WO2010095548A1 - Détecteur de vitesse pour moteur - Google Patents

Détecteur de vitesse pour moteur Download PDF

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Publication number
WO2010095548A1
WO2010095548A1 PCT/JP2010/051957 JP2010051957W WO2010095548A1 WO 2010095548 A1 WO2010095548 A1 WO 2010095548A1 JP 2010051957 W JP2010051957 W JP 2010051957W WO 2010095548 A1 WO2010095548 A1 WO 2010095548A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection
engine speed
piston
crankshaft
hole
Prior art date
Application number
PCT/JP2010/051957
Other languages
English (en)
Japanese (ja)
Inventor
一裕 北川
Original Assignee
ヤンマー株式会社
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 ヤンマー株式会社 filed Critical ヤンマー株式会社
Publication of WO2010095548A1 publication Critical patent/WO2010095548A1/fr

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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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines

Definitions

  • the present invention relates to an engine speed detection device mounted on an engine.
  • a position detecting member fixed to the crankshaft is detected by a detecting means such as a sensor, and the engine speed and the piston position are calculated. It was. However, since the detection device configured as described above performs detection once for each rotation of the crankshaft, if the rotation speed of the crankshaft fluctuates during one rotation, the engine rotation speed and the top dead center position of the piston are accurate. There was a bug that could not be calculated.
  • the tooth speed of the ring gear fixed to the crankshaft is detected by a detecting means such as a sensor, so that the engine speed and piston position can be adjusted even if the crankshaft speed fluctuates.
  • a detecting means such as a sensor
  • the present invention has been made in view of the problems as described above, and can detect the engine speed and the engine speed capable of stably calculating the engine speed and the top dead center position of the piston without adding new detection means.
  • the purpose is to provide a device.
  • the fly hole that rotates in conjunction with the crankshaft of the engine, and a plurality of detection portions are formed at predetermined equiangular intervals on the same circle centered on the rotation axis of the plate surface, Based on a detection means for detecting each detection part, and a detection signal from the detection means, a fixed rotation angle of the crankshaft in which one detection part among the detection parts is detected as a reference position, And calculating means for calculating the engine speed and the top dead center position of the piston when the crankshaft rotates by a certain rotation angle.
  • each of the detection parts is a non-through hole formed in parallel with the rotation axis on the same circle with the rotation axis of the flywheel as the center, and one is a notch. is there.
  • the detection means is configured to be positionable by a positioning jig that is fitted with a non-through hole that is one of the detection parts on one side and fitted with the detection means on the other side.
  • the reference position can be easily detected. Thereby, it is possible to stably and accurately calculate the engine speed and the top dead center position of the piston without adding new detection means.
  • the detection means can be arranged accurately based on the position of the detection hole. Thereby, it is possible to stably and accurately calculate the engine speed and the top dead center position of the piston without adding new detection means.
  • FIGS. 1 and 2 An engine speed detection device 1 that is an embodiment of the engine speed detection device according to the present invention will be described with reference to FIGS. 1 and 2.
  • the vertical direction is defined with the arrow U direction in FIG. 1A as the upward direction
  • the front-rear direction is defined with the arrow F direction in FIG. 1B as the forward direction.
  • the engine speed detection device 1 is provided in an engine 10 having six cylinders (not shown), and detects the speed of a crankshaft 11 that is rotated by reciprocation of each piston (not shown).
  • the engine rotational speed R and the top dead center positions TDC1, TDC2, and TDC3 of each piston are calculated.
  • the engine speed detection device 1 mainly includes a flywheel 2, detection means 3, and calculation means 4.
  • the number of cylinders of the engine 10 in the present embodiment is six, and the first and sixth pistons (not shown), the second and fourth pistons (not shown), and the third and fifth pistons (not shown) are in phase. Configured.
  • a top dead center position of the first piston and the sixth piston is TDC1
  • a top dead center position of the second piston and the fourth piston is TDC2
  • a top dead center position of the third piston and the fifth piston is TDC3.
  • the engine 10 in this embodiment may be a diesel engine or a gasoline engine, and the number of cylinders and the phase of each piston are not limited to this embodiment.
  • the flywheel 2 is fixed to the crankshaft 11, stabilizes the rotation of the crankshaft 11, and can detect the crankshaft angle ⁇ by rotating in conjunction with the crankshaft 11.
  • a plurality of detection holes 2 a, 2 a,... As an example of a detection part are formed on the same circle around the rotation axis of the plate surface of the flywheel 2 in parallel with the rotation axis.
  • the plurality of detection holes 2a, 2a,... Are non-through holes as shown in FIG. 1 (b), and are formed on the circle at predetermined equiangular intervals.
  • One of the detection holes 2a, 2a,... Is configured as a notch (blank hole) 2b.
  • the flywheel 2 is fixed to the crankshaft 11 so that the notch 2b is located immediately above the crankshaft 11 when the first piston and the sixth piston reach the top dead center position TDC1.
  • the detecting means 3 is composed of a magnetic proximity sensor or the like, and detects the detection holes 2a, 2a,.
  • the detection means 3 is disposed at a position close to the detection holes 2a, 2a,... And fixed to the main body of the engine 10 or the like via a fixture 12.
  • detecting means 3 detects detection hole 2 a, it transmits a predetermined signal to calculating means 4.
  • the detection means 3 is not limited to this embodiment as long as it detects the detection hole 2a.
  • the calculating means 4 calculates the engine speed R and the top dead center positions TDC1, TDC2, and TDC3 of each piston.
  • the calculation unit 4 may be configured such that a CPU, ROM, RAM, HDD, or the like is connected by a bus, or may be configured by a one-chip LSI or the like.
  • the calculation means 4 stores various programs and data for calculating the engine speed R and the top dead center positions TDC1, TDC2, and TDC3 of each piston.
  • the calculation means 4 includes the rotation angle ⁇ 1 of the crankshaft until the first piston and the sixth piston reach the top dead center position TDC1 after the detection means 3 detects the hole 2b, and the second piston and the fourth piston The crankshaft rotation angle ⁇ 2 until the top dead center position TDC2 is reached, and the crankshaft rotation angle ⁇ 3 until the third piston and the fifth piston reach the top dead center position TDC3 are set.
  • the calculation means 4 is connected to the detection means 3, acquires a predetermined signal output when the detection means 3 detects the detection hole 2a, and calculates the engine speed R and the upper limit of each piston. It is possible to calculate the dead center positions TDC1, TDC2, and TDC3.
  • the calculation means 4 is connected to an electronic control unit (hereinafter simply referred to as “ECU”) 5 that controls the engine 10 or is configured integrally with the ECU 5 to calculate the calculated engine speed R and top dead of each piston.
  • the point positions TDC1, TDC2, and TDC3 can be transmitted to the ECU 5.
  • the ECU 5 is connected to the engine 10, the display means 6, the input means 7, etc., displays the engine speed R calculated by the calculation means 4 on the display means 6, and the top dead of each cylinder calculated by the calculation means 4.
  • the engine 10 is controlled in accordance with the input value from the input means 7.
  • the calculation means 4 acquires a detection signal from the detection means 3 when the detection means 3 detects the detection hole 2a.
  • Calculating means 4 calculates the engine speed R based on the detection interval of the detection signal and transmits it to the ECU 5.
  • the calculating means 4 compares the detection interval of the detection signal with the detection interval immediately before the detection interval, and when the detection interval is greater than or equal to a predetermined value, determines that the missing hole 2b has been detected and transmits it to the ECU 5.
  • the depth of the detecting hole 2a in the portion of the notched hole 2b is made shallower, deeper or a through hole so that the detection value by the detecting means 3 can be detected by the other detecting holes 2b.
  • the reference position can be configured by being different from the value. In this case, in the case of the notched hole 2b, when knocking occurs or a load is applied, the interval between pulses may be extended and it may be determined as the missing hole 2b. The position can be detected.
  • the calculating means 4 determines that the first piston and the sixth piston have reached the top dead center position TDC1 when the crankshaft 11 is rotated by the rotational angle ⁇ 1 with the crankshaft angle ⁇ from which the cutout hole 2b is detected as a reference position. Then, a signal is transmitted to the ECU 5.
  • the calculation means 4 determines that the second piston and the fourth piston have reached the top dead center position TDC2 when the crankshaft 11 is rotated by the rotation angle ⁇ 2 with the crankshaft angle ⁇ from which the cutout hole 2b is detected as a reference position. Then, a signal is transmitted to the ECU 5.
  • the calculation means 4 determines that the third piston and the fifth piston have reached the top dead center position TDC3 when the crankshaft 11 is rotated by the rotation angle ⁇ 3 with the crankshaft angle ⁇ from which the hole 2b is detected as a reference position. Then, a signal is transmitted to the ECU 5.
  • the calculation means 4 transmits a signal when the crankshaft 11 rotates by a preset rotation angle after the detection of the notched hole 2b, so that the time until the signal reaches the ECU 5 is transmitted.
  • the signal can be transmitted in consideration of Therefore, the calculation means 4 determines that the first piston and the sixth piston have reached the top dead center position TDC1, as compared with a configuration in which a signal is transmitted at the same time when the missing hole 2b is detected, for example,
  • the determination that the fourth piston has reached the top dead center position TDC2 and the determination that the third piston and the fifth piston have reached the top dead center position TDC3 can be more reliably performed.
  • ECU5 displays the engine speed R on the display means 6 after acquiring the engine speed R from the calculation means 4. Further, the ECU 5 acquires signals of the engine speed R and the top dead center positions TDC1, TDC2, and TDC3 from the calculation means 4, and then controls the engine 10 according to the input value of the input means 7 based on the signals.
  • the detection means 3 is fixed to the fixture 12 with the detection hole 2a as a reference.
  • the detection means 3 is positioned by the positioning jig 3a.
  • the positioning jig 3a has one side formed as a convex part that can be fitted with the detection hole 2a without any gap, and the other side formed with a concave part that can be fitted with the detection means 3 without any gap.
  • the positioning jig 3a is positioned at a rotational angle ⁇ 1 from the notch 2b positioned directly above the crankshaft 11 in the direction opposite to the rotational direction of the flywheel 2.
  • the position of the detection means 3 is determined by fitting a convex portion on one side into the detection hole 2a and fitting the detection means 3 on the concave portion on the other side.
  • the detection means 3 is fixed to the fixing tool 12 by the nut 3b while being positioned by the positioning jig 3a.
  • the fly hole 2 that rotates in conjunction with the crankshaft 11 of the engine 10 and that has a plurality of detection holes 2a formed in parallel with the rotation axis on the circumference around the rotation axis, and the detection hole And a calculating means 4 for calculating the engine speed R and the top dead center positions TDC1, TDC2, and TDC3 of the piston based on the detection signal from the detecting means 3.
  • a calculating means 4 for calculating the engine speed R and the top dead center positions TDC1, TDC2, and TDC3 of the piston based on the detection signal from the detecting means 3.
  • the plurality of detection holes 2a are non-through holes formed at equiangular intervals, and one of them is a missing hole 2b.
  • the rigidity of the flywheel 2 can be maintained as compared with a configuration in which the detection hole 2a is a through hole, and the detection hole 2a can be variously adjusted by adjusting the depth of the hole. It can cope with the detection means.
  • the reference position can be easily detected by setting one of the detection holes 2a as the missing hole 2b. Thereby, it is possible to stably and accurately calculate the engine speed R and the top dead center positions TDC1, TDC2, and TDC3 of the piston without adding new detection means.
  • the detection means 3 is configured to be positionable by a positioning jig 3a that is fitted on the detection hole 2a on one side and fitted on the detection means 3 on the other side. By comprising in this way, the detection means 3 can be arrange
  • the present invention can be used in the technology of an engine speed detection device for calculating the engine speed and the position of the top dead center of a piston, and can be applied to various engines.

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

Abstract

L'invention porte sur un détecteur de vitesse pour moteur qui comporte un volant moteur (2) verrouillé au vilebrequin (11) d'un moteur (10) de façon à le faire tourner et pourvu d'une pluralité de trous de détection (2a) formés dans la surface plate à des intervalles équiangles sur le même cercle autour de l'axe de rotation, un moyen de détection (3) afin de détecter chaque trou de détection (2a), et un moyen de calcul (4) pour calculer la vitesse du moteur (R) et les positions de point mort supérieures (TDC1, TDC2, TDC3) d'un piston en fonction du signal de détection provenant du moyen de détection (3) lorsque le vilebrequin (11) est en rotation selon un angle de rotation fixe avec un angle de rotation fixe du vilebrequin (11) dans lequel l'un des trous de détection (2a) est détecté comme position de référence.
PCT/JP2010/051957 2009-02-19 2010-02-10 Détecteur de vitesse pour moteur WO2010095548A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009036954A JP5198317B2 (ja) 2009-02-19 2009-02-19 エンジン回転数検出装置
JP2009-036954 2009-02-19

Publications (1)

Publication Number Publication Date
WO2010095548A1 true WO2010095548A1 (fr) 2010-08-26

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Application Number Title Priority Date Filing Date
PCT/JP2010/051957 WO2010095548A1 (fr) 2009-02-19 2010-02-10 Détecteur de vitesse pour moteur

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JP (1) JP5198317B2 (fr)
TW (1) TW201043773A (fr)
WO (1) WO2010095548A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111679092A (zh) * 2020-06-05 2020-09-18 宜昌江峡船用机械有限责任公司 一种压力机飞轮转速检测装置及检测方法
CN112576386A (zh) * 2020-11-02 2021-03-30 潍柴动力股份有限公司 提高发动机一致性的控制方法、装置及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10227272A (ja) * 1997-02-12 1998-08-25 Yanmar Diesel Engine Co Ltd フライホイール回転検出機構
JP2006118507A (ja) * 2004-10-22 2006-05-11 Doosan Infracore Co Ltd エンジンの燃焼装置制御システム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6119518A (ja) * 1984-07-04 1986-01-28 Toyota Motor Corp 生産指示装置
JPS6119519A (ja) * 1984-07-06 1986-01-28 Toyota Motor Corp 生産指示装置
JPH10220263A (ja) * 1997-02-03 1998-08-18 Honda Motor Co Ltd エンジンのタイミングパルス検出装置
JP2003148231A (ja) * 2001-11-08 2003-05-21 Toyota Motor Corp 回転状態検知装置および駆動力源の制御装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10227272A (ja) * 1997-02-12 1998-08-25 Yanmar Diesel Engine Co Ltd フライホイール回転検出機構
JP2006118507A (ja) * 2004-10-22 2006-05-11 Doosan Infracore Co Ltd エンジンの燃焼装置制御システム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111679092A (zh) * 2020-06-05 2020-09-18 宜昌江峡船用机械有限责任公司 一种压力机飞轮转速检测装置及检测方法
CN112576386A (zh) * 2020-11-02 2021-03-30 潍柴动力股份有限公司 提高发动机一致性的控制方法、装置及系统
CN112576386B (zh) * 2020-11-02 2022-09-23 潍柴动力股份有限公司 提高发动机一致性的控制方法、装置及系统

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Publication number Publication date
TW201043773A (en) 2010-12-16
JP2010190155A (ja) 2010-09-02
JP5198317B2 (ja) 2013-05-15

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