CN214119034U - Dual-fuel change-over switch - Google Patents
Dual-fuel change-over switch Download PDFInfo
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- CN214119034U CN214119034U CN202022604127.8U CN202022604127U CN214119034U CN 214119034 U CN214119034 U CN 214119034U CN 202022604127 U CN202022604127 U CN 202022604127U CN 214119034 U CN214119034 U CN 214119034U
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- valve core
- fuel
- valve body
- cavity
- sealing ring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model relates to a fuel switch discloses double fuel change over switch, including the valve body and install the case in the valve body, the case is the integral type case, is equipped with the cavity that is used for installing the case on the valve body, and the valve body lateral wall is fixed with the first fuel connection and the second fuel connection that communicate with the cavity, and the lateral wall of case is equipped with the spread groove, and when the case rotated, the first fuel connection communicated with the second fuel connection through the spread groove; a first sealing ring and a second sealing ring are arranged between the valve body and the valve core, and the first sealing ring and the second sealing ring are respectively arranged on two sides of the connecting groove. In the prior art, no sealing structure is arranged between the valve body and the valve core, so that fuel of the first fuel joint can be easily mixed with fuel of another path, and the stability of an engine is affected. This change-over switch has add first sealing washer and second sealing washer between valve body and case, and the fuel passageway that flows into first fuel connection keeps apart with the fuel passageway of another way, guarantees the fuel purity, improves the stability of engine.
Description
Technical Field
The utility model relates to a fuel switch especially relates to dual fuel change over switch.
Background
The switching valve in the existing dual-fuel switching switch has a combined type and an independent type, and the combined type switching valve is used for arranging flow passages of two paths of fuels on one valve, such as application numbers: in the oil-gas change-over switch of the dual-fuel gasoline engine of 201010233053.X, two paths of fuels are communicated through the strip-shaped groove 13 on the plate body 11a, so that the two paths of fuels are mixed when being switched, and the stability of the engine is influenced; the independent switching valve is a combined switching switch of a dual-fuel engine, for example, application number 201720170608.8, which is used for respectively arranging flow channels of two paths of fuel on two valves, and each path of fuel is connected with the engine through a respective valve.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to shortcoming among the prior art, provide dual fuel change over switch.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the dual-fuel change-over switch comprises a valve body and a valve core arranged in the valve body, wherein the valve core is an integrated valve core, a cavity for installing the valve core is arranged on the valve body, a first fuel joint and a second fuel joint which are communicated with the cavity are fixed on the outer side wall of the valve body, a connecting groove is formed in the outer side wall of the valve core, and when the valve core rotates, the first fuel joint is communicated with the second fuel joint through the connecting groove; a first sealing ring and a second sealing ring are arranged between the valve body and the valve core, and the first sealing ring and the second sealing ring are respectively arranged on two sides of the connecting groove.
The absence of the first and second sealing rings between the valve body and the valve element in the prior art may cause the fuel flowing into the first fuel connector to mix with another fuel, thereby affecting the stability of the engine. This change over switch has add first sealing washer and second sealing washer between valve body and case to the fuel passageway that will flow into first fuel connection keeps apart totally with the fuel passageway of the other way, guarantees to burn the purity, improves the stability of engine.
Preferably, the cavity comprises a first cavity in a conical shape, the upper end of the valve core is an upper conical valve core, a first valve body annular groove for mounting a first sealing ring is formed in the side wall of the first cavity, a first valve core annular groove for mounting the first sealing ring is formed in the outer side wall of the upper conical valve core, and when the valve core is mounted in the valve body, the first valve body annular groove and the first valve core annular groove form a first annular groove for accommodating the first sealing ring.
Conical first cavity makes the case can be fast and accurate install in the valve body, and first sealing washer is installed to first annular chamber easy to assemble.
Preferably, the cavity further comprises a second cavity which is cylindrical, the lower end of the valve core is a cylindrical valve core, a second valve core annular groove for mounting a second sealing ring is formed in the outer side wall of the cylindrical valve core, and when the valve core is mounted in the valve body, the second valve core annular groove and the side wall of the second cavity form a second annular cavity for accommodating the second sealing ring. The second annular cavity is convenient for installing and installing a second sealing ring.
Preferably, a second valve body annular groove for mounting a second sealing ring is formed in the side wall of the first chamber, a lower conical valve core is arranged at the lower end of the valve core, a second valve core annular groove for mounting the second sealing ring is formed in the lower conical valve core, and when the valve core is mounted in the valve body, the second valve core annular groove and the second valve body annular groove form a second annular cavity for accommodating the second sealing ring. The second annular cavity is convenient for installing and installing a second sealing ring.
Preferably, the central axis of the first fuel joint is perpendicular to the central axis of the valve body, the central axis of the first fuel joint and the central axis of the valve body are on the same vertical plane, the central axis of the first fuel joint is parallel to the central axis of the second fuel joint, and the second fuel joint is arranged above the first fuel joint.
Preferably, the connecting groove comprises a longitudinal groove and a transverse groove communicated with the longitudinal groove, the transverse groove is an arc-shaped groove, one end part of the transverse groove extends downwards to form the longitudinal groove, when the first fuel joint is communicated with the second fuel joint, the channel of the first fuel joint is communicated with the longitudinal groove, and the channel of the second fuel joint is communicated with the transverse groove. When the first fuel joint is not communicated with the second fuel joint, one end of the first fuel joint or the second fuel joint is communicated with the connecting groove of the valve core. The existing connecting groove is improved, when the first fuel joint is not communicated with the second fuel joint, neither the first fuel joint nor the second fuel joint is communicated with the connecting groove of the valve core, and the first fuel joint and the second fuel joint are closed.
Preferably, a third fuel joint communicated with the cavity is further fixed on the outer side wall of the valve body, a fourth fuel joint communicated with the cavity is mounted at the lower end of the valve body, a second flow channel with a downward opening and communicated with the cavity is arranged at the axial line position of the valve core, a first flow channel communicated with the second flow channel is further arranged on the valve core, the other end of the first flow channel penetrates through the outer side wall of the valve core, the first flow channel and the second flow channel form a valve core flow channel, and when the valve core rotates, the third fuel joint is communicated with the fourth fuel joint through the valve core flow channel. The third fuel joint is communicated with the fourth fuel joint and is used for circulating the other path of fuel, the switching of the two paths of fuel is controlled by controlling the position of the valve core, and the two paths of fuel are not crossed when being switched, namely the other path of fuel is not mixed on the other path, so that the stability of the engine is improved.
Preferably, the valve further comprises a support, the valve body is installed at the lower end of the support, a rotary disc is installed at the upper end of the support, and the rotary disc is connected with the valve core and drives the valve core to rotate. The rotary table is convenient for people to operate, and the rotary angle of the valve core is controlled by rotating the rotary table, so that the switching of two paths of fuel is realized.
Preferably, one side of the bracket close to the rotating disc is provided with three micro switches arranged on the bracket, and the edge of one side of the rotating disc close to the bracket is provided with a touch part matched with the micro switches.
Preferably, the turntable is provided with a connecting column connected with the valve core, the bracket is provided with a sleeve matched with the connecting column, and the connecting column is arranged in the sleeve in a penetrating way.
Preferably, one side of the support close to the turntable is provided with a limiting column, a compression spring and a steel ball arranged above the compression spring are arranged in the limiting column, the steel ball moves up and down in the limiting column, the inner wall of the upper end of the limiting column is provided with a baffle ring, the diameter of a cylinder of the baffle ring is smaller than that of the cylinder of the steel ball, one side of the turntable close to the support is provided with a stroke section, a hand-feeling groove matched with the steel ball is formed in the stroke section, and the upper end of the limiting column is provided with a limiting groove matched with the thickness of the stroke section.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
the absence of the first and second sealing rings between the valve body and the valve element in the prior art may cause the fuel flowing into the first fuel connector to mix with another fuel, thereby affecting the stability of the engine. This change over switch has add first sealing washer and second sealing washer between valve body and case to the fuel passageway that will flow into first fuel connection keeps apart totally with the fuel passageway of the other way, guarantees to burn the purity, improves the stability of engine.
Drawings
Fig. 1 is a schematic view of the internal cross-sectional structure of the present invention.
Fig. 2 is a schematic view of the external view structure of the present invention.
Fig. 3 is an external structural view of the valve cartridge of fig. 1.
Fig. 4 is a schematic bottom view of the present invention.
Fig. 5 is a schematic sectional structure view of a-a in fig. 4.
Fig. 6 is a schematic structural view of the bracket and its upper part in fig. 1.
Fig. 7 is a schematic structural view of the turntable in fig. 1.
The names of the parts indicated by the numerical references in the above figures are as follows: 10-valve body, 11-valve core, 12-first sealing ring, 13-second sealing ring, 14-fourth fuel joint, 15-support, 16-rotary table, 17-microswitch, 18-steel ball, 19-baffle ring, 101-first fuel joint, 102-second fuel joint, 103-first chamber, 104-first valve body annular groove, 105-second chamber, 106-third fuel joint, 111-connecting groove, 112-first valve core annular groove, 113-second valve core annular groove, 114-second flow channel, 115-first flow channel, 151-sleeve, 152-limiting column, 153-limiting groove, 161-touch part, 162-connecting column, 163-stroke section, 164-hand feeling groove, 171-first switch, 172-second switch, 173-third microswitch, 1111-longitudinal groove, 1112-transverse groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1-7 and examples.
Example 1
The dual-fuel change-over switch comprises a valve body 10 and a valve core 11 installed in the valve body 10, wherein the valve core 11 is an integrated valve core, a cavity for installing the valve core 11 is arranged on the valve body 10, a first fuel joint 101 and a second fuel joint 102 which are communicated with the cavity are fixed on the outer side wall of the valve body 10, a connecting groove 111 is arranged on the outer side wall of the valve core 11, when the valve core 11 rotates, the first fuel joint 101 is communicated with the second fuel joint 102 through the connecting groove 111 to form a first path of fuel channel, and fuel can flow into an engine through the first fuel channel; a first sealing ring 12 and a second sealing ring 13 are arranged between the valve body 10 and the valve core 11, the first sealing ring 12 and the second sealing ring 13 are respectively arranged at two sides of the connecting groove 111, when the first path of fuel channel is communicated, the fuel on the path can not flow into the second path of fuel channel through a gap between the valve body 10 and the valve core 11, and the purity of the fuel channel without the path is ensured.
The cavity comprises a first cavity 103 which is conical, the upper end of the valve core 11 is an upper conical valve core, the upper conical valve core can be just matched with the first cavity 103, a first valve body annular groove 104 for installing a first sealing ring 12 is arranged on the side wall of the first cavity 103, the two side walls of the first valve body annular groove 104 are respectively a horizontal annular surface and a vertical annular surface, a first valve core annular groove 112 for installing the first sealing ring 12 is arranged on the outer side wall of the upper conical valve core, and when the valve core 11 is installed in the valve body 10, the first valve body annular groove 104 and the first valve core annular groove 112 form a first annular cavity for accommodating the first sealing ring 12.
The cavity further comprises a second cavity 105 which is cylindrical, the second cavity 105 is communicated with the first cavity 103 and is arranged below the first cavity, the lower end of the valve core 11 is a cylindrical valve core, a second valve core annular groove 113 used for installing a second sealing ring 13 is arranged on the outer side wall of the cylindrical valve core, and when the valve core 11 is installed in the valve body 10, a second annular cavity used for accommodating the second sealing ring 13 is formed by the second valve core annular groove 113 and the side wall of the second cavity 105.
The central axis of the first fuel joint 101 is perpendicular to the central axis of the valve body 10, the central axis of the first fuel joint 101 and the central axis of the valve body 10 are on the same vertical plane, the central axis of the first fuel joint 101 is parallel to the central axis of the second fuel joint 102, and the second fuel joint 102 is arranged above the first fuel joint 101. The connecting groove 111 includes a longitudinal groove 1111 and a transverse groove 1112 communicating with the longitudinal groove 1111, the transverse groove 1112 is an arc-shaped groove, one end of the transverse groove 1112 extends downwards to form the longitudinal groove, when the first fuel joint 101 communicates with the second fuel joint 102, the channel of the first fuel joint 101 communicates with the longitudinal groove 1111, and the channel of the second fuel joint 102 communicates with the transverse groove 1112. When the first fuel joint 101 is not communicated with the second fuel joint 102, one end of the first fuel joint 101 or the second fuel joint 102 is previously communicated with the connection groove 111 of the spool 11. Now, the connection groove 111 is modified, when the first fuel joint 101 is not communicated with the second fuel joint 102, neither the first fuel joint 101 nor the second fuel joint 102 is communicated with the connection groove 111 of the valve core 11, so that the first fuel joint 101 and the second fuel joint 102 are closed.
The outer side wall of the valve body 10 is further fixed with a third fuel joint 106 communicated with the cavity, the lower end of the valve body 10 is provided with a fourth fuel joint 14 communicated with the cavity, a second flow passage 114 with a downward opening and communicated with the cavity is arranged at the axial line position of the valve core 11, the valve core 11 is further provided with a first flow passage 115 communicated with the second flow passage 114, the other end of the first flow passage 115 penetrates through the outer side wall of the valve core 11, the first flow passage 115 and the second flow passage 114 form a valve core flow passage, when the valve core 11 rotates, the third fuel joint 106 is communicated with the fourth fuel joint 14 through a valve core flow passage and forms a second fuel passage, the second fuel flows into the engine through the second fuel passage, the first fuel passage and the second fuel passage are staggered, both are communicated through the rotation of the valve core 11, and when the valve core 11 rotates the second fuel passage, the first fuel passage is cut off; when the first fuel channel is switched, the second fuel channel is cut off, and the valve core 11 rotates 180 degrees to switch the two fuel channels, wherein the two fuel channels respectively circulate gasoline and fuel II.
The change-over switch further comprises a support 15, the valve body 10 is mounted at the lower end of the support 15, a rotary disc 16 is mounted at the upper end of the support 15, and the rotary disc 16 is connected with the valve core 11 and drives the valve core 11 to rotate. The rotary table 16 is rotated to drive the valve core 11 to rotate, so that the switching of two paths of fuel is realized, and the operation of the technology is simplified.
Three micro switches 17 mounted on the bracket 15 are arranged on one side of the bracket 15 close to the rotary disc 16, and a touch part 161 matched with the micro switches 17 is arranged on the edge of one side of the rotary disc 16 close to the bracket 15.
The rotation of the rotary table 16 respectively controls three operation commands of 'Gas', 'Stop' and 'LPG', the 'Gas' is gasoline and the 'LPG' is fuel two, the microswitch 17 is connected with the module, when the rotary table 16 is rotated, the touching part 161 on the rotary disc 16 props against the corresponding micro switch 17, the micro switch 17 transmits the corresponding operation signal to the module, the module controls the gasoline or fuel to flow into the technical product or stops the gasoline or fuel from flowing into the technical product to shut down, the micro switch 17 comprises a first micro switch 171, a second micro switch 172 and a third micro switch 173, the first micro switch 171 is arranged under the operation instruction of 'Gas', when the turntable 16 rotates to a Gas gear, namely a gasoline gear, the touch part 161 presses the first microswitch 171, the state of the carburetor is open (the carburetors at other positions are closed, gasoline cannot enter a combustion chamber of the engine), a pipeline from the gasoline to the engine is communicated, and the generator can run by using the gasoline; the second microswitch 172 is set under the "Stop" operation order, when the rotary table 16 turns to the "Stop" position, the touching part 161 presses the second microswitch 172, the second microswitch 172 has two effects, one, let the high-voltage packet earth to close the generator, the second, close the switch of the storage battery, prevent the electric quantity loss of the storage battery (if the storage battery switch is started by hand does not have this function); when the third micro switch 173 is set under the operation command of "LPG", and the rotary disc 16 rotates to the "LPG" position, the touching part 161 presses the third micro switch 173 and gives a signal to the display, which displays the fuel LPG in use.
One side of support 15 near carousel 16 is equipped with spacing post 152, be equipped with compression spring in the spacing post 152 and establish the steel ball 18 in the compression spring top, steel ball 18 reciprocates in spacing post 152, spacing post 152 upper end inner wall is equipped with fender ring 19, the cylinder diameter of fender ring 19 is less than the cylinder diameter of steel ball 18, one side that carousel 16 is close to support 15 is equipped with stroke section 163, set up the recess 164 of feeling with steel ball 18 looks adaptation on the stroke section 163, spacing groove 153 with stroke section 163 thickness looks adaptation is seted up to the upper end of spacing post 152.
Example 2
The embodiment 2 has the same characteristics as the embodiment 1, except that a connecting column 162 connected with the valve core 11 is arranged on the rotary disc 16, a sleeve 151 matched with the connecting column 162 is arranged on the bracket 15, and the connecting column 162 penetrates through the sleeve 151. The connecting column 162 is arranged in the sleeve 151 in a penetrating mode, so that the stability and the rotating precision of the connecting column 162 during rotation are improved.
Example 3
Embodiment 2 has substantially the same features as embodiment 1, except that this embodiment does not have the second chamber 105, the sidewall of the first chamber 103 is provided with a second valve body annular groove for mounting the second sealing ring 13, the lower end of the valve core 11 is a lower conical valve core, the lower conical valve core is provided with a second valve core annular groove 113 for mounting the second sealing ring 13, the two sidewalls of the second valve body annular groove 113 are respectively a horizontal annular surface and a vertical annular surface, and when the valve core 11 is mounted in the valve body 10, the second valve core annular groove 113 and the second valve body annular groove form a second annular cavity for accommodating the second sealing ring 13.
Claims (10)
1. The dual-fuel change-over switch comprises a valve body (10) and a valve core (11) installed in the valve body (10), wherein the valve core (11) is an integrated valve core, a cavity for installing the valve core (11) is formed in the valve body (10), a first fuel joint (101) and a second fuel joint (102) which are communicated with the cavity are fixed on two sides of the outer side wall of the valve body (10) respectively, a connecting groove (111) is formed in the outer side wall of the valve core (11), and when the valve core (11) rotates, the first fuel joint (101) is communicated with the second fuel joint (102) through the connecting groove (111); the method is characterized in that: a first sealing ring (12) and a second sealing ring (13) are arranged between the valve body (10) and the valve core (11), and the first sealing ring (12) and the second sealing ring (13) are respectively arranged on two sides of the connecting groove (111).
2. The dual fuel transfer switch of claim 1, wherein: the cavity comprises a first cavity (103) which is conical in shape, the upper end of the valve core (11) is an upper conical valve core, a first valve body annular groove (104) used for installing a first sealing ring (12) is formed in the side wall of the first cavity (103), a first valve core annular groove (112) used for installing the first sealing ring (12) is formed in the outer side wall of the upper conical valve core, and when the valve core (11) is installed in the valve body (10), the first valve body annular groove (104) and the first valve core annular groove (112) form a first annular cavity used for containing the first sealing ring (12).
3. The dual fuel transfer switch of claim 2, wherein: the cavity further comprises a second cavity (105) which is cylindrical in shape, the lower end of the valve core (11) is a cylindrical valve core, a second valve core annular groove (113) used for mounting a second sealing ring (13) is formed in the outer side wall of the cylindrical valve core, and when the valve core (11) is mounted in the valve body (10), the second valve core annular groove (113) and the side wall of the second cavity (105) form a second annular cavity used for containing the second sealing ring (13).
4. The dual fuel transfer switch of claim 2, wherein: the side wall of the first cavity (103) is provided with a second valve body annular groove used for installing a second sealing ring (13), the lower end part of the valve core (11) is a lower cone valve core, the lower cone valve core is provided with a second valve core annular groove (113) used for installing the second sealing ring (13), and when the valve core (11) is installed in the valve body (10), the second valve core annular groove (113) and the second valve body annular groove form a second annular cavity used for containing the second sealing ring (13).
5. The dual fuel transfer switch of claim 1, wherein: the central axis of the first fuel joint (101) is perpendicular to the central axis of the valve body (10), the central axis of the first fuel joint (101) and the central axis of the valve body (10) are on the same vertical plane, the central axis of the first fuel joint (101) is parallel to the central axis of the second fuel joint (102), and the second fuel joint (102) is arranged above the first fuel joint (101).
6. The dual fuel transfer switch of claim 1, wherein: the connecting groove (111) comprises a longitudinal groove (1111) and a transverse groove (1112) communicated with the longitudinal groove (1111), the transverse groove (1112) is an arc-shaped groove, one end of the transverse groove (1112) extends downwards to form the longitudinal groove, when the first fuel joint (101) is communicated with the second fuel joint (102), the channel of the first fuel joint (101) is communicated with the longitudinal groove (1111), and the channel of the second fuel joint (102) is communicated with the transverse groove (1112).
7. The dual fuel transfer switch of any of claims 1-6, wherein: the outer side wall of the valve body (10) is further fixedly provided with a third fuel connector (106) communicated with the cavity, the lower end portion of the valve body (10) is provided with a fourth fuel connector (14) communicated with the cavity, a second flow channel (114) with an opening facing downwards and communicated with the cavity is arranged at the axial line position of the valve core (11), the valve core (11) is further provided with a first flow channel (115) communicated with the second flow channel (114), the other end of the first flow channel (115) penetrates through the outer side wall of the valve core (11), the first flow channel (115) and the second flow channel (114) form a valve core flow channel, and when the valve core (11) rotates, the third fuel connector (106) is communicated with the fourth fuel connector (14) through the valve core flow channel.
8. The dual fuel transfer switch of claim 1, wherein: still include support (15), the lower tip at support (15) is installed in valve body (10), carousel (16) are installed to the upper end of support (15), carousel (16) are connected and drive case (11) and rotate with case (11), one side that support (15) are close to carousel (16) is equipped with three micro-gap switch (17) of installing on support (15), one side edge that is close to support (15) on carousel (16) is equipped with touch portion (161) with micro-gap switch (17) looks adaptation.
9. The dual fuel transfer switch of claim 8, wherein: a connecting column (162) connected with the valve core (11) is arranged on the turntable (16), a sleeve (151) matched with the connecting column (162) is arranged on the bracket (15), and the connecting column (162) penetrates through the sleeve (151).
10. The dual fuel transfer switch of claim 8 or 9, wherein: one side that support (15) are close to carousel (16) is equipped with spacing post (152), be equipped with compression spring in spacing post (152) and establish steel ball (18) in the compression spring top, steel ball (18) reciprocate in spacing post (152), spacing post (152) upper end inner wall is equipped with fender ring (19), the cylinder diameter of fender ring (19) is less than the cylinder diameter of steel ball (18), one side that carousel (16) are close to support (15) is equipped with stroke section (163), set up on stroke section (163) and feel recess (164) with steel ball (18) looks adaptation, spacing groove (153) with stroke section (163) thickness looks adaptation are seted up to the upper end of spacing post (152).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022604127.8U CN214119034U (en) | 2020-11-11 | 2020-11-11 | Dual-fuel change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022604127.8U CN214119034U (en) | 2020-11-11 | 2020-11-11 | Dual-fuel change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214119034U true CN214119034U (en) | 2021-09-03 |
Family
ID=77503805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022604127.8U Active CN214119034U (en) | 2020-11-11 | 2020-11-11 | Dual-fuel change-over switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214119034U (en) |
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2020
- 2020-11-11 CN CN202022604127.8U patent/CN214119034U/en active Active
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