oil outlet and fuel pump oil inlet between, unloading valve is arranged on the first oil return pipe, and unloading valve is close to fuel common-rail Top setting, the outlet port of unloading valve are higher than the oil inlet position of fuel pump.

Optionally, power cycle component further includes the second oil return pipe and oil filter, and fuel injector is arranged in the second oil return pipe Between oil outlet and the oil inlet of fuel pump, oil filter is arranged on the second oil return pipe.

Optionally, interface is provided with crossover sub and/or plug, and crossover sub is used for connecting interface and fuel injector；When When not used, plug is installed on interface to interface.

Optionally, fuel injector device for measuring properties further includes electronic control unit, electronic control unit and measurement component electricity It connects and receives and judge to measure data measured by component, electronic control unit and power cycle component are electrically connected and control dynamic The working condition of power recirculation assembly.

The invention has the benefit that

Fuel injector device for measuring properties provided by the invention is used to measure the negotiability of fuel injector, by fuel common-rail On be provided at least two interfaces being connected to fuel injector, at least two fuel injectors can be measured simultaneously；Power cycle component is to survey Amount provides power, and measurement component completes actual measurement task, and three modules work at the same time, and realize the survey simultaneously to multiple fuel injectors Amount.

Detailed description of the invention

Fig. 1 is the fuel injector device for measuring properties working principle diagram that the specific embodiment of the invention provides.

In figure:

1- power cycle component；2- electronic control unit；3- fuel common-rail；4- measures component；5- fuel injector；

11- fuel pump；12- check valve；13- unloading valve；14- oil filter；15- control valve；The first high-pressure oil pipe of 16-；17- Second high-pressure oil pipe；The first oil return pipe of 18-；The second oil return pipe of 19-；

31- crossover sub；32- plug；

41- first measures part；42- second measures part；43- first pressure sensor；44- temperature sensor；45- second is pressed Force snesor；

51- injector body；52- nozzle.

Specific embodiment

To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below It will be described in further detail in conjunction with technical solution of the attached drawing to the embodiment of the present invention, it is clear that described embodiment is only It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.

In the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection ", " fixation " are answered It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection, It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary Logical or two elements interaction relationship.For the ordinary skill in the art, can be understood with concrete condition above-mentioned The concrete meaning of term in the present invention.

In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower" It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above " Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of First feature horizontal height is less than second feature.

To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.

With the promotion of diesel engine performance and becoming sternly for emission control regulations, diesel fuel injection system is proposed more High requirement directly affects burned in fuel oil jet power and subsequent engine as the fuel injector 5 of fuel oil injection core Journey.For the design for optimizing fuel injector 5, its circulating resistance is reduced, there is an urgent need to the negotiability progress to fuel injector 5 is accurate online Measurement.Currently, 5 negotiability measurement of fuel injector mostly uses single-time injection instrument, but single-time injection instrument can only measure a spray every time The actual circulation ability of oily device 5, measurement process is inconvenient, and production efficiency is low.

To solve the above problems, the present embodiment provides a kind of fuel injector device for measuring properties, for measuring the stream of fuel injector 5 Logical ability, including power cycle component 1, fuel common-rail 3 and measurement component 4.Wherein, power cycle component 1 includes for fuel injector 5 The fuel pump 11 of fuel oil needed for providing；Fuel common-rail 3 is provided at least two interfaces being connected to fuel injector 5, fuel common-rail 3 One end is connected to fuel pump 11；Measurement component 4 is connect with fuel pump 11, for measuring fuel flow communication and the recycling of fuel injector 5 Fuel oil.By being provided at least two interfaces being connected to fuel injector 5 on fuel common-rail 3, at least two sprays can be measured simultaneously Oily device 5；Power cycle component 1 provides power for measurement, and measurement component 4 completes actual measurement task, and three modules work at the same time, Realize the measurement simultaneously to multiple fuel injectors 5.

Optionally, multiple interfaces are provided on fuel common-rail 3, interface is provided with crossover sub 31 and/or plug 32, turns Changing-over head 31 is connected for connecting interface and fuel injector 5；When interface when not used, plug 32 is installed on interface.In the present embodiment, As shown in Figure 1, there are five interfaces for setting on fuel common-rail 3, if there are three crossover sub 31 and two spare plugs 32, three are connect Mouth is connected with fuel injector 5 by crossover sub 31 respectively, other two interface distinguishes installed plug 32.Optionally, fuel common-rail 3 Internal fuel volume is big, it is made to meet the pressure fluctuating in inner of fuel common-rail 3 when multiple fuel injectors 5 work at the same time no more than 1% Technical requirements.In the present embodiment, 3 volume of fuel common-rail is two decaliters, can bear 1,250 bars of oil pressure.In reality In application process, the model of fuel injector 5 is possibly different from, and the interface of corresponding fuel injector 5 is not also identical, according to different The oil pipe for the dimension that the selection of 5 interface of fuel injector is connect with fuel injector 5, to meet the circulation energy of further types of fuel injector 5 Power measurement.

To complete various control function, fuel injector device for measuring properties further includes electronic control unit 2, electronic control unit 2 are electrically connected with measurement component 4 and receive and judge to measure data, electronic control unit 2 and power cycle group measured by component 4 Part 1 is electrically connected and controls the working condition of power cycle component 1.

As shown in Figure 1, in the present embodiment, power cycle component 1 include the first high-pressure oil pipe 16, the second high-pressure oil pipe 17, First oil return pipe 18 and the second oil return pipe 19 make 5 device for measuring properties of fuel injector form the closed circuit of fuel flow.Wherein:

First high-pressure oil pipe 16 is arranged between the oil outlet of fuel pump 11 and the oil inlet of fuel common-rail 3；Optionally, it moves Power recirculation assembly 1 includes check valve 12, and check valve 12 is arranged on the first high-pressure oil pipe 16, and the opening direction court of check valve 12 To fuel common-rail 3, on the one hand prevent compression shock from influencing the normal work of fuel pump 11；On the other hand the not work of fuel pump 11 is prevented When making, fuel oil flows back into the oil outlet of fuel pump 11 through the first high-pressure oil pipe 16.

Second high-pressure oil pipe 17 is arranged between interface and the oil inlet of fuel injector 5；Optionally, power cycle component 1 wraps Control valve 15 is included, the inside of fuel injector 5 is arranged in control valve 15, and control valve 15 is connect with the second high-pressure oil pipe 17.The present embodiment In, the signals such as start-up time, duration of control valve 15 are issued by electronic control unit 2, and fuel injector 5 is made to spray fuel oil.

First oil return pipe 18 is arranged between the oil outlet of fuel common-rail 3 and the oil inlet of fuel pump 11；Optionally, power Recirculation assembly 1 includes unloading valve 13, and unloading valve 13 is arranged on the first oil return pipe 18, and unloading valve 13 is close to fuel common-rail 3 Top setting, the outlet port of unloading valve 13 are higher than the oil inlet position of fuel pump 11, and effect is unloaded when system pressure reaches When the cracking pressure of lotus valve 13,3 off-load of fuel common-rail makes fuel oil flow into fuel oil from fuel common-rail 3 by the gravity of fuel oil Pump 11；When system pressure drops to the closing pressure of unloading valve 13, unloading valve 13 is closed.Unloading valve 13 passes through the first oil return pipe 18 It is connect with fuel pump 11, unloading valve 13 and fuel pump 11 are controlled by electronic control unit 2, realize that the pressure of fuel common-rail 3 is adjusted And safety relief.In the present embodiment, unloading valve 13 is ratio unloading valve.

Second oil return pipe 19 is arranged between the oil outlet of fuel injector 5 and the oil inlet of fuel pump 11；Optionally, power follows Ring assemblies 1 further include oil filter 14, and oil filter 14 is arranged on the second oil return pipe 19, and the fuel oil with impurity is avoided to flow into fuel oil In pump 11.

The negotiability of fuel injector 5 and the inner flow passage geometry of fuel injector 5, the fuel oil of oil inlet and oil outlet both ends It sprays pressure difference and Media density is related.

Optionally, measurement component 4 includes the first metering part 41 and the second metering part 42, and the first metering part 41 is arranged in oil spout The oil outlet of fuel injector 5 is arranged in the oil inlet of device 5, the second metering part 42, passes through the first metering part 41 and the second metering part 42 The injection flow to fuel injector 5 come, to judge shadow caused by negotiability of the inner flow passage geometry to fuel injector 5 It rings.Optionally, the second metering 42 position of part is higher than fuel pump 11, and high from the second metering part 42 to the pipeline between fuel pump 11 Degree gradually decreases, and using the gravity of fuel oil, is recycled to fuel pump 11 convenient for fuel oil.Electronic control unit 2 receives first The measurement data for measuring part 41 and the second metering part 42, is compared, is corrected, obtain the information of more accurate fuel injection flow rate. Optionally, the first metering part 41 is the measuring device based on transient flow, and the second metering part 42 is fuel metering unit.

In the present embodiment, the first metering part 41 is arranged on the second high-pressure oil pipe 17, measures on the second high-pressure oil pipe 17 Transient flow, the second quantifier 42 is mounted on the second oil return pipe 19, is sprayed on the second quantifier 42 in fuel oil by fuel injector 5 Afterwards, it is flow back into fuel pump 11 and is recycled by the second oil return pipe 19.

Optionally, be measurement fuel injector 5 oil inlet and oil outlet both ends fuel oil pressure difference, measurement component 4 further includes the One pressure sensor 43 and second pressure sensor 45.Specifically, first pressure sensor 43 is arranged on fuel injector 5, is used for Measure the intracorporal fuel pressure of 5 chamber of fuel injector.Fuel injector includes injector body 51 and the spray that is arranged in injector body 51 Mouth 52, different fuel injectors 5, the spray orifice scheme on nozzle 52 are also different.It is designed for optimization fuel injector 5, reduces its circulation Resistance, there is an urgent need to the negotiabilities to injector body 51 and nozzle 52 to carry out accurate on-line measurement.In the present embodiment, first Pressure sensor 43 is mounted on nozzle 52, and the pressure difference between first pressure sensor 43 and atmospheric pressure is 52 both ends of nozzle Fuel oil spray pressure difference, and then measure nozzle 52 negotiability.Optionally, first pressure sensor 43 is micro pressure sensing Device.Second pressure sensor 45 is arranged on fuel common-rail 3, and second pressure sensor 45 and first pressure sensor 43 are for surveying The fuel oil for measuring 51 both ends of injector body sprays pressure difference, and then measures the negotiability of injector body 51；By respectively to spray The fuel oil of oily device ontology 51 and nozzle 52 sprays the measurement of pressure difference, so that synthesis obtains the oil inlet and oil outlet two of fuel injector 5 The fuel oil at end sprays pressure difference, improves the accuracy and reliability of measurement result.

In the present embodiment, measurement component 4 further includes temperature sensor 44, and temperature sensor 44 is arranged on fuel common-rail 3, For the fuel oil temperature of measurement, to obtain corresponding fuel density information, the density of fuel oil is avoided to be affected by temperature and cause Error.

First metering part 41 and the second metering obtained flow information of part 42；Second pressure sensor 45 and first pressure The pressure difference at 51 both ends of injector body measured by sensor 43；Nozzle measured by first pressure sensor 43 and atmospheric pressure The pressure difference at 52 both ends；And fuel oil temperature information measured by temperature sensor 44, it is based on above- mentioned information, electronic control unit 2 Can COMPREHENSIVE CALCULATING fuel injector 5 negotiability, keep the performance measurements of fuel injector 5 more accurate.

5 negotiability measurement process of multiple fuel injectors on fuel injector device for measuring properties is consistent, and the present embodiment is with wherein For the negotiability measurement of one fuel injector 5, illustrate the course of work of 5 device for measuring properties of fuel injector:

The first step, the fuel oil in fuel pump 11 are entered in fuel common-rail 3 by the first high-pressure oil pipe 16 through check valve 12；

Second step, fuel common-rail 3 is connected to by crossover sub 31 and the second high-pressure oil pipe 17 with fuel injector 5, and makes fuel oil Into in fuel injector 5；Second pressure sensor 45 measures the fuel pressure of 5 input end of fuel injector, while the second high-pressure oil pipe 17 On first metering part 41 measure 5 input end of fuel injector fuel flow, temperature sensor 44 measure fuel oil temperature, second pressure Data information is fed back to electronic control unit 2 respectively by sensor 45 and the first metering part, temperature sensor 44；

Third step, the signal that the control valve 15 inside fuel injector 5 is issued according to electronic control unit 2, control fuel injector 5 spray The second metering part 42 being arranged on fuel oil to the second oil return pipe 19 is penetrated, the second metering part 42 measures the fuel oil of 5 outlet end of fuel injector Flow, while first pressure sensor 43 measures the fuel pressure of 5 outlet end of fuel injector, the second metering part and first pressure sensing Data information is fed back to electronic control unit 2 respectively by device；

4th step, the fuel oil ejected from fuel injector 5 are back to fuel pump by the second metering part 42 and the second oil return pipe 19 11；

Electronic control unit 2 obtains the fuel flow of fuel injector 5, fuel oil jet pressure according to the data that measurement component 4 acquires Difference and fuel oil temperature information, to obtain the negotiability of fuel injector 5.

Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention Protection scope within.