CN105840327A - Phase detection device and system of engine - Google Patents
Phase detection device and system of engine Download PDFInfo
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- CN105840327A CN105840327A CN201610202700.8A CN201610202700A CN105840327A CN 105840327 A CN105840327 A CN 105840327A CN 201610202700 A CN201610202700 A CN 201610202700A CN 105840327 A CN105840327 A CN 105840327A
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- camshaft
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- tooth
- hypodontia
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
- F02B77/087—Safety, indicating or supervising devices determining top dead centre or ignition-timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3005—Details not otherwise provided for
Abstract
The invention relates to a phase detection device of an engine. A cam shaft signal panel of the device is fixedly installed on a cam shaft. A crankshaft signal panel is fixedly installed on a crankshaft. Three normal teeth and an extra tooth are distributed at the edge of the cam shaft signal panel at equal intervals, and the extra tooth is located between two of the three normal teeth. N continuous equally-spaced teeth and a missing tooth are distributed at the edge of the crankshaft signal panel. A first Hall sensor is fixed to the edge of the cam shaft signal panel, and a second Hall sensor is fixed to the edge of the crankshaft signal panel. A cam shaft pulse signal which is generated by the first Hall sensor and represents cam shaft phase information and a crankshaft pulse signal which is generated by the second Hall sensor and represents crankshaft phase information are transmitted to an engine phase detection module. The engine phase detection module carries out analysis treatment on the cam shaft pulse signal and the crankshaft pulse signal so that engine phase data can be obtained. By means of the phase detection device of the engine, the start time of the engine is shortened, performance of an electric control system of the engine is improved, and the robustness of the electric control system is enhanced.
Description
Technical field:
The invention belongs to engine electric-controlled system field, relate to a kind of engine phase position detection device and detecting system.
Background technology:
Engine phase position detection is a core content of electric-control system timing control, and it is carried out fuel oil injection and igniting etc. and controls
Basis, judge that engine phase position can shorten startup time of electromotor fast and accurately, thus improve electric-control system performance.
In a cycle of operation of electromotor, bent axle revolves the camshaft rotation that takes two turns and turns around, and i.e. one cycle of operation is 720 °
Crankshaft angles (angular unit unification crankshaft angles represents).During engine work, need the bent axle and convex according to input
The phase relation of wheel axis signal determines engine phase position, thus the control for fuel oil injection and igniting provides angle.Presently, there are many
Plant the invention for 4,6 cylinder machine crankshaft camshafts to design, but be not well positioned to meet the timing control demand of 3 cylinder machines, and
Traditional detection method, determines that the phase place of electromotor needs a working cycle, thus have impact on the startability of electromotor.Separately
Outward, in traditional control method, when crankshaft signal breaks down, electromotor quits work immediately, and the safety for system is brought
Hidden danger.
Summary of the invention:
The technical problem to be solved in the present invention is to provide one and is capable of bent axle rotation and turns around and interior determine engine phase position, shortens and sends out
The startup time of motivation, it is well positioned to meet engine phase position detection device and the detecting system of 3 cylinder machine timing control demands.
In order to solve the problems referred to above, the engine phase position detection device of the present invention includes the camshaft letter being fixed on camshaft
Dialer, the first Hall element, the crankshaft signal dish being fixed on bent axle, the second Hall element, engine phase position is examined
Survey module；Be spacedly distributed three orthodonts and one of the edge of described camshaft signal disk increases tooth, increases tooth and is positioned at two orthodonts
Between and and the interval of adjacent two orthodonts；Marginal distribution N number of continuous print tooth at equal intervals of crankshaft signal dish and one
Hypodontia；First Hall element and the second Hall element are individually fixed in camshaft signal disk and the edge of crankshaft signal dish, the
One Hall element produces the camshaft pulse signal representing camshaft phase information, and the second Hall element produces and represents bent axle phase
The CRANK PULSES signal of position information, camshaft pulse signal and CRANK PULSES signal are transferred to engine phase position detection module；Start
Camshaft pulse signal and CRANK PULSES signal are analyzed processing by machine phase detecting module, obtain engine phase position data；?
In one cycle of operation of electromotor, first Hall element produce camshaft pulse signal include three orthodont pulse signals and
One increases tooth pulse signal, and the CRANK PULSES signal that the second Hall element produces includes two hypodontia pulse signals.
In order to solve the problems referred to above, the engine phase position detecting system of the present invention includes following module:
Initialization module: two hypodontia pulses letters of three orthodont pulse signals of camshaft, increasing tooth pulse signal and bent axle are set
Number corresponding electromotor point of theory；The number of teeth of CRANK PULSES, hypodontia number are set；Crank teeth pulse count signal value i is set2=0；
Acquisition module: gather camshaft pulse signal and the bent axle arteries and veins of the second Hall element transmission of the first Hall element transmission
Rush signal；
CRANK PULSES signal processing module: according to the number of teeth, the frequency of scarce Tooth Number Calculation crank teeth of CRANK PULSES；Often detect
The relation of crank teeth pulse signal, relatively current tooth rim phase and a upper tooth rim phase, if current tooth rim phase and previous tooth rim phase
Ratio is more than software set value, it is determined that when nipper is edentulous site, crank teeth counting number value i2Resetting, crankshaft angles is clear simultaneously
Zero；It is otherwise tooth position, crank teeth counting number value i at equal intervals when nipper2Add 1；Frequency according to crank teeth and computation of Period
In the cycle of unit angle, the cycle according to unit angle produces the crankshaft angles of frequency multiplication, 0～360 ° of circulation afterwards；Start
Machine phase calculation module: calculate the differential seat angle of bent axle hypodontia pulse signal and camshaft pulse signal, knows when differential seat angle meets phase place
Other angular range, then engine phase position determines；Hereafter, electromotor angle-determining, according to bent axle periodic signal electromotor angle
0～720 ° of circulation.
Described engine phase position computing module is according to following two kinds of method identification engine phase positions.
Method one
According to three orthodont pulse signals of camshaft, increase tooth pulse signal and the two of bent axle corresponding starting of hypodontia pulse signal
Machine point of theory, calculates point of theory γ between the first hypodontia pulse signal 32-2 and previous camshaft pulse signal respectively1、
Point of theory γ between second hypodontia pulse signal 32-1 and previous camshaft pulse signal2；Hypodontia pulse detected every time
Signal, calculates between the crankshaft angles that crankshaft angles corresponding to this hypodontia pulse signal is corresponding with previous camshaft pulse signal
Difference γ；If γ meets: γ1-Δγ<γ<γ1+ Δ γ, it is determined that phase place, at the second hypodontia, now determines that electromotor angle is
360°；If γ meets: γ2-Δγ<γ<γ2+ Δ γ, it is determined that phase place, at the first hypodontia, now determines that electromotor angle is
0°；Wherein Δ γ is the angle tolerance set.
Method two
According to three orthodont pulse signals of camshaft, increase tooth pulse signal and the two of bent axle corresponding starting of hypodontia pulse signal
Machine point of theory, calculates point of theory β between the first hypodontia pulse signal 32-1 and later camshaft pulse signal respectively1、
Point of theory β between second hypodontia pulse signal 32-2 and later camshaft pulse signal2；Often detect that hypodontia pulse is believed
Number, then crankshaft angles resets；Calculate crankshaft angles β that first camshaft pulse signal after this hypodontia pulse signal is corresponding afterwards,
If meeting β1-Δβ<β<β1+ Δ β, confirmation is now first camshaft orthodont after the first hypodontia, now confirms to start
Machine angle is the electromotor point of theory that this camshaft orthodont is corresponding；If meeting β2-Δβ<β<β2During+Δ β, confirm this
Time be first camshaft orthodont after the second hypodontia, now confirm that electromotor angle is this corresponding starting of camshaft orthodont
Machine point of theory.
Present invention additionally comprises camshaft pulse signal processing module, crankshaft signal fault mode engine phase position detection mould further
Block；Described initialization module also sets up camshaft number of teeth enumerator i1=0；Camshaft pulse signal processing module, often detects convex
The relation of wheel shaft pulse signal, relatively current tooth rim phase and a upper tooth rim phase, if the ratio of current tooth rim phase and a upper tooth rim phase
Value is less than the threshold value set, it is determined that when nipper is for increasing tooth position, camshaft number of teeth count value i1Reset, the otherwise camshaft number of teeth
Count value i1Add 1；Described crankshaft signal fault mode engine phase position detection module: at bent axle and camshaft pulse signal the most just
Chang Shi, engine phase position it has been acknowledged that after, when confirm crankshaft signal fault time according to camshaft corresponding the starting of each pulse signal
Machine angle produces continuous print electromotor angle for initial；Confirm when engine start under crankshaft signal failure condition, when detecting
Camshaft determines engine phase position when increasing tooth pulse signal, and now electromotor angle is to increase electromotor angle corresponding to tooth, hereafter with
The electromotor angle of each camshaft pulse signal produces continuous print electromotor angle for initial.
Compared with traditional control, the invention has the beneficial effects as follows: 1) realize bent axle rotation and turn around and i.e. determine engine phase position,
Shorten time since engine start；2) when crankshaft signal breaks down, it is achieved camshaft signal determines engine phase position, and
The electromotor angle that output timing control needs.Thus improve the performance of engine electric-controlled system, enhance the Shandong of electric-control system
Rod.
Accompanying drawing illustrates:
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the engine phase position structure of the detecting device schematic diagram of the present invention.
Fig. 2 is the software processing flow figure of the present invention.
Fig. 3 is the engine phase position identification schematic diagram of the present invention.
Detailed description of the invention:
As it is shown in figure 1, the engine phase position detection device of the present invention includes the camshaft signal disk 1 being fixed on camshaft,
First Hall element 2, the crankshaft signal dish 3 being fixed on bent axle, the second Hall element 4, engine phase position is examined
Survey module.
The edge of described camshaft signal disk 1 is spacedly distributed first, second, third orthodont 11,12,13 and increasing
Tooth 14, increases tooth 14 between first, second orthodont 11,12 and near the first orthodont 11, each orthodont interval
240°。
Described crankshaft signal dish 3 use N-α tooth signal form (N number of tooth at equal intervals remove adjacent α tooth, N generally takes
60,36 is equivalent, and it is equivalent that α generally takes 1,2,3), i.e. the edge one of crankshaft signal dish 3 encloses except being distributed at equal intervals in addition to tooth 31
An also hypodontia 32, then two hypodontias (the first hypodontia and the second hypodontia) of appearance in one cycle of operation of electromotor, second
Hall element 4 is able to detect that two hypodontia pulse signals (i.e. the first hypodontia pulse signal 32-1 shown in Fig. 3 and
Two hypodontia pulse signal 32-2).
First Hall element 2 and the second Hall element 4 are individually fixed in camshaft signal disk 1 and the limit of crankshaft signal dish 3
Edge, and both output of pulse signals are connected to engine phase position detection module；Camshaft signal disk 1 and crankshaft signal dish 3
In rotary course, the first Hall element 2 produces the camshaft pulse signal representing camshaft phase information, the second hall sensing
Device 4 produces the CRANK PULSES signal representing crank phase information, and camshaft pulse signal and CRANK PULSES signal are transferred to electromotor
Phase detecting module；Camshaft pulse signal and CRANK PULSES signal are analyzed processing by engine phase position detection module, obtain
Engine phase position data.In one cycle of operation of electromotor, the camshaft pulse signal that the first Hall element 2 produces includes
First, second, third orthodont pulse signal 11 ', 12 ', 13 ' and increasing tooth pulse signal 14 ', the second Hall element 4 produces
Raw CRANK PULSES signal includes the first hypodontia pulse signal 32-1 and the second hypodontia pulse signal 32-2.
Described engine phase position detection module uses the software in control unit of engine to realize.
As in figure 2 it is shown, at bent axle and camshaft under normal circumstances, the phase identification flow process of engine phase position detection module is as follows:
A) software initialization is arranged.The function realized in initialization is as follows:
1) bent axle and the characteristic parameter of camshaft pulse signal are set: characteristic parameter includes that CRANK PULSES signal is effectively along type (figure
CRANK PULSES signal shown in 3 is effectively along being trailing edge), the bent axle number of teeth, bent axle hypodontia number, crank teeth counting number value i2=0,
Camshaft pulse signal effectively along type (the camshaft pulse signal shown in Fig. 3 effectively along be trailing edge), the camshaft number of teeth,
Camshaft number of teeth count value i1=0, the window etc. of the theoretical position of camshaft pulse signal, phase identification.When bent axle and camshaft
When theoretical position determines, the theoretical position of camshaft pulse signal i.e. has determined that.As a example by Fig. 3, set camshaft signal disk 1
First, second, third orthodont pulse signal 11 ', 12 ', 13 ' and to increase the corresponding electromotor of tooth pulse signal 14 ' theoretical
Angle (zero point of electromotor angle is from the beginning of the first hypodontia pulse signal 32-1) is α 1, α 2, α 3, α+；Bent axle first
Hypodontia pulse signal 32-1 and the second electromotor point of theory corresponding for hypodontia pulse signal 32-2 are respectively 0 ° and 360 °.
2) according to first, second, third orthodont pulse signal 11 ', 12 ', 13 ' and the increasing dyke punching letter of camshaft signal disk
Numbers 14 ' corresponding electromotor point of theory α 1, α 2, α 3, α+, and crankshaft signal dish the first hypodontia pulse signal 32-1 and
Second electromotor point of theory corresponding for hypodontia pulse signal 32-2, calculates the second hypodontia pulse signal 32-2 and second normal
Point of theory difference γ between tooth pulse signal 12 '1, the first hypodontia pulse signal 32-1 and the 3rd orthodont pulse signal 13 ' it
Between point of theory difference γ2, the point of theory between the first hypodontia pulse signal 32-1 and the first orthodont pulse signal 11 ' is poor
β1, point of theory difference β between the second hypodontia pulse signal 32-2 and the 3rd orthodont pulse signal 13 '2；Concurrently set
One angle tolerance Δ γ and the second angle tolerance Δ β.(note, angle is on the basis of CRANK PULSES signal, and phase place judges
A hypodontia pulse signal at least to be detected).
B) process of CRANK PULSES signal: according to the number of teeth, scarce Tooth Number Calculation bent axle tooth 31 and the hypodontia at equal intervals of CRANK PULSES
The frequency of 32；CRANK PULSES signal often detected, calculate the bent axle cycle when nipper (between i.e. two successive pulse signals
Interval), relatively current tooth rim phase and previous tooth period-luminosity relation, when current tooth rim phase and the ratio of previous tooth rim phase being detected
Example is more than software set value, i.e. determines when nipper is edentulous site, crank teeth counting number value i2Resetting, crankshaft angles resets simultaneously；
It is otherwise tooth position, crank teeth counting number value i at equal intervals when nipper2Add 1.Software is according to the frequency of crank teeth and computation of Period
In the cycle of unit angle, start cycle according to unit angle at each pulse signal and produce the crankshaft angles of frequency multiplication, the angle of bent axle
Degree is 0～360 ° of circulation.
C) process of camshaft pulse signal: camshaft pulse signal, camshaft number of teeth enumerator i often detected1Add 1, with
Time calculate camshaft when cycle (interval times of two successive pulse signals) of nipper.Relatively current tooth rim phase and previous
Tooth period-luminosity relation, when the ratio current tooth rim phase and previous tooth rim phase being detected is less than program according to increasing what tooth 14 position set
Threshold value, it is determined that when nipper is for increasing tooth position, camshaft number of teeth counter O reset.Send out time all normal at bent axle and camshaft signal
Camshaft first, second, third orthodont pulse signal 11 ', 12 ', 13 ' and increasing dyke punching are believed after determining by motivation phase place
Numbers 14 ' corresponding electromotor angles are stored in ROM, for producing electromotor angle under crankshaft fault pattern.
D) determination strategy of phase identification has a following two kinds situation:
1, detect at CRANK PULSES signal edentulous site.Calculate the differential seat angle of CRANK PULSES signal hypodontia and camshaft pulse signal,
When differential seat angle meets the angular range of phase identification, then engine phase position determines.Hereafter, with this angle for initial output engine
Angle information, electromotor angle is 0～720 ° of circulation.As it is shown on figure 3, when electromotor before camshaft the second orthodont 12,
When starting after the first hypodontia, the crankshaft angles that camshaft pulse signal then recording pulse signal is corresponding detected every time.If detecting
Crankshaft angles corresponding to the second orthodont pulse signal 12 ' be γ12, detect during the second hypodontia pulse signal 32-2 corresponding
Crankshaft angles is γ32-2, calculate the difference γ=γ of two angles32-2-γ12；If γ meets: γ1-Δγ<γ<γ1+ Δ γ, it is determined that phase
Position, at the second hypodontia, now determines that electromotor angle is 360 °.When before camshaft the 3rd orthodont 13, the second hypodontia
During rear starting, detect that camshaft pulse signal then records the crankshaft angles that this pulse signal is corresponding.If the 3rd detected is normal
The crankshaft angles that tooth pulse signal 13 ' is corresponding is γ13, crankshaft angles corresponding when the first hypodontia pulse signal 32-1 being detected is
γ32-1, calculate the difference γ=γ of two angles32-1-γ13；If γ meets: γ2-Δγ<γ<γ2+ Δ γ, it is determined that phase place lacks first
At tooth, now determine that electromotor angle is 0 °.
2, detect along position at camshaft signal.When starting before the first hypodontia, after the 3rd orthodont 13, detect first
After hypodontia pulse signal 32-1, crankshaft angles resets；Corresponding crankshaft angles β is calculated when camshaft pulse signal being detected,
When meeting β1-Δβ<β<β1During+Δ β, confirm to be now camshaft the first orthodont 11, now confirm that electromotor angle is α 1；
When starting before the second hypodontia, after the second orthodont 12, after the second hypodontia tooth pulse signal 32-2 being detected, crankshaft angles
Reset；Corresponding crankshaft angles β is calculated, when meeting β when camshaft pulse signal being detected2-Δβ<β<β2During+Δ β,
Confirm to be now camshaft the 3rd orthodont 13, now confirm that electromotor angle is α 3.
Under crankshaft fault pattern, the specific embodiments that use camshaft signal carries out engine phase position identification is as follows:
1) in initializing, relevant parameter is set.Including the camshaft pulse signal identified, the first of camshaft signal disk 1, the
Two, the 3rd orthodont 11,12,13 with increase electromotor point of theory α 1 corresponding to tooth 14 pulse signal, α 2, α 3, α+.
2) after all normal at bent axle and camshaft pulse signal and engine phase position confirms, when engine stabilizer operates, soft
The real engine angle that part record camshaft pulse signal is corresponding, and judge that actual electromotor angle is according to point of theory
No it is in effective range, when real engine angle is in effective range, then the angle information of record is stored to ROM.
3) confirmation of engine phase position.When crankshaft signal fault being detected, if camshaft phase has determined that, current power
Machine phase place confirms, when camshaft pulse signal the most often being detected, generates with the angle that this signal stores in ROM for initial angle
Electromotor angle；If camshaft phase does not determine, then detect that camshaft determines engine phase position when increasing tooth pulse signal,
Electromotor angle is generated with the angle of storage in ROM for initial afterwards at each pulse signal.
4) the raw angled method of camshaft pulse signal.According to 2) in the electromotor angle corresponding to each pulse signal of record
Degree calculates the differential seat angle of the prepulse of current PRF sum, according to the unit angle frequency of the computation of Period electromotor of current PRF signal
Rate, and calculate, according to the differential seat angle of next pulse and current PRF, the unit angle number needing to produce.Software is with current arteries and veins
The electromotor angle rushing signal is initial, according to the angular frequency output continuous print electromotor angle calculated, and ensures two cams
The angle number produced between axle pulse signal.
Claims (5)
1. an engine phase position detection device, it is characterised in that include the camshaft signal disk (1) being fixed on camshaft,
First Hall element (2), the crankshaft signal dish (3) being fixed on bent axle, the second Hall element (4), electromotor
Phase detecting module；Be spacedly distributed three orthodonts and one of the edge of described camshaft signal disk (1) increases tooth (14), increases
Tooth (14) is between two orthodonts and and the interval of adjacent two orthodonts；The edge of crankshaft signal dish (3) divides
The N number of continuous print of cloth tooth at equal intervals (31) and a hypodontia (32)；First Hall element (2) and the second Hall element
(4) being individually fixed in camshaft signal disk (1) and the edge of crankshaft signal dish (3), the first Hall element (2) produces
Representing the camshaft pulse signal of camshaft phase information, the second Hall element (3) produces the song representing crank phase information
Axle pulse signal, camshaft pulse signal and CRANK PULSES signal are transferred to engine phase position detection module；Engine phase position detects
Camshaft pulse signal and CRANK PULSES signal are analyzed processing by module, obtain engine phase position data；In one, electromotor
In cycle of operation, the camshaft pulse signal that the first Hall element (2) produces includes three orthodont pulse signals and one
Increasing tooth pulse signal, the CRANK PULSES signal that the second Hall element (4) produces includes two hypodontia pulse signals.
2. an engine phase position detecting system, it is characterised in that include following module:
Initialization module: two hypodontia pulses letters of three orthodont pulse signals of camshaft, increasing tooth pulse signal and bent axle are set
Number corresponding electromotor point of theory；The number of teeth of CRANK PULSES, hypodontia number are set；Crank teeth pulse count signal value i is set2=0；
Acquisition module: gather camshaft pulse signal and the bent axle arteries and veins of the second Hall element transmission of the first Hall element transmission
Rush signal；
CRANK PULSES signal processing module: according to the number of teeth, the frequency of scarce Tooth Number Calculation bent axle tooth at equal intervals of CRANK PULSES；Often
Crank teeth pulse signal detected, relatively current tooth rim phase and the relation of a upper tooth rim phase, if current tooth rim phase and previous tooth
The ratio in cycle is more than software set value, it is determined that when nipper is edentulous site, crank teeth counting number value i2Reset, bent axle simultaneously
Angle resets；It is otherwise tooth position, crank teeth counting number value i at equal intervals when nipper2Add 1；Frequency according to crank teeth and week
In the cycle of phase unit of account angle, the cycle according to unit angle produces the crankshaft angles of frequency multiplication, 0～360 ° of circulation afterwards.
Engine phase position detecting system the most according to claim 2, it is characterised in that described engine phase position computing module
Identify that the step of engine phase position is as follows:
According to three orthodont pulse signals of camshaft, increase tooth pulse signal and the two of bent axle corresponding starting of hypodontia pulse signal
Machine point of theory, calculates the point of theory between the first hypodontia pulse signal (32-1) and previous camshaft pulse signal respectively
γ1, point of theory γ between the second hypodontia pulse signal (32-2) and previous camshaft pulse signal2；Detect scarce every time
Tooth pulse signal, calculates the crankshaft angles that crankshaft angles corresponding to this hypodontia pulse signal is corresponding with previous camshaft pulse signal
Between difference γ；If γ meets: γ1-Δγ<γ<γ1+ Δ γ, it is determined that phase place, at the second hypodontia, now determines electromotor angle
Degree is 360 °；If γ meets: γ2-Δγ<γ<γ2+ Δ γ, it is determined that phase place, at the first hypodontia, now determines electromotor angle
Degree is 0 °；Wherein Δ γ is the angle tolerance set.
Engine phase position detecting system the most according to claim 2, it is characterised in that described engine phase position computing module
Identify that the step of engine phase position is as follows:
According to three orthodont pulse signals of camshaft, increase tooth pulse signal and the two of bent axle corresponding starting of hypodontia pulse signal
Machine point of theory, calculates the point of theory between the first hypodontia pulse signal (32-1) and later camshaft pulse signal respectively
β1, point of theory β between the second hypodontia pulse signal (32-2) and later camshaft pulse signal2；Hypodontia often detected
Pulse signal, then crankshaft angles resets；Calculate the bent axle that first camshaft pulse signal after this hypodontia pulse signal is corresponding afterwards
Angle beta, if meeting β1-Δβ<β<β1+ Δ β, confirmation is now first camshaft orthodont after the first hypodontia, now
Confirm that electromotor angle is the electromotor point of theory that this camshaft orthodont is corresponding；If meeting β2-Δβ<β<β2During+Δ β,
Confirmation is now first camshaft orthodont after the second hypodontia, now confirms that electromotor angle is that this camshaft orthodont is corresponding
Electromotor point of theory.
Engine phase position detecting system the most according to claim 2, it is characterised in that also include at camshaft pulse signal
Reason module, crankshaft signal fault mode engine phase position detection module；Described initialization module also sets up camshaft number of teeth enumerator
i1=0；Camshaft pulse signal processing module, often detects camshaft pulse signal, relatively current tooth rim phase and a upper tooth rim
The relation of phase, if the ratio of current tooth rim phase and a upper tooth rim phase is less than the threshold value set, it is determined that when nipper is for increasing tooth position,
Camshaft number of teeth count value i1Reset, otherwise camshaft number of teeth count value i1Add 1；Described crankshaft signal fault mode electromotor phase
Position detection module: when bent axle and camshaft pulse signal are all normal, engine phase position it has been acknowledged that after, when confirming crankshaft signal
Continuous print electromotor angle is produced according to the electromotor angle that each pulse signal of camshaft is corresponding for initial during fault；At electromotor
Confirm during startup under crankshaft signal failure condition, when detecting that camshaft determines engine phase position when increasing tooth pulse signal, now send out
Motivation angle is to increase the electromotor angle that tooth is corresponding, and hereafter the electromotor angle with each camshaft pulse signal connects for initial generation
Continuous electromotor angle.
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| CN201610202700.8A CN105840327A (en) | 2016-04-01 | 2016-04-01 | Phase detection device and system of engine |
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| CN201610202700.8A CN105840327A (en) | 2016-04-01 | 2016-04-01 | Phase detection device and system of engine |
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| CN109611205A (en) * | 2018-11-28 | 2019-04-12 | 天津大学 | Four-stroke engine method for detecting phases based on valve actuating mechanism rocker arm position detection |
| CN109899165A (en) * | 2017-12-11 | 2019-06-18 | 现代自动车株式会社 | Method for updating the crank position number of teeth in CRANK SENSOR |
| CN110044396A (en) * | 2019-05-24 | 2019-07-23 | 潍柴动力股份有限公司 | A kind of camshaft signal disk and engine phase position control method |
| CN110277879A (en) * | 2019-06-14 | 2019-09-24 | 重庆巩诚投资有限公司 | The measuring system of engine crankshaft position |
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| CN110475956A (en) * | 2017-03-30 | 2019-11-19 | 本田技研工业株式会社 | Internal combustion engine |
| CN109899165A (en) * | 2017-12-11 | 2019-06-18 | 现代自动车株式会社 | Method for updating the crank position number of teeth in CRANK SENSOR |
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| CN110277879A (en) * | 2019-06-14 | 2019-09-24 | 重庆巩诚投资有限公司 | The measuring system of engine crankshaft position |
| CN110296015B (en) * | 2019-08-26 | 2020-01-03 | 潍柴动力股份有限公司 | Camshaft fault detection method and device |
| CN110296015A (en) * | 2019-08-26 | 2019-10-01 | 潍柴动力股份有限公司 | A kind of camshaft fault detection method and device |
| CN111120128A (en) * | 2019-12-30 | 2020-05-08 | 潍柴动力股份有限公司 | Engine synchronization detection method and device |
| CN111120128B (en) * | 2019-12-30 | 2022-08-05 | 潍柴动力股份有限公司 | Engine synchronization detection method and device |
| CN113639770A (en) * | 2020-05-11 | 2021-11-12 | 中车株洲电力机车研究所有限公司 | Position calculation method based on synchronous motor photoelectric encoder and storage medium |
| CN113639770B (en) * | 2020-05-11 | 2024-04-02 | 中车株洲电力机车研究所有限公司 | Position calculating method based on synchronous motor photoelectric encoder and storage medium |
| 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 |
| CN114320640B (en) * | 2021-12-28 | 2023-01-31 | 中国北方发动机研究所(天津) | Rotational speed synchronous compensation control method based on eTPU |
| CN114320640A (en) * | 2021-12-28 | 2022-04-12 | 中国北方发动机研究所(天津) | Rotational speed synchronous compensation control method based on eTPU |
| CN114673574A (en) * | 2022-03-24 | 2022-06-28 | 潍柴动力股份有限公司 | Camshaft sensor self-adaptive identification method, engine and vehicle |
| CN114673574B (en) * | 2022-03-24 | 2023-03-21 | 潍柴动力股份有限公司 | Camshaft sensor self-adaptive identification method, engine and vehicle |
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