CN200947105Y - Apparatus for measuring velocity of crankshaft - Google Patents
Apparatus for measuring velocity of crankshaft Download PDFInfo
- Publication number
- CN200947105Y CN200947105Y CNU2006200440290U CN200620044029U CN200947105Y CN 200947105 Y CN200947105 Y CN 200947105Y CN U2006200440290 U CNU2006200440290 U CN U2006200440290U CN 200620044029 U CN200620044029 U CN 200620044029U CN 200947105 Y CN200947105 Y CN 200947105Y
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- signal panels
- signal
- measurement mechanism
- sensor
- speed measurement
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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
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model discloses a new bent axle speed detector. The signal tray with distributed regularly signal gears in major areas is fixed out of the engine flying gear, and also has an area with no signal gears. The sensor feels and detects the changes of the mand moreagnetic field in the signal gears areas, and produces the electric signal. The sensor is electrically connected with engine administration. The engine administration fixes the direction of the valve and the rotate speed of the bend axle to achieve the lightning control after the electric signal is transmitted to the engine administration .The utility model needs no electricity-division device as the control method, therefore, the utility model is simple structured and has a low failure rate. Further more, the utility model can avoid the complex lightning control progress and the problem of wireless electric wave interference.
Description
Technical field
The present invention relates to engine technology, relate in particular to a kind of crankshaft speed measurement mechanism.
Background technology
In engine, the time sequencing of controlling each cylinder firings is the prerequisite that guarantees the engine operate as normal.To realize best energy conversion efficiency in the engine operation, realize the abundant burning and the utilization of fuel oil, just need carry out plug ignition in the most appropriate time.The residing position of piston is depended in the control of the duration of ignition, therefore, realizes that according to the residing position of piston correct igniting is extremely important for engine operation.
Please referring to Fig. 1, this illustrates the IGNITION CONTROL schematic diagram that prior art adopts ignition distributor.
Described igniting provides high-tension electricity to realize to spark plug 15 by the distribution of ignition coil 13 by ignition distributor 12, and ignition coil 13 produces high-tension electricity by accumulator 14 power supplies, also is in series with ignition switch 16 on current supply circuit, to realize the control to ignition coil 13.In this IGNITION CONTROL principle, key is the time that ignition distributor 12 distributes high-tension electricity to light a fire to spark plug, and this drives ignition distributor 12 by exhaust cam shaft 11 and realizes.
As previously mentioned, position of piston is depended in igniting opportunity.Exhaust cam shaft 11 mechanically is connected by timing belt (figure does not show) with engine crankshaft (figure does not show) among Fig. 1, make the certain rotating ratio relation of maintenance between exhaust cam shaft and the bent axle, for example, typical rotating ratio is that speed of crankshaft is 2: 1 than exhaust cam shaft rotating speed.Because the corner of bent axle is directly related with piston position, therefore, the mechanical angle of exhaust cam shaft 11 also can reflect piston position.Described exhaust cam shaft 11 is connected with the main shaft of ignition distributor 12, exhaust cam shaft 11 rotations, and then ignition distributor 12 main axis rotation are lighted a fire to each spark plug power supply at suitable time point thereby control ignition distributor 12.Above-mentioned mechanical linkage process can realize the harmonious of the duration of ignition and piston position, satisfies the IGNITION CONTROL needs of engine.
But because the mode of above-mentioned ignition distributor control ignition is a kind of mechanical system, this mode can produce many problems.At first, often there was a mechanical failure for ignition distributor: ignition distributor is as mechanical organ, and constantly running is easy to generate fault, and as the distributor plate rhegma, the wearing and tearing of distributor shaft and cover, distributor plate and split fire head make moist and leak electricity or the like.Secondly, this sparking mode is constantly connected, is disconnected high-tension electricity owing to adopt mechanical contact, can produce bigger radio wave interference.At last, physical construction needs often to adjust ignition timing easily because a variety of causes causes matching loose.And because physical construction cooperates comparatively complexity, the adjustment of ignition timing is difficulty very.
Summary of the invention
At above-mentioned defective, the technical matters that the present invention solves is that a kind of crankshaft speed measurement mechanism is provided, and this device can accurately be measured position of piston information, the information Control plug ignition that uses this measurement to obtain, the problem that can avoid the ignition distributor control ignition to break down easily.
The crankshaft speed measurement mechanism that the utility model provides comprises: at engine flywheel periphery fixed signal dish, the signal panels tooth top that this signal panels periphery main region has regular distribution also has the signal panels hypodontia zone of the described signal panels tooth top that do not distribute; The changes of magnetic field in described signal panels tooth top of one sensor sensing and signal panels hypodontia zone, and generation electric signal, this sensor is electrically connected with the engine management device, after the electric signal of its generation outputs to described engine management device, the engine management device is determined speed of crankshaft and piston position according to this electric signal, realizes IGNITION CONTROL.
Preferably, on the described signal panels, the main region of 58 tooth tops as described regular distribution signal panels tooth top to be set continuously in the even mode that distributes 60 tooth tops of whole signal panels periphery; Described signal panels hypodontia zone occupies the position that continuous 2 tooth tops distribute.
Preferably, described sensor is fixed on the gear box casing.
Preferably, described center sensor is a magnetic core, is wound with coil on every side, its measurement face and signal panels tooth top fixed distance; Described signal panels are that ferromagnetic material is made.
Preferably, described magnetic core comprises two sections of permanent magnet and soft magnets, and the magnet of described measurement face one end is soft magnet.
Preferably, the distance range of described sensor measurement face and signal panels tooth top is 0.8-1mm.
Preferably, described signal panels adopt No. 08 steel to make.
Preferably, the relative bent axle in position in described signal panels hypodontia zone and the fixed angle of the locating sleeve between flywheel.
Because the utility model patent does not need to adopt the control mode of ignition distributor as ignition timing, therefore, its physical construction is simple, and failure rate is low.Simultaneously, because therefore the adjustment of ignition timing can also avoid complicated ignition timing adjustment process by adjusting the parameter realization of engine management device.In addition, owing to need not to control the switch-on and-off of high-tension electricity, also avoided producing the problem of radio wave interference by mechanical contact.
Description of drawings
Fig. 1 is the theory diagram that prior art adopts ignition distributor control engine ignition;
Fig. 2 is the installation schematic diagram of the utility model first embodiment.
Embodiment
The utility model obtains piston position information by measuring in the rotational speed and the angle of the coaxial mounted flywheel of engine crankshaft, and the result of measurement is provided to engine management system, by the information Control ignition timing of management system according to this measurement.
Please referring to Fig. 1, for first embodiment of the invention is installed schematic diagram.
At the fixing suit signal panels of flywheel 29 peripheries, these signal panels are ferromagnetic component, No. 08 steel of the optimal selection of material, its periphery has the signal panels tooth top 27 of regular distribution, simultaneously, on whole signal panels, it is signal panels hypodontia zone 28 that a position is arranged, and this zone does not have described signal panels tooth top 27.There is a fixed angle in this signal panels hypodontia zone 28 with respect to the locating sleeve position of bent axle and flywheel 29 location, so that determine described signal panels hypodontia zone 28 and position of piston relation.The distribution mode of signal panels tooth top is in the present embodiment, be provided with according to 60 signal panels tooth tops of even distribution on the signal panels, but in fact have only 58 tooth tops, and a zone on signal panels lacks two tooth tops, this zone is exactly described signal panels hypodontia zone 28.
Realization is installed on the housing 24 of wheel box the rotational speed of flywheel and the sensor 22 of measurement of angle, during installation, keeps between sensor 22 measurement faces and the signal panels tooth top 27 apart from S=0.8～1mm.Soft magnet core 26 in the described sensor 22 is connected with permanent magnet 23, and wherein said measurement face adopts soft magnet for one section, and the magnetic field that above-mentioned magnet forms extends to ferromagnetic signal panels.When signal panels tooth top 27 and sensor 22 measurement faces over against the time, described sensor internal magnetic field strengthens.When the measurement face of hypodontia zone 28 and sensor 22 is relative, sensor interior loop field weakening.When flywheel 29 rotation, the measurement face of sensor 22 over against signal panels zone when be the signal panels tooth top 27 that occurs of rule regional, described sensor internal magnetic field produces the variation of regularity, thus the signal induced electricity of generation rule is exported; When the measurement face of sensor 22 over against described hypodontia zone 28 the time, original pulse electrical signal of generation in Gui Ze the electric signal.Because as previously mentioned, hypodontia zone 28 has specific setting angle, so the appearance time point of this pulse electrical signal corresponding to certain angle of flywheel 29, again owing to the relation of flywheel 29 with piston, thereby can determine according to this that the time point of this signal is corresponding to position of piston.Simultaneously, the cycle of this pulse electrical signal appearance can characterize speed of crankshaft.The output of sensor 22 is connected to the engine management device by cable 21, and the engine management device just can calculate piston position according to this signal, and according to this piston position information, the engine management device is directly controlled the plug ignition timing.When the ignition signal of engine management device output not during ignition timing in the best, can directly adjust the controlled variable of engine management device inside, as long as whole machinery cooperates link not occur becoming flexible, then necessarily can obtain correct ignition timing by parameter adjustment.
Adopt said method to measure the flywheel position, thereby carry out ignition timing control, can avoid using the mode of ignition distributor to be easy to generate the problem of mechanical fault, adjustment to ignition timing does not need to be undertaken by mechanical mode yet, and the parameter of directly adjusting the engine management device gets final product, and this makes this utility model have lower failure rate and better controllability with respect to prior art.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1, a kind of crankshaft speed measurement mechanism is characterized in that: at engine flywheel periphery fixed signal dish, the signal panels tooth top that this signal panels periphery main region has regular distribution also has the signal panels hypodontia zone of the described signal panels tooth top that do not distribute; The changes of magnetic field in described signal panels tooth top of one sensor sensing and signal panels hypodontia zone, and generation electric signal, this sensor is electrically connected with the engine management device, after the electric signal of its generation outputs to described engine management device, the engine management device is determined speed of crankshaft and piston position according to this electric signal, realizes IGNITION CONTROL.
2, crankshaft speed measurement mechanism according to claim 1 is characterized in that, on the described signal panels, in the even mode that distributes 60 tooth tops of whole signal panels periphery the main region of 58 tooth tops as described regular distribution signal panels tooth top to be set continuously; Described signal panels hypodontia zone occupies the position that continuous 2 tooth tops distribute.
3, crankshaft speed measurement mechanism according to claim 1 is characterized in that, described sensor is fixed on the gear box casing.
4, crankshaft speed measurement mechanism according to claim 1 is characterized in that, described center sensor is a magnetic core, is wound with coil on every side, its measurement face and signal panels tooth top fixed distance; Described signal panels are that ferromagnetic material is made.
5, crankshaft speed measurement mechanism according to claim 4 is characterized in that, described magnetic core comprises two sections of permanent magnet and soft magnets, and the magnet of described measurement face one end is soft magnet.
6, crankshaft speed measurement mechanism according to claim 4 is characterized in that, the distance range of described sensor measurement face and signal panels tooth top is 0.8-1mm.
7, crankshaft speed measurement mechanism according to claim 4 is characterized in that, described signal panels adopt No. 08 steel to make.
8, crankshaft speed measurement mechanism according to claim 1 is characterized in that, the relative bent axle in position in described signal panels hypodontia zone and the fixed angle of the locating sleeve between flywheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200440290U CN200947105Y (en) | 2006-07-19 | 2006-07-19 | Apparatus for measuring velocity of crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200440290U CN200947105Y (en) | 2006-07-19 | 2006-07-19 | Apparatus for measuring velocity of crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200947105Y true CN200947105Y (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200440290U Expired - Fee Related CN200947105Y (en) | 2006-07-19 | 2006-07-19 | Apparatus for measuring velocity of crankshaft |
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|---|---|
| CN (1) | CN200947105Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434304A (en) * | 2011-11-15 | 2012-05-02 | 力帆实业(集团)股份有限公司 | Crankshaft position target gear for engine |
| CN102435765A (en) * | 2011-10-26 | 2012-05-02 | 成都市翻鑫家科技有限公司 | Pulse output type rotation speed sensor |
| CN102839702A (en) * | 2012-09-21 | 2012-12-26 | 潍柴动力股份有限公司 | Bulldozer and electronic-controlled engine component of bulldozer |
| CN103245367A (en) * | 2013-04-23 | 2013-08-14 | 联合汽车电子有限公司 | Crankshaft position detection device and crankshaft signal wheel |
| CN104374941A (en) * | 2014-09-24 | 2015-02-25 | 昆山腾朗电子有限公司 | Engine rotating speed measuring device |
| CN105467149A (en) * | 2015-12-09 | 2016-04-06 | 合肥同智机电控制技术有限公司 | Switch display apparatus of engine rotating speed |
| CN105899955A (en) * | 2013-12-30 | 2016-08-24 | 德克萨斯仪器股份有限公司 | Gear sensing based on differential/asymmetric inductive sensing |
| CN106164543A (en) * | 2014-04-04 | 2016-11-23 | 捷豹路虎有限公司 | The velocity sensor of transmission for vehicles |
| CN107238728A (en) * | 2017-05-25 | 2017-10-10 | 深圳市深双保电器有限公司 | The adjustable magnetoelectric induction velocity sensor of peak value |
| CN110195652A (en) * | 2019-06-29 | 2019-09-03 | 潍柴动力股份有限公司 | A method of judging engine abnormity |
| CN112113769A (en) * | 2020-09-04 | 2020-12-22 | 广西玉柴机器股份有限公司 | Conversion device and conversion method for engine crankshaft angle mark signal |
-
2006
- 2006-07-19 CN CNU2006200440290U patent/CN200947105Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435765A (en) * | 2011-10-26 | 2012-05-02 | 成都市翻鑫家科技有限公司 | Pulse output type rotation speed sensor |
| CN102434304A (en) * | 2011-11-15 | 2012-05-02 | 力帆实业(集团)股份有限公司 | Crankshaft position target gear for engine |
| CN102839702A (en) * | 2012-09-21 | 2012-12-26 | 潍柴动力股份有限公司 | Bulldozer and electronic-controlled engine component of bulldozer |
| CN102839702B (en) * | 2012-09-21 | 2015-10-07 | 潍柴动力股份有限公司 | A kind of bulldozer and electric-control motor assembly thereof |
| CN103245367A (en) * | 2013-04-23 | 2013-08-14 | 联合汽车电子有限公司 | Crankshaft position detection device and crankshaft signal wheel |
| CN105899955A (en) * | 2013-12-30 | 2016-08-24 | 德克萨斯仪器股份有限公司 | Gear sensing based on differential/asymmetric inductive sensing |
| CN106164543B (en) * | 2014-04-04 | 2018-09-04 | 捷豹路虎有限公司 | The velocity sensor of transmission for vehicles |
| CN106164543A (en) * | 2014-04-04 | 2016-11-23 | 捷豹路虎有限公司 | The velocity sensor of transmission for vehicles |
| CN104374941A (en) * | 2014-09-24 | 2015-02-25 | 昆山腾朗电子有限公司 | Engine rotating speed measuring device |
| CN105467149A (en) * | 2015-12-09 | 2016-04-06 | 合肥同智机电控制技术有限公司 | Switch display apparatus of engine rotating speed |
| CN105467149B (en) * | 2015-12-09 | 2018-09-28 | 合肥同智机电控制技术有限公司 | The switching display device of engine speed |
| CN107238728A (en) * | 2017-05-25 | 2017-10-10 | 深圳市深双保电器有限公司 | The adjustable magnetoelectric induction velocity sensor of peak value |
| CN110195652A (en) * | 2019-06-29 | 2019-09-03 | 潍柴动力股份有限公司 | A method of judging engine abnormity |
| CN110195652B (en) * | 2019-06-29 | 2020-08-21 | 潍柴动力股份有限公司 | Method for judging abnormality of engine |
| CN112113769A (en) * | 2020-09-04 | 2020-12-22 | 广西玉柴机器股份有限公司 | Conversion device and conversion method for engine crankshaft angle mark signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HUAPU GUORUN CAR CO., LTD. Free format text: FORMER OWNER: SHANGHAI HUAPU ENGINE CO., LTD. Effective date: 20091016 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091016 Address after: Shanghai City, Jinshan District Fengjing Industrial Park, zip code: 201501 Co-patentee after: Shanghai Huapu Engine Co., Ltd. Patentee after: Shanghai Maple Guorun Automobile Co Address before: Shanghai City, Jinshan District Fengjing town Wanfeng Highway No. 2889, zip code: 201501 Patentee before: Shanghai Huapu Engine Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070912 Termination date: 20120719 |