CN106032761A - An engine and an air cylinder determination method used for performing air cylinder determination in the engine - Google Patents
An engine and an air cylinder determination method used for performing air cylinder determination in the engine Download PDFInfo
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- CN106032761A CN106032761A CN201510108415.5A CN201510108415A CN106032761A CN 106032761 A CN106032761 A CN 106032761A CN 201510108415 A CN201510108415 A CN 201510108415A CN 106032761 A CN106032761 A CN 106032761A
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Abstract
The invention provides an engine and an air cylinder determination method used for performing air cylinder determination in the engine. The engine comprises a cam phase sensor and a crankshaft position sensor. The air cylinder determination of the engine can be completed through the combination of the cam phase sensor and the crankshaft position sensor. The engine also comprises a valve position sensor used for detecting the opening and closing of an intake valve and an exhaust valve. When the cam phase sensor fails, the air cylinder determination of the engine can be completed through the valve position sensor and the crankshaft position sensor. When the valve position sensor detects a rising edge of an opening signal of the exhaust valve and immediately then the crankshaft position sensor detects any missing tooth in missing teeth, the exhaust top dead center of a 1# cylinder is determined. When the valve position sensor detects a falling edge of an opening signal of the intake valve and immediately then the crankshaft position sensor detects any missing tooth in the missing teeth, the compression top dead center of the 1# cylinder is determined.
Description
Technical field
The present invention relates to a kind of electromotor and carry out the cylinder decision method of cylinder judgement wherein, more specifically coming
Say, even if relating to the electromotor that also can carry out cylinder judgement when cam phase sensor is in inefficacy
And cylinder decision method.
Background technology
In general, every electromotor all has crankshaft position sensor and cam phase sensor.Existing skill
Art is to utilize crankshaft position sensor and cam phase sensor common combination, completes the gas of electromotor
Cylinder position judges.It is to say, in the prior art, sentence to normally complete the cylinder location of electromotor
Fixed, crankshaft position sensor and cam phase sensor are indispensable.
But, vehicle actually used in, make cam phase sensor be in inefficacy because of some fault,
But crankshaft position sensor is still in the situation of normal work, now electromotor just cannot complete cylinder judgement,
Particularly in direct fuel-injection engine, resulting even in electromotor can not operate.
Now, also it has been proposed that sentence cylinder and admission pressure is sentenced cylinder both software and sentenced the side of cylinder by examination oil spout
Method.
When using examination oil spout to sentence cylinder, start and does not initially first consider order, to the oil spout simultaneously of four cylinders, according to
Feedback parameter such as top dead centre, rotating speed and oxygen sensor feature, set a series of correlated variables, by examining
The parameter comparison of the variable measured and the in the past corresponding engine condition of accumulation, scope is determined at 1# cylinder and
On 4# cylinder, ECM arbitrarily chooses a cylinder (1# cylinder or 4# cylinder) in this two cylinder afterwards, and assert that it is
1# cylinder, meanwhile, only to its oil spout.Then, by the variable detected is started to the corresponding of accumulation in the past
The parameter comparison of machine state, judges that former setting is the most correct.If it is determined that correct, then sentence cylinder success, on
Stating the cylinder arbitrarily chosen is 1# cylinder.The most above-mentioned cylinder arbitrarily chosen is actual is 4# cylinder, still
Can thus sentence cylinder.This sentencing cylinder technology, good reliability, pressure transducer, not by position limitation, may be installed
On inlet manifold, but decision logic is more complicated, it is impossible to realize efficiently, quickly sentencing cylinder.
It addition, find according to the Changing Pattern of test and research admission pressure, cylinder is operated in air inlet
During stroke, inlet valve throws open, and the manifold pressure near inlet valve has about 1kPa drastically
Pressure drop, the phenomenon of this dramatic decrease can detect by air inlet pressure sensor.Admission pressure is sentenced cylinder and is exactly based on
Through high-pass filtering and low-pass filtering, this signal is carried out separating treatment, and high-pass filtering processes the relevant confession of electromotor
Oil logic, and low-pass filtering realizes sentencing cylinder by software processes.Generally admission pressure Changing Pattern exists
Repeat in the range of one, when inlet valve is opened suddenly, rapid pressure drop near it, get rid of accidentally
Phenomenon, when ECM detects that the most this pressure drop can realize accurately sentencing cylinder.But, due on startup,
Air inlet, due to the instability of engine speed, easily produces bigger error, thus, easily produce erroneous judgement,
And make the reliability sentencing cylinder reduce.
How can be in inefficacy at cam phase sensor but crankshaft position sensor is still in normal work
In the case of efficiently, rapidly and reliably realize electromotor cylinder judge so that electromotor can normally start
Become as technical problem urgently to be resolved hurrily.
Summary of the invention
It is an object of the invention to provide a kind of electromotor and carry out the cylinder judgement side of cylinder judgement wherein
Method, even if cam phase sensor within the engine is in inefficacy but crankshaft position sensor is still in just
Often in the case of work, the cylinder that also can efficiently, rapidly and reliably complete electromotor judges, so that sending out
Motivation can normally start.
The electromotor of a first aspect of the present invention includes the cam phase for detecting the phase place of cam
Level sensor and be also in the crank position sensing that hypodontia detects for bent axle being positioned at orthodont
Device, can utilize described cam phase sensor and the common combination of described crankshaft position sensor,
The cylinder completing described electromotor judges, it is characterized in that, described electromotor also includes that valve position passes
Sensor, described valve position sensor is arranged on inlet valve and the aerofluxus of a certain cylinder of described electromotor
Near Men, and for the opening and closing of described inlet valve and described exhaust valve is detected, at described cam
When phase detector lost efficacy, described valve position sensor and described crankshaft position sensor can be utilized,
The cylinder completing described electromotor judges.
The electromotor of a second aspect of the present invention is the basis of the electromotor in a first aspect of the present invention
On, it is characterized in that, described valve position sensor is capable of detecting when that inlet valve opening and closing signal and exhaust valve are opened
Close signal, wherein, described inlet valve opening and closing signal have represent IO Intake Valve Opens IO Intake Valve Opens signal and
Representing the IC Intake Valve Closes signal of IC Intake Valve Closes, described exhaust valve opening and closing signal has expression exhauxt valve opens
Exhauxt valve opens signal and represent exhaust valve closing exhaust valve closing signal, described valve position passing
After sensor detects the rising edge of described exhauxt valve opens signal, the most just by described crankshaft position sensor
When any one hypodontia in described hypodontia being detected, exhaust valve is in open mode, and inlet valve is in closedown shape
State, described electromotor is in instroke, and determines the exhaust top dead center of 1# cylinder.
The electromotor of a third aspect of the present invention is the basis of the electromotor in a second aspect of the present invention
On, it is characterized in that, in the decline described IO Intake Valve Opens signal being detected by described valve position sensor
After Yan, when the most just any one hypodontia in described hypodontia being detected by described crankshaft position sensor, enter
Valve becomes closed mode from open mode, and exhaust valve is closed, and described electromotor is in pressure
Indention journey, and determine the compression top center of 1# cylinder.
The electromotor of a fourth aspect of the present invention is starting in a second aspect of the present invention or the third aspect
On the basis of machine, it is characterised in that the bent axle used in described electromotor is the bent axle of 60-2 type.
The electromotor of a fifth aspect of the present invention is the basis of the electromotor in a fourth aspect of the present invention
On, it is characterized in that, the trailing edge position of the 4th orthodont after any one hypodontia described is described 1#
The exhaust top dead center of cylinder or the compression top center of described 1# cylinder.
The electromotor of a sixth aspect of the present invention is the basis of the electromotor in a fourth aspect of the present invention
On, it is characterized in that, the trailing edge of described exhauxt valve opens signal and the rising of described IO Intake Valve Opens signal
Along the position being positioned at same tooth.
The electromotor of a seventh aspect of the present invention is the basis of the electromotor in a fourth aspect of the present invention
On, it is characterized in that, described electromotor has 1# cylinder, 2# cylinder, 3# cylinder and 4# cylinder, described electromotor
The combustion order of cylinder is 1#-3#-4#-2# or 1#-2#-4#-3#.
The cylinder decision method of a eighth aspect of the present invention can be in a first aspect of the present invention to the 7th aspect
In either side electromotor in carry out cylinder judgement, it is characterized in that, at described valve position sensor
First detect described exhauxt valve opens signal rising edge and after song detected by described crankshaft position sensor
The signal of any one hypodontia in the hypodontia of axle is immediately preceding the signal of the rising edge of described exhauxt valve opens signal
In the case of afterwards, it is determined that the exhaust top dead center of 1# cylinder, institute first detected at described valve position sensor
State IO Intake Valve Opens signal trailing edge and after detected by described crankshaft position sensor in the hypodontia of bent axle
Situation after the signal of the trailing edge of described IO Intake Valve Opens signal of the signal of any one hypodontia
Under, it is determined that the compression top center of 1# cylinder, the hypodontia of bent axle is formerly detected by described crankshaft position sensor
In any one hypodontia or after any one in the hypodontia of bent axle detected by described crankshaft position sensor
The signal of hypodontia is not immediately preceding rising edge or the described IO Intake Valve Opens signal of described exhauxt valve opens signal
Trailing edge signal after in the case of, sentence cylinder failure, and again carry out described cylinder decision method.
Electromotor according to the present invention and cylinder decision method, even if making electromotor because of some fault
Cam phase sensor is in inefficacy, as long as crankshaft position sensor is still in normal work, just can utilize institute
Stating valve position sensor and described crankshaft position sensor, the cylinder completing described electromotor judges.
Particularly, described valve position sensor and described crankshaft position sensor is being utilized to start
When the cylinder of machine judges, due to pressure transducer not by position limitation, may be installed inlet manifold, therefore,
Reliability is high, simultaneously, it is determined that logic is simple, accordingly, it is capable to while ensureing reliability, it is achieved efficiently,
Quickly sentence cylinder.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the structure of the electromotor representing embodiment of the present invention.
Fig. 2 is to represent each sensor (cam phase sensing that the electromotor of embodiment of the present invention is had
Device, valve position sensor and crankshaft position sensor) signal and traveled distance between the figure of corresponding relation.
Fig. 3 is the flow chart of the cylinder determination flow performed by the electromotor representing embodiment of the present invention.
Fig. 4 is the figure of the variation representing embodiment of the present invention, and it is the figure corresponding with Fig. 2.
Fig. 5 is the figure of another variation representing embodiment of the present invention, and it is the figure corresponding with Fig. 2.
Detailed description of the invention
Structure and work hereinafter, with reference to Fig. 1 and Fig. 2, to the electromotor 100 of embodiment of the present invention
It is briefly described as principle.
As it is shown in figure 1, the electromotor 10 of embodiment of the present invention includes air inlet pipe 100, cylinder portion
200 and offgas duct 300.
Cam phase sensor CAMS, bent axle position it is provided with in the cylinder portion 200 of electromotor 10
Put sensor CAS and valve position sensor AVS, wherein, above-mentioned cam phase sensor CAMS
It is arranged near the cam of electromotor 10, for the phase place of cam is detected, above-mentioned crank position
Sensor CAS is arranged near the bent axle of electromotor 10, is also in for bent axle is positioned at orthodont
Hypodontia detects, and above-mentioned valve position sensor AVS is arranged near inlet valve and exhaust valve, and
For the position of inlet valve and exhaust valve (opening and closing) is detected.
Below, in conjunction with each sensor (cam phase sensor CAMS, the valve position sensor in Fig. 2
AVS and crankshaft position sensor CAS) signal, carry out the judgement of cylinder.
In embodiments of the present invention, the song of the bent axle e.g. 60-2 type used in electromotor 10
Axle, it has 58 teeth, and it is 6 ° that orthodont produces the crank angle of square wave, and hypodontia produces square wave
Crank angle is 18 °.
It addition, in the compression that trailing edge position is 1# cylinder or 4# cylinder of the 4th orthodont after hypodontia only
Point.Additionally, the combustion order of cylinder is " 1#-3#-4#-2# ".
First, it is generally the case that electromotor has only to utilize crankshaft position sensor and cam phase sensing
Both devices common combination, the cylinder location that just can be properly completed electromotor judges, but, because some event
Barrier, and makes cam phase sensor CAMS be in failure state, now, crankshaft position sensor CAS and
Valve position sensor AVS is in the state of normal work.
Valve position sensor AVS is capable of detecting when inlet valve opening and closing signal Int and exhaust valve opening and closing signal
Ext, wherein, above-mentioned inlet valve opening and closing signal Int has the IO Intake Valve Opens signal representing IO Intake Valve Opens
Int_o and the IC Intake Valve Closes signal Int_c, above-mentioned exhaust valve opening and closing signal Ext of expression IC Intake Valve Closes
There is the exhauxt valve opens signal Ext_o representing exhauxt valve opens and the exhaust valve closing representing exhaust valve closing
Signal Ext_c.
Crankshaft position sensor CAS be capable of detecting when bent axle orthodont signal NT and bent axle hypodontia signal MT1,
MT2。
It is under failure state at cam phase sensor CAMS, owing to crankshaft position sensor CAS can
Detect two bent axles hypodontia signal MT1, MT2, therefore, it is impossible to judge that cylinder is to stop in the aerofluxus of 1# cylinder
Point, or the exhaust top dead center of 4# cylinder.
In a working in reciprocating mode of cylinder, cylinder carries out air-breathing, compression, burning expansion, aerofluxus four successively
Individual stroke.
When cylinder carries out intake stroke, inlet valve is in open mode, and exhaust valve is closed,
When cylinder is exhausted stroke, inlet valve is closed, and exhaust valve is in open mode.It addition,
Being compressed and during burning expansion at cylinder, inlet valve and exhaust valve are in closed mode.
As in figure 2 it is shown, when table in exhaust valve opening and closing signal Int detected by valve position sensor AVS
After showing the rising edge Ext_o1 of exhauxt valve opens signal Ext_o of exhauxt valve opens, the most just by bent axle
When position sensor CAS detects a certain hypodontia (the most for example, MT1), at exhaust valve
In open mode, inlet valve is closed, now, it is known that electromotor is in instroke, the most permissible
Determine above-mentioned hypodontia MT1, and using the trailing edge position of the 4th orthodont after this hypodontia MT1 as 1#
The exhaust top dead center (or compression top center of 4# cylinder) of cylinder.
As in figure 2 it is shown, when table in inlet valve opening and closing signal Int detected by valve position sensor AVS
After showing the trailing edge Int_o2 of IO Intake Valve Opens signal Int_o of IO Intake Valve Opens, the most just by bent axle
When position sensor CAS detects a certain hypodontia (the most for example, MT2), inlet valve is
Become closed mode from open mode, and exhaust valve is closed, now, it is known that electromotor is in pressure
Indention journey, after determining above-mentioned hypodontia MT2, by the decline of the 4th orthodont after this hypodontia MT2
It it is the compression top center (or exhaust top dead center of 4# cylinder) of 1# cylinder along position.
By so, just two hypodontias MT1, MT2 being detected by crankshaft position sensor CAS can be entered
Row is distinguished, and judges that cylinder is the exhaust top dead center of 1# cylinder, or the exhaust top dead center of 4# cylinder.
When after the exhaust top dead center judging 1# cylinder, just can suitable according to default " 1#-3#-4#-2# "
Sequence, makes four cylinders be operated successively.
Then, with reference to Fig. 3 and combine Fig. 2, to the gas performed by the electromotor 10 of embodiment of the present invention
The flow chart of cylinder determination flow illustrates.
It is under failure state at cam phase sensor CAMS, whether crankshaft position sensor CAS is lost
Effect carries out judging (step S100).
If crankshaft position sensor CAS lost efficacy (being judged as "No" in step S100), then due to nothing
Method detects the position of bent axle hypodontia, therefore, it is impossible to carry out cylinder determination flow, and directly terminates this
Flow process (step S500).
Do not lost efficacy the situation of (being judged as "Yes" in step S100) at crankshaft position sensor CAS
Under, it is judged that whether valve position sensor AVS detects the rising edge of exhauxt valve opens signal Ext_o
Ext_o1 (step S200).
Valve position sensor AVS detect exhauxt valve opens signal Ext_o rising edge Ext_o1 (
Step S200 is judged as "Yes") in the case of, by the rising edge Ext_o1 of exhauxt valve opens signal Ext_o
Location records in memorizer (not shown) (step S210).
Then, crankshaft position sensor CAS detects hypodontia MT1 or the MT2 (step S220) of bent axle.
Then, to the signal of hypodontia MT1 or MT2 whether immediately preceding the rising of exhauxt valve opens signal Ext_o
Carry out judging (step S230) after the signal of Ext_o1.
If as in figure 2 it is shown, the signal of hypodontia MT1 is immediately preceding the rising edge of exhauxt valve opens signal Ext_o
(step S230 is judged as "Yes") after the signal of Ext_o1, it is determined that above-mentioned hypodontia MT1, and
Using the trailing edge position of the 4th orthodont after this hypodontia MT1 as the exhaust top dead center (step of 1# cylinder
S240), this flow process (step S500) is then terminated.
If the signal of hypodontia does not has the signal of the rising edge Ext_o1 immediately preceding exhauxt valve opens signal Ext_o
(step S230 is judged as "No") afterwards, then regards as sentencing cylinder failed (step S400), and again
Secondary carry out cylinder determination flow.
The rising edge of exhauxt valve opens signal Ext_o it is not detected by valve position sensor AVS
In the case of Ext_o1 (being judged as "No" in step s 200), it is judged that valve position sensor AVS
The trailing edge Int_o2 (step S300) of IO Intake Valve Opens signal Int_o whether detected.
Valve position sensor AVS detect IO Intake Valve Opens signal Int_o trailing edge Int_o2 (
Step S300 is judged as "Yes") in the case of, by the trailing edge Int_o2 of IO Intake Valve Opens signal Int_o
Location records in memorizer (not shown) (step S310).
Then, crankshaft position sensor CAS detects hypodontia MT1 or the MT2 (step S320) of bent axle.
It addition, be not detected by the trailing edge of IO Intake Valve Opens signal Int_o at valve position sensor AVS
In the case of Int_o2 (being judged as "No" in step S300), crankshaft position sensor CAS detects
Hypodontia MT1 or MT2 (step S320) to bent axle.
Then, to the signal of hypodontia MT1 or MT2 whether immediately preceding the decline of IO Intake Valve Opens signal Int_o
Carry out judging (step S330) after the signal of Int_o2.
If as in figure 2 it is shown, the signal of hypodontia MT2 is immediately preceding the trailing edge of IO Intake Valve Opens signal Int_o
(step S330 is judged as "Yes") after the signal of Int_o2, it is determined that above-mentioned hypodontia MT2, and
Using the trailing edge position of the 4th orthodont after this hypodontia MT2 as the exhaust pressure point reduction (step of 1# cylinder
S340), this flow process (step S500) is then terminated.
If the signal of hypodontia does not has the signal of the trailing edge Int_o2 immediately preceding IO Intake Valve Opens signal Int_o
(step S330 is judged as "No") afterwards, then regards as sentencing cylinder failed (step S400), and again
Secondary carry out cylinder determination flow.
Above in conjunction with accompanying drawing, the present invention is exemplarily described, it is clear that the present invention implements also
It is not limited to the embodiments described above.Those of ordinary skill in the art will be readily apparent other advantage and
Amendment.Therefore, in its wider range of aspect for, the present invention is not limited to depicted herein and retouched
The detail stated and representative embodiment.Therefore, it can without departing from such as appended claims and
On the premise of the spirit or scope of this general inventive concept that its equivalent is limited, various modification can be adapted.
Such as, in the above-described embodiment, as in figure 2 it is shown, the decline of exhauxt valve opens signal Ext_o
Rising edge Int_o1 along Ext_o2 Yu IO Intake Valve Opens signal Int_o is positioned at the position of same tooth, but this
Invention is not limited to this, both can make the trailing edge Ext_o2 of exhauxt valve opens signal Ext_o as shown in Figure 4
It is positioned at the position before the rising edge Int_o1 of IO Intake Valve Opens signal Int_o, it is also possible to as shown in Figure 5
The trailing edge Ext_o2 making exhauxt valve opens signal Ext_o is positioned at the rising of IO Intake Valve Opens signal Int_o
Along the position after Int_o1.
Such as, in the above-described embodiment, the combustion order of cylinder is " 1#-3#-4#-2# ",
But the present invention is not limited to this, it is possible to so that the combustion order of cylinder is " 1#-2#-4#-3# ".
Such as, in the above-described embodiment, the bent axle e.g. 60-2 type used in electromotor 10
Bent axle, but the present invention is not limited to this, it is possible to use the bent axle of 58+2 type.
Claims (8)
1. an electromotor (10), passes including the cam phase for detecting the phase place of cam
Sensor (CAMS) and be also in hypodontia (MT1, MT2) examine for bent axle being positioned at orthodont
The crankshaft position sensor (CAS) surveyed, can utilize described cam phase sensor (CAMS) and described
Crankshaft position sensor (CAS) both common combinations, the cylinder completing described electromotor judges,
It is characterized in that,
Described electromotor (10) also includes valve position sensor (AVS), and described valve position senses
Device (AVS) is arranged near inlet valve and the exhaust valve of a certain cylinder of described electromotor (10), and
For the opening and closing of described inlet valve and described exhaust valve is detected,
When described cam phase sensor (CAMS) was lost efficacy, described valve position sensor can be utilized
(AVS) cylinder and described crankshaft position sensor (CAS), completing described electromotor judges.
2. electromotor (10) as claimed in claim 1, it is characterised in that
Described valve position sensor (AVS) is capable of detecting when inlet valve opening and closing signal (Int) and exhaust valve
Opening and closing signal (Ext), wherein, described inlet valve opening and closing signal (Int) has expression IO Intake Valve Opens
IO Intake Valve Opens signal (Int_o) and the IC Intake Valve Closes signal (Int_c) of expression IC Intake Valve Closes, institute
State exhaust valve opening and closing signal (Ext) have represent exhauxt valve opens exhauxt valve opens signal (Ext_o) and
Represent the exhaust valve closing signal (Ext_c) of exhaust valve closing,
Described exhauxt valve opens signal (Ext_o) is being detected by described valve position sensor (AVS)
After rising edge (Ext_o1), the most just described lacking detected by described crankshaft position sensor (CAS)
During any one hypodontia (MT1) in tooth, exhaust valve is in open mode, and inlet valve is closed,
Described electromotor is in instroke, and determines the exhaust top dead center of 1# cylinder.
3. electromotor (10) as claimed in claim 2, it is characterised in that
Described IO Intake Valve Opens signal (Int_o) is being detected by described valve position sensor (AVS)
After trailing edge (Int_o2), the most just described lacking detected by described crankshaft position sensor (CAS)
During any one hypodontia (MT2) in tooth, inlet valve becomes closed mode from open mode, and exhaust valve
Being closed, described electromotor is in compression travel, and determines the compression top center of 1# cylinder.
4. electromotor (10) as claimed in claim 2 or claim 3, it is characterised in that
Bent axle used in described electromotor (10) is the bent axle of 60-2 type.
5. electromotor (10) as claimed in claim 4, it is characterised in that
The trailing edge position of the 4th orthodont after described any one hypodontia (MT2) is described 1# cylinder
Exhaust top dead center or the compression top center of described 1# cylinder.
6. electromotor (10) as claimed in claim 4, it is characterised in that
The trailing edge (Ext_o2) of described exhauxt valve opens signal (Ext_o) is believed with described IO Intake Valve Opens
The rising edge (Int_o1) of number (Int_o) is positioned at the position of same tooth.
7. electromotor (10) as claimed in claim 4, it is characterised in that
Described electromotor (10) has 1# cylinder, 2# cylinder, 3# cylinder and 4# cylinder,
The combustion order of the cylinder of described electromotor (10) is 1#-3#-4#-2# or 1#-2#-4#-3#.
8. one kind carries out cylinder judgement in the electromotor (10) any one of claim 1 to 7
Cylinder decision method, it is characterised in that
Described exhauxt valve opens signal (Ext_o) is first detected at described valve position sensor (AVS)
Rising edge (Ext_o1) and after by described crankshaft position sensor (CAS) detect bent axle hypodontia (MT1,
The signal of any one hypodontia (MT1) in MT2) is immediately preceding described exhauxt valve opens signal (Ext_o)
In the case of after the signal of rising edge (Ext_o1), it is determined that the exhaust top dead center of 1# cylinder,
Described IO Intake Valve Opens signal (Int_o) is first detected at described valve position sensor (AVS)
Trailing edge (Int_o2) and after by described crankshaft position sensor (CAS) detect bent axle hypodontia (MT1,
The signal of any one hypodontia (MT2) in MT2) is immediately preceding described IO Intake Valve Opens signal (Int_o)
In the case of after the signal of trailing edge (Int_o2), it is determined that the compression top center of 1# cylinder,
Formerly detected by described crankshaft position sensor (CAS) in the hypodontia (MT1, MT2) of bent axle
Any one hypodontia or after by described crankshaft position sensor (CAS) detect bent axle hypodontia (MT1,
The signal of any one hypodontia in MT2) is not immediately preceding the rising of described exhauxt valve opens signal (Ext_o)
Along (Ext_o1) or described IO Intake Valve Opens signal (Int_o) trailing edge (Int_o2) signal it
In the case of Hou, sentence cylinder failure, and again carry out described cylinder decision method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108415.5A CN106032761A (en) | 2015-03-12 | 2015-03-12 | An engine and an air cylinder determination method used for performing air cylinder determination in the engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108415.5A CN106032761A (en) | 2015-03-12 | 2015-03-12 | An engine and an air cylinder determination method used for performing air cylinder determination in the engine |
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| Publication Number | Publication Date |
|---|---|
| CN106032761A true CN106032761A (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510108415.5A Pending CN106032761A (en) | 2015-03-12 | 2015-03-12 | An engine and an air cylinder determination method used for performing air cylinder determination in the engine |
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| CN (1) | CN106032761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397304A (en) * | 2018-03-29 | 2018-08-14 | 刘方忠 | EFI SI engine jets igniting synchronisation control means under event-driven |
-
2015
- 2015-03-12 CN CN201510108415.5A patent/CN106032761A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397304A (en) * | 2018-03-29 | 2018-08-14 | 刘方忠 | EFI SI engine jets igniting synchronisation control means under event-driven |
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Application publication date: 20161019 |