CN206194273U - Engine signal wheel sensor semi -physical simulation teaching system - Google Patents
Engine signal wheel sensor semi -physical simulation teaching system Download PDFInfo
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- CN206194273U CN206194273U CN201621120366.3U CN201621120366U CN206194273U CN 206194273 U CN206194273 U CN 206194273U CN 201621120366 U CN201621120366 U CN 201621120366U CN 206194273 U CN206194273 U CN 206194273U
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Abstract
The utility model relates to a the utility model discloses an engine signal wheel sensor semi -physical simulation teaching system, including motor, crankshaft position sensor, camshaft position sensor, potentiometer controller, engine assay appearance, power, support frame, signal disc no. 1, signal disc no. 2, little band pulley, big band pulley, tooth belt, the motor is connected with potentiometer controller, crankshaft position sensor electricity respectively, and engine analysis appearance is connected with crankshaft position sensor, camshaft position sensor electricity respectively, and the power is connected with potentiometer controller, camshaft position sensor electricity respectively, support frame and signal disc no. 1, signal disc no. 2, little band pulley, big band pulley, crankshaft position sensor, camshaft position sensor are connected, the tooth belt respectively with little band pulley, greatly the band pulley be connected. The utility model discloses stronger demonstration function and structure display function has, the running situation of the engine signal that truly restores wheel sensor, and signal output accords with engine moving truth, and right time is accurate.
Description
Technical field
The utility model is related to a kind of test system of simulated engine operating, and in particular to a kind of engine signal wheel is passed
Sensor HWIL simulation tutoring system.
Background technology
Signal wheel sensor is representative sensor in sensor, is that the tach signal of rotation is transformed into telecommunications
Number output sensor, Hall-type, magneto-electric and photoelectric tachometric transducer generally can be divided into according to test philosophy.On engine
The signal wheel sensor of use has two kinds, and one kind is crankshaft position sensor, and another kind is CMPS Camshaft Position Sensor, is to start
Particularly important sensor in electronic control system, more using Hall-type or magneto-electric, both sensors belong to signal
Take turns the sensor of triggering.Relation between camshaft-position signal and crankshaft-position signal is that bent axle takes two turns, camshaft signal
Rotor turns around, and crankshaft-position signal rotor takes two turns, and engine computer can judge cylinder according to the signal of two sensors
Impulse stroke simultaneously controls electronic spark advance moment, oil injection time and fuel injection pulsewidth, therefore its output signal is directly influencing igniting just
When, the precision of injection timing and VVT controls, so as to influence engine power performance, fuel consumption and emission spatter property.Therefore,
The sensor construction, operation principle, signal output characteristic are grasped for maintenance technician to be had to automobile failure diagnosis
Extremely important meaning.
Fundamentals of Sensors and the specialized core course that application is students of science and technology, its content of courses and the close phase of experiment
Close.At present, it is the prototype system on engine pedestal that the instruments used for education of in the market sensor are a kind of, and another kind is to use motor
Driver control, portioned product dsp controller controlled motor rotating speed, Measure Precision can meet substantially.The former cannot see that biography
The structure of sensor, the wasting of resources and environmental pollution are caused in the when engine operation of measurement and the reading of signal, and the latter is single
The displaying of the structure and operation principle of sensor, it is impossible to show two kinds of signals of sensor when engine works well and close
System.
Utility model content
The purpose of this utility model is to provide a kind of engine signal wheel sensor HWIL simulation tutoring system, with compared with
Strong demo function and configuration shows function, the signal waveform measurement function of having sensor again, contribute to engineers and technicians to slap
Sensor construction, operation principle and signal output are held, the working order of true reduction engine signal wheel sensor, and signal is defeated
Go out to meet the truth of engine operating, and timing is accurate.
In order to achieve the above object, the utility model has following technical scheme：
A kind of engine signal wheel sensor HWIL simulation tutoring system of the present utility model, including motor, bent axle position
Put sensor, CMPS Camshaft Position Sensor, potentiometer controller, engine analyzer, power supply, support frame, signal panels one, signal
Disk two, small pulley, big belt wheel, cog belt, the motor are electrically connected with potentiometer controller, crankshaft position sensor respectively, hair
Motivational research instrument is electrically connected with crankshaft position sensor, CMPS Camshaft Position Sensor respectively, power supply respectively with potentiometer controller,
CMPS Camshaft Position Sensor is electrically connected；Support frame as described above is passed with signal panels one, signal panels two, small pulley, big belt wheel, crank position
Sensor, CMPS Camshaft Position Sensor connection, cog belt are connected with small pulley, big belt wheel respectively；The potentiometer controller passes through
Control voltage is exported, controlled motor rotating speed, 0-3640 revs/min of speed adjustable range；Motor directly drives crankshaft position sensor to rotate,
By speed of crankshaft and camshaft speed are 2 during the engine real-world operation simulated：1 relation, so passing through bent axle
Position sensor is driven by small pulley, big belt wheel and driven, and gearratio is 2:1 rotational band moving cam axle sensor is rotated,
Engine analyzer is installed signal testing passage 1 and passage 2 is connected respectively to crankshaft position sensor and camshaft location is passed
Sensor signal output end, respectively obtains two signal output characteristics of sensor, by changing potentiometer controller output voltage,
Simulated engine operating just obtains different running speeds, therefore can see the signal output characteristic in the case of different rotating speeds.
Wherein, the crankshaft position sensor includes sensor lead, permanent magnet, air gap one, double wedge, signal wheel one,
The sensor lead is respectively holding wire, signal ground and shielding line, and the holding wire is connected with the coil on permanent magnet, institute
Signal wheel one is stated positioned at permanent magnet lower section, air gap one is located between signal wheel one and permanent magnet, and the double wedge is in signal wheel
One edge.
Wherein, the CMPS Camshaft Position Sensor includes impeller, signal wheel two, permanent magnet, Hall element, air gap two,
The signal wheel two is connected with permanent magnet, and air gap two is located between signal wheel and Hall element, and impeller is on the side of signal wheel two
On edge.
Due to taking above technical scheme, the utility model has the advantage of：
The utility model is compared with conventional welding devices：
1st, with stronger demo function and configuration shows function, there is the signal waveform measurement function of sensor again, help
Sensor construction, operation principle and signal output are grasped in engineers and technicians.
2nd, the testing stand replaces engine to operate with motor, reduces air pollution, and realizes electric machine speed regulation with power supply, adjusts
0-3640 revs/min of fast scope.
3rd, the working order of true reduction engine signal wheel sensor, and signal output meets the true of engine operating
Situation, and timing is accurate.
Brief description of the drawings
Fig. 1 is the block diagram of the utility model system；
Fig. 2 is the schematic diagram of the utility model structure；
Fig. 3 is the structural representation of the utility model crankshaft position sensor；
Fig. 4 is the structural representation of the utility model CMPS Camshaft Position Sensor；
Fig. 5 is the utility model CMPS Camshaft Position Sensor and CMPS Camshaft Position Sensor in the case of 760 revs/min of idling
Signal output waveform figure；
Fig. 6 is that the utility model CMPS Camshaft Position Sensor and CMPS Camshaft Position Sensor in the case of 1800 revs/min are defeated
Go out signal waveforms；
Fig. 7 is that the utility model CMPS Camshaft Position Sensor and CMPS Camshaft Position Sensor in the case of 3450 revs/min are defeated
Go out signal waveforms；
Fig. 8 is the utility model CMPS Camshaft Position Sensor and camshaft location in the case of 3640 revs/min of maximum (top) speed
Sensor signal output waveform figure.
In figure：1 motor, 2 support frames, 3 small pulleys, 4 CMPS Camshaft Position Sensors, 5 signal panels, 6 cog belts, 7 big belt wheels,
8 signal panels, 9 crankshaft position sensors, 1-1 sensor leads, 2-1 permanent magnets, 3-1 air gaps one, 4-1 double wedges, 5-1 signal wheels
One, 1-2 impeller, 2-2 signals wheel two, 3-2 permanent magnets, 4-2 Hall elements, 5-2 air gaps two；U-CH1 passages 1, U-CH2 passages
2。
Specific embodiment
Following examples are used to illustrate the utility model, but are not limited to scope of the present utility model.
Referring to accompanying drawing 1-8, a kind of engine signal wheel sensor HWIL simulation tutoring system of the present utility model, including
Motor, crankshaft position sensor, CMPS Camshaft Position Sensor, potentiometer controller, engine analyzer, power supply, support frame, letter
Dialer one, signal panels two, small pulley, big belt wheel, cog belt, the motor are sensed with potentiometer controller, crank position respectively
Device is electrically connected, and engine analyzer electrically connects with crankshaft position sensor, CMPS Camshaft Position Sensor respectively, power supply respectively with electricity
Position meter controller, CMPS Camshaft Position Sensor electrical connection；Support frame as described above and signal panels one, signal panels two, small pulley, big band
Wheel, crankshaft position sensor, CMPS Camshaft Position Sensor connection, cog belt are connected with small pulley, big belt wheel respectively；The current potential
Meter controller is exported by control voltage, controlled motor rotating speed, 0-3640 revs/min of speed adjustable range；Motor is directly with dynamic crankshaft position
Sensor rotation is put, by speed of crankshaft and camshaft speed are 2 during the engine real-world operation simulated：1 relation,
So be driven by small pulley, big belt wheel by crankshaft position sensor driving, gearratio is 2:1 rotational band moving cam axle is sensed
Device is rotated, and engine analyzer is installed signal testing passage 1 and passage 2 is connected respectively to crankshaft position sensor and convex
Wheel shaft position sensor signal output end, respectively obtains two signal output characteristics of sensor, by changing potentiometer control
Device output voltage, simulated engine operating just obtains different running speeds, therefore can see the signal in the case of different rotating speeds
Output characteristics.
The crankshaft position sensor includes sensor lead, permanent magnet, air gap one, double wedge, signal wheel one, the biography
Sensor lead is respectively holding wire, signal ground and shielding line, and the holding wire is connected with the coil on permanent magnet, the signal
Wheel one is located at permanent magnet lower section, and air gap one is located between signal wheel one and permanent magnet, and the double wedge is on the side of signal wheel one
At edge.
Crankshaft position sensor constitutes core parts by the magnet coil outside a permanent magnet iron core and iron core.Its knot
Structure principle is as shown in figure 3, the wiring of sensor has three, holding wire, signal ground, shielding line.
Signal wheel is toothed disc type, and circumferentially uniform intervals make 58 double wedges, 57 small teeth and a canine tooth and lack, canine tooth
Lack shared radian and lack shared radian equivalent to two double wedges and 3 small teeth, canine tooth lacks output reference signal, and correspondence simulation is started
The position of the cylinder of machine 1 or 4 cylinder compression top centers, is used to judge speed of crankshaft and corner signal.Due to rotor double wedge and forever
Air gap one between long magnet directly affects the magnetic resistance and induction coil output voltage on this road just, therefore between double wedge and permanent magnet
The size of air gap one be typically designed as 0.2-0.4mm.The performance parameter of crankshaft position sensor is shown in Table 1 with technical specification.
The magneto electric type crankshaft position sensor performance parameter of table 1 and technical specification
The CMPS Camshaft Position Sensor includes impeller, signal wheel two, permanent magnet, Hall element, air gap two, the letter
Number wheel two is connected with permanent magnet, and, positioned between signal wheel and Hall element, impeller is on the edge of signal wheel two for air gap two.
CMPS Camshaft Position Sensor compact conformation, main composition parts are few, and assembly technology is easy.Camshaft location is sensed
Its structural principle of device is as shown in Figure 4.Signal wheel two triggers impeller also known as signal, when the impeller on signal wheel two is by Hall element
Output low level, it is output status high to leave Hall element, and its effect is to sense exactly, detect camshaft in the hair simulated
Relative rotation angle position in motivation running, and ECU is supplied in voltage signal form, it is easy to ECU combination crank positions
Sensor signal, is appropriately determined the operating phase residing for the moment per cylinder engine, makes system according to the engine of regulation
Job order control fuel oil injection and ignition order.So as to more precisely control the combustion process of engine, harmful combustion is reduced
Burn emission.CMPS Camshaft Position Sensor uses three leads, and one is power line that engine computer is powered, and one is sensing
Device supply lines, also one is ground strap.The performance parameter and technical specification of CMPS Camshaft Position Sensor are shown in Table 2.
The Hall camshaft position sensor performance parameter of table 2 and technical specification
Drive disk assembly is designed and type selecting：
Motor, chooses small low-voltage dc motor, the production of Yi Jufeng Science and Technology Ltd.s of Shenzhen of manufacturer
MY6812A type motors, operating voltage 12v, non-loaded rotating speed 3800, power output is 100W, and the daily duration of runs is small no more than 4
When, crankshaft position sensor and CMPS Camshaft Position Sensor are to realize engine ignition timing, injection timing and reduce to discharge dirty
Contaminate the very important sensor of thing, it is necessary to Synchronous Transmission, and gearratio i=2, because cog belt has noise small, low cost,
Reliable operation, elongation is small, the features such as transmitting accuracy is high, meets the performance requirement of testing stand.According to transmission power and rotating speed simultaneously
The model of cog belt is chosen with reference to actual conditions, finally the number of teeth and structural parameters of determination bandwidth and big small pulley are as follows.
Timing Belt model：60XL025；
Small band tooth number：16；
Small pulley pitch diameter 25.87mm；
The big belt wheel number of teeth：32；
Big belt wheel pitch diameter:51.74mm；
Bandwidth 6.4mm；
Centre-to-centre spacing：100mm.
DC motor speed is controlled：
When motor uses direct current generator, direct current generator can be divided into by the difference of excitation mode：Separate excitation, shunt excitation, series excitation and multiple
Encourage four kinds of motor.Different exciting mode, the mechanical characteristic of direct current generator is also different.The artificial machinery for direct current generator
Characteristic equation is：
In formula：n0The ideal no-load speed of motor, its value is
Δ n is speed discrepancy；
UaPressure is armature supply electricity (V)；
RaIt is armatureresistance (Ω)；
φ is magnetic flux (Wb)；
CEIt is the coefficient of potential；
CTMoment coefficient；
T is the time.
By formula as can be seen that wanting the regulation motor rotating speed must to change armature resistance Ra, armature voltage UaWith magnetic flux φ, but
It is that can realize smooth stepless speed regulation using changing armature voltage speed governing, and speed governing stabilization, the advantages of speed adjustable range is big.Therefore this
Utility model changes armature voltage so as to change motor speed in the form of potentiometer controller partial pressure.Use Beijing dragon
The B10K potentiometer controller controlled motor rotating speeds of electric Electric Machine Co., Ltd's production, range of regulation is in 0-12V.
Semi-matter simulating system performance test：
The power supply SPD-400-XX that the large rich electronics in Changzhou is provided is connected in the utility model system, power supply has 12V's
Doubleway output is powered, and provides reliable power supply to motor and CMPS Camshaft Position Sensor respectively.Use Bosch Nanjing Automobile part
The engine analyzer of Co., Ltd's production, model FSA740 reads sensor signal output waveform of the motor in different rotating speeds, leads to
The collecting crankshaft position signalling output waveform of road 1, the collection camshaft-position signal waveform of passage 2, crankshaft position sensor, camshaft
Position sensor signal output system test as shown in figure 1, signal output waveform as viewed in figures 5-8.Can from Fig. 5-8
Go out crankshaft position sensor to take two turns, CMPS Camshaft Position Sensor turns around, it is big in simulated engine bent axle magnetoelectric sensor
Tooth hypodontia output baseband signal just corresponds to camshaft output low level, now the as signal of 1 cylinder compression top center, by examination
Checking shows 0-3640 revs/min of the signal testing stand speed adjustable range, and signal output meets simulated engine signal output feature,
Meet design requirement.
Power supply：The power supply SPD-400-XX that the large rich electronics in Changzhou is provided is connected on experimental bench, the power supply has two-way defeated
Go out power supply, provide reliable power supply to motor and Hall sensor respectively.
Motor：Small low-voltage dc motor is chosen, the production of Yi Jufeng Science and Technology Ltd.s of Shenzhen of manufacturer
MY6812A type motors, operating voltage 12v, non-loaded rotating speed 3800, power output is 100W, and the daily duration of runs is small no more than 4
When.
Potentiometer controller：The system changes armature voltage so as to change motor speed in the form of potentiometer partial pressure.
The B10K potentiometer controller controlled motor rotating speeds of Beijing Long electricity Electric Machine Co., Ltd production are used, range of regulation is in 0-
12V。
ECU (Electronic Control Unit) electronic control unit, also known as " car running computer ", " vehicle-mounted computer " etc..
It is then automobile specified microcomputerized controller from purposes, is also automobile specified single-chip microcomputer.It as common single-chip microcomputer, by micro-
Processor (CPU), memory (ROM, RAM), input/output interface (I/O), analog-digital converter (A/D) and shaping, driving etc.
Large scale integrated circuit is constituted.
VVT VVTs, are exactly under specific engine operating condition, to be carried by controlling IO Intake Valve Opens angle
Preceding and delay realizes increase charge and efficiency to adjust the size at intake and exhaust amount and moment and change valve overlap,
Preferably tissue intake swirl, adjusts cylinder-firing pressure and residual waste gas quantity to obtain engine power, moment of torsion, discharge, combustion
The improvement of the combination properties such as oily economy, comfortableness, so as to solve the property indices of the fixed port timing engine of tradition
Between mutually restriction technical contradiction.
Engine signal wheel sensor of the present utility model is to realize engine timing, improve engine performance and the row of reduction
The important sensor put, the teaching simulation System using motor instead of engine operate, so as to realize signal wheel sensor by
According to the facts border Operation Conditions work, and its output signal is acquired using engine comprehensive diagnostic instrument, as a result show to be exported
Signal meets the signal output rule of sensor when engine works.And the system has stronger demo function and configuration shows
Function, contributes to engineers and technicians to grasp sensor construction, operation principle and signal output
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to implementation method of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.Here all of implementation method cannot be exhaustive.
It is every to belong to the obvious change or change still in of the present utility model that the technical solution of the utility model extends out
The row of protection domain.
Claims (3)
1. a kind of engine signal wheel sensor HWIL simulation tutoring system, it is characterised in that：Passed including motor, crank position
Sensor, CMPS Camshaft Position Sensor, potentiometer controller, engine analyzer, power supply, support frame, signal panels one, signal panels
2nd, small pulley, big belt wheel, cog belt, the motor are electrically connected with potentiometer controller, crankshaft position sensor respectively, are started
Machine analyzer is electrically connected with crankshaft position sensor, CMPS Camshaft Position Sensor respectively, power supply respectively with potentiometer controller, convex
Wheel shaft position sensor electrical connection；Support frame as described above and signal panels one, signal panels two, small pulley, big belt wheel, crank position sensing
Device, CMPS Camshaft Position Sensor connection, cog belt are connected with small pulley, big belt wheel respectively；The potentiometer controller is by control
Voltage output processed, controlled motor rotating speed, 0-3640 revs/min of speed adjustable range；Motor directly drives crankshaft position sensor to rotate, by
Speed of crankshaft and camshaft speed are 2 during the engine real-world operation simulated：1 relation, so by bent axle position
Put the small pulley of sensor, big belt wheel transmission to drive, gearratio is 2:1 rotational band moving cam axle sensor is rotated, hair
Motivational research instrument installs signal testing passage 1 and passage 2 is connected respectively to crankshaft position sensor and CMPS Camshaft Position Sensor
Signal output part, respectively obtains two signal output characteristics of sensor, by changing potentiometer controller output voltage, simulation
Engine operating just obtains different running speeds, therefore can see the signal output characteristic in the case of different rotating speeds.
2. according to a kind of engine signal wheel sensor HWIL simulation tutoring system described in claim 1, it is characterised in that：
The crankshaft position sensor includes sensor lead, permanent magnet, air gap, double wedge, signal wheel, the sensor lead difference
It is holding wire, signal ground and shielding line, the holding wire is connected with the coil on permanent magnet, the signal wheel is located at permanent magnetic
Iron lower section, air gap is located between signal wheel and permanent magnet, and the double wedge is in the edge of signal wheel.
3. according to a kind of engine signal wheel sensor HWIL simulation tutoring system described in claim 1, it is characterised in that：
The CMPS Camshaft Position Sensor includes impeller, signal wheel, permanent magnet, Hall element, air gap, the signal wheel and permanent magnetic
Iron is connected, and air gap is located between signal wheel and Hall element, and impeller is on the edge of signal wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621120366.3U CN206194273U (en) | 2016-10-13 | 2016-10-13 | Engine signal wheel sensor semi -physical simulation teaching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621120366.3U CN206194273U (en) | 2016-10-13 | 2016-10-13 | Engine signal wheel sensor semi -physical simulation teaching system |
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| Publication Number | Publication Date |
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| CN206194273U true CN206194273U (en) | 2017-05-24 |
Family
ID=58730909
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| CN201621120366.3U Expired - Fee Related CN206194273U (en) | 2016-10-13 | 2016-10-13 | Engine signal wheel sensor semi -physical simulation teaching system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907336A (en) * | 2017-11-27 | 2018-04-13 | 宁波市鄞州德来特技术有限公司 | A kind of engine variable-valve timing simulation system and its analogy method |
| CN107945644A (en) * | 2016-10-13 | 2018-04-20 | 北京电子科技职业学院 | Engine signal wheel sensor HWIL simulation tutoring system |
| CN111561414A (en) * | 2020-04-29 | 2020-08-21 | 河南柴油机重工有限责任公司 | Method and device for measuring rotation speed fluctuation of camshaft of high-pressure oil pump |
-
2016
- 2016-10-13 CN CN201621120366.3U patent/CN206194273U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945644A (en) * | 2016-10-13 | 2018-04-20 | 北京电子科技职业学院 | Engine signal wheel sensor HWIL simulation tutoring system |
| CN107907336A (en) * | 2017-11-27 | 2018-04-13 | 宁波市鄞州德来特技术有限公司 | A kind of engine variable-valve timing simulation system and its analogy method |
| CN107907336B (en) * | 2017-11-27 | 2023-11-03 | 宁波市鄞州德来特技术有限公司 | Variable valve timing simulation system and simulation method for engine |
| CN111561414A (en) * | 2020-04-29 | 2020-08-21 | 河南柴油机重工有限责任公司 | Method and device for measuring rotation speed fluctuation of camshaft of high-pressure oil pump |
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