WO2001044772A1 - Schwingungsaufnehmer mit einer druckhülse - Google Patents
Schwingungsaufnehmer mit einer druckhülse Download PDFInfo
- Publication number
- WO2001044772A1 WO2001044772A1 PCT/DE2000/004471 DE0004471W WO0144772A1 WO 2001044772 A1 WO2001044772 A1 WO 2001044772A1 DE 0004471 W DE0004471 W DE 0004471W WO 0144772 A1 WO0144772 A1 WO 0144772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seismic mass
- pressure sleeve
- sensor arrangement
- vibration sensor
- axial
- Prior art date
Links
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000036316 preload Effects 0.000 claims description 2
- 238000007765 extrusion coating Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
- G01P15/0907—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up of the compression mode type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
- G01P15/0915—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up of the shear mode type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02827—Elastic parameters, strength or force
Definitions
- the invention relates to a vibration sensor with a pressure sleeve according to the preamble of the main claim.
- the vibrations to be detected are knocking noises of the internal combustion engine in operation, which are transmitted via the pressure sleeve onto a piezoceramic disk as the actual sensor element with contact disks in between Insulating washers that enable the signal to be tapped are routed and thus generate an evaluable electrical output signal.
- the above-mentioned vibration sensor with a pressure sleeve in which the pressure sleeve with an initially concave base surface can be attached under pressure to a component causing vibrations, is advantageously further developed according to the invention in that the seismic mass is provided with an internal thread. can be seen and can be screwed onto the sensor arrangement in order to generate the axial preload.
- the construction of a knock sensor on the engine block of an internal combustion engine can be carried out inexpensively, since fewer individual parts are required and, in particular, a lower axial height and a lower weight of the vibration sensor can be realized. Furthermore, the elimination of the disc spring in the known arrangement also enables a more constant characteristic curve when the sensor signal is detected.
- the seismic mass according to the invention can have at least two radially extending, opposing grooves. Since through these grooves the plastic can get an interior space between the sensor arrangement and the pressure sleeve during the encapsulation m and thereby fasten it, a compact arrangement can be built up in which the installation position, for example on the engine block, is arbitrary.
- the sensor arrangement has at least two radially extending, opposing grooves through which the plastic can get into the interior between the sensor arrangement and the pressure sleeve during the encapsulation.
- the grooves can be used in both embodiments preferably be attached to both axial boundary surfaces of the seismic mass or the piezoceramic disk of the sensor arrangement. They are advantageously offset by 90 ° between one and the other surface.
- a particularly good effect when clamping the sensor element with the seismic mass is achieved if one or both axial boundary surfaces of the seismic mass are designed in such a concave manner that the axial wall thickness of the seismic mass becomes smaller towards the center.
- a vibration pickup in which a base surface of the pressure sleeve has a radially inward concave contour in front of the assembly on a component in a manner known per se can advantageously also be designed such that the contact surface for the sensor element in front of the pressure sleeve assembly has a radially inward convex contour.
- This contour is dimensioned such that, after assembly, at least the sensor arrangement lies largely flat on the support surface.
- Figure 1 shows a section through a knock sensor housing as a vibration sensor with a pressure sleeve and a screw-on seismic mass with grooves;
- FIG. 2 shows a detail section of the seismic mass according to FIG. 1;
- FIG. 3 shows a section through a knock sensor housing as a vibration sensor with a pressure sleeve and a screw-on seismic mass and with a sensor arrangement with grooves;
- FIG. 4 shows a detail section of the seismic mass according to Figures 3 and
- Figure 5 is a plan view of the sensor arrangement of Figure 3 with the grooves.
- a knock sensor for an internal combustion engine with an outer plastic housing 1 is shown as a vibration sensor, in which a pressure sleeve 2 is arranged.
- the pressure sleeve 2 has a flange-like edge 3 in the region of its lower end, via which it has its lower base surface 4 the engine block, not shown here, whose vibrations are to be detected, rests.
- the following parts are arranged on the outer circumference of the pressure sleeve 2, starting from a lower contact surface on the flange-like edge 3: an insulating disk 5, a first contact disk 6, a piezoceramic disk 7 as the actual sensor element and, in turn, a second contact disk 6 and a second insulating disk 5.
- a seismic mass 8 is placed on this arrangement, which is provided with an internal thread 9 and can be screwed onto the pressure sleeve 2 in the direction of the piezoceramic disk 7
- the entire torque exerted by the fastening screw described above is transmitted to the pressure sleeve 2 via the lower surface 4, ie to the piezoceramic Disk 7 as a sensor element does not have any force due to the attachment.
- a biasing force is generated here by the pressure of the screwed-on seismic mass 8.
- the pre-tensioning force is selected so that on the piezoceramic disk 7 just bearable axial forces are effective without permanent deterioration of the electrical signal and this is largely independent of thermal expansion and inevitable compression of the pressure sleeve 2 during assembly.
- the impulses exerted by the seismic mass 8 in proportion to the vibrations of the internal combustion engine are converted in the piezoceramic disk 7 into charge impulses which can be evaluated on a corresponding device.
- the seismic mass 8 has grooves 14 and 15 in the lower region, which are also clearly evident from the detailed illustration of the seismic mass 8 according to FIG. It can also be seen from FIG. 2 that, in addition to the grooves 14 and 15 lying radially opposite on one axial side of the seismic mass 8, there are also grooves 16 offset by 90 ° on the other axial side. These grooves 14, 15 and 16 allow the plastic to form the housing 1 during the overmolding into an interior 17 between the piezoceramic disk 7 and the pressure sleeve 2.
- the seismic mass 8 is formed without grooves.
- the sensor arrangement or the piezoceramic disk 7 has grooves 18, 19 and 20, 21, which from the three views of the piezoceramic Disk 7 are shown in FIG 5. From FIG. 5, metallized surfaces 22 can also be seen, which serve for the electrical contacting of the piezoceramic disc 7 on the two axially opposite surfaces by means of the contact discs 6.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measuring Fluid Pressure (AREA)
- Testing Of Engines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001545815A JP4664560B2 (ja) | 1999-12-15 | 2000-12-14 | 圧力スリーブを備えた振動ピックアップ |
US10/149,845 US6786078B2 (en) | 1999-12-15 | 2000-12-14 | Vibration pickup comprising a clamping sleeve |
EP00990538A EP1240490A1 (de) | 1999-12-15 | 2000-12-14 | Schwingungsaufnehmer mit einer druckhülse |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19960328A DE19960328B4 (de) | 1999-12-15 | 1999-12-15 | Schwingungsaufnehmer mit einer Druckhülse |
DE19960328.6 | 1999-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001044772A1 true WO2001044772A1 (de) | 2001-06-21 |
Family
ID=7932652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/004471 WO2001044772A1 (de) | 1999-12-15 | 2000-12-14 | Schwingungsaufnehmer mit einer druckhülse |
Country Status (6)
Country | Link |
---|---|
US (1) | US6786078B2 (de) |
EP (1) | EP1240490A1 (de) |
JP (1) | JP4664560B2 (de) |
KR (1) | KR100744962B1 (de) |
DE (1) | DE19960328B4 (de) |
WO (1) | WO2001044772A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100451590C (zh) * | 2005-11-22 | 2009-01-14 | 三菱电机株式会社 | 爆震传感器 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4222196B2 (ja) * | 2003-12-01 | 2009-02-12 | 株式会社デンソー | 電気回路機器の破壊防止構造 |
JP2005227265A (ja) * | 2004-01-15 | 2005-08-25 | Ngk Spark Plug Co Ltd | ノッキングセンサ |
JP4138696B2 (ja) * | 2004-04-20 | 2008-08-27 | 三菱電機株式会社 | ノックセンサ |
US7637807B2 (en) * | 2004-04-29 | 2009-12-29 | Cfph, L.L.C. | System and method for mapping results from sporting events to game inputs |
JP4053514B2 (ja) * | 2004-05-26 | 2008-02-27 | 三菱電機株式会社 | 内燃機関のノッキングセンサおよびその製造方法 |
DE102004034290A1 (de) * | 2004-07-15 | 2007-01-11 | Siemens Ag | Sensor für Kraftfahrzeuge |
JP3983755B2 (ja) | 2004-09-30 | 2007-09-26 | 三菱電機株式会社 | ノックセンサ |
CN101820956B (zh) * | 2007-10-11 | 2011-12-14 | 郑然玉 | 多用途体育设备 |
JP4447030B2 (ja) * | 2007-10-24 | 2010-04-07 | 三菱電機株式会社 | ノックセンサ |
JP2010101696A (ja) * | 2008-10-22 | 2010-05-06 | Ngk Spark Plug Co Ltd | ノッキングセンサ |
DE202010007655U1 (de) * | 2010-06-07 | 2011-09-08 | Ulrich Seuthe | Vorrichtung zur Überwachung und Optimierung von Spritzgießprozessen |
JP2013007612A (ja) * | 2011-06-23 | 2013-01-10 | Ngk Spark Plug Co Ltd | 非共振型ノッキングセンサ |
WO2014097737A1 (ja) * | 2012-12-19 | 2014-06-26 | 日本特殊陶業株式会社 | 非共振型ノッキングセンサ |
CN113062875B (zh) * | 2021-04-27 | 2022-12-09 | 浙江逻森风机有限公司 | 一种防止晃动撞击的离心风机 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5744698A (en) * | 1994-02-01 | 1998-04-28 | Siemens Automotive, S.A. | Accelerometric sensor for measuring the piston knock of an internal combustion engine |
DE19727703A1 (de) * | 1997-06-30 | 1999-01-14 | Bosch Gmbh Robert | Schwingungsaufnehmer mit Druckhülse |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4964294A (en) * | 1988-09-12 | 1990-10-23 | Ngk Spark Plug Co., Ltd. | Non-resonating type knock sensor |
DE4011910A1 (de) * | 1990-04-12 | 1991-10-17 | Busch Dieter & Co Prueftech | Vorrichtung und verfahren zur beschleunigungsmessung durch piezo-elektrische umformer |
FR2703772B1 (fr) * | 1993-04-10 | 1995-05-19 | Bosch Gmbh Robert | Douille de pression, notamment pour un capteur de cognement. |
DE4403660B4 (de) | 1993-04-10 | 2006-08-10 | Robert Bosch Gmbh | Druckhülse |
CZ194096A3 (cs) * | 1995-07-03 | 1998-09-16 | Robert Bosch Gmbh | Snímač kmitání s přítlačným pouzdrem |
DE19612540B4 (de) * | 1995-07-03 | 2004-04-22 | Robert Bosch Gmbh | Schwingungsaufnehmer mit Druckhülse |
DE19524147C2 (de) | 1995-07-03 | 1998-01-29 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
JP3516577B2 (ja) * | 1996-11-21 | 2004-04-05 | 日本特殊陶業株式会社 | ノッキング検出センサ |
DE19829409C2 (de) * | 1998-07-01 | 2003-11-13 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
DE19829379C2 (de) * | 1998-07-01 | 2002-11-07 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
JP3475840B2 (ja) * | 1999-03-03 | 2003-12-10 | 株式会社デンソー | ノックセンサ |
JP3910030B2 (ja) * | 2001-09-19 | 2007-04-25 | 日本特殊陶業株式会社 | 内燃機関のノッキング検出装置 |
-
1999
- 1999-12-15 DE DE19960328A patent/DE19960328B4/de not_active Expired - Lifetime
-
2000
- 2000-12-14 KR KR1020027006852A patent/KR100744962B1/ko active IP Right Grant
- 2000-12-14 WO PCT/DE2000/004471 patent/WO2001044772A1/de not_active Application Discontinuation
- 2000-12-14 US US10/149,845 patent/US6786078B2/en not_active Expired - Lifetime
- 2000-12-14 JP JP2001545815A patent/JP4664560B2/ja not_active Expired - Lifetime
- 2000-12-14 EP EP00990538A patent/EP1240490A1/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5744698A (en) * | 1994-02-01 | 1998-04-28 | Siemens Automotive, S.A. | Accelerometric sensor for measuring the piston knock of an internal combustion engine |
DE19727703A1 (de) * | 1997-06-30 | 1999-01-14 | Bosch Gmbh Robert | Schwingungsaufnehmer mit Druckhülse |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100451590C (zh) * | 2005-11-22 | 2009-01-14 | 三菱电机株式会社 | 爆震传感器 |
Also Published As
Publication number | Publication date |
---|---|
KR20020065540A (ko) | 2002-08-13 |
US20040011135A1 (en) | 2004-01-22 |
US6786078B2 (en) | 2004-09-07 |
KR100744962B1 (ko) | 2007-08-02 |
JP4664560B2 (ja) | 2011-04-06 |
DE19960328B4 (de) | 2008-05-15 |
DE19960328A1 (de) | 2001-06-21 |
JP2003517597A (ja) | 2003-05-27 |
EP1240490A1 (de) | 2002-09-18 |
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