CN104775884B - Method and apparatus for running internal combustion engine - Google Patents
Method and apparatus for running internal combustion engine Download PDFInfo
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- CN104775884B CN104775884B CN201510008471.1A CN201510008471A CN104775884B CN 104775884 B CN104775884 B CN 104775884B CN 201510008471 A CN201510008471 A CN 201510008471A CN 104775884 B CN104775884 B CN 104775884B
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- Prior art keywords
- pressure
- sound
- voice signal
- signal
- pressure sensor
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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
- Y02T10/40—Engine management systems
Abstract
The present invention relates to for run include gas exhaust piping internal combustion engine a kind of method and a kind of device, at least one pressure sensor and a sound receiver are wherein disposed in the gas exhaust piping, wherein the voice signal measured by the sound receiver is associated with the pressure signal provided by least one described pressure sensor.
Description
Technical field
The present invention relates to for run include gas exhaust piping internal combustion engine a kind of method and a kind of device, wherein described
At least one pressure sensor and a sound receiver are disposed in gas exhaust piping.
Background technique
The known miscellaneous method for running the internal combustion engine including gas exhaust piping.Active exhaust apparatus has
There is the exhaust apparatus for the sound that can actively influence internal combustion engine sending for example for improving the voice recognition of vehicle.It can be not only
It is designed as open system and is also configured as closed system.In closed control circuit, it can be offset actively by applying
Sound eliminates exhaust noise (ANC- active noise reduction (Active Noise Cancellation)) completely or all.It needs thus
Sound receiver, such as microphone, the sound receiver provide the information needed for the amplitude and phase of interference noise.For
ANC system fault-free and efficient operation as far as possible, the correct function of sound receiver are essential.Known sound receiver
Electrodiagnosis.
It is also known that for running the method that its gas exhaust piping includes the internal combustion engine of carbon black granules filter.In order to run tool
There are the internal combustion engine needs of carbon black granules filter to know directly to exist before carbon black granules filter and directly in gas exhaust piping
Pressure after carbon black granules filter.It is known thus to use such as two pressure sensors.
Summary of the invention
The method according to the invention has the feature that is disposed at least one pressure sensing in the gas exhaust piping
Device, at least one silencer, a sound issue device and a sound receiver, wherein are discharged along by gas exhaust piping
The flow direction of exhaust gas see that at least one described silencer, the sound issue device and the sound receiver is sequentially arranged in
The downstream of pressure sensor, wherein the voice signal that is measured by the sound receiver with by least one described pressure sensing
The pressure signal that device provides is associated, wherein being surveyed when the voice signal corresponds to be greater than by least one described pressure sensor
When the pressure of the pressure signal of amount, the voice signal is classified as unreasonable.Side according to the present invention as characterized above
Method is had the advantage that in contrast in the method for running the internal combustion engine including gas exhaust piping, wherein in gas exhaust piping
In be disposed at least one pressure sensor and a sound receiver, by sound receiver measurement voice signal with by extremely
The pressure signal that a few pressure sensor provides is associated.
It is advantageously improved scheme and Improving Measurements includes: using the pressure signal, to monitor the sound receiver；
Using the pressure signal, to check the reasonability of the voice signal measured by the sound receiver；In assessment sound letter
Number reasonability when consider the pressure drop as caused by least one silencer；It is described to estimate to be present in using voice signal
Pressure in gas exhaust piping；Using voice signal, to estimate that the carbon black granules filter of the gas exhaust piping is located at downstream
End on pressure.
The pressure signal is advantageously used to monitor sound receiver.Therefore, it is possible to use additional monitoring level, described
Monitoring level diagnoses in special application without using electronics automatically.
Advantageously, checking the reasonability of the voice signal by sound receiver measurement using the pressure signal.
Advantageously, the voice signal is equal to the pressure signal for being greater than and being measured by least one pressure sensor
When pressure, sound receiver is arranged in the downstream of at least one pressure sensor and the voice signal be classified as it is unreasonable.It presses
According to the present invention it is known that the pressure being present on sound receiver can be calculated by a voice signal by sound receiver measurement
Power, such as alternating pressure.For pressure sensor, this equally be can be realized.Considered in both cases for each sensor
Typical transmission characteristic from physical pressure to electrical quantity.(such as DPF pressure sensor: attach pressure -> voltage).
It is advantageously improved in scheme in one kind thus, the flat of the pressure on sound receiver is sought in certain period of time
Mean value, the period are shorter than the typical time scale of the pressure change in the exhaust of the internal combustion engine of igniting, but are longer than vibration
The time scale of the sound receiver swung.According to the present invention it is furthermore well known that when pressure sensor connects in exhaust duct positioned at sound
When receiving the upstream of device, the pressure being present on sound receiver is in the pressure being present on pressure sensor by system structure
(usual frequency and temperature the are related) relationship determined.
According to the present invention it is furthermore well known that frequency domain can be transformed by the electric signal that pressure sensor and sound receiver generate
In.It is then able to especially realize the amplitude for comparing alternating pressure in particularly advantageous narrowband region.It is furthermore possible to realize analysis
Phase difference, the phase difference equally can obtain reasonableness check according to systematic knowledge.
It is advantageously improved in scheme in one kind of the invention, does not control and be arranged in gas exhaust piping in sound receiver upstream
Sound issue device, especially loudspeaker as the reaction for being identified as unreasonable voice signal.If the sound hair
Device is a kind of sound sending device that the counteracting sound for being directed to the sound wave issued by internal combustion engine is generated using it out, then middle stopping pregnancy
Raw counteracting sound, because can not reliably carry out generating counteracting sound for unreasonable voice signal.If the sound issues device
Be it is a kind of using its so as to according to the aesthetic sense of user, such as driver influence internal combustion engine sound imaging sound issue
Device, then advantageously removing the influence to sound imaging from.For being classified as unreasonable sound receiver, not can guarantee by
The desired sound imaging of user.It can be realized and notify user or workshop as further step.
In a kind of advantageous design scheme of the invention, the signal of sound receiver is after reasonableness check with reasonable
Property grade separation, thus to mark rational degree.According to the reasonability degree can or in worst situation
Under cut through sound and issue the sound that device is realized and generate, or also to trigger in the case where not damaging rational situation seriously other dynamic
Make, the movement permission system is especially for the operation for maintaining effective sound to eliminate or effective shadow of maintenance sound imaging
It rings and creates the precondition for reliability service again.The latter is realized more particularly to calibrate automatically by system.
Advantageously, when at least one silencer of the arranged downstream of at least one pressure sensor, and work as sound
When receiver is arranged in the downstream of at least one silencer, considered when assessing the reasonability of voice signal by least one noise elimination
Pressure drop caused by device.
In a kind of particularly advantageous improvement project, the noise reduction coefficient being stored in electronic storage medium or storage are used
Characteristic curve in electronic storage medium considers the pressure drop by one or more muffler.
Advantageously, for running in the method for internal combustion engine for including gas exhaust piping, wherein being arranged in gas exhaust piping
There are at least one pressure sensor and a sound receiver, by the voice signal measured by sound receiver and by least one
The pressure signal association that a pressure sensor provides, wherein estimating the pressure being present in gas exhaust piping using voice signal.
Advantageously, if the gas exhaust piping of internal combustion engine has carbon black granules filter, wherein the sound receiver cloth
It sets in the downstream of carbon black granules filter, then voice signal is used, to estimate to be located at downstream in carbon black granules filter
End on pressure.Therefore, a pressure sensor can be saved when there being sound receiver, and the pressure sensing is set
Device is so as to according to internal combustion engine of the prior art operation with carbon black granules filter.
It is advantageously improved in scheme in one kind of the invention, if deposited between carbon black granules filter and sound receiver
There is one or more silencer, then estimating the pressure Shi Yaokao on the end in downstream in carbon black granules filter
Consider the pressure drop as caused by the silencer or these silencers.
In a kind of particularly advantageous improvement project, the noise reduction coefficient being stored in electronic storage medium or storage are used
Characteristic curve in electronic storage medium considers the pressure drop by one or more muffler.
It is also advantageous that the device for running the internal combustion engine including gas exhaust piping, wherein being disposed in gas exhaust piping
At least one pressure sensor and a sound receiver, wherein there is association medium, the association medium association is by sound
The voice signal of receiver measurement and the pressure signal provided by least one pressure sensor.
It is also advantageous that computer program and electronic storage medium, design or form the computer by compiling
Program, to implement each step of the method according to the invention, the computer program is stored in the electronic storage medium
On.
Electronic control unit including the electronic storage medium is advantageous.The electronic control unit is herein advantageously
It is electronic engine control device or electronic vehicle control device.
Detailed description of the invention
The embodiment of the present invention is elaborated below according to attached drawing.Here, attached drawing is shown:
Fig. 1 is with the signal for implementing the internal combustion engine of the device of method according to first embodiment according to the invention
Figure；
Fig. 2 is the schematic diagram of the process of method according to first embodiment according to the invention；
Fig. 3 is with the signal for implementing the internal combustion engine of the device of method according to the second embodiment according to the invention
Figure.
Specific embodiment
Fig. 1 is shown with the internal combustion engine for implementing the device of method according to first embodiment according to the invention
(10) schematic diagram.
The internal combustion engine (10) includes gas exhaust piping (12), and the gas exhaust piping directly starts simultaneously in internal combustion engine (10) below
And extend up to exhaust outlet (14).It is identified with arrow (16) from the internal combustion engine (10) and passes through the exhaust gas that exhaust duct (12) are discharged
Flow direction.
Internal combustion engine (10) is by including that the electronic control unit (20) of electronic storage medium (25) controls.For the internal combustion engine
(10) be vehicle internal combustion engine the case where, the electronic control unit (20) for example can be engine control system.
Exhaust duct (12) has carbon black granules filter (30), the first silencer (40) and the second silencer (42).By
The first pressure sensor (60) that one pressure signal is transferred to electronic control unit (20) is located at the upstream of carbon black granules filter.
The second pressure sensor (62) that second pressure signal is transferred to electronic control unit (20) is located at carbon black granules filter
(30) upstream in downstream and the first silencer (40).The first pressure sensor and second pressure sensor measure respectively to be deposited
The pressure being in gas exhaust piping.Second silencer (42) is located at the downstream of the first silencer (40).Sound issues device (50) position
In the downstream of the second silencer (42), the sound issues device more particularly to be loudspeaker and the sound issues device by electronics
Control unit (20) triggering.Sound receiver (52) is located at the downstream that sound issues device (50), and the sound receiver especially can
It is enough microphone.Electronic control unit (20) are passed to by the voice signal that sound receiver (52) obtain.
According to the prior art, run using first pressure signal and second pressure signal with carbon black granules filter
(30) internal combustion engine (10).The sound issues device (50) and sound receiver (52) more particularly to be active exhaust equipment
Component.Sound can be triggered in an appropriate manner according to the voice signal obtained with sound receiver (52) issues device (50), from
And generate it for example to the counteracting sound of the sound wave emitted by internal combustion engine.Alternatively, it also can so be triggered according to voice signal
Sound issues device (50), to influence the sound imaging of internal combustion engine (10) according to the aesthetic sense of user, such as driver.
It is checked using the second pressure signal provided by second pressure sensor (62) and is obtained by sound receiver (52)
Voice signal reasonability.The pressure present in the region of sound receiver determined as voice signal thus and with second
Pressure signal is compared.Because sound receiver (52) is located at the downstream of second pressure sensor (62), if by sound
The pressure that sound signal is derived is more than second pressure signal, then can derive unreasonable voice signal.It can estimate herein
And the pressure loss as caused by silencer (40,42) is considered when evaluating the reasonability of voice signal.
The method according to the invention is not limited to tool, and there are two the gas exhaust pipings of silencer (40,42).More specifically
Also can be not present, there are implement the method according to the invention in the case where one or more than two silencer.For answering
For the method according to the invention, carbon black granules filter (30) and first pressure sensor (60) are not equally required
's.
Fig. 2 shows the schematic diagrames of the process of method according to first embodiment according to the invention.
Method according to first embodiment according to the invention is with step 100 beginning.Sound is read in step 100 to receive
Device (52) and voice signal is generated in turn.Then it is calculated in step 110 based on the voice signal in sound receiver
(52) pressure present on.It is advantageously improved in scheme in one kind of the invention and acquires in certain period of time in sound thus
The average value of pressure on receiver (52), the period are shorter than the pressure change in the exhaust of the internal combustion engine (10) of igniting
Typical time scale, but be longer than the time scale of the sound receiver (52) of oscillation.In a kind of particularly advantageous design side
It calculates in case in alternating pressure present on sound receiver.Then implementation steps 120.
Second pressure sensor (62) are read in the step 120 and generate second pressure signal in turn.A kind of special
It calculates in advantageous embodiment in alternating pressure present on second pressure sensor.
Then compare the pressure determined by voice signal and second pressure signal in step 130.Herein first estimation by
It the pressure loss caused by silencer (40,42) and is deducted from second pressure signal.Alternatively, it is described by silencer (40,
42) pressure loss caused by can also be added to the pressure determined by voice signal.It can be by being stored in electronic storage medium
(25) pressure drop coefficient in estimates the pressure loss as caused by silencer (40,42) by characteristic curve.
If the comparison between second pressure signal and the pressure determined by voice signal obtains: being determined by voice signal
Pressure is greater than second pressure signal, then just deriving that the voice signal is unreasonable and and then implementation steps 140.
If the comparison between second pressure signal and the pressure determined by voice signal obtains: the pressure determined by voice signal is little
In second pressure signal, then implementation steps 100 again.
In a kind of particularly advantageous design scheme, the alternation pressure on sound receiver and second pressure sensor is represented
The electric signal of power is transformed into frequency domain.Then compare the width of alternating pressure in particularly advantageous narrowband region in step 130
Value.It is furthermore possible to analysis phase difference, the phase difference equally can obtain reasonableness check according to systematic knowledge.
It is taken measures in step 140 based on unreasonable voice signal is considered as.Such as sound is forbidden to issue device
(50) triggering not can guarantee the expectation that the sound with unreasonable voice signal issues device (50) because thinking based on this
Function.It is furthermore possible to user, such as driver of irrationality notice internal combustion engine (10) about voice signal, such as just
Method is that it receives malfunction notification.It can equally notify workshop.
In a kind of particularly preferred design scheme, the signal of sound receiver is in reasonableness check
(Plausibilisierung) with reasonability grade separation after, thus to mark rational degree.According to described reasonable
Property degree can perhaps cut through in the most adverse case sound issue device realize sound generate or do not damaging seriously
Also other movements are triggered in the rational situation of evil, the movement permission system is eliminated especially for the effective sound of maintenance
Operation maintains effective influence of sound imaging and creates the precondition for reliability service again.It is more particularly to pass through
The latter is realized in the automatic calibration of system.
Fig. 3 shows the internal combustion engine with the device for implementing the method according to second embodiment according to the invention
Schematic diagram.
The internal combustion engine (10) includes gas exhaust piping (12), and the gas exhaust piping directly starts simultaneously in internal combustion engine (10) below
And extend up to exhaust outlet (14).The exhaust gas for passing through exhaust duct (12) discharge from internal combustion engine (10) is identified with arrow (16)
Flow direction.
Internal combustion engine (10) is by including that the electronic control unit (20) of electronic storage medium (25) triggers.For the internal combustion engine
(10) be vehicle internal combustion engine the case where, the electronic control unit (20) for example can be engine control system.
Exhaust duct (12) has carbon black granules filter (30), the first silencer (40) and the second silencer (42).By
The first pressure sensor (60) that one pressure signal is transferred to electronic control unit (20) is located at the upstream of carbon black granules filter.
The pressure sensor measurement is present in the pressure in gas exhaust piping.Second silencer (42) is located under the first silencer (40)
Trip.Sound issues the downstream that device (50) are located at the second silencer (42), and the sound issues device more particularly to be loudspeaker, and
The sound issues device and is triggered by electronic control unit (20).Sound receiver (52) is located at the downstream that sound issues device (50),
The sound receiver is more particularly to being microphone.Electronic control is passed to by the voice signal that sound receiver (52) obtain
Unit (20).
The pressure being present on sound receiver (52) is calculated by the voice signal provided by sound receiver (52).For
This is advantageously improved in one kind of the invention and seeks the pressure on sound receiver (52) in scheme in certain period of time
Average value, the period are shorter than the typical time scale of the pressure change in the exhaust of the internal combustion engine (10) of igniting, but
It is the time scale for being longer than the sound receiver (52) of oscillation.Then estimate the pressure loss as caused by silencer (40,42).Energy
It is enough to estimate by the pressure drop coefficient being stored in electronic storage medium (25) or by characteristic curve by silencer
The pressure loss caused by (40,42).By the pressure on receiver (52) that is determined by voice signal and estimated by disappearing
The pressure loss caused by sound device (40,42) determines the pressure on the end in downstream for being present in carbon black granules filter (30)
Power.It the pressure on the end in downstream for being present in carbon black granules filter (30) and is measured by pressure sensor (60)
Pressure be used as input parameter for running internal combustion engine (10).
Claims (9)
1. the method for running the internal combustion engine including gas exhaust piping, wherein being disposed at least one pressure in the gas exhaust piping
Force snesor, at least one silencer, sound issue device and a sound receiver, wherein along passing through exhaust pipe
The flow direction of the exhaust gas of road discharge sees that at least one described silencer, the sound issue device and the sound receiver successively
Be arranged in the downstream of pressure sensor, which is characterized in that the voice signal measured by the sound receiver with by it is described at least
The pressure signal that one pressure sensor provides is associated, wherein when the voice signal correspond to be greater than by it is described at least one
When the pressure of the pressure signal of pressure sensor measurement, the voice signal is classified as unreasonable.
2. method according to claim 1, which is characterized in that use the pressure signal, received to monitor the sound
Device.
3. method as described in claim 2, which is characterized in that use the pressure signal, connect to check by the sound
Receive the reasonability of the voice signal of device measurement.
4. method according to claim 1, which is characterized in that consider when assessing the reasonability of voice signal by least one
Pressure drop caused by silencer.
5. method according to claim 1, which is characterized in that voice signal is used, to estimate to be present in the exhaust pipe
Pressure in road.
6. method as described in claim 5, which is characterized in that voice signal is used, to estimate the carbon of the gas exhaust piping
The pressure on the end in downstream of black particulate filter.
7. the device for running the internal combustion engine including gas exhaust piping, wherein being disposed at least one pressure in the gas exhaust piping
Force snesor, at least one silencer, a sound issue device and a sound receiver, and wherein, arrange along passing through
The flow direction of the exhaust gas of air pipe discharge sees that at least one described silencer, the sound issue device and the sound receiver
It is sequentially arranged in the downstream of pressure sensor, which is characterized in that there are association medium, the association medium association is by the sound
The voice signal of receiver measurement and the pressure signal provided by least one described pressure sensor, wherein when the sound is believed
When number corresponding to the pressure for being greater than the pressure signal measured by least one described pressure sensor, the voice signal is classified as
Unreasonable.
8. electronic storage medium is stored with computer program on the electronic storage medium, designs or formed by compiling
The computer program, to implement each step according to method described in any one of the claims 1-6.
9. electronic control unit comprising electronic storage medium according to claim 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014200199 | 2014-01-09 | ||
| DE102014200199.4 | 2014-01-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775884A CN104775884A (en) | 2015-07-15 |
| CN104775884B true CN104775884B (en) | 2019-11-08 |
Family
ID=53617600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510008471.1A Expired - Fee Related CN104775884B (en) | 2014-01-09 | 2015-01-08 | Method and apparatus for running internal combustion engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN104775884B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992179A (en) * | 2021-02-05 | 2021-06-18 | 安徽绿舟科技有限公司 | Recognition method for detecting faults of gas turbine based on voiceprint signals |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034820Y (en) * | 2007-04-10 | 2008-03-12 | 浙江大学鸣泉电子科技有限公司 | Gasoline vehicle extraction flow analyzer |
| EP1926543A1 (en) * | 2005-09-07 | 2008-06-04 | Robert Bosch Gmbh | Method for operating an internal combustion engine and device for implementing the method |
| CN101273257A (en) * | 2005-09-29 | 2008-09-24 | 罗斯芒特公司 | Pressure transmitter with acoustic pressure sensor |
| DE102008003085A1 (en) * | 2008-01-03 | 2009-07-09 | Robert Bosch Gmbh | Internal combustion engine for vehicle, has adjusting device diagnosed by exhaust gas sensor placed at exhaust outflow side, where exhaust gas characteristic measured by sensor is compared with modelled exhaust gas characteristic |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2530263B1 (en) * | 2011-06-01 | 2013-08-21 | Eberspächer Exhaust Technology GmbH & Co. KG | Active noise control system for exhaust systems and method for controlling the same |
-
2015
- 2015-01-08 CN CN201510008471.1A patent/CN104775884B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1926543A1 (en) * | 2005-09-07 | 2008-06-04 | Robert Bosch Gmbh | Method for operating an internal combustion engine and device for implementing the method |
| CN101257963A (en) * | 2005-09-07 | 2008-09-03 | 罗伯特·博世有限公司 | Method for operating an internal combustion engine and device for implementing the method |
| CN101257963B (en) * | 2005-09-07 | 2011-08-10 | 罗伯特·博世有限公司 | Method for operating an internal combustion engine and device for implementing the method |
| CN101273257A (en) * | 2005-09-29 | 2008-09-24 | 罗斯芒特公司 | Pressure transmitter with acoustic pressure sensor |
| CN201034820Y (en) * | 2007-04-10 | 2008-03-12 | 浙江大学鸣泉电子科技有限公司 | Gasoline vehicle extraction flow analyzer |
| DE102008003085A1 (en) * | 2008-01-03 | 2009-07-09 | Robert Bosch Gmbh | Internal combustion engine for vehicle, has adjusting device diagnosed by exhaust gas sensor placed at exhaust outflow side, where exhaust gas characteristic measured by sensor is compared with modelled exhaust gas characteristic |
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