CN202228191U - Air throttle device - Google Patents
Air throttle device Download PDFInfo
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- CN202228191U CN202228191U CN2011203168167U CN201120316816U CN202228191U CN 202228191 U CN202228191 U CN 202228191U CN 2011203168167 U CN2011203168167 U CN 2011203168167U CN 201120316816 U CN201120316816 U CN 201120316816U CN 202228191 U CN202228191 U CN 202228191U
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- throttle
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Abstract
The utility model provides an air throttle device (100), which comprises an air throttle device body (18), a motor (14), a first spring (11), a second spring (12), air throttle sensors (16 and 17) and an air throttle control unit (3). The air throttle control unit (3) is formed in the way that,in the idling and halted state of an engine, the motor (14) drives the air throttle device body (18), after the opening of the air throttle device is larger than the specified value of the preset opening, the motor (14) is switched off, and diagnosis of the first spring (11) is carried out. According to the air throttle device, the reliability and safety of the air throttle device (100) can further be improved.
Description
Technical field
The utility model relates to a kind of automobile and uses damper assemblies, the particularly a kind of damper assemblies that can in idling stops, diagnosing the predeterminated position return mechanism.
Background technique
In the prior art, detect the amount of entering into of accelerator pedal, set air throttle target aperture corresponding to this detection limit through accelerator pedal sensor, known by the electronic type damper assemblies of motoring control throttle-valve body.According to this electronic type damper assemblies, control throttle-valve body and carry out the adjustment of engine output, thus improve the runnability of engine.
In addition; In order to ensure the Security of damper assemblies, implement various diagnosis, diagnostic result is judged to be under the unusual situation; Motor power is closed; Through the predeterminated position return mechanism air throttle aperture is maintained on the preset aperture that mechanicalness is set in advance, go, to improve the Security of automobile thereby keep MIN keeping out of the way.Here, keeping out of the way goes is meant at vehicle and breaks down and ECU is detected under the unusual situation, can avoid dangerous and guarantees that vehicle has MIN driveability, thereby can make near the maintenance station of automobile safety arriving etc.
In the electronic type damper assemblies, there are various motions (for example, japanese kokai publication hei 11-229943 communique, japanese kokai publication hei 11-257103 communique etc.) in the diagnostic techniques of predeterminated position return mechanism here.
In the technology of being put down in writing in the japanese kokai publication hei 11-229943 communique (patent documentation 1); Close at key under the state that (Key OFF) rear engine stops; Through the motoring throttle-valve body until the air throttle aperture become the diagnosis with the target aperture till; Stop motor power afterwards, detect the restoring force air throttle aperture that relies on spring (predeterminated position return mechanism) at the appointed time and whether can diagnose thereby carry out spring across prescribed.
In the technology of being put down in writing in the japanese kokai publication hei 11-257103 communique (patent documentation 2); Open (Key On) back and engine at key also under the state in revolution; Situation in the deceleration fuel cutoff in the vehicle driving is captured; The air throttle aperture be in preset aperture near the time and than preset aperture more near the situation of opening side under, the diagnosis of enforcement spring (predeterminated position return mechanism).
Yet, in the patent documentation 1, only can carry out throttle-valve body is back to the spring of preset aperture from a side of more closing than preset aperture diagnosis.But can not carry out throttle-valve body is back to the spring of preset aperture from a side of more opening than preset aperture diagnosis.
In the patent documentation 2,, carry out the diagnosis of spring from a side of more opening than preset aperture though put down in writing in the deceleration fuel cutoff pattern.But it is actually by motor throttle-valve body is urged near the preset aperture, and is not to be returned preset aperture by the effect of spring.Therefore, can not judge well whether spring can proper function.
But, be in the patent documentation 1,2 and mention diagnosis that in idling stops, carrying out the predeterminated position return mechanism.
Patent documentation 1: japanese kokai publication hei 11-229943 communique
Patent documentation 2: japanese kokai publication hei 11-257103 communique
The model utility content
The utility model is in view of the problems referred to above and the result of concentrated research, and its purpose is that providing a kind of can carry out the damper assemblies of the diagnosis of predeterminated position return mechanism in idle stop state.
The purpose of the utility model is to provide a kind of damper assemblies, possesses: throttle-valve body, and the sectional area of the air suction way of engine is changed, thus the suction air quantity of regulating engine; Motor drives said throttle-valve body and in said air suction way, rotates; First spring, with said throttle-valve body from opening the predeterminated position deflection of a side direction corresponding to preset aperture; Second spring, with said throttle-valve body from closing the said predeterminated position deflection of a side direction; The air throttle sensor is used to detect the air throttle aperture; And air throttle control unit; Said air throttle control unit is constituted as; Under the idle stop state of said engine; Through the said throttle-valve body of said motoring until said air throttle aperture reach exceed specified value than said preset aperture after, stop the energising of said motor, thereby carry out the diagnosis of said first spring.
Damper assemblies according to the utility model; Wherein, said air throttle control unit is constituted as, the minimum voltage of storage battery when detecting starting; Be higher than under the first threshold voltage condition at said minimum voltage, allow idling to stop and in idling stops, carrying out the diagnosis of said first spring; Be higher than second threshold voltage and be lower than under the said first threshold voltage condition at said minimum voltage, allow idling to stop but not implementing the diagnosis of said first spring of idling in stopping; Be lower than at said minimum voltage under the situation of said second threshold voltage, do not allow idling to stop.
By technique scheme, the advantage that has and the beneficial effect of the utility model are:
Under the situation that does not influence the operation that the idling arresting stop stops engine/restart, can implement to carry out the diagnosis of predeterminated position return mechanism, thereby can further improve the reliability and the Security of damper assemblies from a side of more opening than preset aperture.
Description of drawings
Fig. 1 is the structural drawing of the damper assemblies 100 of expression the utility model.
Fig. 2 is the figure of all structures that expression comprises the engine controller 1 of air throttle control unit 3.
Fig. 3 is used to explain that key closes the figure of diagnosis of action and the return spring 12 of the damper assemblies 100 after (Key OFF).
Fig. 4 is the action specification figure under the various vehicle speed condition in the deceleration fuel cutoff pattern.
Fig. 5 is the action specification figure under the low vehicle speed condition in the deceleration fuel cutoff pattern of the utility model.
Fig. 6 is the action specification figure in the high engine speed fuel cut-off pattern of the utility model.
Fig. 7 is the action specification figure in the high speed of a motor vehicle fuel cut-off pattern of the utility model.
Fig. 8 is the action specification figure of the diagnosis of the acquiescence spring 11 that stops of idling.
The explanatory drawing of battery tension change when Fig. 9 is starting.
Figure 10 be temperature variation cause starting the time battery tension change explanatory drawing.
Figure 11 is the explanatory drawing of when starting battery tension change under the storage battery deterioration state.
Figure 12 is the explanatory drawing of the threshold voltage of judgement under the storage battery deterioration state.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is explained in more detail.
Fig. 1 is the structural drawing of the damper assemblies 100 of expression the utility model.This damper assemblies 100 possesses: throttle-valve body 18, and the sectional area of the air suction way of engine is changed, thus the suction air quantity of regulating engine; Motor 14 drives throttle-valve body 18 and in air suction way, rotates; Acquiescence spring (first spring) 11, with throttle-valve body 18 from opening the predeterminated position deflection of a side direction corresponding to preset aperture; Return spring (second spring) 12, with throttle-valve body 18 from closing a side predeterminated position deflection; Air throttle sensor 16,17 is used to detect the air throttle aperture; And air throttle control unit 3.In addition, motor 24 rotates throttle-valve body 18 through transmission device 15.
Fig. 2 representes to comprise the figure of all structures of the engine controller 1 of air throttle control unit 3.The engine controller 1 that comprises this air throttle control unit 3 possesses: input I/F (A/D converter) 9, engine control calculation part 2 and air throttle control unit 3.A/D converter 9 is obtained GES and engine speed signal from speed of a motor vehicle detection unit 22 and engine winding number detection unit 23.
In the accelerator pedal portion 6, dispose accelerator pedal 24 and 2 accelerator pedal sensor 25,26.Driver's intention is represented that by the amount of entering into (the accelerator pedal amount of entering into) of accelerator pedal 24 this amount of entering into is detected by accelerator pedal sensor 25,26 as entering into angle.In order to improve the reliability of accelerated operation, accelerator pedal sensor 25,26 can be constituted as the structure of multiple type.In this mode of execution, be the structure of two heavy types as stated.Afterwards, A/D converter 9 reads the accelerator pedal amount of the entering into signal of accelerator pedal portion 6, and reads air throttle aperture testing signal from air throttle sensor 16,17.
Air throttle portion 7 comprises throttle-valve body 18, drives motor 14, transmission device 15 and the predeterminated position return mechanism 13 of these throttle-valve body 18 rotations, and disposes the air throttle sensor 16,17 of multiple type.In this mode of execution, be the structure of double type.Air throttle portion 7 and air throttle control unit 3 have constituted the damper assemblies 100 of this mode of execution.
Predeterminated position return mechanism 13 possesses and is used for from opening that side is returned the acquiescence spring 11 of predeterminated position and from closing the return spring 12 that side is returned predeterminated position.
Engine control calculation part 2 reads the testing signal of accelerator pedal sensor 25,26, and definite accelerator pedal aperture.Afterwards; According to the aperture desired value corresponding to the throttle-valve body 18 of the amount of said accelerator pedal aperture of having stored; And the target aperture (desired air throttle aperture) of setting throttle-valve body 18, and should desired air throttle aperture export air throttle control unit 3 to.
This air throttle control unit 3 possesses air throttle control calculation part 4 and motor drive circuit portion 5.Air throttle control calculation part 4 is carried out the drive controlling of motor 14, and said 2 air throttle sensors 16,17 is carried out fault diagnosis based on the signal from A/D transducer 9.Motor drive circuit portion 5 is for example supplied power via relay 19 by storage battery B.The testing signal of air throttle sensor 16,17 is read by this air throttle control calculation part 4, unusual the having or not of diagnosis air throttle sensor 16,17.Have unusually, judge that air throttle sensor 16,17 breaks down.If normal words based on the signal of air throttle sensor 16,17, are confirmed the actual aperture of air throttle.The deviation that requires aperture and actual aperture based on throttle-valve body 18; Carry out feedback control (F/B) so that require aperture and the corresponding to mode of actual aperture; Calculate the driven quantity of the motor 14 that makes throttle-valve body 18 rotations; Export this driven quantity the motor 14 of air throttle portion 7 to via motor drive circuit portion 5, thereby via motor 14, transmission device 15 opens and closes throttle-valve body 18.
In addition, in this mode of execution, through engine control calculation part 2 or air throttle control unit 3 diagnosing abnormal states, under the situation that the indication motoring stops, protective function begins action.That is, keep predeterminated position return mechanism 13 (with reference to Fig. 2) in the air throttle portion 7.When unusual, this predeterminated position return mechanism 13 remains throttle-valve body 18 the preset aperture of initial setting.Should preset aperture be set to, guarantee to keep out of the way the engine air imbibed quantity of the scope of going and can stop safely through braking.
Yet; Security in the time of need guaranteeing that owing to predeterminated position return mechanism 13 damper assemblies 100 unusually; If therefore can improve the reliability of return spring that constitutes the predeterminated position return mechanism and the diagnosis of giving tacit consent to spring, the Security that then can further improve damper assemblies 100.
An example of the diagnostic method of return spring 12 is described below.When key was closed (Key OFF), the diagnosis of return spring 12 was implemented.Fig. 3 is used to explain that key closes the figure of diagnosis of action and the return spring 12 of the damper assemblies 100 after (Key OFF).The driver closes key (Key OFF), and then fuel and igniting stop, thereby engine stops.In order to remove the purpose of negative pressure in the sucking pipe etc., irrespectively temporarily drive throttle-valve body 18 envoy's air valve openings with accelerated operation and change when engine stops towards a side of opening.Secondly, in order to learn the full cut-off point voltage of throttle-valve body 18, and control throttle-valve body 18 to full close position, and study full cut-off point voltage.In the process of implementing the study of full cut-off point voltage, motor 14 drives with the mode that throttle-valve body 18 maintains full cut-off point.After the study of full cut-off point voltage finished, the driving of motor 14 stopped, and promptly cuts off the power supply of motor 14.Behind the power-off of motor 14, through the return force of return spring 12, throttle-valve body 18 is opened and becomes the preset aperture that sets.Whether air throttle control unit 3 diagnosis predeterminated position return mechanisms 13 normally are back to preset aperture scope with throttle-valve body 18, thereby finish whole diagnostic action.
According to the difference of the air displacement of engine, generally can keep out of the way and go and be about 12deg through the preset air throttle aperture that brake can emergency with the speed of a motor vehicle of 50km/h～80km/h.In addition, under this situation, the normal judgement aperture scope of preset aperture is that 12deg ± 5deg is more appropriate.
But predeterminated position return mechanism 13 is back to the preset aperture that sets through return spring 12 with acquiescence spring 11 actings in conjunction and with throttle-valve body 18.Though confirmed to make throttle-valve body 18 return preset aperture through the return force of return spring 12 tightly,, if can further confirm to give tacit consent to the effect of returning of spring 11, just can further improve reliability.To this; The diagnosis of the predeterminated position return mechanism 13 of this mode of execution; Not only has the action of returning through return spring 12 from a side of closing when closing (Key OFF) at key; Also have and open the action of returning through acquiescence spring 11 from a side of opening in (Key ON) at key, thereby further improve Security.
But, open at key in the revolution of (Key ON) and engine, throttle-valve body 18 is set at more than the preset aperture with the operation of accelerator pedal 24 irrelevant, it is breakneck that is to say the intention of violating the driver and the rotating speed of engine is risen.Usually, the setting of preset aperture is to go keeping out of the way when being assumed to be fault, and the promptly imaginary speed of a motor vehicle is the aperture that 50km/h～80km/h sets, and violating driver's intention in the process of moving and throttle-valve body 18 is opened to this aperture is irrational after all.
On the other hand; Though open (Key ON) back and can diagnose acquiescence spring 11 in the time before starter starting engine from key; But because fail to start before diagnosis finishes so till starting, will take a long time, is considered and can not be accepted from the angle of commodity.
So, open at key in the revolution of (Key ON) and engine and stop control, and throttle-valve body 18 is forced to be urged to opportunity of the position of more opening than preset aperture throttle-valve body 18, may be thought of as in the fuel cut-off pattern.In the fuel cut-off pattern, because the burning of engine stops, the words of throttle-valve body 18 actions are not influence also.
As stated, the diagnositc decision of preset aperture is that 12deg ± 5deg is more appropriate.Therefore, as exceeding the position more than the specified value than preset aperture, selecting this specified value is to be appropriate about 10deg.
The form of fuel cut-off has varied, for example when slowing down, has fuel cut-off.It decontrols accelerator pedal under the state of the speed of a motor vehicle with a certain degree, gently reduces the situation of the speed of a motor vehicle through the engine braking.Fig. 4 representes to explain the figure of this situation.After the condition of fuel cut-off is set up, thus the power-off diagnosis predeterminated position return mechanism 13 of motor 14 during the enforcement fuel cut-off.But the purpose of this diagnosis is to confirm through acquiescence spring 11 throttle-valve body 18 is returned from the position of more opening than preset aperture.
Under this situation, the driver loosens accelerator pedal after quickening, and makes pin leave accelerator pedal 24 then for deceleration.Fig. 4 representes the variation of engine speed, accelerator pedal aperture, the speed of a motor vehicle and air throttle aperture in this a series of actions.At this moment, motor 14 at first with throttle-valve body 18 to a side drive of opening, the stage that arrives the target aperture fine repeatable operation open side and close the driving of side, thereby keep certain aperture.Afterwards, in the stage that accelerator pedal 24 loosens, motor 14 is to closing side drive, thereby reduces the air throttle aperture apace.
Afterwards, fuel cut-off set up during in, in the position of more opening, close motor 14 power supplys, thereby implement to give tacit consent to the diagnosis of spring 11 than preset aperture.That is to say, under the state of situation 1, implement the diagnosis of acquiescence spring 11 in the drawings.
But as aforesaid, the speed of a motor vehicle is the situation of 70km/h if the setting of preset aperture is supposition, even then the speed of a motor vehicle is the state condition establishment of fuel cut-off down of 40km/h, will become the state of situation 2 in the diagram.
Under the state of situation 2, what diagnosed is not to be the acquiescence spring, and makes return spring, so under this situation, there is no need to implement diagnosis.
In addition, suppose in the 100km/h running process, leave when pin under the situation of accelerator pedal 24, when the condition of fuel cut-off is set up, the speed of a motor vehicle the chances are 70km/h, it is near preset aperture.This becomes the state of situation 3 in the diagram, under this situation, even become preset aperture behind motor 14 power-offs, can not think the acquiescence spring 11 diagnostic result OK.That is to say, its be not be effect through acquiescence spring 11 be back to preset aperture near, but because the driving force of motor 14 return.
Therefore, under the state shown in Figure 4, exceed under the situation more than the specified value, just can implement to close motor 14 and diagnosis acquiescence spring 11 in the preset aperture of air throttle opening ratio.If air throttle control unit 3 detects in the scope that actual aperture becomes preset aperture ± 5deg, judge that then diagnostic result is normal.
In addition; That kind as shown in Figure 5; Exceed under the situation more than the specified value unlike preset aperture in the air throttle aperture, through motor 14 drive throttle-valve bodies 18 until the air throttle aperture reach exceed specified value than preset aperture after, close the power supply of motor 14 and implement to give tacit consent to the diagnosis of spring 11.
The explanation of in the deceleration fuel cutoff pattern acquiescence spring 11 being diagnosed more than has been described.The situation of fuel cut-off has various, and Fig. 6 is the mode of execution of under the high engine speed fuel cut-off pattern of expression acquiescence spring 11 being diagnosed.High engine speed fuel cut-off pattern is meant that the rotating speed of engine rises under the above situation of specified value the fuel cut-off that carries out from the purpose of protection engine.In this case, because the air throttle aperture is in standard-sized sheet or near standard-sized sheet, after the condition of fuel cut-off is set up, can give tacit consent to the diagnosis of spring 11 at once.After the diagnosis of acquiescence spring 11 finishes, control usually corresponding to the mode of accelerator pedal aperture with the air throttle aperture.
Mode of execution when Fig. 7 representes high speed of a motor vehicle fuel cut-off pattern.High speed of a motor vehicle fuel cut-off pattern is meant that the speed of a motor vehicle rises under the above situation of the regulation speed of a motor vehicle fuel cut-off that carries out from the purpose of protection vehicle.Under this situation, because the air throttle aperture is in standard-sized sheet or near standard-sized sheet, after the condition of fuel cut-off is set up, can give tacit consent to the diagnosis of spring 11 at once.After the diagnosis of acquiescence spring 11 finishes, control usually corresponding to the mode of accelerator pedal aperture with the air throttle aperture.
Secondly; In mixed power (HEV) car; After switching to electric drive from engine driving, through motor 14 drive throttle-valve bodies 18 until the air throttle aperture reach exceed specified value than preset aperture after, close the power supply of motor 14 and implement to give tacit consent to the diagnosis of spring 11.
As switching to power-actuated diagnosis opportunity, if wait as long for may switch back engine driving once more, thus the chance of forfeiture diagnosis.Therefore as early as possible, for example about 5 seconds after, give tacit consent to the diagnosis of spring 11.
In addition, force to drive throttle-valve body 18 and action does not have an influence to engine opportunity also may be thought of as in the idle stop state of engine.
In the automobile that possesses the idling arresting stop; Under the situation that the enforcement idling stops to control; Promptly open in the key (Key ON) and stop under the situation of engine, as shown in Figure 8, by the strong hand throttle-valve body 18 is urged to the position that exceeds prescribed (specified value) than preset aperture through motor 14; Close the power supply of motor 14 afterwards, thereby implement the diagnosis of acquiescence spring 11.
Idling arresting stop action and under the situation that the condition of automatic restart is set up, the operation of idling arresting stop and driver's key operation (Key SW) is irrelevant, thus and starter is started start engine once more.At this moment, the situation of battery overdischarge or deterioration and starter can't be started.So not only can not start automatically, and manually operate key operation (KeySW) by the driver and also can't start, cause the vehicle can not cruising.Therefore, the idling arresting stop uses Battery temperature probe, accumulator current sensor and diagnoses the state of storage battery, thereby judges whether to permit that idling stops.But, do not have in the idling arresting stop of Battery temperature probe and accumulator current sensor, just become extremely important based on the judgement of battery tension.
Battery tension when Fig. 9 representes generally to start.Usually battery tension is 12V, and key is opened (Key ON) and starter switch is also opened, and starter is started.During the starter starting, flow into big electric current in the starter, battery tension is reduced.Engine drive generator for electricity generation, thereby the voltage of storage battery is identical with the generating voltage of generator, is about 14V after successfully starting.
But the vertical drooping characteristic of storage battery is according to the difference of temperature and difference is shown in figure 10, and identical storage battery differs widely under the different environment temperature.For example, minimum voltage was about 9V when (10～40 ℃) started under the normal temperature, and minimum voltage dropped to about 6V when (20 ℃) started down during low temperature.But when low temperature, minimum voltage is about 6V during starting, also is not to be the unusual of storage battery.
On the other hand, the factor except that temperature shown in figure 11 is under the state of the state of battery overdischarge or storage battery deterioration, even identical change curve also can produce with low temperature at normal temperatures the time.Under the normal temperature state, the starting minimum voltage drops to about 6V, can judge that storage battery becomes the state of overdischarge or deterioration.
Owing under the situation of the state deteriorating of storage battery, may cause the automatic restart failure after idling stops, under this situation, not allow idling to stop.
But the state of storage battery may be in well and between worsening, for example be in the temporary transient over-discharge state.At this moment, though carry out idling stop no problem, if in idling stops the motor of driving throttle-valve body, electric power that then can battery consumption possibly caused the failure of automatic restart by this reason.
Therefore, shown in figure 12 in the utility model, detect the storage battery minimum voltage when starting, and this minimum voltage value is compared with 2 Voltage thresholds.These 2 Voltage thresholds are second Voltage threshold of permitting/disapproving that idling stops, and first Voltage threshold of permitting/disapproving the diagnosis of the predeterminated position return mechanism 13 of idling in stopping.
Second Voltage threshold is 7V for example, and minimum voltage disapproves idling and stops under the situation below second threshold value during starting, stops owing to do not carry out idling, does not also just implement the diagnosis of predeterminated position return mechanism 13 thus.
First Voltage threshold is 9V for example, and minimum voltage allows idling to stop under the situation between the first threshold and second threshold value during starting, but does not allow the diagnosis of the predeterminated position return mechanism 13 of idling in stopping.Minimum voltage is under the situation more than the first threshold during starting, allows idling to stop, and implements the diagnosis of the predeterminated position return mechanism 13 of idling in stopping.
Though more than combine accompanying drawing and embodiment that the utility model is specified, be appreciated that above-mentioned explanation does not limit the utility model in any form.Those skilled in the art can be out of shape and change the utility model as required under the situation of connotation that does not depart from the utility model and scope, and these distortion and variation all fall in the scope of the utility model.
Claims (2)
1. a damper assemblies is characterized in that,
Possess:
Throttle-valve body changes the sectional area of the air suction way of engine, thus the suction air quantity of regulating engine;
Motor drives said throttle-valve body and in said air suction way, rotates;
First spring, with said throttle-valve body from opening the predeterminated position deflection of a side direction corresponding to preset aperture;
Second spring, with said throttle-valve body from closing the said predeterminated position deflection of a side direction;
The air throttle sensor is used to detect the air throttle aperture; And
The air throttle control unit,
Said air throttle control unit is constituted as; Under the idle stop state of said engine; Through the said throttle-valve body of said motoring until said air throttle aperture reach exceed specified value than said preset aperture after; Stop the energising of said motor, thereby carry out the diagnosis of said first spring.
2. damper assemblies as claimed in claim 1 is characterized in that,
Said air throttle control unit is constituted as, and the minimum voltage of storage battery is higher than under the first threshold voltage condition at said minimum voltage when detecting starting, allows idling to stop and in idling stops, carrying out the diagnosis of said first spring; Be higher than second threshold voltage and be lower than under the said first threshold voltage condition at said minimum voltage, allow idling to stop but not implementing the diagnosis of said first spring of idling in stopping; Be lower than at said minimum voltage under the situation of said second threshold voltage, do not allow idling to stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203168167U CN202228191U (en) | 2011-08-26 | 2011-08-26 | Air throttle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203168167U CN202228191U (en) | 2011-08-26 | 2011-08-26 | Air throttle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228191U true CN202228191U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203168167U Expired - Fee Related CN202228191U (en) | 2011-08-26 | 2011-08-26 | Air throttle device |
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| Country | Link |
|---|---|
| CN (1) | CN202228191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953840A (en) * | 2011-08-26 | 2013-03-06 | 日立汽车部件（苏州）有限公司 | Air throttle device and control method thereof |
-
2011
- 2011-08-26 CN CN2011203168167U patent/CN202228191U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953840A (en) * | 2011-08-26 | 2013-03-06 | 日立汽车部件（苏州）有限公司 | Air throttle device and control method thereof |
| CN102953840B (en) * | 2011-08-26 | 2015-03-25 | 日立汽车系统(苏州）有限公司 | Control method for air throttle device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HITACHI AUTOMOTIVE SYSTEMS (SUZHOU) CO., LTD. Free format text: FORMER NAME: HITACHI AUTOMOTIVE PARTS (SUZHOU) CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Suzhou City, Jiangsu province 215126 Industrial Park Suzhou Xinglong Street No. 255 Patentee after: Hitachi Automotive Systems (Suzhou) Co., Ltd. Address before: Suzhou City, Jiangsu province 215126 Industrial Park Suzhou Xinglong Street No. 255 Patentee before: Hitachi Automobile Parts (Suzhou) Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20150826 |
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| EXPY | Termination of patent right or utility model |