US20010018911A1 - System for identifying cylinder in engine - Google Patents
System for identifying cylinder in engine Download PDFInfo
- Publication number
- US20010018911A1 US20010018911A1 US09/751,336 US75133600A US2001018911A1 US 20010018911 A1 US20010018911 A1 US 20010018911A1 US 75133600 A US75133600 A US 75133600A US 2001018911 A1 US2001018911 A1 US 2001018911A1
- Authority
- US
- United States
- Prior art keywords
- cylinder
- engine
- stroke
- engine rpm
- electric current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
-
- 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
- F02P5/15—Digital data processing
- F02P5/1502—Digital data processing using one central computing unit
- F02P5/1506—Digital data processing using one central computing unit with particular means during starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
-
- 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
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
-
- 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
Definitions
- the present invention relates to a system for identifying a cylinder in an engine, and more particularly, to a system that is able to identify a cylinder in a 3-cylinder, 4-stroke engine without the use of a sensor mounted on a distributor, which is connected to a camshaft.
- the identification of a cylinder in an engine is used in controlling ignition timing and is typically performed by sensors. That is, with reference to FIG. 1, there is mounted an internal target wheel 11 of a distributor 10 connected to a crankshaft, and a crank angle sensor 12 for detecting a crank angle and a piston position sensor 13 for detecting a top dead center of a piston are mounted to read the internal target wheel 11 . Using outputs of the sensors 12 and 13 , identification of the cylinders is possible.
- a target wheel 21 is mounted to a crankshaft 20 and a crank angle sensor 22 for detecting a crank angle is mounted to read the target wheel 21 .
- a target wheel 24 is mounted on a camshaft 23 and a piston position sensor 25 is mounted to read the target wheel 24 . Using outputs of the sensors 22 and 25 , identification of the cylinders is possible.
- the present invention has been made in an effort to solve the above problems.
- the present invention provides a system for identifying a cylinder in an engine comprising means for applying an electric current every time a first cylinder of a 3-cylinder, 4-stroke engine is at a top dead center; means for detecting engine rpm when the current is applied; and control means for determining an exhaust stroke when the engine rpm do not increase, and for determining a compression stroke when the engine rpm abruptly increase, and sequentially providing ignition for a second cylinder and a third cylinder to operate the engine.
- the present invention provides a method for identifying a cylinder in an engine, comprising the steps of applying an electric current every time a first cylinder of a 3-cylinder, 4-stroke engine is at a top dead center; detecting engine rpm when the electric current is applied; and determining a type of a stroke of the engine according to the detected engine rpm.
- the type of the stroke is determined as an exhaust stroke, and when the engine rpm abruptly increase, the type of the stroke is determined as a compression stroke.
- the method further comprises the step of sequentially providing ignition for a second cylinder and a third cylinder to operate the engine.
- FIG. 1 is an internal front view of a distributor to which there are mounted conventional sensors for identifying a cylinder;
- FIG. 2 is a front view of a crankshaft to which there are mounted conventional sensors for identifying a cylinder;
- FIG. 3 is a longitudinal sectional view of a system for identifying a cylinder in an engine according to a preferred embodiment of the present invention
- FIG. 4 is a flow chart of operations of the system of FIG. 3.
- FIG. 5 is a timing chart of the system of FIG. 3.
- FIG. 3 is a longitudinal sectional view of a system for identifying a cylinder in an engine according to a preferred embodiment of the present invention.
- the system includes a distributor 30 for supplying a high-voltage current from a secondary coil of an ignition coil to each cylinder of a 3-cylinder, 4-stroke engine; a rotor 31 rotating together with a terminal, the terminal transmitting the high-voltage current to each cylinder; a sensor 32 for detecting rpm of the rotor 31 ; and an electronic control unit 33 for identifying a cylinder by output of the sensor 32 .
- the rotor 31 rotates to be positioned at different locations corresponding to a first cylinder or between the second and third cylinders.
- first cylinder is at the end of the compression stroke or the end of the exhaust stroke since there is no camshaft sensor.
- a secondary electric power of the ignition coil is applied during each stroke such that if the rotor 31 is at the compression stroke, current flows to ignition plugs to realize ignition, and if at the exhaust stroke, current does not flow to the ignition plugs.
- the electronic control unit 34 determines that the rotor 31 is in the exhaust stroke, while if ignition has occurred for the first cylinder, the electronic control unit 34 determines that the rotor 31 is in the compression stroke. At this time, engine rpm are detected through the sensor 32 when the first cylinder is at the TDC in step S 42 .
- step S 43 the electronic control unit 34 determines a moment at which engine rpm abruptly increase in step S 43 .
- the electronic control unit 34 determines that the first cylinder is at the compression stroke in step S 44 .
- step S 45 Further, starting from the moment where the electronic control unit 34 determines the first cylinder is at the compression stroke, ignition for the second cylinder then for the third cylinder is performed, thereby operating the engine in step S 45 .
- engine rpm are detected according to whether or not ignition occurs according to the flow of current at the TDC of the first cylinder. Further, the point of an abrupt increase in engine rpm is detected to determine the compression stroke of the first cylinder, thereby enabling the identification of the cylinders without the use of sensors.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
Description
- (a) Field of the Invention
- The present invention relates to a system for identifying a cylinder in an engine, and more particularly, to a system that is able to identify a cylinder in a 3-cylinder, 4-stroke engine without the use of a sensor mounted on a distributor, which is connected to a camshaft.
- (b) Description of the Related Art
- The identification of a cylinder in an engine is used in controlling ignition timing and is typically performed by sensors. That is, with reference to FIG. 1, there is mounted an
internal target wheel 11 of adistributor 10 connected to a crankshaft, and acrank angle sensor 12 for detecting a crank angle and apiston position sensor 13 for detecting a top dead center of a piston are mounted to read theinternal target wheel 11. Using outputs of thesensors - In another system used to identify a cylinder of an engine, with reference to FIG. 2, a
target wheel 21 is mounted to acrankshaft 20 and acrank angle sensor 22 for detecting a crank angle is mounted to read thetarget wheel 21. Also, atarget wheel 24 is mounted on acamshaft 23 and apiston position sensor 25 is mounted to read thetarget wheel 24. Using outputs of thesensors - With above conventional systems for identifying cylinders in order to control ignition timing, a plurality of sensors are mounted on each crankshaft to detect a cylinder and a crank angle. Accordingly, the engine is made increasingly complex and the amount of space used by the required parts is increased. This decreases productivity and increases the overall costs of the vehicle.
- The present invention has been made in an effort to solve the above problems.
- It is an object of the present invention to provide a system in which engine rpm are detected according to whether or not ignition occurs according to the flow of an electric current at a TDC of a first cylinder. Further, the point of an abrupt increase in engine rpm is detected to determine a compression stroke of the first cylinder, thereby enabling the identification of the cylinders without the use of sensors
- To achieve the above object, the present invention provides a system for identifying a cylinder in an engine comprising means for applying an electric current every time a first cylinder of a 3-cylinder, 4-stroke engine is at a top dead center; means for detecting engine rpm when the current is applied; and control means for determining an exhaust stroke when the engine rpm do not increase, and for determining a compression stroke when the engine rpm abruptly increase, and sequentially providing ignition for a second cylinder and a third cylinder to operate the engine.
- According to another aspect, the present invention provides a method for identifying a cylinder in an engine, comprising the steps of applying an electric current every time a first cylinder of a 3-cylinder, 4-stroke engine is at a top dead center; detecting engine rpm when the electric current is applied; and determining a type of a stroke of the engine according to the detected engine rpm.
- When the engine rpm do not increase, the type of the stroke is determined as an exhaust stroke, and when the engine rpm abruptly increase, the type of the stroke is determined as a compression stroke.
- When the type of the stroke is determined as a compression stroke, the method further comprises the step of sequentially providing ignition for a second cylinder and a third cylinder to operate the engine.
- The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention, and, together with the description, serve to explain the principles of the invention:
- FIG. 1 is an internal front view of a distributor to which there are mounted conventional sensors for identifying a cylinder;
- FIG. 2 is a front view of a crankshaft to which there are mounted conventional sensors for identifying a cylinder;
- FIG. 3 is a longitudinal sectional view of a system for identifying a cylinder in an engine according to a preferred embodiment of the present invention;
- FIG. 4 is a flow chart of operations of the system of FIG. 3; and
- FIG. 5 is a timing chart of the system of FIG. 3.
- Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
- FIG. 3 is a longitudinal sectional view of a system for identifying a cylinder in an engine according to a preferred embodiment of the present invention.
- The system includes a
distributor 30 for supplying a high-voltage current from a secondary coil of an ignition coil to each cylinder of a 3-cylinder, 4-stroke engine; arotor 31 rotating together with a terminal, the terminal transmitting the high-voltage current to each cylinder; a sensor 32 for detecting rpm of therotor 31; and anelectronic control unit 33 for identifying a cylinder by output of the sensor 32. - The
rotor 31 rotates to be positioned at different locations corresponding to a first cylinder or between the second and third cylinders. When first starting the engine, it can not be known if the first cylinder is at the end of the compression stroke or the end of the exhaust stroke since there is no camshaft sensor. In order to distinguish between the end of the exhaust stroke and end of the compression stroke, a secondary electric power of the ignition coil is applied during each stroke such that if therotor 31 is at the compression stroke, current flows to ignition plugs to realize ignition, and if at the exhaust stroke, current does not flow to the ignition plugs. - Hence, with reference also to FIGS. 4 and 5, when the first cylinder is at the top dead center (TDC), the secondary electric power of the ignition coil is applied to the ignition coil continuously for every stroke in step S40. At this time, if the
rotor 31 is in the compression stroke, ignition is realized, but if therotor 31 is not in the compression stroke, ignition is not realized. The electronic control unit 34 determines if ignition has occurred for the first cylinder in step S41. - If ignition has not occurred for the first cylinder, the electronic control unit34 determines that the
rotor 31 is in the exhaust stroke, while if ignition has occurred for the first cylinder, the electronic control unit 34 determines that therotor 31 is in the compression stroke. At this time, engine rpm are detected through the sensor 32 when the first cylinder is at the TDC in step S42. - Subsequently, while engine rpm are being detected, the electronic control unit34 determines a moment at which engine rpm abruptly increase in step S43. At the moment where engine rpm abruptly increase, the electronic control unit 34 determines that the first cylinder is at the compression stroke in step S44.
- Further, starting from the moment where the electronic control unit34 determines the first cylinder is at the compression stroke, ignition for the second cylinder then for the third cylinder is performed, thereby operating the engine in step S45.
- In the present invention described above, engine rpm are detected according to whether or not ignition occurs according to the flow of current at the TDC of the first cylinder. Further, the point of an abrupt increase in engine rpm is detected to determine the compression stroke of the first cylinder, thereby enabling the identification of the cylinders without the use of sensors.
- Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that many variations and/or modifications of the basic inventive concepts herein taught which may appear to those skilled in the present art will still fall within the spirit and scope of the present invention, as defined in the appended claims.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1999-66710 | 1999-12-30 | ||
KR1019990066710A KR100353987B1 (en) | 1999-12-30 | 1999-12-30 | Device afor discriminating engine cylinder of vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010018911A1 true US20010018911A1 (en) | 2001-09-06 |
US6457465B2 US6457465B2 (en) | 2002-10-01 |
Family
ID=19633845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/751,336 Expired - Lifetime US6457465B2 (en) | 1999-12-30 | 2000-12-29 | System for identifying cylinder in engine |
Country Status (3)
Country | Link |
---|---|
US (1) | US6457465B2 (en) |
JP (1) | JP2001214795A (en) |
KR (1) | KR100353987B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010060445A1 (en) * | 2008-11-27 | 2010-06-03 | Fev Motorentechnik Gmbh | Method for detecting misfires in an internal combustion engine, control device for an internal combustion engine, and internal combustion engine |
WO2024083788A1 (en) * | 2022-10-20 | 2024-04-25 | Vitesco Technologies GmbH | Method for managing a restart phase of an internal combustion engine in degraded mode |
Families Citing this family (28)
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JP2003193889A (en) * | 2001-12-27 | 2003-07-09 | Denso Corp | Intake control device for multi-cylinder internal combustion engine |
KR20040001634A (en) * | 2002-06-28 | 2004-01-07 | 현대자동차주식회사 | Cylinder detection method of engine |
US6874473B2 (en) * | 2003-08-11 | 2005-04-05 | Tecumseh Products Company | Engine cycle recognition for fuel delivery |
US6871617B1 (en) | 2004-01-09 | 2005-03-29 | Ford Global Technologies, Llc | Method of correcting valve timing in engine having electromechanical valve actuation |
US7032545B2 (en) * | 2004-03-19 | 2006-04-25 | Ford Global Technologies, Llc | Multi-stroke cylinder operation in an internal combustion engine |
US7079935B2 (en) | 2004-03-19 | 2006-07-18 | Ford Global Technologies, Llc | Valve control for an engine with electromechanically actuated valves |
US7031821B2 (en) | 2004-03-19 | 2006-04-18 | Ford Global Technologies, Llc | Electromagnetic valve control in an internal combustion engine with an asymmetric exhaust system design |
US7055483B2 (en) * | 2004-03-19 | 2006-06-06 | Ford Global Technologies, Llc | Quick starting engine with electromechanical valves |
US7107946B2 (en) * | 2004-03-19 | 2006-09-19 | Ford Global Technologies, Llc | Electromechanically actuated valve control for an internal combustion engine |
US7140355B2 (en) | 2004-03-19 | 2006-11-28 | Ford Global Technologies, Llc | Valve control to reduce modal frequencies that may cause vibration |
US7066121B2 (en) | 2004-03-19 | 2006-06-27 | Ford Global Technologies, Llc | Cylinder and valve mode control for an engine with valves that may be deactivated |
US7165391B2 (en) | 2004-03-19 | 2007-01-23 | Ford Global Technologies, Llc | Method to reduce engine emissions for an engine capable of multi-stroke operation and having a catalyst |
US7383820B2 (en) | 2004-03-19 | 2008-06-10 | Ford Global Technologies, Llc | Electromechanical valve timing during a start |
US6938598B1 (en) | 2004-03-19 | 2005-09-06 | Ford Global Technologies, Llc | Starting an engine with electromechanical valves |
US7021289B2 (en) * | 2004-03-19 | 2006-04-04 | Ford Global Technology, Llc | Reducing engine emissions on an engine with electromechanical valves |
US7017539B2 (en) | 2004-03-19 | 2006-03-28 | Ford Global Technologies Llc | Engine breathing in an engine with mechanical and electromechanical valves |
US7107947B2 (en) | 2004-03-19 | 2006-09-19 | Ford Global Technologies, Llc | Multi-stroke cylinder operation in an internal combustion engine |
US7063062B2 (en) | 2004-03-19 | 2006-06-20 | Ford Global Technologies, Llc | Valve selection for an engine operating in a multi-stroke cylinder mode |
US7128687B2 (en) | 2004-03-19 | 2006-10-31 | Ford Global Technologies, Llc | Electromechanically actuated valve control for an internal combustion engine |
US7032581B2 (en) | 2004-03-19 | 2006-04-25 | Ford Global Technologies, Llc | Engine air-fuel control for an engine with valves that may be deactivated |
US7072758B2 (en) | 2004-03-19 | 2006-07-04 | Ford Global Technologies, Llc | Method of torque control for an engine with valves that may be deactivated |
US7128043B2 (en) | 2004-03-19 | 2006-10-31 | Ford Global Technologies, Llc | Electromechanically actuated valve control based on a vehicle electrical system |
US7028650B2 (en) * | 2004-03-19 | 2006-04-18 | Ford Global Technologies, Llc | Electromechanical valve operating conditions by control method |
US7392790B2 (en) * | 2006-01-20 | 2008-07-01 | Caterpillar Inc. | System and method for resolving crossed electrical leads |
US7370635B2 (en) * | 2006-01-20 | 2008-05-13 | Caterpillar Inc. | System and method for resolving electrical leads |
JP4801184B2 (en) * | 2009-04-20 | 2011-10-26 | 本田技研工業株式会社 | Ignition control device for general-purpose internal combustion engine |
KR101795306B1 (en) * | 2016-10-07 | 2017-11-07 | 현대자동차주식회사 | Starting control method for a vehicle |
KR102323407B1 (en) * | 2017-09-08 | 2021-11-05 | 현대자동차주식회사 | Starting control method for a vehicle in cam shaft position sensor failure |
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US3972230A (en) * | 1975-06-19 | 1976-08-03 | Rca Corporation | Detecting malfunction in cylinders of internal combustion engines |
JP2541949B2 (en) * | 1986-11-28 | 1996-10-09 | 本田技研工業株式会社 | Ignition timing control device for 4-cycle internal combustion engine |
US5402675A (en) * | 1990-01-26 | 1995-04-04 | Robert Bosch Gmbh | Method for recognizing the power stroke of a four-stroke engine |
US5109695A (en) * | 1990-08-24 | 1992-05-05 | Ford Motor Company | Misfire detection in an internal combustion engine |
FR2692623B1 (en) * | 1992-06-23 | 1995-07-07 | Renault | CYLINDER MARKING METHOD FOR THE PILOTAGE OF AN ELECTRONIC INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE. |
US5613473A (en) * | 1993-08-26 | 1997-03-25 | Siemens Aktiengesellschaft | Method of identifying the stroke positions in an internal combustion engine upon startup |
US5562082A (en) * | 1995-03-20 | 1996-10-08 | Delco Electronics Corp. | Engine cycle identification from engine speed |
FR2734322B1 (en) * | 1995-05-15 | 1997-07-25 | Magneti Marelli France | METHOD FOR RECOGNIZING THE PHASE OF THE CYLINDERS OF A FOUR-TIME CYCLE INTERNAL COMBUSTION ENGINE |
DE19521277A1 (en) * | 1995-06-10 | 1996-12-12 | Bosch Gmbh Robert | Device for cylinder detection in a multi-cylinder internal combustion engine |
US5756888A (en) * | 1997-03-20 | 1998-05-26 | Marquez-Escoto; Jose G. | Compression stroke indicator |
-
1999
- 1999-12-30 KR KR1019990066710A patent/KR100353987B1/en not_active IP Right Cessation
-
2000
- 2000-12-28 JP JP2000402799A patent/JP2001214795A/en active Pending
- 2000-12-29 US US09/751,336 patent/US6457465B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010060445A1 (en) * | 2008-11-27 | 2010-06-03 | Fev Motorentechnik Gmbh | Method for detecting misfires in an internal combustion engine, control device for an internal combustion engine, and internal combustion engine |
CN102224333A (en) * | 2008-11-27 | 2011-10-19 | Fev电机技术有限公司 | Method for detecting misfires in an internal combustion engine, control device for an internal combustion engine, and internal combustion engine |
WO2024083788A1 (en) * | 2022-10-20 | 2024-04-25 | Vitesco Technologies GmbH | Method for managing a restart phase of an internal combustion engine in degraded mode |
FR3141217A1 (en) * | 2022-10-20 | 2024-04-26 | Vitesco Technologies | Method for managing a restart phase of an internal combustion engine in degraded mode |
Also Published As
Publication number | Publication date |
---|---|
US6457465B2 (en) | 2002-10-01 |
KR20010059318A (en) | 2001-07-06 |
KR100353987B1 (en) | 2002-09-27 |
JP2001214795A (en) | 2001-08-10 |
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