WO2009006712A3 - Alternator signal used as crankshaft position sensor in small motorcycle engines - Google Patents

Alternator signal used as crankshaft position sensor in small motorcycle engines Download PDF

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Publication number
WO2009006712A3
WO2009006712A3 PCT/BR2007/000180 BR2007000180W WO2009006712A3 WO 2009006712 A3 WO2009006712 A3 WO 2009006712A3 BR 2007000180 W BR2007000180 W BR 2007000180W WO 2009006712 A3 WO2009006712 A3 WO 2009006712A3
Authority
WO
WIPO (PCT)
Prior art keywords
engine
position sensor
magneto
signal used
rotational position
Prior art date
Application number
PCT/BR2007/000180
Other languages
French (fr)
Other versions
WO2009006712A2 (en
Inventor
Filho Orlando Volpato
Original Assignee
Delphi Tech Inc
Filho Orlando Volpato
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Delphi Tech Inc, Filho Orlando Volpato filed Critical Delphi Tech Inc
Priority to PCT/BR2007/000180 priority Critical patent/WO2009006712A2/en
Publication of WO2009006712A2 publication Critical patent/WO2009006712A2/en
Publication of WO2009006712A3 publication Critical patent/WO2009006712A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/34—Ultra-small engines, e.g. for driving models
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

A method for determining engine rotational position and camshaft phase at all times using the output signal of an engine magneto. There is no need for a conventional independent crank sensor which therefore is deleted from an engine in accordance with the invention, thus reducing the weight and cost of an engine. Instantaneous engine speed variation during the compression stroke and the immediately succeeding power (expansion/combustion) stroke causes an uneven periodicity of the output voltage signal from the magneto, as indicated by the period of the voltage reversals, which period variation is detected by an Engine Control Module and used in programmed algorithms to infer the crankshaft rotational position and speed and the camshaft phase at all times. These determinations may be used, among other purposes, to time fuel injection and ignition coil charging and firing.
PCT/BR2007/000180 2007-07-12 2007-07-12 Alternator signal used as crankshaft position sensor in small motorcycle engines WO2009006712A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/BR2007/000180 WO2009006712A2 (en) 2007-07-12 2007-07-12 Alternator signal used as crankshaft position sensor in small motorcycle engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR2007/000180 WO2009006712A2 (en) 2007-07-12 2007-07-12 Alternator signal used as crankshaft position sensor in small motorcycle engines

Publications (2)

Publication Number Publication Date
WO2009006712A2 WO2009006712A2 (en) 2009-01-15
WO2009006712A3 true WO2009006712A3 (en) 2009-04-02

Family

ID=40229124

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2007/000180 WO2009006712A2 (en) 2007-07-12 2007-07-12 Alternator signal used as crankshaft position sensor in small motorcycle engines

Country Status (1)

Country Link
WO (1) WO2009006712A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206182A1 (en) * 2014-04-01 2015-10-01 Robert Bosch Gmbh Method for determining a crankshaft position of an internal combustion engine
US10253707B2 (en) 2014-06-27 2019-04-09 Orbital Australia Pty Ltd Redundancy in UAV engine timing position systems
CN104481694B (en) * 2014-11-18 2017-01-11 奇瑞汽车股份有限公司 Self-diagnosis method for rotating speed of engine crankshaft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024844A (en) * 1973-04-28 1977-05-24 Nippondenso Co., Ltd. Ignition device for an internal combustion engine with cam design for preventing undesired firings
US6341253B1 (en) * 1999-09-24 2002-01-22 Denso Corporation Engine control apparatus with cylinder discrimination function

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024844A (en) * 1973-04-28 1977-05-24 Nippondenso Co., Ltd. Ignition device for an internal combustion engine with cam design for preventing undesired firings
US6341253B1 (en) * 1999-09-24 2002-01-22 Denso Corporation Engine control apparatus with cylinder discrimination function

Also Published As

Publication number Publication date
WO2009006712A2 (en) 2009-01-15

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