CN203879640U - Electronic fuel-injection system for controlling engine - Google Patents
Electronic fuel-injection system for controlling engine Download PDFInfo
- Publication number
- CN203879640U CN203879640U CN201420186088.6U CN201420186088U CN203879640U CN 203879640 U CN203879640 U CN 203879640U CN 201420186088 U CN201420186088 U CN 201420186088U CN 203879640 U CN203879640 U CN 203879640U
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- Prior art keywords
- fuel
- control unit
- engine
- motor
- electronic
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- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 title claims abstract description 49
- 239000007924 injection Substances 0.000 title claims abstract description 49
- 239000000446 fuel Substances 0.000 claims abstract description 79
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 41
- 239000001301 oxygen Substances 0.000 claims abstract description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000010304 firing Methods 0.000 claims description 16
- 239000002828 fuel tank Substances 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model discloses an electronic fuel-injection system for controlling an engine. The electronic fuel-injection system comprises an electronic control unit and further comprises an intake manifold, an oxygen sensor, a flywheel assembly and an ignition coil assembly. The electronic control unit is connected with one or more sensors arranged in the engine and used for receiving signals from the sensors so as to generate signals to control the fuel air ratio and ignition time of the engine. The intake manifold is arranged in an air inlet channel of the engine and used for controlling the flow and the flow speed of fuel and air which are input to the engine according to the signals from the electronic control unit. The oxygen sensor is arranged on an exhaust channel of the engine and used for detecting residual oxygen in exhaust gas and feeding a detection result back to the electronic control unit. The flywheel assembly is arranged in the engine and driven by a crank of the engine to rotate due to combustion of the fuel in the engine. The ignition coil assembly is arranged in the engine and used for detecting the rotating speed of the flywheel assembly and controlling ignition time of the engine according to the signals from the electronic control unit. The electronic fuel-injection system has multiple functions and allows the engine to reliably and accurately adopt different fuel air ratios and ignition time in different operating modes.
Description
Technical field
The utility model relates to a kind of Fuel Control System for control engine, and relates more specifically to a kind of electronic fuel injection system for control engine.
Background technique
Electronic fuel injection system (being called for short " electric injection system " or " EFI ") is widely used in dissimilar engine application.In general, electronic fuel-injection system can be used for fuel-air ratio and the firing time of control engine.But existing electronic fuel injection system does not possess multi-functional control, to allow motor very reliably and accurately to use different fuel-air ratios and firing time in multiple different operating modes.
Model utility content
The purpose of this utility model is overcome or improve in fact above-mentioned shortcoming, or be more generally to provide a kind of improved Motronic control maps fuel injection system, relate in particular to the structure and the configuration that improve the various signal emitters in Motronic control maps fuel injection system.
According to first aspect of the present utility model, a kind of electronic fuel injection system for control engine is provided, described electronic fuel injection system comprises: electronic control unit, described electronic control unit is arranged to be connected with one or more sensors that are arranged in motor, thereby and receive signals and generate fuel-air ratio and the firing time of signal with control engine from described one or more sensors; Wherein said electronic fuel injection system also comprises: intake manifold, and described intake manifold is arranged on the air inlet passage of motor, is input to the fuel of motor and the flow of air and flow velocity for basis from the SC sigmal control of electronic control unit; Oxygen sensor, described oxygen sensor is arranged on the exhaust passage of motor, for detecting the remnant oxygen in exhaust, and testing result is fed back to described electronic control unit; Fly wheel assembly, described fly wheel assembly is arranged in motor, and the crank-driven rotation of launched machine because fuel burns in motor; And ignition coil assembly, described ignition coil assembly is arranged on the rotating speed for detection fly wheel assembly in motor, and according to the firing time of the SC sigmal control motor from electronic control unit.
Preferably, described electronic control unit comprises the closed loop control loop with feedback control loop and feedforward control loop; Wherein, in described feedback control loop, the oxygen measurement result that described electronic control unit records based on described oxygen sensor is adjusted fuel flow rate and firing time; And in described feedforward control loop, intake air temperature and pressure that described electronic control unit utilizes described multiple sensor to record, engine temperature, one or more flow and the timings of determining the fuel that is input to motor in engine speed and mass flow rate.
Preferably, described intake manifold comprises: fuel tank, and described fuel tank is for fuel-in-storage; Petrolift, described petrolift by described electronic control unit control with receive from described fuel tank fuel and and then the fuel of pressurization is provided at least one fuel injector, described at least one fuel injector injects fuel in described motor.
Preferably, the described fuel tank of described intake manifold is connected by fuel supply pipe with petrolift, and described petrolift is connected by U-shaped fuel pipe with described at least one fuel injector.
Preferably, described intake manifold also comprises the throttle valve of the described air inlet passage that is arranged on motor, the dish type valve head that described throttle valve has valve shaft and carried by valve shaft; Described throttle valve is controlled described electronic unit and is controlled, thereby goes forward side by side and change the opening size restriction air mass flow of described air inlet passage with rotation in described air inlet passage.
Preferably, described oxygen sensor is integrated on the opening of cylinder head of described motor, and one end of described oxygen sensor is inserted into described exhaust passage to detect the remnant oxygen in exhaust.
Preferably, described fly wheel assembly comprises: flywheel body; Fly frame, described fly frame is arranged with one heart and is connected with flywheel body; Timing gear, described timing gear is installed to described fly frame, and described timing gear also comprises the multiple teeth around its periphery.
Preferably, described ignition coil assembly comprises: position transducer, described position transducer is near described fly wheel assembly setting, wherein one or more position or rotational speed with the multiple teeth by detecting described timing gear measured the rotating speed of motor, and the engine speed detecting is sent to described electronic control unit; Spark coil, described spark coil is connected with described electronic control unit, the firing time of spark coil described in described electronic control unit control.
Further feature of the present utility model and aspect will become apparent by considering the following detailed description and accompanying drawing.
Brief description of the drawings
In the mode of example, mode of execution of the present utility model is described referring now to accompanying drawing, wherein:
Fig. 1 is according to the block diagram of the control loop of the motor of a mode of execution of the present utility model and the electric injection system in motor;
Fig. 2 is the functional block diagram of the electric injection system of Fig. 1;
Fig. 3 A is the stereogram of two different angles of the motor of Fig. 1 and the intake manifold of electric injection system;
Fig. 3 B is the motor of Fig. 3 A and the phantom of intake manifold;
Fig. 3 C is the exploded view of the intake manifold of Fig. 3 A;
Fig. 4 A is the motor of Fig. 1 and the view that is integrated in the oxygen sensor in cylinder head of electric injection system;
Fig. 4 B is the exploded view of the oxygen sensor of Fig. 4 A;
Fig. 5 A is the view of the motor of Fig. 1 and the fly wheel assembly with timing gear of electric injection system;
Fig. 5 B is the view of the another side of the fly wheel assembly of Fig. 5 A;
Fig. 5 C is the exploded view of the fly wheel assembly of Fig. 5 A;
Fig. 6 A is the view of the motor of Fig. 1 and the ignition coil assembly with RPM speed probe of electric injection system;
Fig. 6 B is the exploded view of the ignition coil assembly of Fig. 6 A; And
Fig. 7 illustrates Fig. 3 A, the configuration of the assembly of 5A and 6A in motor.
Before in detail explaining any structure of the present utility model, should be understood that the utility model is not limited to set forth in the following description in its application or accompanying drawing below shown in the structure of parts and the details of layout.The utility model can have other structure and can be put into practice or realize in every way.
Embodiment
Referring now to Fig. 1, show according to the motor 100 of a mode of execution of the present utility model and the control loop that is arranged on the electric injection system 102 in this motor.Exemplary engine shown in Fig. 1 mainly comprises the gas-entered passageway 104 of combustion-supporting air, fuel injector 106, engine chamber 108, exhaust passage 110 and catalyst 112.In the mode of execution of, firing chamber 108 mainly comprises spark coil 114, bent axle 116, fly wheel assembly 118 and flywheel monitoring sensor 120.It should be noted in the discussion above that the critical piece that only shows motor 100 in Fig. 1.In other words, motor can comprise the general assembly that other are not shown in Figure 1.
Electric injection system 102 of the present utility model comprises electronic control unit (ECU), it is connected with the various sensors in motor, and (be for example suitable in different operating modes, best power source pattern, most economical pattern, minimum discharge mode etc.) accurately fuel-air ratio and the firing time of control engine.
In the mode of execution of, electric injection system 102 can operate to control fuel-air ratio, thereby to keeps fuel-air ratio in ± 1% tolerance range, to guarantee acceptable emission result.In addition, electric injection system 102 also has controls function firing time, and has the Safety function that depends on load and discharge.As shown in Figure 1, electric injection system control loop of the present utility model is a closed-loop system, and it comprises two interactional feedback control loops and feedforward control loop.
In feedforward control loop, intake air temperature/pressure A, engine temperature B, engine speed RPM C and/or mass flow rate etc., by various sensor measurements.The sensor information that utilization records, and based on the specific look-up table 122 of motor or by application self-learning algorithm, electronic control unit can be determined the correct amount and the particular moment that are provided to the fuel of firing chamber 108 by fuel injector 106.Preferably, feedforward control loop can be revised the variation based on height.It should be noted in the discussion above that in other embodiments, also can in feedforward control loop, be used by other parameter of other sensor measurement.
On the other hand, in feedback control loop, the remnant oxygen in exhaust is measured for predicting actual discharge quality by oxygen sensor 124.In one embodiment, oxygen sensor 124 can be arrowband oxygen sensor or can be broadband oxygen sensor.Oxygen measurement result based on recording, and by Adaptive Observer 126 and nonlinear control algorithm 128 are provided in feedback control loop, electronic control unit can be adjusted fuel flow rate and firing time.In other words, feedback control loop provides the device for adjusting discharge quality.
With reference to Fig. 2, the functional block diagram of the electric injection system 102 shown in Fig. 1 is shown.This electric injection system has petrolift 130, fuel injector 106, induction type ignition device 114, oxygen sensor 124, engine temperature sensing unit 132, engine shutdown switch 134, crankshaft position sensor 120, dentation flywheel 118, calibration and diagnosis of partial 136, electronic speed regulator 138, carbon monoxide transducer 140, user's power supply 142, AC staor winding 144, AC/DC voltage regulator module 146, manifold absolute pressure sensor 148 and throttle body 150.
Particularly, the electronic control unit (ECU) of electric injection system receives from oxygen sensor 124, engine temperature sensing unit 132, engine shutdown switch 134, with operatively (not necessarily mechanically) crankshaft position sensor 120 of being connected of dentation flywheel 118, carbon monoxide transducer 140, be connected to the metrical information of AC/DC voltage regulator module 146 and manifold absolute pressure sensor 148 etc. of user's power supply 142 and AC staor winding 144 and position based on throttle body 150 and determine operational condition and the load of motor, and then control petrolift 130, fuel injector 106, the operation of induction type ignition device 114 and electronic speed regulator 138.In one embodiment, the calibration of electric injection system and diagnosis of partial 136 are for calibrating electric injection system.
Fig. 3 A and Fig. 3 B illustrate the intake manifold 300 according to the electric injection system of a mode of execution of the present utility model.With reference to Fig. 3 A, intake manifold 300 has petrolift 302, and it is arranged to the fuel that is received fuel also and then pressurization is provided at least one fuel injector 306 by fuel supply pipe 304 from fuel tank (not shown).In this embodiment, petrolift 302 is connected with U-shaped fuel pipe 308, and U-shaped fuel pipe 308 is connected with fuel injector 306 again.In other words, fuel flows to petrolift 302 from fuel tank, and pressurizes to be sent to fuel injector 306 by U-shaped fuel pipe 308 by petrolift.Alternatively, the upstream of petrolift and/or downstream are provided with filter.
Preferably, fuel injector 306 has electromechanical valve 310, and it is controlled by an electronic control unit the fuel so that specified quantitative to be provided to engine chamber under specific fuel pressure within the scope of special time.As shown in Figure 3 B, in the utility model, angle and the position of fuel injector 306 are optimised, with make fuel injector 306 with conical fuel injection mode by fuel 312 injection engines, and avoid making fuel to be injected into the inwall of air intake passage, thereby be injected in motor in the most direct and effective mode.
On the other hand, intake manifold 300 also comprise can be rotatably set in throttle orifice 314(the air inlet passage of air be provided to motor) throttle valve 316.The dish type valve head 320 that this throttle valve 316 has valve shaft 318 and carried by valve shaft, in the time that valve shaft 318 rotates, valve head 320 can rotate with respect to this throttle orifice 314.Preferably, throttle valve 316 is fly valve.In one embodiment, throttle valve 316 can rotate the opening size to change throttle orifice between at least two different positions, wherein in the time of primary importance, throttle valve provides the air mass flow (flow is less) of a height restriction, and throttle valve provides relatively less restriction (flow is more) to air mass flow in the time of the second place.
Preferably, throttle valve 316 and the control unit 322 with throttle valve position sensor are connected to assist to judge the load of motor.In one embodiment, throttle valve position sensor can be non-contact sensor, for example magnet and electronic sensor, and its rotational position in response to described magnet is determined the rotational position of throttle valve 316.Preferably, throttle valve position sensor is connected with the electronic control unit ECU of electric injection system.In an alternate embodiment, control unit can be directly the electronic control unit ECU of electric injection system, its alternatively with engine temperature sensing unit for determining engine speed and position, EGO2 Exhaust Gas Oxygen sensor, the sensors such as engine position sensor communicate.In one embodiment, based on these inputs, electronic control unit is control engine relay at least in part, the operation of fuel injector and the igniting of motor, thereby the petrolift of On/Off power supply, lambda sensor, and fuel injector; Flow velocity/the amount of the fuel providing from sparger is provided; Offer plug ignition signal with control.
Preferably, intake manifold 300 also has pressure regulator, and it can be integrated in petrolift 302, or is arranged in the fuel flow returns 324 that is back to fuel tank.This pressure regulator makes unnecessary fuel flow returns to fuel tank, and has limited fuel pressure and kept constant fuel pressure.In one embodiment, pressure regulator is also connected to vacuum pipeline.
Fig. 3 C illustrates the exploded view of the intake manifold of Fig. 3 A.With reference to Fig. 3 C, the intake manifold 300 of the present embodiment has: the petrolift 302 being formed by pump case 330, the pump housing 332, seal ring 334, screw 336 and pump cover 338; Fuel injector 306; U-shaped fuel pipe 308; Valve connector 356; By valve shaft 318 be arranged on the throttle valve 316 that the dish type valve head 320 on valve shaft 318 forms; For holding the valve chest 342 of throttle valve 316; Valve chest plate 344; Valve shaft support 346; Bracket 348 and the control unit 322 being formed by control unit housing 350,352 and circuit board 354.By the description with reference to above, it is clear that the operation of intake manifold will become.
Fig. 4 A illustrates the oxygen sensor 404 in cylinder head 402 that is integrated according to the electric injection system of a mode of execution of the present utility model.This oxygen sensor 404 is arranged on exhaust passageway 406, for detecting the remnant oxygen in exhaust, and for the feedback control of electric injection system.In the utility model, cylinder head 402 is designed to have one for receiving the opening 408 of oxygen sensor, to allow oxygen sensor 404 insert this opening with an angle and allow one end of oxygen sensor 404 to be inserted into exhaust passageway 406.Although do not specifically illustrate in Fig. 4 A, the other end of oxygen sensor 404 is connected with cable/datawire (not shown) to communicate by letter with described electronic control unit.In some embodiments, cylinder head 402 also comprises the layout for holding a temperature transducer.
Fig. 4 B illustrates the exploded view of the oxygen sensor 404 of Fig. 4 A.With reference to Fig. 4 A, the oxygen sensor 404 of the present embodiment has: the protective tube 410 with groove; Active transducer 412; The threaded cap 414 of tool; Seal ring 416; Connector 418; Heater 420; Sleeve 422; End cap 424 and cable/data line connector 426.It should be noted in the discussion above that the utility model not necessarily needs to use the oxygen sensor of the above-mentioned type, and can in the situation that not departing from scope of the present utility model, use the oxygen sensor of other type.
Fig. 5 A to 5C illustrates the fly wheel assembly 500 according to the electric injection system of a mode of execution of the present utility model.In the present embodiment, flywheel assembly is by bent axle, and the motion of piston etc. drives rotation, as known in the art.With reference to Fig. 5 C, fly wheel assembly 500 has flywheel body 502; Bracing strut 504; Timing gear 506; Fly frame 508 and gear ring 510, all these is arranged with one heart.Timing gear 506 has the multiple teeth around its periphery, so that flywheel turn-sensitive device for example, by measuring the position of tooth and the operation (rotating speed, torque) that rotational speed is measured fly wheel assembly.Timing gear 506 also has mounting plate 512, for timing gear is installed to fly frame 508 securely.
Fig. 6 A and 6B illustrate the ignition coil assembly 600 according to the electric injection system of a mode of execution of the present utility model.With reference to Fig. 6 B, ignition coil assembly 600 has the position transducer 604 being arranged on support 602, spark coil 606, packing ring 608; Nut 610 and bolt 612.Position transducer 604 is for detection of the position of bent axle.Preferably, this position transducer 604 is arranged near described fly wheel assembly 500, to carry out indirect monitoring crank position by the motion that detects timing gear 506, and testing result is sent to electronic control unit.In the utility model, position transducer 604 can be the sensor of optical sensor or other types.Spark coil 606 is installed on support 602 by bolt 612 and nut 610.Preferably, spark coil 606 is connected with electronic control unit, and by firing time of described electronic control unit control point fire coil 606.
Fig. 7 illustrates according to the motor of a mode of execution of the present utility model and the electric injection system in motor.With reference to figure 7, can see intake manifold 300, fly wheel assembly 500 and ignition coil assembly 600 are disposed in an example of motor.
Those skilled in the art will recognize that and can carry out as a lot of variations and/or the amendment shown at specific mode of execution the utility model, and do not depart from as broadly described spirit or scope of the present utility model.Current mode of execution therefore should be illustrative instead of restrictive for being thought of as in all respects.
In addition, unless otherwise directed, otherwise be included in prior art any mentioned not should be interpreted as and admit that information is public general knowledge herein.
Claims (8)
1. for an electronic fuel injection system for control engine, comprising:
Electronic control unit, described electronic control unit is arranged to be connected with one or more sensors that are arranged in motor, thereby and receive signals and generate fuel-air ratio and the firing time of signal with control engine from described one or more sensors;
Intake manifold, described intake manifold is arranged on the air inlet passage of motor, is input to the fuel of motor and the flow of air and flow velocity for basis from the SC sigmal control of electronic control unit;
Oxygen sensor, described oxygen sensor is arranged on the exhaust passage of motor, for detecting the remnant oxygen in exhaust, and testing result is fed back to described electronic control unit;
Fly wheel assembly, described fly wheel assembly is arranged in motor, and the crank-driven rotation of launched machine because fuel burns in motor; And
Ignition coil assembly, described ignition coil assembly is arranged on the rotating speed for detection fly wheel assembly in motor, and according to the firing time of the SC sigmal control motor from electronic control unit.
2. electronic fuel injection system as claimed in claim 1, wherein said electronic control unit comprises the closed loop control loop with feedback control loop and feedforward control loop;
Wherein, in described feedback control loop, the oxygen measurement result that described electronic control unit records based on described oxygen sensor is adjusted fuel flow rate and firing time; And
In described feedforward control loop, intake air temperature and pressure that described electronic control unit utilizes described multiple sensor to record, engine temperature, one or more flow and the timings of determining the fuel that is input to motor in engine speed and mass flow rate.
3. electronic fuel injection system as claimed in claim 2, wherein said intake manifold comprises:
Fuel tank, described fuel tank is for fuel-in-storage; And
Petrolift, described petrolift by described electronic control unit control with receive from described fuel tank fuel and and then the fuel of pressurization is provided at least one fuel injector, described at least one fuel injector injects fuel in described motor.
4. electronic fuel injection system as claimed in claim 3, the described fuel tank of wherein said intake manifold is connected by fuel supply pipe with petrolift, and described petrolift is connected by U-shaped fuel pipe with described at least one fuel injector.
5. electronic fuel injection system as claimed in claim 4, wherein said intake manifold also comprises the throttle valve of the described air inlet passage that is arranged on motor, the dish type valve head that described throttle valve has valve shaft and carried by valve shaft; Described throttle valve is controlled described electronic unit and is controlled, thereby goes forward side by side and change the opening size restriction air mass flow of described air inlet passage with rotation in described air inlet passage.
6. electronic fuel injection system as claimed in claim 2, wherein said oxygen sensor is integrated on the opening of cylinder head of described motor, and one end of described oxygen sensor is inserted into described exhaust passage to detect the remnant oxygen in exhaust.
7. electronic fuel injection system as claimed in claim 2, wherein said fly wheel assembly comprises:
Flywheel body;
Fly frame, described fly frame is arranged with one heart and is connected with flywheel body; And
Timing gear, described timing gear is installed to described fly frame, and described timing gear also comprises the multiple teeth around its periphery.
8. electronic fuel injection system as claimed in claim 7, wherein said ignition coil assembly comprises:
Position transducer, described position transducer is near described fly wheel assembly setting, wherein one or more position or rotational speed with the multiple teeth by detecting described timing gear measured the rotating speed of motor, and the engine speed detecting is sent to described electronic control unit;
Spark coil, described spark coil is connected with described electronic control unit, the firing time of spark coil described in described electronic control unit control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420186088.6U CN203879640U (en) | 2014-04-16 | 2014-04-16 | Electronic fuel-injection system for controlling engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420186088.6U CN203879640U (en) | 2014-04-16 | 2014-04-16 | Electronic fuel-injection system for controlling engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879640U true CN203879640U (en) | 2014-10-15 |
Family
ID=51680144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420186088.6U Expired - Lifetime CN203879640U (en) | 2014-04-16 | 2014-04-16 | Electronic fuel-injection system for controlling engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962108A (en) * | 2021-02-23 | 2022-08-30 | Ip传输控股公司 | Alignment system and method |
-
2014
- 2014-04-16 CN CN201420186088.6U patent/CN203879640U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962108A (en) * | 2021-02-23 | 2022-08-30 | Ip传输控股公司 | Alignment system and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |