KR101682341B1 - Camshaft arrangement of a reciprocating piston internal combustion engine and a reciprocating piston internal combustion engine having such a camshaft arrangement - Google Patents
Camshaft arrangement of a reciprocating piston internal combustion engine and a reciprocating piston internal combustion engine having such a camshaft arrangement Download PDFInfo
- Publication number
- KR101682341B1 KR101682341B1 KR1020167013531A KR20167013531A KR101682341B1 KR 101682341 B1 KR101682341 B1 KR 101682341B1 KR 1020167013531 A KR1020167013531 A KR 1020167013531A KR 20167013531 A KR20167013531 A KR 20167013531A KR 101682341 B1 KR101682341 B1 KR 101682341B1
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- KR
- South Korea
- Prior art keywords
- transmission wheel
- combustion engine
- internal combustion
- camshaft
- reciprocating piston
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The present invention relates to a reciprocating piston internal combustion engine camshaft device having at least one phase-adjustable intake camshaft and at least one phase-adjustable exhaust camshaft, and a reciprocating piston internal combustion engine having a camshaft device of this type. SUMMARY OF THE INVENTION It is an object of the present invention to provide an internal combustion engine having at least one phase-adjustable intake camshaft and phase adjustment capable of ensuring a quick start function of a reciprocating piston internal combustion engine, being economically feasible, and at the same time, A camshaft device having a reciprocating piston internal combustion engine having at least one exhaust cam shaft as possible, and a reciprocating piston internal combustion engine having the above type of camshaft device. In a camshaft device according to the invention for a reciprocating piston internal combustion engine having at least one phase-adjustable intake camshaft and at least one phase-adjustable exhaust camshaft, the quick-start transmission wheel unit 10) is assigned to the precision transmission wheel unit 20 and the precision transmission wheel unit 20 is assigned to the phase adjustable intake camshaft and the precision transmission wheel unit 20 has a higher resolution than the quick start transmission wheel unit 10. [
Description
The present invention relates to a reciprocating piston internal combustion engine camshaft device having at least one phase-adjustable intake camshaft and at least one phase-adjustable exhaust camshaft, and a reciprocating piston internal combustion engine having such a camshaft device.
DE 195 27 503 A1 discloses a method for detecting the angular position of a crankshaft and a camshaft by a suitable sensor system in a reciprocating piston internal combustion engine. In this connection, in particular, reference is made to an arrangement of transmission wheels with assigned sensors. DE 195 27 503 A1 does not concern a reciprocating piston internal combustion engine with two camshafts, in particular a reciprocating piston internal combustion engine with two phase-adjustable camshafts.
From DE 10 2008 032 026 A1, a camshaft sensor unit for determining the absolute position of a camshaft of a reciprocating piston internal combustion engine having a transmission wheel is known. The transmit wheel is distributed over its periphery and includes a plurality of triggers that allow an angle recognition accuracy of less than 20 [deg.] NW (camshaft angle). DE 20 2008 032 026 A1 does not relate to a reciprocating piston internal combustion engine having two phase-adjustable camshafts.
In a reciprocating piston internal combustion engine having an intake camshaft and an exhaust camshaft, which are known from DE 101 56 780 A1, only the exhaust camshaft is configured to be phase-adjustable and a so-called quick start transmission wheel is assigned to the exhaust camshaft do. DE 101 56 780 A1 does not relate to a reciprocating piston internal combustion engine having two phase-adjustable camshafts.
SUMMARY OF THE INVENTION It is an object of the present invention to provide an internal combustion engine having at least one phase-adjustable intake camshaft and phase adjustment capable of ensuring a quick start function of a reciprocating piston internal combustion engine, being economically feasible, and at the same time, A camshaft device having a reciprocating piston internal combustion engine having at least one exhaust cam shaft, and a reciprocating piston internal combustion engine having the above-described camshaft device.
This problem is solved by the features of the independent claims in accordance with the invention.
In a camshaft device according to the present invention for a reciprocating piston internal combustion engine having one or more phase adjustable intake camshafts and phase adjustable at least one exhaust camshaft, a quick start transmission wheel unit is provided on at least one phase- A precision transmission wheel unit is assigned to the allocated, phase adjustable intake camshaft, and the precision transmission wheel unit has a higher resolution than the quick start transmission wheel unit.
In this regard, the quick start transmission wheel unit refers to a unit that generates a signal sequence that enables a clear allocation of the expansion stroke of each cylinder of the reciprocating piston internal combustion engine in relation to the signal sequence of the crankshaft sensor unit. This can be done in the case of a four-cylinder engine, especially when the combination of the signals of the quick start transmission wheel unit and the signals of the crankshaft sensor unit (for example, the detection of a tooth surface or other marker passing through the sensor) is clear have. Details thereof will be described in detail in connection with the embodiments.
In this regard, the quick start transmission wheel unit is particularly a combination of a quick-start transmission wheel including n 2 segments and a quick-start transmission wheel sensor interacting with the quick-start transmission wheel, Is configured to shorten the startup time of the reciprocating piston internal combustion engine by providing the quick start transmission wheel unit with reliable information about the exhaust valve position during the start-up process of the reciprocating piston internal combustion engine. This type of quick start transmission wheel unit is known in the prior art. The present invention is characterized in that the phase regulator of the intake camshaft and the exhaust camshaft is locked to definite reference positions in a known manner at the start of the reciprocating piston internal combustion engine so that the exhaust camshaft As well as the position of the intake camshaft are also ascertained.
Herein, the precision transmission wheel unit means a combination of a precision transmission wheel having n 1 segments and a precision transmission wheel sensor interacting therewith, the precision transmission wheel unit having a higher resolution than the quick start transmission wheel unit, During operation of the reciprocating piston internal combustion engine, it is configured to provide additional information regarding the degree of filling of the individual cylinders through an accurate determination of the closing timing of the intake valves relative to the intake camshaft position. This is done by continuous signal evaluation of the precision transmission wheel, especially with the precision transmission wheel sensor, during operation of the reciprocating piston internal combustion engine. Quot; higher resolution "means that the number of segments of the precision transmission wheel is greater than the number of corresponding quick-start transmission wheels. Thus, the rotation of the intake camshaft is "more disassembled" by the precision transmission wheel unit, i. E., Divided into smaller sections than by the quick start transmission wheel unit.
It is also contemplated that the quick start transmission wheel unit and the precision transmission wheel unit may be used for a variety of purposes, that is to say, on the one hand, that the quick start transmission wheel unit is configured such that the crankshaft of the reciprocating piston internal combustion engine And the precision transmission wheel unit on the other hand is used for the improvement of the charge detection during the operation of the reciprocating piston internal combustion engine. Thus, the precision transmission wheel is preferably divided into a plurality of segments of equal size in a uniform segmentation (the only exception being a fiducial marker, usually omitting or duplicating a segment), but the quickstart transmission wheel includes fewer segments , And usually has non-uniform segment segmentation. The quick start transmission wheel unit additionally enables the detection of the position of the exhaust camshaft during engine operation, which is of course less accurate than the precision transmission wheel unit.
The camshaft device according to the present invention is characterized in that the device of the precise transmission wheel unit is allocated to the phase adjustable intake camshaft and the quick start transmission wheel unit is allocated to the phase adjustable exhaust camshaft so that simultaneous quick start is possible High accuracy of the position detection of the intake camshaft is possible, which allows for more precise and more efficient injection and combustion in the reciprocating piston combustion engine in a plurality of operating states. Accordingly, the present invention is directed to a reciprocating piston internal combustion engine that involves phase adjustment (e.g., by a phase adjustable intake camshaft and a phase adjustable exhaust camshaft) Thereby realizing a desirable trade-off of cost.
As used herein, the term "segment" refers to each means for generating and detecting two or more different signals that enable position estimation. These means can be detected by means of a particularly geometrically recognizable element, a magnetic field and / or a known sensor (e. G., Such as convex and concave, i.e., teeth, gaps, It is an optical marker. Preferably, segments and sensors capable of distinguishing exactly two different states or signals (e.g., high / low or 0/1) are used.
In the embodiment of the camshaft device according to the present invention, each segment of the quick start transmission wheel and / or the precision transmission wheel is formed of a convex portion e and a concave portion v, (v) are connected to each other via a tooth surface F extending in the radial direction. The meaning of "extending in the radial direction " does not mean the extension direction to the radial direction alone. This expression may also include a direction of extension of the tooth surface F extending partially radially and partly in the circumferential direction. In the latter case, the extending direction can be distinguished by the convex portion e and the concave portion v, particularly when the convex portion e and the concave portion v extend only in the peripheral direction .
In a further embodiment of the camshaft device according to the invention, all the convex portions e and / or all the concave v of the quick start transmission wheel and / or the precision transmission wheel are provided on the rotation axis D of each camshaft, Are arranged on concentric circles centered on a circle. This has the advantage that the sensors towards the quick start transmission wheel and / or the precision transmission wheel in the radial direction must respectively detect a certain distance at the convex portion e as described above and the concave portion v as described above. Therefore, a sensor that can be provided in a simple and economical manner can be used.
In the camshaft device according to the present invention, it is more preferable that the segment number n 1 of the precision transmission wheel is at least (2 * n 2 -1). Preferably, the number of segments n 1 is (x * n 2 ), (x * n 2 +1) or (x * n 2 -1), where x is a positive integer and n 2 is a quick It is the number of segments of the start transmission wheel.
The value (x * n 2 +1) is a marker of one complete rotation of the precision transmission wheel when one segment of "standard size" is divided into two segments of half size, (E). ≪ / RTI >
The value (x * n 2 -1) is derived in the absence of the convexity e (the gap as a marker) as a marker of one complete rotation of the precision transmission wheel. The gap as a marker is particularly advantageous when the provided precision transmission wheel sensor is unable to release or reliably release additional markers at all, i.e., when the resolution of the precision transmission wheel sensor provided is already completely or entirely , It is preferable.
Value (x * n 2) it is derived in the case where more independent of the segments in the marking precision transmission wheel to be performed. Additional marking is particularly desirable if the additional marking can be reliably detected by the provided precision transmission wheel sensor.
In order to keep the manufacturing cost of the precision transmission wheel and the cost of the camshaft device according to the invention low, it may be desirable for the precision transmission wheel to have a larger outer diameter than the quick start transmission wheel. In this case, a precision transmission wheel with a higher resolution (i. E., More segments) is provided and a larger absolute tolerance value can be manufactured because the length of the convex and concave portions (usually circular sections) Because it grows longer as it expands.
The present invention also relates to a reciprocating piston internal combustion engine having a camshaft device as described above. In this regard, reference is made once again to the advantages already mentioned in connection with the camshaft device. Here, the concept of a "reciprocating piston internal combustion engine" refers specifically to a four-cylinder gasoline engine of an automobile. However, the present invention is not limited thereto, and may be used, for example, in a marine engine or an aircraft engine and a stationary engine in particular.
In another embodiment of the reciprocating piston internal combustion engine according to the present invention, the reciprocating piston internal combustion engine comprises z cylinders, wherein the number n 2 of segments of the quick
It is further preferred if the reciprocating piston internal combustion engine according to the present invention comprises a crankshaft to which its own crankshaft transmission wheel unit is assigned. A crankshaft transmission wheel unit of this type is preferably a transmission wheel having a plurality of teeth, protrusions and / or grooves uniformly distributed over its periphery, wherein the teeth, protrusions and / The higher the resolution, the better. Through the combination of the signal detected by the crankshaft transmission wheel unit and the signal detected by the quick start transmission wheel unit, the position of the crankshaft drive and control assembly of the reciprocating piston internal combustion engine (when the camshaft adjuster is locked) Can be clearly determined. This is possible through a combination of the signals of the quick start transmission wheel unit and the precision transmission wheel unit with lower accuracy (for example during emergency operation).
Preferably, the crankshaft, the at least one intake camshaft, and the at least one exhaust camshaft of the reciprocating piston internal combustion engine according to the present invention are connected to each other and are jointly driven via a common control assembly. This saves the synchronization of the separate drive units and this drive unit.
Advantages and other embodiments of the present invention are described with reference to the following drawings.
In Fig. 1, a quick start transmission wheel unit and a precision transmission wheel unit of a camshaft device according to the present invention are shown together with a precision transmission wheel unit of a crankshaft.
Figure 1 shows the axis of rotation of the crankshaft, not shown, of the in-line four-cylinder internal combustion engine (gasoline engine) (D K), the axis of rotation of an unillustrated exhaust cam shaft (D A) and the axis of rotation (D E) of the not-shown intake camshaft Are schematically shown.
The exhaust camshaft is coupled with a quick start
The intake camshaft is engaged with a precision
The crankshaft is engaged with a crankshaft
In the illustrated embodiment, the
In Fig. 1, the following dimensions are included.
d e1 : Diameter in the region of the convex portion (e) of the precision transmission wheel
d v1 : Diameter in the region of the concave portion (v) of the precision transmission wheel
d e2 : Diameter in the region of the convex portion (e) of the quick start transmission wheel (12)
d v2 : diameter in the region of the concave portion (v) of the quick start transmission wheel (12)
In the illustrated embodiment the following dimensions were used: d e1 = 80 mm, d v1 = 72 mm, d e2 = 60 mm. The dimension d v2 can be appropriately adjusted in accordance with the accuracy of the quick start
In the illustrated embodiment, the angles (?,?,?) Shown on the precision transmission wheel 22 in FIG. 1 are? = 25.5? (Appearing a total of 11),? = 10.5 4.5 [deg.] (Total 13 times, i.e., every convex section). Thus, the periphery of the precision transmission wheel 22 is divided into 11 segments each having an angle of 30 [deg.] And two segments each having an angle of 15 [deg.].
The features of the present invention disclosed in the specification, drawings, and claims of the present application may be important in various embodiments, either individually or in any combination, for the implementation of the present invention. The present invention is not limited to the above-described embodiments. The present invention may be modified within the scope of the claims and with a view to the knowledge of the ordinary artisan.
10: Quick start transmission wheel unit
12: Quick start transmission wheel
14: Quick start transmit wheel sensor
20: Precision transmission wheel unit
22: Precision transmission wheel
24: Precision transmission wheel sensor
30: Crankshaft transmission wheel unit
32: Crankshaft transmission wheel
34: Crankshaft transmission wheel sensor
36: Tooth
38: Gap gap
Claims (10)
The quick start transmission wheel unit 10 is assigned to the phase adjustable one or more exhaust camshafts, the precision transmission wheel unit 20 is assigned to the phase adjustable intake camshaft, the precision transmission wheel unit 20 is assigned to the quick start transmission And has a higher resolution than the wheel unit (10).
Characterized in that the number of segments (n 2 ) of the quick start transmission wheel (12) corresponds to an integral multiple of the number of cylinders (z).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013221638.6 | 2013-10-24 | ||
DE201310221638 DE102013221638A1 (en) | 2013-10-24 | 2013-10-24 | Camshaft arrangement of a Hubkolbenrennkraftmaschine and reciprocating internal combustion engine with such a camshaft assembly |
PCT/EP2014/071341 WO2015058953A1 (en) | 2013-10-24 | 2014-10-06 | Camshaft arrangement of a reciprocating piston internal combustion engine and a reciprocating piston internal combustion engine having such a camshaft arrangement |
Publications (2)
Publication Number | Publication Date |
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KR20160070156A KR20160070156A (en) | 2016-06-17 |
KR101682341B1 true KR101682341B1 (en) | 2016-12-12 |
Family
ID=51660500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020167013531A KR101682341B1 (en) | 2013-10-24 | 2014-10-06 | Camshaft arrangement of a reciprocating piston internal combustion engine and a reciprocating piston internal combustion engine having such a camshaft arrangement |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3017154B1 (en) |
KR (1) | KR101682341B1 (en) |
CN (1) | CN105658916B (en) |
DE (1) | DE102013221638A1 (en) |
RU (1) | RU2637798C2 (en) |
WO (1) | WO2015058953A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3085422B1 (en) | 2018-08-29 | 2020-11-27 | Continental Automotive France | REVERSIBLE CAMSHAFT TARGET |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011056833A1 (en) | 2011-12-21 | 2013-06-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train device for internal combustion engine, has cam elements that are provided with first and second transmitter wheels, and third torque-proof and axially fixed transmitter wheel which is located on basic camshaft |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4304163A1 (en) * | 1993-02-12 | 1994-08-25 | Bosch Gmbh Robert | Device for controlling fuel injection in an internal combustion engine |
DE19527503A1 (en) | 1995-07-27 | 1997-01-30 | Bosch Gmbh Robert | Electronic control system for an internal combustion engine |
US5715780A (en) * | 1996-10-21 | 1998-02-10 | General Motors Corporation | Cam phaser position detection |
DE19650250A1 (en) * | 1996-12-04 | 1998-06-10 | Bosch Gmbh Robert | Timing control for IC engine fuel injection and ignition |
DE19900641A1 (en) * | 1999-01-11 | 2000-01-27 | Siemens Ag | Arrangement for detecting rotation angle of camshaft of multicylinder internal combustion engine |
DE19946077A1 (en) * | 1999-09-25 | 2001-04-19 | Volkswagen Ag | Process for regulating the position of a camshaft and arrangement for carrying out the process |
US6474278B1 (en) | 2000-11-20 | 2002-11-05 | General Motors Corporation | Global cam sensing system |
DE10320046B4 (en) * | 2003-02-27 | 2014-03-20 | Robert Bosch Gmbh | Arrangement for determining the crankshaft position of a multi-cylinder internal combustion engine |
CN102359402B (en) * | 2003-03-29 | 2014-09-17 | 科尔本施密特皮尔博格创新有限公司 | Variable valve lift device for the lift adjustment of gas-exchange valves of an internal combustion engine |
DE102004001716A1 (en) * | 2004-01-13 | 2005-08-18 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
EP1809866B1 (en) * | 2004-09-24 | 2013-05-01 | Schaeffler Technologies AG & Co. KG | Device for adjusting the position of the angle of rotation of the camshaft of a reciprocating piston internal combustion engine in relation to the crankshaft |
DE102005016599A1 (en) * | 2005-04-11 | 2006-10-12 | Siemens Ag | Cam shaft transmitter wheel for camshaft sensor device, has camshaft sensor for engine, where partial angle ranges are formed such that they are distinguished from one another and each range comprises distinguishing characteristics |
JP4508215B2 (en) * | 2007-05-24 | 2010-07-21 | トヨタ自動車株式会社 | Control device for internal combustion engine |
DE102007054979A1 (en) * | 2007-11-17 | 2009-05-20 | Daimler Ag | Valve drive device |
DE102008032026A1 (en) | 2008-07-07 | 2010-01-14 | Schaeffler Kg | Cam shaft sensor unit for determining absolute position of cam shaft, has sensor wheel distributing multiple trigger fingers on circumference, where number of fingers determines angle recognition accuracy which is less than specific degree |
DE102008049103A1 (en) * | 2008-09-26 | 2010-04-01 | Daimler Ag | Valve train device, particularly for internal combustion engine, has two cam elements which are axially adjusted by shifting gate, and sensor unit |
-
2013
- 2013-10-24 DE DE201310221638 patent/DE102013221638A1/en not_active Withdrawn
-
2014
- 2014-10-06 CN CN201480058343.1A patent/CN105658916B/en active Active
- 2014-10-06 WO PCT/EP2014/071341 patent/WO2015058953A1/en active Application Filing
- 2014-10-06 RU RU2016108514A patent/RU2637798C2/en active
- 2014-10-06 KR KR1020167013531A patent/KR101682341B1/en active IP Right Grant
- 2014-10-06 EP EP14780879.4A patent/EP3017154B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011056833A1 (en) | 2011-12-21 | 2013-06-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train device for internal combustion engine, has cam elements that are provided with first and second transmitter wheels, and third torque-proof and axially fixed transmitter wheel which is located on basic camshaft |
Also Published As
Publication number | Publication date |
---|---|
DE102013221638A1 (en) | 2015-04-30 |
KR20160070156A (en) | 2016-06-17 |
CN105658916A (en) | 2016-06-08 |
CN105658916B (en) | 2018-10-19 |
RU2637798C2 (en) | 2017-12-07 |
RU2016108514A (en) | 2017-11-29 |
EP3017154B1 (en) | 2016-11-16 |
EP3017154A1 (en) | 2016-05-11 |
WO2015058953A1 (en) | 2015-04-30 |
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