CN113915013A - Engine timing synchronization method of special-shaped flywheel - Google Patents
Engine timing synchronization method of special-shaped flywheel Download PDFInfo
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- CN113915013A CN113915013A CN202111124502.1A CN202111124502A CN113915013A CN 113915013 A CN113915013 A CN 113915013A CN 202111124502 A CN202111124502 A CN 202111124502A CN 113915013 A CN113915013 A CN 113915013A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 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
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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
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- 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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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides an engine timing synchronization method of a special-shaped flywheel, which is characterized in that a crankshaft and an air inlet camshaft position sensor are pre-installed on an engine, a style combination set aiming at all style combinations of the special-shaped flywheel is pre-configured, and the engine is connected with an engine controller and comprises the following steps: step S1, the engine controller acquires a camshaft signal acquired by the intake camshaft position sensor after acquiring a crankshaft signal acquired by the crankshaft position sensor; step S2, the engine controller obtains a plurality of cam signal patterns and crank teeth numbers arranged according to time sequence according to the signal processing of the crank shaft and the cam shaft; and step S3, the engine controller matches each cam signal pattern and the crankshaft tooth number with the pattern combination set, and the timing synchronization is completed when the matching with one pattern combination is successful. The method has the advantages that the method can be applied to the flywheel with a special shape for timing synchronization, and the timing synchronization can be completed 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
Usually, the 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 the cylinder number of the engine, and accurately controlling the phase and time of oil injection, ignition and the like according to the information, common crankshaft tooth shapes include 60-2, 36-2 and the like, common cam tooth shapes include two long and two short, one long and one short, single long tooth and the like in different combinations.
The existing engine timing synchronization method is only suitable for single-tooth-lacking flywheel and common camshaft tooth form, the strategy cannot be used for flywheel signals with more teeth lacking or special pulse type camshaft signals, and the synchronization speed is low.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an engine timing synchronization method of a special-shaped flywheel, which is characterized in that a crankshaft position sensor and an air inlet camshaft position sensor are pre-installed on an engine, a style combination set aiming at all style combinations of the special-shaped flywheel is pre-configured, the engine is connected with an engine controller, and the method 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 processes the crankshaft signal and the camshaft signal to obtain a plurality of cam signal patterns arranged according to time sequence and corresponding crankshaft tooth numbers;
step S3, the engine controller matches each of the cam signal patterns arranged in time sequence and the corresponding crankshaft tooth number with the pattern combination set, and completes timing synchronization when each of the cam signal patterns and the corresponding crankshaft tooth number are successfully matched with one of the pattern combinations in the pattern combination set.
Preferably, the crankshaft mounted on the crankshaft position sensor is provided with 36 crankshaft teeth, wherein four missing teeth are included, the number of the crankshaft teeth is not greater than 36, and the missing teeth are used as the zero-degree position of the crankshaft.
Preferably, the step S2 includes:
step S21, the engine controller processes the crankshaft signal to obtain the tooth edge of the corresponding crankshaft tooth as the starting position of the crankshaft, and processes the camshaft signal to obtain the camshaft position at the current moment;
and step S22, after receiving the crankshaft signal, the engine controller continuously records the rotation process of the crankshaft and the camshaft and obtains each time-sequentially arranged cam signal pattern and the crankshaft tooth number experienced by the crankshaft corresponding to each cam signal pattern by combining the starting position and the camshaft position.
Preferably, after executing step S3, the method further includes:
and the engine controller obtains the crankshaft angle of the current moment relative to the zero-degree position according to the pattern combination, the starting position and a preset mapping relation which are successfully matched.
Preferably, the engine controller provides a configuration window for external input of the set of pattern combinations.
Preferably, in step S2, a plurality of cam shaft teeth are provided on the camshaft, each cam shaft tooth is divided into a plurality of cam shaft tooth intervals formed by different numbers of cam shaft teeth, and the engine controller processes the crankshaft signal and each cam shaft tooth interval to obtain the cam signal pattern and the corresponding crankshaft tooth number.
Preferably, each of said cam signal patterns and corresponding number of said crankshaft teeth comprises:
a first signal pattern, at the beginning of identification, from the camshaft position to a rising edge of a first one of the camshaft teeth, the crankshaft experiencing the crankshaft tooth count of no more than 3;
a second signal pattern, at the beginning of identification, the crankshaft experiencing the crankshaft teeth count greater than 3 from the camshaft position to the rising edge of the first camshaft;
a third signal pattern, wherein the number of the crankshaft teeth experienced by the crankshaft is a first preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
a fourth signal pattern, wherein the number of the crankshaft teeth experienced by the crankshaft is a second preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
a fifth signal pattern, wherein the number of the crankshaft teeth experienced by the crankshaft is a third preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
and in a sixth signal mode, from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval, the number of the crankshaft teeth experienced by the crankshaft is a fourth preset value.
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 an externally input modification instruction.
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 in chronological order after the first signal pattern;
a second pattern combination, which is one of the third signal pattern, the fourth signal pattern and the fifth signal pattern after the first signal pattern is subjected to twice in time sequence;
a third pattern combination, which is subjected to one of the fourth signal pattern, the fifth signal pattern and the first signal pattern after being subjected to the first signal pattern three times in time sequence;
a fourth pattern combination that is chronologically passed through the third signal pattern after being passed through the second signal pattern;
a fifth pattern combination that sequentially experiences the first signal pattern and the sixth signal pattern in chronological order after experiencing the second signal pattern;
a sixth pattern combination that sequentially passes through the first signal pattern and the fourth signal pattern twice after passing through the second signal pattern in chronological order;
and a seventh pattern combination that passes the first signal pattern three times in chronological order after passing the second signal pattern.
The technical scheme has the following advantages or beneficial effects: the method can be applied to the timing synchronization of the flywheel with a special shape, and the timing synchronization can be completed when any pattern combination is identified, so that the timing synchronization speed is effectively improved.
Drawings
FIG. 1 is a flow chart of 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 a preferred embodiment of the present invention;
FIG. 3 is a flowchart illustrating the detailed procedure of step S2 according to the preferred embodiment of the present invention;
FIG. 4 is a tree diagram of pattern assembly sets starting with a first signal pattern in accordance with a preferred embodiment of the present invention;
FIG. 5 is a tree diagram of pattern assembly set starting with the second signal pattern in accordance with the preferred embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.
In a preferred embodiment of the present invention, based on the above problems in the prior art, there is provided an engine timing synchronization method for a flywheel with a special shape, wherein a crankshaft 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 with a special shape is pre-configured, and the engine is connected to an engine controller, as shown in fig. 1, and specifically includes the following steps:
step S1, the engine controller obtains the crank signal collected by the crank position sensor in the running process of the engine and obtains the camshaft signal collected by the intake camshaft position sensor after obtaining the crank signal;
step S2, the engine controller processes the crankshaft signal and the camshaft signal to obtain a plurality of cam signal patterns arranged according to time sequence and corresponding crankshaft tooth numbers;
and step S3, the engine controller matches each cam signal pattern arranged according to time sequence and the corresponding crankshaft tooth number with the pattern combination set, and the timing synchronization is completed when each cam signal pattern and the corresponding crankshaft tooth number are successfully matched with one of the pattern combinations of the pattern combination set.
Specifically, in the embodiment, aiming at the currently common tooth-lacking cam signal determination method, trial injection rotating speed determination method and manifold pressure determination method for engine timing synchronization, the tooth-lacking cam signal determination method is only suitable for a single tooth-lacking flywheel and a common camshaft tooth form, the strategy cannot be used for a flywheel signal with more teeth or a special pulse type camshaft signal, the trial injection rotating speed determination method does not need a camshaft signal, but the timing synchronization speed is low, the emission is influenced by the fuel failed in trial injection, the manifold pressure determination method does not need a camshaft signal, but is only suitable for the engine with an independent intake manifold arrangement framework, and the timing synchronization speed is low, so that the method utilizes a crankshaft signal and the camshaft signal of the special-shaped flywheel to perform timing synchronization, sets all cam pattern combinations of the special-shaped flywheel, and can complete timing synchronization when one of the cam pattern combinations is identified, the timing synchronization speed is improved.
In a preferred embodiment of the present invention, as shown in fig. 2, 36 crankshaft teeth are provided on the crankshaft 1 mounted on the crankshaft position sensor, wherein four missing teeth are included, so that the number of the crankshaft teeth is not greater than 36, and the missing teeth are used as the zero degree position of the crankshaft 1.
Specifically, in the present embodiment, the angle of the engine is from 0 degree to 720 degrees, during the operation of the engine, the crankshaft signal needs to go through two cycles, and the camshaft signal needs to go through one cycle, so the position of the missing tooth is usually 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 tooth edge of the corresponding crank tooth according to the crank signal processing and takes the tooth edge as the starting position of the crank 1, and obtains the camshaft position at the current moment according to the camshaft signal processing;
in step S22, the engine controller receives the crankshaft signal, continuously records the rotation process of the crankshaft 1 and the camshaft 2, and obtains the cam signal patterns arranged in time sequence and the crankshaft teeth number corresponding to the cam signal patterns by combining the starting position and the camshaft position.
Specifically, in the present embodiment, when a tooth edge of one crankshaft tooth is monitored, a cam signal pattern recognition strategy is performed, the rotation processes of the crankshaft 1 and the camshaft 2 are recorded, and each cam signal pattern arranged in time sequence and the corresponding number of crankshaft teeth are obtained by combining the starting position and the camshaft position.
In a preferred embodiment of the present invention, after the step S3 is executed, the method further includes:
and the engine controller obtains the crankshaft angle of the current moment relative to the zero-degree position according to the successfully matched pattern combination, the starting position and a preset mapping relation.
Specifically, in this embodiment, after executing the cam signal pattern recognition strategy, the computer terminal obtains each cam signal pattern arranged in time sequence and the corresponding number of teeth of the crankshaft, and directly obtains the angle of the engine through a mapping relationship, where the mapping relationship is set for the pattern combination set of all the pattern combinations of the flywheel having the 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 combination set is input externally by the operator, when the flywheel with a special shape is subjected to timing synchronization after the pattern combination set is input, the engine controller does not need to input the pattern combination set again, and when another flywheel with a special shape is required to be subjected to timing synchronization, the operator can output another corresponding pattern combination set.
In a 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 intervals composed of different numbers of camshaft teeth, and the engine controller processes the camshaft tooth intervals according to the crankshaft signal to obtain the cam signal pattern and the corresponding crankshaft tooth number.
Specifically, in this embodiment, each camshaft tooth region on the specially-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 number of crankshaft teeth comprises:
a first signal pattern S, at the beginning of identification, from the camshaft position to the rising edge of the first camshaft tooth, the number of crankshaft teeth experienced by the crankshaft is not more than 3;
a second signal pattern L, at the beginning of the identification, from the camshaft position to the rising edge of the first camshaft tooth, the number of crankshaft teeth experienced by the crankshaft is greater than 3;
a third signal pattern L1, where the number of crankshaft teeth experienced by the crankshaft is the first preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
a fourth signal pattern L2, where the number of crankshaft teeth experienced by the crankshaft is a second preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
a fifth signal pattern L3, where the number of crankshaft teeth experienced by the crankshaft is a third preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
in the sixth signal pattern L4, the number of crankshaft teeth experienced by the crankshaft from the edge of the previous camshaft tooth interval to the edge of the next camshaft tooth interval is the fourth preset value.
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 command inputted 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 actual conditions.
In a preferred embodiment of the present invention, as shown in fig. 4 and 5, the pattern combination set includes:
a first pattern combination, which is one of the third signal pattern L1, the fourth signal pattern L2, the fifth signal pattern L5 and the sixth signal pattern L4 in chronological order after the first signal pattern S;
a second pattern combination which is subjected to one of the third signal pattern L1, the fourth signal pattern L2 and the fifth signal pattern L3 in time sequence after being subjected to the first signal pattern S twice;
a third pattern combination which is subjected to one of a fourth signal pattern L2, a fifth signal pattern L3, and the first signal pattern S in chronological order after being subjected to the first signal pattern S three times;
a fourth pattern combination chronologically succeeding the second signal pattern L and then succeeding the third signal pattern L1;
a fifth pattern combination that sequentially goes through the first signal pattern S and the sixth signal pattern L4 in chronological order after going through the second signal pattern L;
a sixth pattern combination that sequentially goes through the first signal pattern S and the fourth signal pattern L2 two times after going through the second signal pattern L in chronological order;
and a seventh pattern combination, which is subjected to the first signal pattern S three times after being subjected to the second signal pattern L in chronological order.
Specifically, in the present embodiment, the first pattern combination further includes a third signal pattern L1 or a sixth signal pattern L4 after experiencing the first signal pattern S, and then experiences the third signal pattern L1 or the first signal pattern S.
Preferably, the timing synchronization for this particular flywheel configuration is performed in the worst case cycle, i.e., in the first pattern combination, after the first signal pattern S, the sixth signal pattern L4 is passed, and then the third signal pattern L1 is passed.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. An engine timing synchronization method of a special-shaped flywheel 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 special-shaped flywheel is pre-configured, and the engine is connected with an engine controller, and the method 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 processes the crankshaft signal and the camshaft signal to obtain a plurality of cam signal patterns arranged according to time sequence and corresponding crankshaft tooth numbers;
step S3, the engine controller matches each of the cam signal patterns arranged in time sequence and the corresponding crankshaft tooth number with the pattern combination set, and completes timing synchronization when each of the cam signal patterns and the corresponding crankshaft tooth number are successfully matched with one of the pattern combinations in the pattern combination set.
2. The engine timing synchronization method according to claim 1, wherein the crankshaft position sensor is mounted on a crankshaft having 36 crankshaft teeth, four of which are missing, and the number of the crankshaft teeth is not greater than 36, and the missing teeth are taken as a zero degree position of the crankshaft.
3. The engine timing synchronization method according to claim 2, characterized in that said step S2 includes:
step S21, the engine controller processes the crankshaft signal to obtain the tooth edge of the corresponding crankshaft tooth as the starting position of the crankshaft, and processes the camshaft signal to obtain the camshaft position at the current moment;
and step S22, after receiving the crankshaft signal, the engine controller continuously records the rotation process of the crankshaft and the camshaft and obtains each time-sequentially arranged cam signal pattern and the crankshaft tooth number experienced by the crankshaft corresponding to each cam signal pattern by combining the starting position and the camshaft position.
4. The engine timing synchronization method according to claim 3, further comprising, after executing said step S3:
and the engine controller obtains the crankshaft angle of the current moment relative to the zero-degree position according to the pattern combination, the starting position and a preset mapping relation which are successfully matched.
5. The engine timing synchronization method of claim 1, wherein said engine controller provides a configuration window for external input of said pattern combination set.
6. The engine timing synchronization method according to claim 3, wherein a plurality of cam shaft teeth are provided on the camshaft, each cam shaft tooth is divided into a plurality of cam shaft tooth intervals consisting of different numbers of cam shaft teeth, and the engine controller processes the cam signal pattern and the corresponding crank shaft tooth number according to the crank signal and each cam shaft tooth interval.
7. The engine timing synchronization method of claim 6, wherein each said cam signal pattern and corresponding said crankshaft tooth number comprises:
a first signal pattern, at the beginning of identification, from the camshaft position to a rising edge of a first one of the camshaft teeth, the crankshaft experiencing the crankshaft tooth count of no more than 3;
a second signal pattern, at the beginning of identification, from the camshaft position to a rising edge of a first camshaft tooth, the number of crankshaft teeth experienced by the crankshaft is greater than 3;
a third signal pattern, wherein the number of the crankshaft teeth experienced by the crankshaft is a first preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
a fourth signal pattern, wherein the number of the crankshaft teeth experienced by the crankshaft is a second preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
a fifth signal pattern, wherein the number of the crankshaft teeth experienced by the crankshaft is a third preset value from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval;
and in a sixth signal mode, from the edge of the previous cam shaft tooth interval to the edge of the next cam shaft tooth interval, the number of the crankshaft teeth experienced by the crankshaft is a fourth preset value.
8. The engine timing synchronization method according to claim 7, wherein 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 command inputted from an outside.
9. The engine timing synchronization method according to 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 in chronological order after the first signal pattern;
a second pattern combination, which is one of the third signal pattern, the fourth signal pattern and the fifth signal pattern after the first signal pattern is subjected to twice in time sequence;
a third pattern combination, which is subjected to one of the fourth signal pattern, the fifth signal pattern and the first signal pattern after being subjected to the first signal pattern three times in time sequence;
a fourth pattern combination that is chronologically passed through the third signal pattern after being passed through the second signal pattern;
a fifth pattern combination that sequentially experiences the first signal pattern and the sixth signal pattern in chronological order after experiencing the second signal pattern;
a sixth pattern combination that sequentially passes through the first signal pattern and the fourth signal pattern twice after passing through the second signal pattern in chronological order;
and a seventh pattern combination that passes the first signal pattern three times in chronological order after passing the second signal pattern.
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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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| 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 |
-
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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