CN107100745A - The method of noise of automobile of the reduction with double mass flywheel during flame-out - Google Patents
The method of noise of automobile of the reduction with double mass flywheel during flame-out Download PDFInfo
- Publication number
- CN107100745A CN107100745A CN201610095147.2A CN201610095147A CN107100745A CN 107100745 A CN107100745 A CN 107100745A CN 201610095147 A CN201610095147 A CN 201610095147A CN 107100745 A CN107100745 A CN 107100745A
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- China
- Prior art keywords
- engine
- mass flywheel
- double mass
- during flame
- noise
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D2041/0022—Controlling intake air for diesel engines by throttle control
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The present invention relates to a kind of method of noise of automobile of the reduction with double mass flywheel during flame-out, it is characterised in that：The aperture of restrictor is controlled during flame-out so that the rotating speed rapid decrease of engine, shorten the time by resonant frequency, reduce fluctuation of speed amount.Include the method for the vehicle of double mass flywheel and the method and the PWTN for vehicle with above-mentioned double mass flywheel of the vibration of reduction motor body present invention also offers operation.Realized by controlling engine air throttle aperture reduces the technology of gearbox gear knocking noise during flame-out, it can be realized in the case where not changing product design and manufacturing process, cost is low, it is easily achieved, and obvious technical effects, noises caused by hitting of gears can be effectively improved, noise reduction is obvious.
Description
Technical field
The application is related to the technical field of the automobile with double mass flywheel.
Background technology
Double mass flywheel（Double Mass Flywheel, abbreviation DMFW）, it is the new structure applied in automobile power-transmission system late 1980s, can more efficiently isolates the torsional oscillation of engine crankshaft, is conducive to improving the performance of automobile.One typical double mass flywheel structure generally comprises the first mass, the second mass, flexible member（Helical spring）Deng element.
An original flywheel is divided into two parts by double mass flywheel, and a part is retained on the position of original engine side, plays a part of original flywheel, the driving torque for starting and transmitting engine, and this part is referred to as the first mass（Preliminary quality）, another part is then placed on transmission system gear shift device side, the rotary inertia for improving speed changer, and this part is referred to as second mass（Secondary mass）.There is a ring-like oil pocket between two parts flywheel, spring cushion is housed in intracavitary, two parts flywheel is connected as an entirety by spring cushion.
The twisting vibration of power train is caused to reduce the lack of uniformity of engine rotation, vibration damping purpose is traditionally reached using torsional vibration damper in clutch.But on the one hand, the torsional vibration damper can not method the intrinsic frequency of whole power-transmission system is reduced to below engine idling, therefore remain covibration in whole engine operation process；On the other hand moment of torsion needs are limited and is transmitted due to being installed radius by torsional vibration damper spring, be difficult that torsional oscillation is reduced by reducing spring rate in actual design, therefore in the practical range of speeds of engine（1000-2000r/min）Between, it is difficult to bigger effectiveness in vibration suppression is obtained by reducing damper spring stiffness.
The secondary mass of double mass flywheel and the separation of speed changer and combine by one completes without the positive clutch disk of shock absorber, because clutch is without vibration damper mechanism, quality is obviously reduced.Shock absorber is assembled in double mass flywheel system, and can be slided in disk, hence it is evident that is improved synchronism and is made gear shift easy.
And quality is divided into two by double mass flywheel, the second mass therein（Secondary mass）The moment of inertia of power train can be improved on the premise of the moment of inertia of flywheel is not increased, and resonance speed is dropped to below idling speed.That is under any circumstance, there is resonance speed all beyond the range of speeds that engine is run.
Double mass flywheel can effectively reduce the torsional oscillation in the engine come of normally travel operating mode, so as to reduce gearbox beat noise, and by reduce power train mode can effectively control power train " drone " sound, so double mass flywheel is now extensively using the vehicle of passenger car, particularly supercharged engine.
However, during automobile flameout, other sound such as engine sound etc. reduces, and user, which easily discovers, abnormal sound.Because double mass flywheel intrinsic frequency is low, when flame-out, when engine speed declines process by double mass flywheel resonance region, easily cause resonance, aggravate undulate quantity, cause gearbox idler gear to tap and produce similar " clatter, clatter " discontinuous noise, a kind of illusion is caused to user, easily it is considered loose-parts, damage, image product is had undesirable effect.
From the point of view of the structure of double mass flywheel, during engine misses, the frequency that will necessarily have some rotating speed and double mass flywheel produces resonance.So as to aggravate fluctuation of speed amount, excite transmission internal idler gear to tap, produce noise.
The content of the invention
In order to solve the technical problem of double mass flywheel vibration especially severity in car engine start and shutdown; it is an object of the invention to provide one kind during automobile flameout; make rotating speed rapid decrease; run through double mass flywheel resonance zone; reduce the technology of engine speed fluctuations amount, so that the problem of effectively solving the aspect of above and other present in prior art.
There is provided a kind of method that reduction has noise of the automobile of double mass flywheel during flame-out according to the first aspect of the invention, it is characterised in that：The aperture of restrictor is controlled during flame-out so that the rotating speed rapid decrease of engine, shorten the time by resonant frequency, reduce fluctuation of speed amount.
In a preferred embodiment, while engine misses, air throttle is closed.In an additional preferred embodiment, when the rotating speed of the engine is 200rpm, the air throttle is reopened.
According to the second aspect of the invention there is provided a kind of method for the vibration for reducing motor body, the step of it performs the method for above-mentioned reduction noise.
According to the third aspect of the invention we there is provided a kind of PWTN for vehicle, including：It is connected to the crank axle of engine；By the rotating shaft of the crankshaft drives；By this turn of shaft-driven gearbox；Double mass flywheel, is connected in the rotating shaft between the engine and gearbox, it is characterised in that the aperture of restrictor is controlled during flame-out so that the rotating speed rapid decrease of engine, shortens the time by resonant frequency, reduces fluctuation of speed amount.
In a preferred embodiment, while engine misses, air throttle is closed.In an additional preferred embodiment, when the rotating speed of the engine is 200rpm, the air throttle is reopened.
There is provided a kind of method for the vehicle for operating and including double mass flywheel according to the fourth aspect of the invention, it is characterised in that, the aperture of restrictor is controlled during flame-out, so that the rotating speed rapid decrease of engine, shortens the time by resonant frequency, reduce fluctuation of speed amount.
In a preferred embodiment, while engine misses, air throttle is closed.In an additional preferred embodiment, when the rotating speed of the engine is 200rpm, the air throttle is reopened.
Brief description of the drawings
Fig. 1 is the schematic diagram of the transmission system of one embodiment of the invention；
Fig. 2 is double mass flywheel structural principle and its histogram；
Fig. 3 is the system mode vibration and speed curves figure to be not equipped with the double mass flywheel of the present invention；
Fig. 4 is system mode vibration and speed curves figure to use after the present invention.
Embodiment
Below with reference to drawings and examples, technical scheme is described in further detail.
It should be noted that, principle, feature and the advantage of a kind of automobile of reduction with double mass flywheel noise technology during flame-out of the present invention are illustrated by way of example below, but all descriptions are intended merely to illustrate, without they should be interpreted as to form the present invention any limitation.In addition, any single technical characteristic for being described by or implying in each embodiment mentioned by this paper, or shown or implicit any single technical characteristic in the drawings, still it can proceed to be combined or delete between these technical characteristics (or its equivalent), so as to obtain the more other embodiments of the invention that may do not referred to directly herein.
Referring to Fig. 1, the figure only shows the general principle of one embodiment of the invention in a schematic manner.Engine and gearbox are shown, it includes crank axle 1, air throttle 2 respectively, and produces the gear pair 3 of beat noise.
Fig. 2 is the schematic diagram of double mass flywheel.I1 is the equivalent moment of inertia of double mass flywheel first order quality side, includes the rotary inertia of Crankshaft System and its annex, the rotary inertia of the mass of double mass flywheel first；I2 is the equivalent moment of inertia of the second mass of double mass flywheel side, including the mass of double mass flywheel second, clutch assembly and transmission input shaft；K is the spring rate of double mass flywheel；C is the damped coefficient of double mass flywheel；F is the intrinsic frequency of system, and calculation formula is as follows：
Crest as shown in Figure 2, because inertia is big, first natural frequency is low, and double mass flywheel can produce resonance when less than idling speed.
Can typically the purpose that the knocking noise controlled be realized by control input and response two ways.One is the undulate quantity of rotating speed during control engine misses, reduces the energy of input；Two be that transmission system is optimized, such as optimize double mass flywheel, optimization powertrain arrangement, the measure such as be controlled to gear backlash, reduce the response of structure.But the enforcement difficulty for reducing response is larger, the power train fixed to structure is limited to stress results.
The present invention, by reducing input stimulus, reaches the purpose for reducing noise by the R＆D process of engine, changing calibrating procedure, the throttle opening during control is flame-out.Specially when engine just stops working, air throttle is closed, increases engine pump atmidometer, makes engine speed rapid decrease, shortened by the time of resonant frequency, fluctuation of speed amount reduces, undulate quantity is reduced, reduction causes knocking noise source, reduces noises caused by hitting of gears.Consider in addition from vibration angle, increase resistance is also increase damping, is also benefited for reduction system vibration.Simultaneously in rotating speed 200rpm, complete opening throttle makes waste gas effectively be discharged.
In one embodiment, as shown in Figure 3, the oscillating curve 5 according to the left side longitudinal axis is also denoted in the engine speed that the curve 4 in figure indicates for the right side longitudinal axis, figure, double mass flywheel hull vibration nearby is characterized.The engine speed is during decline, because certain vehicle double mass flywheel is the feature of multistage rigidity；There can be several resonant frequencies, corresponding in several rotating speed points, such as substantially 380rpm, 250rpm, 160rpm can cause double mass flywheel to produce resonance, cause the mutual percussion between the hollow sleeve gear of gearbox, produce noise.
As shown in figure 4, after using the present invention, it can clearly be seen that engine speed is smaller in the resonance zone fluctuation of speed, and vibrational energy reduction is a lot, so that noises caused by hitting of gears is also effectively reduced.During flame-out, engine speed fluctuations measure effective reduction, and 11rpm is reduced to from 43rpm.Vibrational energy has also reduced, and the vibrational energy of housing point is reduced to 1.1g from initial 1.8g, while sound also has improvement, has reached acceptable level.
The beneficial effects of the present invention are：Realized by controlling engine air throttle aperture reduces the technology of gearbox gear knocking noise during flame-out, it can be realized in the case where not changing product design and manufacturing process, cost is low, it is easily achieved, and obvious technical effects, noises caused by hitting of gears can be effectively improved, noise reduction substantially, therefore is especially suitable for being generalized to all kinds of automobiles equipped with double mass flywheel.
A kind of technology for automobile of reduction with the double mass flywheel noise during flame-out for being enumerated above example to elaborate the present invention, these examples are only used for the principle and embodiments thereof of the explanation present invention, rather than limitation of the present invention, without departing from the spirit and scope of the present invention, one of ordinary skill in the art can also make various modifications and improvement.Therefore, all equivalent technical schemes all should belong to scope of the invention and every claim by the present invention is limited.
Claims (10)
1. a kind of method of noise of automobile of the reduction with double mass flywheel during flame-out, it is characterised in that：The aperture of restrictor is controlled during flame-out so that the rotating speed rapid decrease of engine, shorten the time by resonant frequency, reduce fluctuation of speed amount.
2. method according to claim 1, wherein while engine misses, closing air throttle.
3. according to the method for claim 1 or 2, wherein when the rotating speed of the engine is 200rpm, reopening the air throttle.
4. a kind of method for the vibration for reducing motor body, it is characterised in that：The method that perform claim requires any one in 1-3.
5. a kind of PWTN for vehicle, including：
It is connected to the crank axle of engine；
By the rotating shaft of the crankshaft drives；
By this turn of shaft-driven gearbox；
Double mass flywheel, is connected in the rotating shaft between the engine and gearbox,
Characterized in that, controlling the aperture of restrictor during flame-out so that the rotating speed rapid decrease of engine, shorten the time by resonant frequency, reduce fluctuation of speed amount.
6. PWTN according to claim 5, wherein while engine misses, closing air throttle.
7. PWTN according to claim 5, wherein when the rotating speed of the engine is 200rpm, reopening the air throttle.
8. a kind of method for operating the vehicle for including double mass flywheel, it is characterised in that the aperture of restrictor is controlled during flame-out so that the rotating speed rapid decrease of engine, shortens the time by resonant frequency, reduce fluctuation of speed amount.
9. method according to claim 8, wherein while engine misses, closing air throttle.
10. according to the method for claim 8 or 9, when the rotating speed for being additionally included in the engine is 200rpm, reopen the air throttle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095147.2A CN107100745A (en) | 2016-02-22 | 2016-02-22 | The method of noise of automobile of the reduction with double mass flywheel during flame-out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095147.2A CN107100745A (en) | 2016-02-22 | 2016-02-22 | The method of noise of automobile of the reduction with double mass flywheel during flame-out |
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| CN107100745A true CN107100745A (en) | 2017-08-29 |
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| CN201610095147.2A Pending CN107100745A (en) | 2016-02-22 | 2016-02-22 | The method of noise of automobile of the reduction with double mass flywheel during flame-out |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630337A (en) * | 2018-11-27 | 2019-04-16 | 贵州吉利发动机有限公司 | The method and system of engine noise are reduced during a kind of motor vehicle is flame-out |
| CN110714843A (en) * | 2018-07-11 | 2020-01-21 | 北汽福田汽车股份有限公司 | Method and device for controlling vehicle engine, storage medium and vehicle |
| CN110761905A (en) * | 2019-11-29 | 2020-02-07 | 广西玉柴机器股份有限公司 | Control system and control method for reducing engine flameout process jitter through throttle control |
| CN113565955A (en) * | 2021-06-17 | 2021-10-29 | 东风汽车集团股份有限公司 | Vehicle, gearbox, and control method and control device for gearbox |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965158A (en) * | 2004-06-11 | 2007-05-16 | 丰田自动车株式会社 | Control device and control method for stopping and starting an internal combustion engine |
| CN103381833A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | A method and a system for a dual mass flywheel of a power train |
| CN103381814A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | Method and system for stopping engine |
| CN103381832A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | Method and system for reducing gear backlash noise |
| CN104929786A (en) * | 2015-05-12 | 2015-09-23 | 安徽江淮汽车股份有限公司 | Vehicle fuel cut control method and device |
-
2016
- 2016-02-22 CN CN201610095147.2A patent/CN107100745A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965158A (en) * | 2004-06-11 | 2007-05-16 | 丰田自动车株式会社 | Control device and control method for stopping and starting an internal combustion engine |
| CN103381833A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | A method and a system for a dual mass flywheel of a power train |
| CN103381814A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | Method and system for stopping engine |
| CN103381832A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | Method and system for reducing gear backlash noise |
| CN104929786A (en) * | 2015-05-12 | 2015-09-23 | 安徽江淮汽车股份有限公司 | Vehicle fuel cut control method and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714843A (en) * | 2018-07-11 | 2020-01-21 | 北汽福田汽车股份有限公司 | Method and device for controlling vehicle engine, storage medium and vehicle |
| CN109630337A (en) * | 2018-11-27 | 2019-04-16 | 贵州吉利发动机有限公司 | The method and system of engine noise are reduced during a kind of motor vehicle is flame-out |
| CN110761905A (en) * | 2019-11-29 | 2020-02-07 | 广西玉柴机器股份有限公司 | Control system and control method for reducing engine flameout process jitter through throttle control |
| CN113565955A (en) * | 2021-06-17 | 2021-10-29 | 东风汽车集团股份有限公司 | Vehicle, gearbox, and control method and control device for gearbox |
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Application publication date: 20170829 |
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