CN101787931A - Integrated diesel engine digital electronic governor - Google Patents
Integrated diesel engine digital electronic governor Download PDFInfo
- Publication number
- CN101787931A CN101787931A CN201010131368A CN201010131368A CN101787931A CN 101787931 A CN101787931 A CN 101787931A CN 201010131368 A CN201010131368 A CN 201010131368A CN 201010131368 A CN201010131368 A CN 201010131368A CN 101787931 A CN101787931 A CN 101787931A
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- push rod
- control panel
- controlling element
- diesel engine
- final controlling
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- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 239000000523 sample Substances 0.000 claims description 23
- 230000001133 acceleration Effects 0.000 claims description 10
- 239000000446 fuel Substances 0.000 abstract description 22
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 24
- 230000009183 running Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
The invention relates to an electric motor equipment system and discloses an integrated diesel engine digital electronic governor. The digital electronic governor comprises a casing, a control panel, a tachometer wheel arranged on the main shaft of an injection pump, an electronic throttle module, an actuator body and a revolution speed transducer, wherein revolution speed transducer and the electronic throttle module are arranged on the control panel, the electronic throttle module is connected with the control panel through a throttle wire, the revolution speed transducer and the actuator body are connected with the control panel through wires, and the control panel and the actuator body are arranged on the casing to constitute a whole. The entire electronic governor system can be integrated by adopting the above structure; and the volume is smaller than that of the original mechanical governor, the speed-regulating fitness of the governor is good, the speed-regulating sensitivity is high and the inertia is small, thus the fuel oil can be completely combusted, the fuel consumption is low, the exhaust emission is little and the governor can be widely popularized and used while costing low cost.
Description
Technical field
The present invention relates to the motor apparatus system, relate in particular to integrated diesel engine digital electronic governor.
Background technique
The need of work of diesel engine is stablized by a speed regulator, be called speed regulator, the present diesel engine of generally using, its fuel feed amount is by the determining positions of injection pump plunger, the position of injection pump plunger is regulated by the control of the plunger position in Injection Pump tooth bar, speed regulator is controlled related between tooth bar by rotating speed device and plunger position, stablize the rotating speed of diesel engine and prevent driving with the pattern of " reverse feedback ", the principle of mechanical governor is to regulate rotating speed by the centrifugal force and the spring equilibrium of forces that fly to be produced when piece rotates; When spring force one timing, the centrifugal force that the rotating speed height is produced when then rotating very fast is big, promotes plunger position control tooth bar fuel delivery is reduced, thereby reduce the rotating speed of motor; It is little that rotating speed hangs down the centrifugal force that is produced when then flying the piece rotation, promote plunger position control tooth bar fuel delivery is increased, thereby the rotating speed of raising motor reaches dynamic stable; Strengthen or reduce throttle, in fact be exactly to change spring force, thereby make diesel engine be issued to the rotating speed that new balance changes motor at new rotating speed by the size that changes camber of spring.But mechanical governor still has shortcoming, be that speed governing is one-time-reach-place and has inertia, and the speed-regulating mode of this machinery need and fly block system with spring and adjusts accurately with Injection Pump and cooperate, the speed governing sensitivity decline and inertia increases when not good as cooperating, though it is very fast to occur adding, increase when subtracting throttle, slowing down, but oil inflame is incomplete, causes that oil consumption is higher, black smoke, toxic emission be serious; Simultaneously under the working condition of diesel generator, after once setting, can not change by spring force, and load needs fuel delivery to increase when increasing, having only speedup to reduce fuel delivery could increase, so the rotating speed when unloaded and full load must have bigger variation, thereby causes the instability of generator output voltage, frequency.
Summary of the invention
The speed governing that the present invention is directed to mechanical governor of the prior art is one-time-reach-place and inertia is arranged, cause cooperating speed governing sensitivity decline when not good and inertia increases, oil inflame is incomplete, oil consumption is high, toxic emission is serious problem, a kind of economic, practical integrated diesel engine digital electronic governor is provided.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
Integrated diesel engine digital electronic governor, comprise casing, also comprise control panel, be installed in fifth wheel, E-Gas module, execution body, speed probe on the Injection Pump main shaft, described speed probe and E-Gas module are installed on the control panel, described E-Gas module is connected with control panel by acceleration cable, speed probe with carry out body and be connected with control panel by lead, control panel constitutes an integral body with carrying out body to be installed on the casing.On the Injection Pump main shaft, fifth wheel is installed, speed probe and E-Gas module are installed on the control panel, control panel and final controlling element are installed on the speed regulator casing, whole electronic regulator system is formed a whole, it is little the former mechanical governor of volume ratio to occur, need not Injection Pump is made any change so can be directly installed on the position of former mechanical governor on the Injection Pump, and the throttle line position that the control of throttle only needs acceleration cable with former mechanical governor be directly connected to electronic speed regulator gets final product, and so can popularize in an all-round way at low cost and use, energy-saving and cost-reducing, improve diesel engine performance.
As preferably, described execution body is made up of stepper motor, final controlling element push rod, the connector that connects shift fork, push rod guide pin bushing, the Returnning spring of stepper motor and final controlling element push rod and be contained in final controlling element push rod one end, and Returnning spring is contained in the other end of final controlling element push rod.
As preferably, described execution body is made up of stepper motor, final controlling element tooth bar push rod, the connector that is contained in gear, push rod guide pin bushing, the Returnning spring on the stepper motor and is contained in final controlling element tooth bar push rod one end, and Returnning spring is contained in the other end of final controlling element tooth bar push rod.
As preferably, described execution body is made up of proportion electro-magnet, final controlling element push rod, the connector that is contained in gear, push rod guide pin bushing, the Returnning spring on the stepper motor and is contained in final controlling element push rod one end, and Returnning spring is contained in the other end of final controlling element push rod.
As preferably, described connector comprises connecting pin and connecting plate.Help connecting.
As preferably, described control panel is installed in the cover plate.Help protecting control panel.
As preferably, have the mounting hole that matches with structure on the motor on the described casing.Help timely installation.
According to technological scheme of the present invention, whole electronic regulator system forms a whole, the former mechanical governor of volume ratio is smaller, can popularize and use, saves energy and reduce the cost, can improve again diesel engine performance at low cost in an all-round way, has very huge economy and environment protection significance; The speed governing cooperation of isochronous governor is good, speed governing is highly sensitive, inertia is little, cause that oil inflame is complete, oil consumption is low, toxic emission is few, novel in design in addition, cost is low, easy for installation, can directly substitute mechanical governor and need not former Injection Pump, diesel engine are transformed, very easily apply.
Description of drawings
Fig. 1 is the embodiment's 1 of integrated diesel engine digital electronic governor of the present invention structural representation;
Fig. 2 is the embodiment's 2 of integrated diesel engine digital electronic governor of the present invention structural representation;
Fig. 3 is the embodiment's 3 of integrated diesel engine digital electronic governor of the present invention structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
Integrated diesel engine digital electronic governor, as shown in Figure 1, comprise casing 11, also comprise control panel 7, be installed in fifth wheel 4, E-Gas module 8, execution body 6, speed probe 5 on the Injection Pump main shaft 2, described speed probe 5 and E-Gas module 8 are installed on the control panel 7, described E-Gas module 8 is connected with control panel 7 by acceleration cable 10, speed probe 5 with carry out body 6 and be connected with control panel 7 by lead, control panel 7 constitutes an integral body with carrying out body 6 to be installed on the casing 11.Described execution body 6 is made up of stepper motor 61, final controlling element push rod 62, the connector 63 that connects shift fork 64, push rod guide pin bushing 65, the Returnning spring 66 of stepper motor 61 and final controlling element push rod 62 and be contained in final controlling element push rod 62 1 ends, Returnning spring 66 is contained in the other end of final controlling element push rod 62, and described control panel 7 is installed in the cover plate 9.
During work, E-Gas module 8 is sent the needed rotary speed instruction of driver to ECU control panel 7 under the control of acceleration cable 10, ECU control panel 7 is by speed probe 5 and be installed in the tach signal that fifth wheel 4 on the oil pump main shaft 2 obtains motor 1, calculate device in position that the plunger position control tooth bar of the push rod front end of carrying out body 6 need move according to the tachometer of rotary speed instruction (or set rated speed) and current motor 1, again by stepper motor 61 runnings, drive shift fork 64 runnings, thereby driving propulsion device push rod 62 promotes, thereby promote plunger position control tooth bar, the fuel delivery control motor of regulating fuel pump output again meets the requirements of rotating speed, working environment such as load and temperature when diesel engine, when humidity etc. change, even fuel delivery is constant, its rotating speed also will change.ECU control panel 7 reads the tach signal that has changed via speed probe 5, prediction change in rotational speed trend as calculated,, actuate actuators promotes the size of injection pump plunger positioning control tooth bar increase and decrease fuel injection quantity, detect the effect that rotating speed is adjusted then, and further adjust the size of fuel injection quantity, thereby the rotating speed of rapidly and accurately engine control being set according to the adjusted rotation speed change trend of rotating speed.
Integrated diesel engine digital electronic governor, as shown in Figure 1, comprise casing 11, also comprise control panel 7, be installed in fifth wheel 4, E-Gas module 8, execution body 6, speed probe 5 on the Injection Pump main shaft 2, described speed probe 5 and E-Gas module 8 are installed on the control panel 7, described E-Gas module 8 is connected with control panel 7 by acceleration cable 10, speed probe 5 with carry out body 6 and be connected with control panel 7 by lead, control panel 7 constitutes an integral body with carrying out body 6 to be installed on the casing 11.Described execution body 6 is made up of stepper motor 61, final controlling element tooth bar push rod 621, the connector 63 that is contained in gear 68, push rod guide pin bushing 65, the Returnning spring 66 on the stepper motor 61 and is contained in final controlling element tooth bar push rod 621 1 ends, and Returnning spring 66 is contained in the other end of final controlling element tooth bar push rod 621.
During work, E-Gas module 8 is sent the needed rotary speed instruction of driver to ECU control panel 7 under the control of acceleration cable 10, ECU control panel 7 is by speed probe 5 and be installed in the tach signal that fifth wheel 4 on the oil pump main shaft 2 obtains motor 1, calculate device in position that the plunger position control tooth bar of the push rod front end of carrying out body 6 need move according to the tachometer of rotary speed instruction (or set rated speed) and current motor 1, again by stepper motor 61 runnings, driven gear 68 runnings, thereby drive 62 runnings of propulsion device tooth bar push rod, thereby promote plunger position control tooth bar, the fuel delivery control motor of regulating fuel pump output again meets the requirements of rotating speed, working environment such as load and temperature when diesel engine, when humidity etc. change, even fuel delivery is constant, its rotating speed also will change.ECU control panel 7 reads the tach signal that has changed via speed probe 5, prediction change in rotational speed trend as calculated,, actuate actuators promotes the size of injection pump plunger positioning control tooth bar increase and decrease fuel injection quantity, detect the effect that rotating speed is adjusted then, and further adjust the size of fuel injection quantity, thereby the rotating speed of rapidly and accurately engine control being set according to the adjusted rotation speed change trend of rotating speed.
Integrated diesel engine digital electronic governor, as shown in Figure 1, comprise casing 11, also comprise control panel 7, be installed in fifth wheel 4, E-Gas module 8, execution body 6, speed probe 5 on the Injection Pump main shaft 2, described speed probe 5 and E-Gas module 8 are installed on the control panel 7, described E-Gas module 8 is connected with control panel 7 by acceleration cable 10, speed probe 5 with carry out body 6 and be connected with control panel 7 by lead, control panel 7 constitutes an integral body with carrying out body 6 to be installed on the casing 11.Described execution body 6 is made up of proportion electro-magnet 67, final controlling element push rod 62, push rod guide pin bushing 65, Returnning spring 66 and the connector 63 that is contained in final controlling element push rod 62 1 ends, and Returnning spring 65 is contained in the other end of final controlling element push rod 62.Described connector 63 comprises connecting pin and connecting plate.Described control panel 7 is installed in the cover plate 9.Have the mounting hole that matches with mounting rod on the motor 1 on the described casing 11.Final controlling element push rod 62 is installed in the centre of proportion electro-magnet 67 coils.
During work, E-Gas module 8 is sent the needed rotary speed instruction of driver to ECU control panel 7 under the control of acceleration cable 10, ECU control panel 7 is by speed probe 5 and be installed in the tach signal that fifth wheel 4 on the oil pump main shaft 2 obtains motor 1, calculate device in position that the plunger position control tooth bar of the push rod front end of carrying out body 6 need move according to the tachometer of rotary speed instruction (or set rated speed) and current motor 1, passing ratio electromagnet 67 runnings again, thereby drive 62 runnings of propulsion device push rod, promote plunger position control tooth bar, the fuel delivery control motor of regulating fuel pump output again meets the requirements of rotating speed, working environment such as load and temperature when diesel engine, when humidity etc. change, even fuel delivery is constant, its rotating speed also will change.ECU control panel 7 reads the tach signal that has changed via speed probe 5, prediction change in rotational speed trend as calculated,, actuate actuators promotes the size of injection pump plunger positioning control tooth bar increase and decrease fuel injection quantity, detect the effect that rotating speed is adjusted then, and further adjust the size of fuel injection quantity, thereby the rotating speed of rapidly and accurately engine control being set according to the adjusted rotation speed change trend of rotating speed.
In addition, the this patent integrated diesel engine digital electronic governor is installed the position that flies block mechanism fifth wheel is installed on former Injection Pump main shaft, speed probe and E-Gas module are installed on the ECU microcomputer control panel, ECU control panel and final controlling element are installed on the speed regulator casing, whole electronic regulator system forms a whole, have and the on all four mounting hole of former mechanical governor, can be directly installed on the position of former mechanical governor on the Injection Pump and need not Injection Pump is made any change, the throttle line position that the control of throttle only need be directly connected to the acceleration cable of former mechanical governor electronic speed regulator gets final product, so can popularize in an all-round way at low cost and use, energy-saving and cost-reducing, can improve diesel engine performance again, have very huge economy and environment protection significance.
Actuator of the present invention directly drives the fuel injection quantity controlling mechanism of Injection Pump, required driving force is very little, and under the approximate situation of adjusting speed accuracy and emission reduction effect, driving current reduces greatly than existing electronic speed regulator, being 0.5A only on average, is 1/10th of existing actuator driving current; The only hundreds of units of cost are significantly less than the thousands of units that have electronic speed regulator now, add that substituted former mechanical governor can also balance out some costs, so be that new machine is installed or retrofitting of used machine all has favorable applicability and Economy.
In a word, the above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (7)
1. integrated diesel engine digital electronic governor, comprise casing (11), it is characterized in that: also comprise control panel (7), be installed in the fifth wheel (4) on the Injection Pump main shaft (2), E-Gas module (8), carry out body (6), speed probe (5), described speed probe (5) and E-Gas module (8) are installed on the control panel (7), described E-Gas module (8) is connected with control panel (7) by acceleration cable (10), speed probe (5) is connected with control panel (7) by lead with execution body (6), and control panel (7) is installed in casing (11) with execution body (6) and upward constitutes an integral body.
2. integrated diesel engine digital electronic governor according to claim 1, it is characterized in that: described execution body (6) is made up of stepper motor (61), final controlling element push rod (62), the connector (63) that connects shift fork (64), push rod guide pin bushing (65), the Returnning spring (66) of stepper motor (61) and final controlling element push rod (62) and be contained in final controlling element push rod (62) one ends, and Returnning spring (66) is contained in the other end of final controlling element push rod (62).
3. integrated diesel engine digital electronic governor according to claim 1, it is characterized in that: described execution body (6) is made up of stepper motor (61), final controlling element tooth bar push rod (621), the connector (63) that is contained in gear (68), push rod guide pin bushing (65), the Returnning spring (66) on the stepper motor (61) and is contained in final controlling element tooth bar push rod (621) one ends, and Returnning spring (66) is contained in the other end of final controlling element tooth bar push rod (621).
4. integrated diesel engine digital electronic governor according to claim 1, it is characterized in that: described execution body (6) is made up of proportion electro-magnet (67), final controlling element push rod (62), push rod guide pin bushing (65), Returnning spring (66) and the connector (63) that is contained in final controlling element push rod (62) one ends, and Returnning spring (65) is contained in the other end of final controlling element push rod (62).
5. integrated diesel engine digital electronic governor according to claim 1 is characterized in that: described connector (63) comprises connecting pin and connecting plate.
6. according to any described integrated diesel engine digital electronic governor of claim 1-5, it is characterized in that: described control panel (7) is installed in the cover plate (9).
7. according to any described integrated diesel engine digital electronic governor of claim 1-5, it is characterized in that: have the mounting hole that matches with mounting rod on the motor (1) on the described casing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010131368 CN101787931B (en) | 2010-03-19 | 2010-03-19 | Integrated diesel engine digital electronic governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010131368 CN101787931B (en) | 2010-03-19 | 2010-03-19 | Integrated diesel engine digital electronic governor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101787931A true CN101787931A (en) | 2010-07-28 |
| CN101787931B CN101787931B (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010131368 Expired - Fee Related CN101787931B (en) | 2010-03-19 | 2010-03-19 | Integrated diesel engine digital electronic governor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562323A (en) * | 2012-02-22 | 2012-07-11 | 潍柴动力股份有限公司 | Engine torque limiting device and engine |
| CN103047019A (en) * | 2012-12-20 | 2013-04-17 | 中国兵器工业集团第七0研究所 | Novel electronic speed regulating mechanism for embedded diesel engine |
| CN103197089A (en) * | 2013-03-20 | 2013-07-10 | 袁立建 | Device measuring rotating speed of high-speed direct current motor |
| CN104389774A (en) * | 2014-12-16 | 2015-03-04 | 山东省水利科学研究院 | Automatic constant-pressure control device for diesel pump |
| CN104454175A (en) * | 2014-11-26 | 2015-03-25 | 江苏常工动力机械有限公司 | Speed governor lever module |
| CN105422289A (en) * | 2016-01-07 | 2016-03-23 | 江苏全昌航空动力有限公司 | Double-shifting-fork execution mechanism for electronic speed regulation of single-cylinder diesel |
| CN105913995A (en) * | 2016-05-16 | 2016-08-31 | 山东康达精密机械制造有限公司 | Proportional electromagnet structure for electronic speed regulator |
| CN110397506A (en) * | 2019-06-19 | 2019-11-01 | 盐城赛福汽车零部件有限公司 | A kind of executive device for diesel engine digital electronic governor |
| CN112031940A (en) * | 2020-07-27 | 2020-12-04 | 江西理工大学 | Integrated control speed regulator |
| CN115263567A (en) * | 2022-08-17 | 2022-11-01 | 北京雷神博峰信息技术有限责任公司 | Electronic manual-automatic integrated speed regulator |
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| CN101082308A (en) * | 2007-06-29 | 2007-12-05 | 无锡开普动力有限公司 | Electronic speed regulating device of diesel engine |
| JP2008231940A (en) * | 2007-03-16 | 2008-10-02 | Kubota Corp | Electronic governor for engine |
| CN201679566U (en) * | 2010-03-19 | 2010-12-22 | 无锡市吉通机电技术开发有限责任公司 | Integrated diesel digital electronic speed regulator |
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2010
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005105841A (en) * | 2003-09-26 | 2005-04-21 | Kubota Corp | Fuel supply device of engine |
| JP2008231940A (en) * | 2007-03-16 | 2008-10-02 | Kubota Corp | Electronic governor for engine |
| CN101082308A (en) * | 2007-06-29 | 2007-12-05 | 无锡开普动力有限公司 | Electronic speed regulating device of diesel engine |
| CN201679566U (en) * | 2010-03-19 | 2010-12-22 | 无锡市吉通机电技术开发有限责任公司 | Integrated diesel digital electronic speed regulator |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562323A (en) * | 2012-02-22 | 2012-07-11 | 潍柴动力股份有限公司 | Engine torque limiting device and engine |
| CN102562323B (en) * | 2012-02-22 | 2014-12-31 | 潍柴动力股份有限公司 | Engine torque limiting device and engine |
| CN103047019A (en) * | 2012-12-20 | 2013-04-17 | 中国兵器工业集团第七0研究所 | Novel electronic speed regulating mechanism for embedded diesel engine |
| CN103197089A (en) * | 2013-03-20 | 2013-07-10 | 袁立建 | Device measuring rotating speed of high-speed direct current motor |
| CN104454175A (en) * | 2014-11-26 | 2015-03-25 | 江苏常工动力机械有限公司 | Speed governor lever module |
| CN104389774A (en) * | 2014-12-16 | 2015-03-04 | 山东省水利科学研究院 | Automatic constant-pressure control device for diesel pump |
| CN105422289A (en) * | 2016-01-07 | 2016-03-23 | 江苏全昌航空动力有限公司 | Double-shifting-fork execution mechanism for electronic speed regulation of single-cylinder diesel |
| CN105422289B (en) * | 2016-01-07 | 2017-12-08 | 江苏全昌航空动力有限公司 | Double shift fork executing agencies for single cylinder diesel electronic speed regulation |
| CN105913995A (en) * | 2016-05-16 | 2016-08-31 | 山东康达精密机械制造有限公司 | Proportional electromagnet structure for electronic speed regulator |
| CN105913995B (en) * | 2016-05-16 | 2017-08-04 | 山东康达精密机械制造有限公司 | A kind of proportion electro-magnet structure for electron speed regulator |
| CN110397506A (en) * | 2019-06-19 | 2019-11-01 | 盐城赛福汽车零部件有限公司 | A kind of executive device for diesel engine digital electronic governor |
| CN112031940A (en) * | 2020-07-27 | 2020-12-04 | 江西理工大学 | Integrated control speed regulator |
| CN112031940B (en) * | 2020-07-27 | 2022-07-15 | 江西理工大学 | Integrated control speed regulator |
| CN115263567A (en) * | 2022-08-17 | 2022-11-01 | 北京雷神博峰信息技术有限责任公司 | Electronic manual-automatic integrated speed regulator |
| CN115263567B (en) * | 2022-08-17 | 2023-09-29 | 北京雷神博峰信息技术有限责任公司 | Electronic manual-automatic integrated speed regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101787931B (en) | 2013-10-30 |
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Owner name: YANCHENG SAIFO AUTOMOBILE PARTS CO., LTD. Free format text: FORMER OWNER: WUXI KEYTOWN MECH + ELEC. TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20150409 Free format text: FORMER OWNER: YANCHENG SAIFO AUTOMOBILE PARTS CO., LTD. Effective date: 20150409 |
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Free format text: CORRECT: ADDRESS; FROM: 241000 WUXI, JIANGSU PROVINCE TO: 224005 YANCHENG, JIANGSU PROVINCE |
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Effective date of registration: 20150409 Address after: 224005 Jiangsu province Yancheng City District Century Avenue (Entrepreneurship) in small and medium sized enterprises in Yancheng Patentee after: Yancheng Saifo Automobile Parts Co., Ltd. Address before: 241000 Jiangsu province Binhu District of Wuxi City Golden West East Gu Hong Kong No. 1 Patentee before: Wuxi Keytown Mech & Elec. Technology Development Co., Ltd. Patentee before: Yancheng Saifo Automobile Parts Co., Ltd. |
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Granted publication date: 20131030 Termination date: 20200319 |