CN113915013B - Engine timing synchronization method for flywheel with special shape - Google Patents
Engine timing synchronization method for flywheel with special shape Download PDFInfo
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- CN113915013B CN113915013B CN202111124502.1A CN202111124502A CN113915013B CN 113915013 B CN113915013 B CN 113915013B CN 202111124502 A CN202111124502 A CN 202111124502A CN 113915013 B CN113915013 B CN 113915013B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003909 pattern recognition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides an engine timing synchronization method of a special shape flywheel, a crankshaft and an air inlet cam shaft position sensor are pre-installed on an engine, a pattern combination set aiming at all pattern combinations of the special shape flywheel is pre-configured, and the engine is connected with an engine controller, comprising the following steps: step S1, an engine controller acquires a camshaft signal acquired by an intake camshaft position sensor after acquiring a crankshaft signal acquired by the crankshaft position sensor; s2, the engine controller obtains a plurality of cam signal patterns and crankshaft tooth numbers which are arranged in time sequence according to signal processing of a crankshaft and a camshaft; and step S3, the engine controller matches each cam signal pattern and the number of teeth of the crankshaft with the pattern combination set, and the timing synchronization is completed when the matching of one pattern combination is successful. The timing synchronization method has the advantages that the method can be applied to timing synchronization of the flywheel with the special shape, and can finish the timing synchronization when any pattern combination is identified, so that the timing synchronization speed is effectively improved.
Description
Technical Field
The invention relates to the technical field of engine synchronization, in particular to an engine timing synchronization method of a flywheel with a special shape.
Background
In general, engine timing synchronization is performed according to a crankshaft signal and a camshaft signal, and is mainly used for establishing an engine real-time angle system, judging the current stroke and cylinder number of the engine, and accurately controlling phases and time such as oil injection, ignition and the like according to the information, wherein common crankshaft tooth shapes are 60-2, 36-2 and the like, and common cam tooth shapes are different combinations of two lengths, one length, one long tooth and the like.
The existing engine timing synchronization method is only suitable for single-missing-tooth flywheels and common camshaft tooth shapes, and cannot be used for multi-missing-tooth flywheel signals or special pulse camshaft signals, so that the synchronization speed is low.
Disclosure of Invention
The invention provides an engine timing synchronization method of a flywheel with a special shape, aiming at the problems existing in the prior art, a crankshaft position sensor and an intake camshaft position sensor are pre-installed on an engine, a pattern combination set aiming at all pattern combinations of the flywheel with the special shape is pre-configured, and the engine is connected with an engine controller, and specifically comprises the following steps:
Step S1, the engine controller acquires a crankshaft signal acquired by the crankshaft position sensor in the running process of the engine and acquires a camshaft signal acquired by the intake camshaft position sensor after acquiring the crankshaft signal;
Step S2, the engine controller obtains a plurality of cam signal patterns and corresponding crank teeth numbers which are arranged in time sequence according to the crank shaft signals and the cam shaft signals;
And S3, the engine controller matches each cam signal pattern and the corresponding crank teeth number arranged in time sequence with the pattern combination set, and timing synchronization is completed when each cam signal pattern and the corresponding crank teeth number are successfully matched with one pattern combination of the pattern combination set.
Preferably, the crankshaft mounted on the crankshaft position sensor is provided with 36 crankshaft teeth, wherein the crankshaft teeth comprise four missing teeth, the number of the crankshaft teeth is not more than 36, and the missing teeth are used as zero degree positions of the crankshaft.
Preferably, the step S2 includes:
Step S21, the engine controller obtains the tooth edge of the corresponding crank tooth according to the crank signal processing and takes the tooth edge as the starting point position of the crank, and obtains the cam shaft position at the current moment according to the cam shaft signal processing;
And S22, continuously recording the rotation process of the crankshaft and the camshaft after the engine controller receives the crankshaft signals, and combining the starting position and the camshaft position to obtain each cam signal pattern arranged in time sequence and the number of crankshaft teeth experienced by the crankshaft corresponding to each cam signal pattern.
Preferably, after executing the step S3, the method further includes:
And the engine controller obtains the crank angle of the current moment relative to the zero-degree position according to the pattern combination successfully matched, the starting point position and a preset mapping relation.
Preferably, the engine controller provides a configuration window for external input of the pattern assembly set.
Preferably, in step S2, a plurality of camshaft teeth are disposed on the camshaft, each of the camshaft teeth is divided into a plurality of camshaft tooth sections composed of different numbers of camshaft teeth, and the engine controller obtains the cam signal pattern and the corresponding number of crankshaft teeth according to the processing of the crankshaft signal and each of the camshaft tooth sections.
Preferably, each of the cam signal patterns and the corresponding number of teeth of the crankshaft include:
A first signal pattern, at the beginning of recognition, from the camshaft position to a rising edge of a first camshaft tooth, the crankshaft experiencing the crankshaft number of teeth no greater than 3;
a second signal pattern, at the beginning of the identification, from the camshaft position to a rising edge of a first camshaft, the crankshaft experiencing the crankshaft having the crankshaft number of teeth greater than 3;
a third signal pattern, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of the crankshaft teeth experienced by the crankshaft is a first preset value;
a fourth signal pattern, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of the crankshaft teeth experienced by the crankshaft is a second preset value;
A fifth signal pattern, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of the crankshaft teeth experienced by the crankshaft is a third preset value;
And a sixth signal pattern, wherein the number of crankshaft teeth undergone by the crankshaft is a fourth preset value from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval.
Preferably, the engine controller sets the values of the first preset value, the second preset value, the third preset value and the fourth preset value according to a modification instruction input from the outside.
Preferably, the style combination set includes:
a first pattern combination that is one of the third signal pattern, the fourth signal pattern, the fifth signal pattern, and the sixth signal pattern experienced after the first signal pattern is experienced in chronological order;
a second pattern combination, which is one of the third signal pattern, the fourth signal pattern and the fifth signal pattern after undergoing the first signal pattern twice in time sequence;
A third pattern combination, which is one of the fourth signal pattern, the fifth signal pattern and the first signal pattern after three times of the first signal pattern are experienced in time sequence;
a fourth pattern combination chronologically undergoing the third signal pattern after undergoing the second signal pattern;
A fifth pattern combination chronologically undergoing the first signal pattern and the sixth signal pattern sequentially after undergoing the second signal pattern;
a sixth pattern combination of sequentially passing the first signal pattern and the fourth signal pattern twice after passing the second signal pattern in time sequence;
A seventh pattern combination is chronologically the first signal pattern is experienced three times after the second signal pattern is experienced.
The technical scheme has the following advantages or beneficial effects: the method can be applied to timing synchronization of the flywheel with the special shape, and can finish the timing synchronization when any pattern combination is identified, so that the timing synchronization speed is effectively improved.
Drawings
FIG. 1 is a flow chart showing the steps of the method according to the preferred embodiment of the present invention;
FIG. 2 is a schematic illustration of a crankshaft and an intake camshaft in accordance with a preferred embodiment of the present invention;
FIG. 3 is a flowchart showing the steps S2 in a preferred embodiment of the present invention;
FIG. 4 is a tree diagram of a pattern assembly set starting with a first signal pattern in a preferred embodiment of the present invention;
fig. 5 is a tree diagram of a pattern assembly set starting with a second signal pattern in a preferred embodiment of the present invention.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present invention is not limited to the embodiment, and other embodiments may fall within the scope of the present invention as long as they conform to the gist of the present invention.
In a preferred embodiment of the present invention, based on the above-mentioned problems existing in the prior art, there is now provided an engine timing synchronization method for a flywheel of a special shape, in which a crank shaft position sensor and an intake camshaft position sensor are pre-installed on an engine, a pattern combination set for all pattern combinations of the flywheel of the special shape is pre-configured, and the engine is connected to an engine controller, as shown in fig. 1, and specifically includes the steps of:
Step S1, an engine controller acquires a crankshaft signal acquired by a crankshaft position sensor during the running process of an engine and acquires a camshaft signal acquired by an intake camshaft position sensor after acquiring the crankshaft signal;
Step S2, the engine controller processes the signals of the crankshaft and the cam shaft to obtain a plurality of cam signal patterns and corresponding crankshaft tooth numbers which are arranged in time sequence;
and S3, matching each cam signal pattern and the corresponding crankshaft tooth number which are arranged in time sequence with a pattern combination set by the engine controller, and completing timing synchronization when one pattern combination of each cam signal pattern and the corresponding crankshaft tooth number and the pattern combination set is successfully matched.
Specifically, in this embodiment, for the conventional method for determining a missing tooth cam signal, the method for determining a pilot injection rotational speed, and the method for determining a manifold pressure, which are commonly used for timing synchronization of an engine at present, the missing tooth cam signal determining method is only applicable to a single missing tooth flywheel and a common cam shaft tooth shape, and the strategy cannot be used for a flywheel signal with multiple missing teeth or a special pulse type cam shaft signal, although the pilot injection rotational speed determining method does not need a cam shaft signal, the timing synchronization speed is low, fuel oil failing in pilot injection affects emission, the manifold pressure determining method does not need a cam shaft signal, but is only applicable to an engine with an independent intake manifold arrangement structure, and the timing synchronization speed is low.
In the preferred embodiment of the present invention, as shown in fig. 2, the crankshaft 1 on which the crank position sensor is mounted is provided with 36 crank teeth, wherein the crank teeth are not greater than 36 if four missing teeth are included, and the missing teeth are taken as zero-degree positions of the crankshaft 1.
Specifically, in this embodiment, the angle of the engine is from 0 degrees to 720 degrees, and during the operation of the engine, the crankshaft signal needs to undergo two circles, and the camshaft signal needs to undergo one circle, so the position of the missing tooth is generally taken as the zero-degree position of the engine, so as to facilitate the subsequent calculation of the engine angle.
In a preferred embodiment of the present invention, as shown in fig. 3, step S2 includes:
Step S21, the engine controller obtains the corresponding tooth edge of the crank teeth according to the crank signal processing and takes the tooth edge as the starting point position of the crank 1, and obtains the cam shaft position at the current moment according to the cam shaft signal processing;
In step S22, the engine controller continuously records the rotation process of the crankshaft 1 and the camshaft 2 after receiving the crankshaft signal, and obtains each time-sequence cam signal pattern and the number of crankshaft teeth experienced by the crankshaft corresponding to each cam signal pattern by combining the starting position and the camshaft position.
Specifically, in this embodiment, the cam signal pattern recognition strategy is performed when the tooth edge of one crank tooth is detected, the rotation processes of the crank shaft 1 and the cam shaft 2 are recorded, and each of the cam signal patterns arranged in time sequence and the number of crank teeth correspondingly experienced are obtained by combining the start position and the cam shaft position.
In a preferred embodiment of the present invention, after executing step S3, the method further includes:
and the engine controller obtains the crank angle of the current moment relative to the zero-degree position according to the pattern combination successfully matched, the starting point position and a preset mapping relation.
Specifically, in this embodiment, after executing the cam signal pattern recognition policy, the computer side may obtain each cam signal pattern and the corresponding crank tooth number arranged in time sequence, and directly obtain the angle of the engine through a mapping relationship, where the mapping relationship is set for a pattern combination set of all pattern combinations of the flywheel with a special shape, so as to ensure that the corresponding engine angle can be directly obtained for each pattern combination.
In a preferred embodiment of the present invention, the engine controller provides a configuration window for the external input pattern combination set.
Specifically, in this embodiment, the pattern assembly set is externally input by the operator, and when the timing synchronization is performed on the flywheel of the special shape after the pattern assembly set is input, the engine controller does not need to input the pattern assembly set again, and when the timing synchronization is required on the flywheel of another special shape, the operator can output another corresponding pattern assembly set.
In the preferred embodiment of the present invention, the camshaft 2 is provided with a plurality of camshaft teeth, each camshaft tooth is divided into a plurality of camshaft tooth sections composed of different numbers of camshaft teeth, and the engine controller processes the camshaft signals and each camshaft tooth section to obtain a cam signal pattern and a corresponding crankshaft tooth number.
Specifically, in the present embodiment, each camshaft tooth section on the special-shaped flywheel includes 1 camshaft tooth, 2 camshaft teeth, 3 camshaft teeth, and 4 camshaft teeth, respectively.
In a preferred embodiment of the present invention, each cam signal pattern and corresponding crankshaft tooth number comprises:
a first signal pattern S, from the camshaft position to the rising edge of the first camshaft tooth, the crankshaft experiencing a crankshaft number of teeth no greater than 3 at the beginning of the identification;
A second signal pattern L, at the beginning of recognition, from the camshaft position to the rising edge of the first camshaft tooth, the crankshaft experiencing a crankshaft tooth number greater than 3;
A third signal pattern L1, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of crankshaft teeth experienced by the crankshaft is a first preset value;
a fourth signal pattern L2, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of crankshaft teeth experienced by the crankshaft is a second preset value;
a fifth signal pattern L3, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of crankshaft teeth experienced by the crankshaft is a third preset value;
And a sixth signal pattern L4, wherein the number of crankshaft teeth experienced by the crankshaft is a fourth preset value from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval.
Specifically, in the present embodiment, the first signal pattern S may be included in the second signal pattern L.
In a preferred embodiment of the present invention, the engine controller sets the values of the first preset value, the second preset value, the third preset value and the fourth preset value according to a modification instruction input from the outside.
Specifically, in this embodiment, the operator may modify the first preset value, the second preset value, the third preset value, and the fourth preset value according to the actual situation.
In a preferred embodiment of the present invention, as shown in fig. 4 and 5, the style combination set includes:
The first pattern combination is one of a third signal pattern L1, a fourth signal pattern L2, a fifth signal pattern L5, and a sixth signal pattern L4 after undergoing the first signal pattern S in time sequence;
The second pattern combination is one of a third signal pattern L1, a fourth signal pattern L2 and a fifth signal pattern L3 after undergoing the first signal pattern S twice in time sequence;
the third pattern combination is one of a fourth signal pattern L2, a fifth signal pattern L3 and a first signal pattern S after three times of first signal patterns S are experienced in time sequence;
A fourth pattern combination chronologically of experiencing the third signal pattern L1 after experiencing the second signal pattern L;
A fifth pattern combination chronologically of sequentially undergoing the first signal pattern S and the sixth signal pattern L4 after undergoing the second signal pattern L;
a sixth pattern combination of sequentially undergoing the first signal pattern S and the fourth signal pattern L2 twice after undergoing the second signal pattern L in time sequence;
the seventh pattern combination is the first signal pattern S that is experienced three times after the second signal pattern L is experienced in time sequence.
Specifically, in the present embodiment, the first pattern combination further includes undergoing the third signal pattern L1 or the sixth signal pattern L4 after undergoing the first signal pattern S, and then undergoing the third signal pattern L1 or the first signal pattern S.
Preferably, upon timing synchronization for this particular shape flywheel, the synchronization appears as a worst-case completion of the synchronization within one revolution, and in the worst-case first pattern combination, the sixth signal pattern L4 is experienced after the first signal pattern S is experienced, and then the third signal pattern L1 is experienced.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and drawings, and are intended to be included within the scope of the present invention.
Claims (9)
1. An engine timing synchronization method of a flywheel with a special shape is characterized in that a crankshaft position sensor and an intake camshaft position sensor are pre-installed on an engine, a pattern combination set aiming at all pattern combinations of the flywheel with the special shape is pre-configured, and the engine is connected with an engine controller, and specifically comprises the following steps:
Step S1, the engine controller acquires a crankshaft signal acquired by the crankshaft position sensor in the running process of the engine and acquires a camshaft signal acquired by the intake camshaft position sensor after acquiring the crankshaft signal;
Step S2, the engine controller obtains a plurality of cam signal patterns and corresponding crank teeth numbers which are arranged in time sequence according to the crank shaft signals and the cam shaft signals;
And S3, the engine controller matches each cam signal pattern and the corresponding crank teeth number arranged in time sequence with the pattern combination set, and timing synchronization is completed when each cam signal pattern and the corresponding crank teeth number are successfully matched with one pattern combination of the pattern combination set.
2. The engine timing synchronization method according to claim 1, wherein the crank position sensor is mounted on a crank shaft having 36 crank teeth including four missing teeth, the crank teeth number is not more than 36, and the missing teeth are taken as zero degree positions of the crank shaft.
3. The engine timing synchronization method according to claim 2, characterized in that the step S2 includes:
Step S21, the engine controller obtains the tooth edge of the corresponding crank tooth according to the crank signal processing and takes the tooth edge as the starting point position of the crank, and obtains the cam shaft position at the current moment according to the cam shaft signal processing;
And S22, continuously recording the rotation process of the crankshaft and the camshaft after the engine controller receives the crankshaft signals, and combining the starting position and the camshaft position to obtain each cam signal pattern arranged in time sequence and the number of crankshaft teeth experienced by the crankshaft corresponding to each cam signal pattern.
4. The engine timing synchronization method according to claim 3, characterized by further comprising, after performing said step S3:
And the engine controller obtains the crank angle of the current moment relative to the zero-degree position according to the pattern combination successfully matched, the starting point position and a preset mapping relation.
5. The engine timing synchronization method of claim 1, wherein the engine controller provides a configuration window for external input of the pattern assembly set.
6. The engine timing synchronization method according to claim 3, wherein a plurality of camshaft teeth are provided on the camshaft, each of the camshaft teeth is divided into a plurality of camshaft tooth sections composed of a different number of camshaft teeth, and the engine controller processes the camshaft signal and each of the camshaft tooth sections to obtain the cam signal pattern and the corresponding number of crankshaft teeth.
7. The engine timing synchronization method of claim 6, wherein each of the cam signal patterns and the corresponding number of crankshaft teeth comprises:
A first signal pattern, at the beginning of recognition, from the camshaft position to a rising edge of a first camshaft tooth, the crankshaft experiencing the crankshaft number of teeth no greater than 3;
A second signal pattern, at the beginning of recognition, from the camshaft position to a rising edge of a first camshaft tooth, the crankshaft experiencing the crankshaft number of teeth greater than 3;
a third signal pattern, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of the crankshaft teeth experienced by the crankshaft is a first preset value;
a fourth signal pattern, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of the crankshaft teeth experienced by the crankshaft is a second preset value;
A fifth signal pattern, from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval, wherein the number of the crankshaft teeth experienced by the crankshaft is a third preset value;
And a sixth signal pattern, wherein the number of crankshaft teeth undergone by the crankshaft is a fourth preset value from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval.
8. The engine timing synchronization method according to claim 7, wherein the engine controller sets values of the first preset value, the second preset value, the third preset value, and the fourth preset value according to a modification instruction externally input.
9. The engine timing synchronization method of claim 7, wherein the pattern combination set includes:
a first pattern combination that is one of the third signal pattern, the fourth signal pattern, the fifth signal pattern, and the sixth signal pattern experienced after the first signal pattern is experienced in chronological order;
a second pattern combination, which is one of the third signal pattern, the fourth signal pattern and the fifth signal pattern after undergoing the first signal pattern twice in time sequence;
A third pattern combination, which is one of the fourth signal pattern, the fifth signal pattern and the first signal pattern after three times of the first signal pattern are experienced in time sequence;
a fourth pattern combination chronologically undergoing the third signal pattern after undergoing the second signal pattern;
A fifth pattern combination chronologically undergoing the first signal pattern and the sixth signal pattern sequentially after undergoing the second signal pattern;
a sixth pattern combination of sequentially passing the first signal pattern and the fourth signal pattern twice after passing the second signal pattern in time sequence;
A seventh pattern combination is chronologically the first signal pattern is experienced three times after the second signal pattern is experienced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111124502.1A CN113915013B (en) | 2021-09-24 | 2021-09-24 | Engine timing synchronization method for flywheel with special shape |
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| CN202111124502.1A CN113915013B (en) | 2021-09-24 | 2021-09-24 | Engine timing synchronization method for flywheel with special shape |
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| CN113915013A CN113915013A (en) | 2022-01-11 |
| CN113915013B true CN113915013B (en) | 2024-04-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6496750B1 (en) * | 1999-07-21 | 2002-12-17 | Hyundai Motor Company | System and method for processing crank angle signals |
| KR20060041544A (en) * | 2004-11-09 | 2006-05-12 | 현대자동차주식회사 | A method for alignment with crankshaft and camshaft of vehicle with a continuously variable valve timing system |
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| CN101984235A (en) * | 2010-09-21 | 2011-03-09 | 中国第一汽车集团公司 | Timing control system of diesel engine based on state machine and time processing unit (TPU) |
| CN103133169A (en) * | 2011-11-21 | 2013-06-05 | 联创汽车电子有限公司 | System and control method of engine position management |
| CN104747309A (en) * | 2013-12-26 | 2015-07-01 | 联创汽车电子有限公司 | Engine position management system and management method |
-
2021
- 2021-09-24 CN CN202111124502.1A patent/CN113915013B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6496750B1 (en) * | 1999-07-21 | 2002-12-17 | Hyundai Motor Company | System and method for processing crank angle signals |
| KR20060041544A (en) * | 2004-11-09 | 2006-05-12 | 현대자동차주식회사 | A method for alignment with crankshaft and camshaft of vehicle with a continuously variable valve timing system |
| KR20090062389A (en) * | 2007-12-13 | 2009-06-17 | 현대자동차주식회사 | Method for driving engine by position of crankshaft and camshaft |
| CN101984235A (en) * | 2010-09-21 | 2011-03-09 | 中国第一汽车集团公司 | Timing control system of diesel engine based on state machine and time processing unit (TPU) |
| CN103133169A (en) * | 2011-11-21 | 2013-06-05 | 联创汽车电子有限公司 | System and control method of engine position management |
| CN104747309A (en) * | 2013-12-26 | 2015-07-01 | 联创汽车电子有限公司 | Engine position management system and management method |
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| CN113915013A (en) | 2022-01-11 |
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