CN1644912A - Fuel pump group with variable flow rate - Google Patents
Fuel pump group with variable flow rate Download PDFInfo
- Publication number
- CN1644912A CN1644912A CN200510004095.5A CN200510004095A CN1644912A CN 1644912 A CN1644912 A CN 1644912A CN 200510004095 A CN200510004095 A CN 200510004095A CN 1644912 A CN1644912 A CN 1644912A
- Authority
- CN
- China
- Prior art keywords
- pump
- mentioned
- pump group
- power unit
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
- F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10078—Connections of intake systems to the engine
- F02M35/10085—Connections of intake systems to the engine having a connecting piece, e.g. a flange, between the engine and the air intake being foreseen with a throttle valve, fuel injector, mixture ducts or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10288—Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/02—Pumps peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/14—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period
- F02M69/145—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period the valves being actuated electrically
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Feeding And Controlling Fuel (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The present invention concerns a mechanical pump group (1) for a fuel feeding system for four-stroke injection engines, mounted at the power unit (100) to carry out feeding with variable flow rate according to the revolutions of the engine.
Description
The present invention relates to a kind of petrolift group, especially relate to the petrolift group that a kind of confession is used on 4 two-stroke engines with variable flow rate with variable flow rate.
In 4 wheeled car fields, known use 4 two-stroke engines, described 4 two-stroke engines are equipped with direct or indirect ejecting system, obtain same productivity simultaneously so that reduce harmful effulent.
The direct injection system be wherein fuel in those systems that cylinder internal (otherwise directly in firing chamber) sprays with the pattern of one or more accurate alignings, and the indirect injection system to be precognition be ejected into those systems in the suction pipe in downstream, firing chamber with fuel with the pattern of abundant atomizing.
In this second type systematic, it is to be undertaken by the motor-drive pump group that is positioned at fuel tank internal that gasoline is fed into sparger.
Although it is a kind of available solution for this pump group, but the sparger that it is used for feeding two-wheeled vehicle is not best, because the expensive of motor-drive pump makes it unfavorable to the application of two-wheel vehicle, and because these pumps all need certain curretn sink in order to work, motorcycle, storage battery, those of especially low cylinder capacity can not be supplied above-mentioned electric current.
For above-mentioned reasons, obviously, have need resemble according to a kind of pump group of the present invention, described pump group makes cost and power consumption reduce to minimum.
Therefore, the objective of the invention is by providing such pump group to solve some problems of prior art, described pump group is worked under the situation that does not absorb electric power, is reliable and safety and work simultaneously.
Another object of the present invention provides a kind of pump group, and the danger of contaminating impurity can be eliminated or reduce at least to described pump group, and above-mentioned impurity can penetrate each conduit during the various conduit attended operations that form a feeding system part.
Another object of the present invention provides a kind of pump group, described pump group can allow restriction recirculation, heat gasoline and form a kind of so-called packing again, above-mentioned packing is a kind of contingent a kind of phenomenon when having high temperature under engine hood, and it is included in the pipeline of feeding system and forms steam bubble.
At last, another object of the present invention is to make a kind of pump group convenient for production and cheap.
These and other purpose is by finishing according to feeding system of the present invention, and described feeding system has the characteristics of claims 1.
Other characteristics of the present invention are emphaticallyed point out by following claim.
Basically, be a kind of mechanical pump group that is installed in the motor place according to a kind of pump group that is used for 4 stroke jet engine fuel supply systems of the present invention.
According to a favourable aspect of the present invention, the pump group is to be directly installed on the head of power unit.
Other characteristics of the present invention and advantage will become clearer from this specification that the reference accompanying drawing is done, above-mentioned specification is given for and illustrates, and hard-core purpose, wherein:
Fig. 1 is directly installed on partial sectional view on a kind of power unit head of indirect injection 4 two-stroke engines according to pump group of the present invention;
Fig. 2 is the axonometric(al) projection that illustrates according to pump group of the present invention;
Fig. 3 is a kind of local amplification view according to pump group of the present invention;
Fig. 4 be according to pump group of the present invention from the time planimetric map; And
Fig. 5 is the sectional plan view when seeing from above according to pump group of the present invention.
Referring to each accompanying drawing, show a kind ofly according to petrolift group 1 of the present invention, described petrolift group 1 is used for the fuel supply system of 4 stroke jet engines.
As what can see in Fig. 1, pump group 1 is mechanical, and according to a preferred embodiment, it is installed in power unit 100 places, especially is installed on the head 51 of power unit itself.
In addition according to the preferred embodiment shown in Fig. 1-5, pump group 1 has a packing body made from die casting (containment body) 50, a mechanical feed pump 2, a sparger 8 and a pressure regulator 6, above-mentioned sparger 8 is positioned at the inside of a relative shell 4, and above-mentioned pressure regulator 6 is positioned at the inside of relative shell 5.
In detail, packing body 50 is to utilize some screws 52 to be installed on the head 51 of power unit 100, simultaneously an adiabatic collector 10 is placed between the head 51 and packing body 50 of power unit 100.
As in Fig. 1, finding out better, pump 2 is taked to force control system 11 reciprocating from one, above-mentioned pressure control system 11 forms by an eccentric 12 with by a wishbone 13, above-mentioned eccentric 12 is installed on the camshaft of motor, and above-mentioned wishbone 13 engages with eccentric 12, will illustrate as following.
Wishbone 13 also as appreciable in each accompanying drawing, installs on the head 51 of power unit 100 by a rotary pivot of suitable clamping screw at 14 places.
In detail, wishbone 13 has an extension, and described extension leans against in axle 18 the substrate, so as to give axle 18, and the stroke of therefore giving piston 15 with respect to cylinder 16 guiding.Contact between axle 18 and the wishbone 13 guarantees as a helical spring 19 by suitable elastic device.
The lubrication of coupling guarantees that by a suitable oil circuit oil that described oil circuit will pressurize is sent in the trunnion 17 between cylinder 16 and the piston 15, and trunnion 17 forms at the lower part of cylinder 16.
As what can be more clearly visible in Fig. 3, pump 2 also is included in a conveying chamber 28 at top place, and described conveying chamber 28 is connected on the connecting duct 7 at the place, top, and on the place, bottom is connected to 15 groups in cylinder 16-piston.
Pass connecting duct 7, conveying chamber 28 is placed into sparger 8 is communicated with.
Especially, between 15 groups in cylinder 16-piston and conveying chamber 28, an automatic cylindrical shape valve 40 is installed.This valve is made by a standing part 26 and a movable part 25.
Valve 40 and especially its movable part 25 can rise under the effect of piston 15, so that fuel is flow in the conveying chamber 28 by suitable hole 33, and flow to sparger 8 from here.
The quantity in hole 33, position and configuration can wish that the delivery profile that obtains changes according to people.
During the downward stroke of piston 15, suitable elastic device such as a kind of balance spring 27 guarantee valve 40 closures.
To pump 2 fuelings by high part at cylinder 6 in formed some holes 20 obtain.These holes 20 with the chamber 21 of the pump housing 2 has a common boundary are connected on the unshowned fuel tank by conduit 22.
Suction-delivery profile the figure of pump 2 is determined in each hole 20 with respect to the location of piston 15.
As what can more be clear that in Fig. 5, conveying chamber 28 also is communicated with a pressure regulator 6 by opening 35, trunnion 30 and some suitable holes 29, and described pressure regulator is suitable for guaranteeing that fuel enters the correct pressure of sparger 8.
Said pump group 1 can be implemented the automatic change of fluctuating velocity according to the revolution of motor.
The stroke of piston, especially its speed, if under the situation that all other conditions equate, in fact directly link to each other with live axle, and therefore relevant with its revolution.Utilizing this characteristic so that have maximum fluctuating velocity under low motion speed, so that give the pressurization of described unit fast during set up procedure, and when motor is worked, obtain best fluctuating velocity value under normal running speed, in other words is lower value.Can or cannot predict a fuel recirculation loop according to pump group of the present invention, described fuel recirculation loop is made by the trunnion 23 that forms on cylinder 16, have the purpose that is recovered in the repressuring gasoline that from cylinder 16-piston 15 coupling drives, drips during the supplying step, and it is ejected in the suction chamber 21 by suitable hole 24.
Existing under the situation of recirculation, as shown in Fig. 1-5, should be noted that be used for the required amount of gasoline of recirculation must be inexcessive so that avoid overheated, described overheated causing still exists fuel rotten in the fuel tank.In this case, have one during recirculation for making gasoline return necessary fuel outlet joint 32 (Fig. 1) in the fuel tank, joint 32 becomes delegation with pressure regulator.
In an alternative embodiment, described alternative embodiment is not shown and do not equip recycling device, and outlet connection 32 does not exist, so feed unit only establishes a pipeline, is used for being fed into pump 2 from fuel tank, and does not have return branch.
In this case, the outlet of regulator 6 must be connected with chamber 21 directly or indirectly by a conduit, and above-mentioned conduit can be in the outside of pump 2 or inner.
Be used in a kind of feeding system under the situation of an indirect injection 4 two-stroke engines, packing group 50 also comprises a suction tude 3, can predict on described suction tude 3 Flexible Connector 34 that is used to connect throttling bodies is installed, and sees Fig. 1 and 2.
Although understood for example that in this manual a pump group is installed on the cluster engine head, yet should be appreciated that, the pump group also can be installed in the other zone of power unit, and also available another system that is suitable for this purposes replaces or comprise the mechanically controlled type drive system.
Can near the throttling bodies of motor, combine most of elements according to pump group of the present invention, and do not resemble 4 and take turns the similar system that automobile adopts, it has, and zero electric power absorbs and low cost, and size is little, therefore it has very low influence to the layout of automobile, and finally it does not have high pressure pipe line.
The present invention is described its preferred embodiment; be used to illustrate and hard-core purpose; but should be appreciated that; under situation about not breaking away from for this reason as the described relative protection domain of appended claims, those skilled in the art can carry out various changes and/or modification.
Claims (10)
1. be used for the pump group (1) of the fuel supply system of four-stroke jet engine, it is characterized in that: said pump group (1) is mechanical, and is installed in power unit (100) and locates, so that implement to supply with variable flow rate according to the revolution of motor.
2. according to the described pump group of claim 1 (1), it is characterized in that: it is installed on the head (51) of power unit (100).
3. according to claim 1 or 2 described pump groups (1), it is characterized in that: it comprises: a packing body (50), described packing body (50) comprises that at least one is positioned at opposite shell (4) inner sparger (8), a mechanical feed pump (2) and the connecting tube (7) between said pump (2) and sparger (8).
4. according to the described pump group of claim 3 (1), it is characterized in that: above-mentioned packing body (50) comprises the securing means (52) reversible to the head (51) of power unit (100).
5. according to claim 3 or 4 described pump groups (1), it is characterized in that: said pump (2) forces control system (11) to be driven in complex way by one.
6. according to the described pump group of claim 5 (1), it is characterized in that: above-mentioned mechanically controlled type system (11) comprises an eccentric (12), described eccentric (12) is installed on the camshaft of power unit, engage with a wishbone (13), described wishbone (13) is hinged on the head (51) of above-mentioned power unit (100).
7. according to the described pump group of claim 6 (1), it is characterized in that: said pump (2) comprises a cylinder (16) that is driven by (18)-piston (15) group, and above-mentioned axle (18) is driven by above-mentioned wishbone (13).
8. according to described pump group (1) one of among the claim 3-7, it is characterized in that: said pump (2) comprises a conveying chamber (28), described conveying chamber (28) is connected to above-mentioned connecting tube (7) and goes up and be connected on the self-acting valve (40), above-mentioned self-acting valve (40) is suitable for rising under the thrust of above-mentioned piston (15), so that make fuel flow into above-mentioned conveying chamber (28), and be used under the effect of elastic device (27), returning and put in place.
9. according to claim 8 and 7 described pump groups (1), it is characterized in that: said pump (2) also comprises at least one hole, and described hole is used for filling said pump (2), and this hole is communicated with a supplying pipe (22) from fuel tank.
10. one of require among the 3-9 described pump group (1) according to aforesaid right, it is characterized in that: above-mentioned packing body (50) comprises a link (34), and described link (34) is used for a throttling bodies.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI2004A000032 | 2004-01-14 | ||
IT000032A ITMI20040032A1 (en) | 2004-01-14 | 2004-01-14 | VARIABLE FLOW FUEL PUMP GROUP |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1644912A true CN1644912A (en) | 2005-07-27 |
CN100419250C CN100419250C (en) | 2008-09-17 |
Family
ID=34611239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2005100040955A Expired - Fee Related CN100419250C (en) | 2004-01-14 | 2005-01-14 | Fuel pump group with variable flow rate |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1555428B1 (en) |
CN (1) | CN100419250C (en) |
AT (1) | ATE459800T1 (en) |
DE (1) | DE602004025787D1 (en) |
ES (1) | ES2342383T3 (en) |
IT (1) | ITMI20040032A1 (en) |
TW (1) | TW200525083A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104571167A (en) * | 2013-10-14 | 2015-04-29 | 大陆汽车有限责任公司 | A pressure regulator |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3633136A1 (en) * | 1986-09-30 | 1988-04-07 | Daimler Benz Ag | MAGNETIC VALVE-CONTROLLED INJECTION DEVICE FOR PUMP AND NOZZLE FOR AIR COMPRESSING ENGINES |
DE4138290A1 (en) * | 1991-11-21 | 1993-05-27 | Kloeckner Humboldt Deutz Ag | INTERNAL COMBUSTION ENGINE |
FR2726606B1 (en) * | 1994-11-07 | 1996-12-06 | Chatelain Michel Francois Cons | PISTON PUMP |
DE19600561C1 (en) * | 1996-01-09 | 1997-08-21 | Daimler Benz Ag | Plug-in pump for an internal combustion engine |
-
2004
- 2004-01-14 IT IT000032A patent/ITMI20040032A1/en unknown
- 2004-12-31 EP EP04078579A patent/EP1555428B1/en not_active Not-in-force
- 2004-12-31 AT AT04078579T patent/ATE459800T1/en active
- 2004-12-31 ES ES04078579T patent/ES2342383T3/en active Active
- 2004-12-31 DE DE602004025787T patent/DE602004025787D1/en active Active
-
2005
- 2005-01-06 TW TW094100314A patent/TW200525083A/en unknown
- 2005-01-14 CN CNB2005100040955A patent/CN100419250C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104571167A (en) * | 2013-10-14 | 2015-04-29 | 大陆汽车有限责任公司 | A pressure regulator |
CN104571167B (en) * | 2013-10-14 | 2019-01-22 | 大陆汽车有限责任公司 | pressure regulator |
Also Published As
Publication number | Publication date |
---|---|
EP1555428A3 (en) | 2007-06-06 |
ATE459800T1 (en) | 2010-03-15 |
CN100419250C (en) | 2008-09-17 |
DE602004025787D1 (en) | 2010-04-15 |
ITMI20040032A1 (en) | 2004-04-14 |
TW200525083A (en) | 2005-08-01 |
EP1555428A2 (en) | 2005-07-20 |
EP1555428B1 (en) | 2010-03-03 |
ES2342383T3 (en) | 2010-07-06 |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20110114 |