JP2010190155A - Engine speed detection device - Google Patents

Engine speed detection device Download PDF

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JP2010190155A
JP2010190155A JP2009036954A JP2009036954A JP2010190155A JP 2010190155 A JP2010190155 A JP 2010190155A JP 2009036954 A JP2009036954 A JP 2009036954A JP 2009036954 A JP2009036954 A JP 2009036954A JP 2010190155 A JP2010190155 A JP 2010190155A
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detection
engine speed
piston
top dead
dead center
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JP5198317B2 (en
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Kazuhiro Kitagawa
一裕 北川
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Yanmar Co Ltd
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Yanmar Co Ltd
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Priority to TW99103344A priority patent/TW201043773A/en
Priority to PCT/JP2010/051957 priority patent/WO2010095548A1/en
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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
    • 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

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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

<P>PROBLEM TO BE SOLVED: To provide an engine speed detection device 1 stably and correctly calculating an engine speed R and the top dead center positions TDC1, TDC2, TDC3 of a piston, without any additional detection means. <P>SOLUTION: The engine speed detection device includes: a flywheel 2 rotated linking with the crankshaft 11 of an engine 10, and having a plurality of detection holes 2a formed on the same circle around the rotation axis of a plate face to be in parallel with the rotation axis; a detection means 3 detecting the detection holes 2a; and a calculation means 4 calculating the engine speed R and the top dead center positions TDC1, TDC2, TDC3 of the piston, based on the detection signals from the detection means 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、エンジンに搭載されるエンジン回転数検出装置に関する。   The present invention relates to an engine speed detection device mounted on an engine.

従来、エンジン回転数やピストンの上死点位置を算出するために、クランク軸に固設された位置検出部材をセンサ等の検出手段によって検出し、エンジンの回転数およびピストンの位置を算出していた。しかし、このような構成の検出装置ではクランク軸一回転につき一回の検出であるため、クランク軸の回転数が一回転中に変動した場合は、エンジン回転数やピストンの上死点位置が正確に算出できない不具合があった。   Conventionally, in order to calculate the engine speed and the top dead center position of the piston, 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.

そこで、位置検出部材の検出に加え、クランク軸に固設されるリングギアの歯先をセンサ等の検出手段によって検出することでクランク軸の回転数が変動してもエンジン回転数およびピストン位置を正確に算出することが出来るエンジン回転数検出装置の技術は公知である。たとえば特許文献１のごとくである。   Therefore, in addition to the detection of the position detection member, 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. The technology of an engine speed detection device that can be accurately calculated is known. For example, as in Patent Document 1.

しかし、上述した特許文献に開示された構成では、エンジンの回転数とピストン位置を正確に算出するためリングギア検出用の検出手段を新たなセンサを追加する必要がありコストアップの要因となっていた。また、リングギアの歯が欠損した場合は、クランク軸の正確な位置が検出できず、エンジン回転数およびピストン位置に誤差が発生するという問題点があった。   However, in the configuration disclosed in the above-mentioned patent document, it is necessary to add a new sensor to the detection means for detecting the ring gear in order to accurately calculate the engine speed and the piston position, which causes an increase in cost. It was. Further, when the teeth of the ring gear are lost, there is a problem that the exact position of the crankshaft cannot be detected, and errors occur in the engine speed and the piston position.

特許第３３２６８６６号公報Japanese Patent No. 3326866

本発明は、上記の如き課題を鑑みてなされたものであり、新たな検出手段を追加することなく、安定的に正確なエンジン回転数およびピストンの上死点位置が算出可能なエンジン回転数検出装置の提供を目的とする。   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.

請求項１においては、エンジンのクランク軸と連動して回転し、複数の検出用孔が板面の回転軸を中心とする同一円上に回転軸と平行に形成されるフライホールと、前記検出用孔を検出する検出手段と、前記検出手段からの検出信号に基づきエンジン回転数およびピストンの上死点位置を算出する算出手段と、を具備するものである。   According to a first aspect of the present invention, there is provided a flyhole that rotates in conjunction with a crankshaft of an engine, and wherein a plurality of detection holes are formed on the same circle around the rotation axis of the plate surface in parallel with the rotation axis, and the detection And detecting means for detecting the hole, and calculating means for calculating the engine speed and the top dead center position of the piston based on the detection signal from the detecting means.

請求項２においては、複数の前記検出用孔は、等角度間隔に形成されるとともに、一つを欠孔とすることを特徴とするものである。   According to a second aspect of the present invention, the plurality of detection holes are formed at equiangular intervals, and one of the detection holes is a missing hole.

請求項３においては、前記検出手段は、一側が前記検出用孔と嵌合し、他側が前記検出手段と嵌合する位置決め冶具によって位置決め可能に構成されることを特徴とするものである。   According to a third aspect of the present invention, the detection means is configured to be positionable by a positioning jig having one side fitted with the detection hole and the other side fitted with the detection means.

本発明の効果として、以下に示すような効果を奏する。   As effects of the present invention, the following effects can be obtained.

請求項１の如く構成したので、リングギア等の欠損などによる検出誤差や誤検出が発生しない。これにより、新たな検出手段を追加することなく、安定的に正確なエンジン回転数およびピストンの上死点位置を算出することができる。   Since it is configured as described in claim 1, detection errors and false detections due to missing ring gears and the like do not occur. 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.

請求項２の如く構成したので、容易に基準位置を検出することができる。これにより、新たな検出手段を追加することなく、安定的に正確なエンジン回転数およびピストンの上死点位置を算出することができる。   Since it is configured as in claim 2, 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.

請求項３の如く構成したので、検出用孔の位置に基づいて正確に検出手段を配設することができる。これにより、新たな検出手段を追加することなく、安定的に正確なエンジン回転数およびピストンの上死点位置を算出することができる。   According to the third aspect, the detection means can be accurately arranged 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.

（ａ）本発明の実施形態に係るエンジン回転数検出装置を示す図（ｂ）図１（ａ）におけるＡ−Ａ断面図。(A) The figure which shows the engine speed detection apparatus which concerns on embodiment of this invention. (B) AA sectional drawing in Fig.1 (a). 本発明の実施形態に係るエンジン回転数検出装置の構成図。The block diagram of the engine speed detection apparatus which concerns on embodiment of this invention. 本発明の実施形態に係るエンジン回転数検出装置のタイミングチャート。The timing chart of the engine speed detection apparatus which concerns on embodiment of this invention. 本発明の実施形態に係るエンジン回転数検出装置の検出手段位置決め構成図。The detection means positioning block diagram of the engine speed detection apparatus which concerns on embodiment of this invention.

次に、図１および図２を用いて本発明に係るエンジン回転数検出装置の実施形態であるエンジン回転数検出装置１について説明する。なお、図１（ａ）における矢印Ｕ方向を上方向として上下方向を規定し、図１（ｂ）における矢印Ｆ方向を前方向として前後方向を規定する。   Next, the engine speed detection apparatus 1 which is an embodiment of the engine speed detection apparatus 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, and the front-rear direction is defined with the arrow F direction in FIG. 1B as the forward direction.

エンジン回転数検出装置１は、図１に示すように、図示しない６個の気筒を備えるエンジン１０に具備され、図示しない各ピストンの往復運動によって回動されるクランク軸１１の回転数を検出し、エンジン回転数Ｒおよび各ピストンの上死点位置であるＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出するものである。エンジン回転数検出装置１は、主にフライホイール２と、検出手段３と、算出手段４と、から構成される。また、本実施形態におけるエンジン１０の気筒の数は６個とし、図示しない第１ピストンおよび第６ピストン、図示しない第２ピストンおよび第４ピストン、図示しない第３ピストンおよび第５ピストンがそれぞれ同位相に構成される。第１ピストンおよび第６ピストンの上死点位置をＴＤＣ１、第２ピストンおよび第４ピストンの上死点位置をＴＤＣ２、第３ピストンおよび第５ピストンの上死点位置をＴＤＣ３とする。なお、本実施形態におけるエンジン１０は、ディーゼルエンジンでもガソリンエンジンでもよく、気筒数および各ピストンの位相は、本実施形態に限定するものではない。   As shown in FIG. 1, 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, and 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.

フライホイール２は、クランク軸１１に固設され、クランク軸１１の回転を安定させるとともに、クランク軸１１と連動して回転することでクランク軸角度θを検出することができる。フライホイール２は、複数の検出用孔２ａ・２ａ・・がフライホイール２の板面の回転軸を中心とする同一円上に前記回転軸と平行に形成される。複数の検出用孔２ａ・２ａ・・は、前記円上に所定の等角度間隔に形成され、検出用孔２ａ・２ａ・・のうち一つは、欠孔（ブランク孔）２ｂとして構成される。フライホイール２は、第１ピストンおよび第６ピストンが上死点位置ＴＤＣ１に到達する時に、欠孔２ｂがクランク軸１１の真上に位置するようにクランク軸１１に固設される。   The flywheel 2 is fixed to the crankshaft 11, stabilizes the rotation of the crankshaft 11, and can detect the crankshaft angle θ by rotating in conjunction with the crankshaft 11. In the flywheel 2, a plurality of detection holes 2 a, 2 a,... 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 formed on the circle at predetermined equiangular intervals, and 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.

検出手段３は、磁気近接センサ等で構成され、検出用孔２ａ・２ａ・・を検出するものである。検出手段３は、検出用孔２ａ・２ａ・・に対向する近接位置に配置され、エンジン１０本体等に、固定具１２を介して固設される。検出手段３は、検出用孔２ａを検出すると、所定の信号を算出手段４に伝送する。なお、検出手段３は、検出用孔２ａを検出するものであれば、本実施形態に限定されるものではない。   The detection 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. When the detection means 3 detects the detection hole 2a, the detection means 3 transmits a predetermined signal to the calculation means 4. The detection means 3 is not limited to this embodiment as long as it detects the detection hole 2a.

算出手段４は、エンジン回転数Ｒおよび各ピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出するものである。算出手段４は、具体的には、ＣＰＵ、ＲＯＭ、ＲＡＭ、ＨＤＤ等がバスで接続される構成であってもよく、あるいはワンチップのＬＳＩ等からなる構成であってもよい。算出手段４には、エンジン回転数Ｒおよび各ピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出するための種々のプログラム及びデータが格納される。   The calculating means 4 calculates the engine speed R and the top dead center positions TDC1, TDC2, and TDC3 of each piston. Specifically, 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.

算出手段４は、検出手段３が欠孔２ｂを検出してから第１ピストンおよび第６ピストンが上死点位置ＴＤＣ１に到達するまでのクランク軸の回転角度θ１、第２ピストンおよび第４ピストンが上死点位置ＴＤＣ２に到達するまでのクランク軸の回転角度θ２、第３ピストンおよび第５ピストンが上死点位置ＴＤＣ３に到達するまでのクランク軸の回転角度θ３が設定される。   The calculation means 4 includes the rotation angle θ1 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 θ2 until the top dead center position TDC2 is reached, and the crankshaft rotation angle θ3 until the third piston and the fifth piston reach the top dead center position TDC3 are set.

算出手段４は、図２に示すように、検出手段３に接続され、検出手段３が検出用孔２ａを検出する際に出力する所定の信号を取得し、エンジン回転数Ｒおよび各ピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出することが可能である。   As shown in FIG. 2, 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.

算出手段４は、エンジン１０を制御する電子制御ユニット（以下、単に「ＥＣＵ」と記す）５に接続され、または、ＥＣＵ５と一体的に構成され、算出したエンジン回転数Ｒおよび各ピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３をＥＣＵ５に伝送することが可能である。ここで、ＥＣＵ５は、エンジン１０、表示手段６および入力手段７等に接続され、算出手段４が算出するエンジン回転数Ｒを表示手段６に表示し、算出手段４が算出する各シリンダの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３に基づき、入力手段７からの入力値に応じたエンジン１０の制御を行う。   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. Here, 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. Based on the point positions TDC1, TDC2, and TDC3, the engine 10 is controlled in accordance with the input value from the input means 7.

次に、図３を用いて本発明の第一実施形態に係るエンジン回転数検出装置１の算出手段４による算出態様について説明する。   Next, a calculation mode by the calculation unit 4 of the engine speed detection device 1 according to the first embodiment of the present invention will be described with reference to FIG.

算出手段４は、検出手段３が検出用孔２ａを検出した際、検出手段３から検出信号を取得する。   The calculation means 4 acquires a detection signal from the detection means 3 when the detection means 3 detects the detection hole 2a.

算出手段４は、検出信号の検出間隔に基づいてエンジン回転数Ｒを算出し、ＥＣＵ５に伝送する。   The calculation means 4 calculates the engine speed R based on the detection interval of the detection signal and transmits it to the ECU 5.

算出手段４は、検出信号の検出間隔と当該検出間隔の直前の検出間隔とを比較し、当該検出間隔が所定値以上の場合、欠孔２ｂが検出されたと判断し、ＥＣＵ５に伝送する。但し、欠孔２ｂを設ける代わりに、欠孔２ｂの部分の検出用孔２ａの深さを浅くまたは深くまたは貫通孔とすることにより、検出手段３による検出値が他の検出用孔２ｂの検出値と異なるように構成して、基準位置とすることができる。この場合、欠孔２ｂの場合、ノッキングが生じたりや負荷がかかったりした場合等では、パルスの間隔が伸びて欠孔２ｂと判断する可能性があるが、検出値が異なることにより確実に基準位置を検出することができる。   The calculation 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. However, instead of providing the notched hole 2b, 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.

算出手段４は、欠孔ｂ２が検出されたクランク軸角度θを基準位置として回転角度θ１だけクランク軸１１が回転したとき、第１ピストンおよび第６ピストンが上死点位置ＴＤＣ１に到達したと判断しＥＣＵ５に信号を伝送する。   The calculation 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 rotation angle θ1 with the crankshaft angle θ from which the cutout b2 is detected as a reference position. Then, a signal is transmitted to the ECU 5.

算出手段４は、欠孔ｂ２が検出されたクランク軸角度θを基準位置として回転角度θ２だけクランク軸１１が回転したとき、第２ピストンおよび第４ピストンが上死点位置ＴＤＣ２に到達したと判断しＥＣＵ５に信号を伝送する。   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 θ2 with the crankshaft angle θ from which the cutout b2 is detected as a reference position. Then, a signal is transmitted to the ECU 5.

算出手段４は、欠孔ｂ２が検出されたクランク軸角度θを基準位置として回転角度θ３だけクランク軸１１が回転したとき、第３ピストンおよび第５ピストンが上死点位置ＴＤＣ３に到達したと判断しＥＣＵ５に信号を伝送する。   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 θ3 with the crankshaft angle θ from which the hole b2 is detected as a reference position. Then, a signal is transmitted to the ECU 5.

ＥＣＵ５は、算出手段４からエンジン回転数Ｒを取得した後、表示手段６にエンジン回転数Ｒを表示させる。また、ＥＣＵ５は、算出手段４からエンジン回転数Ｒおよび上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３の信号を取得した後、エンジン１０を前記信号に基づき入力手段７の入力値に従って制御する。   After acquiring the engine speed R from the calculation means 4, the ECU 5 displays the engine speed R on the display means 6. 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.

次に、図４を用いて本発明の第一実施形態に係るエンジン回転数検出装置１の検出手段３の位置決め態様について説明する。   Next, the positioning aspect of the detection means 3 of the engine speed detector 1 according to the first embodiment of the present invention will be described with reference to FIG.

検出手段３は、検出用孔２ａを基準として固定具１２に固定される。検出手段３は、位置決め冶具３ａによって位置決めされる。   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.

位置決め冶具３ａは、一側が検出用孔２ａと隙間なく嵌合可能な凸部に形成され、他側が検出手段３と隙間なく嵌合可能な凹部に形成される。   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.

位置決め冶具３ａは、第一ピストンおよび第６ピストンが上死点位置ＴＤＣ１にあるとき、クランク軸１１の真上に位置する欠孔２ｂからフライホイール２の回転方向と逆方向へ回転角度θ１の位置にある検出用孔２ａに、一側の凸部を嵌合させ、他側の凹部に検出手段３を嵌合することで検出手段３の位置を決定する。検出手段３は、位置決め冶具３ａに位置決めされた状態で固定具１２にナット３ｂにより固定される。   When the first piston and the sixth piston are at the top dead center position TDC1, the positioning jig 3a is positioned at a rotational angle θ1 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.

以上の如く、エンジン１０のクランク軸１１と連動して回転し、複数の検出用孔２ａが回転軸を中心とする円周上に回転軸と平行に形成されるフライホール２と、検出用孔２ａを検出する検出手段３と、検出手段３からの検出信号に基づきエンジン回転数Ｒおよびピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出する算出手段４と、を具備することを特徴とするものである。
このように構成することで、リングギア等の欠損などによる検出誤差や誤検出が発生しない。これにより、新たな検出手段を追加することなく、安定的に正確なエンジン回転数Ｒおよびピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出することができる。 As described above, 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. Is.
With this configuration, no detection error or erroneous detection due to a loss of a ring gear or the like does not occur. 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.

また、複数の検出用孔２ａは、等角度間隔に形成されるとともに、一つを欠孔２ｂとすることを特徴とするものである。
このように構成することで、容易に基準位置を検出することができる。これにより、新たな検出手段を追加することなく、安定的に正確なエンジン回転数Ｒおよびピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出することができる。 The plurality of detection holes 2a are formed at equiangular intervals, and one of them is a missing hole 2b.
With this configuration, the reference position can be easily detected. 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.

また、検出手段３は、一側が検出用孔２ａと嵌合し、他側が検出手段３と嵌合する位置決め冶具３ａによって位置決め可能に構成されることを特徴とするものである。
このように構成することで、検出用孔２ａの位置に基づいて正確に検出手段３を配設することができる。これにより、新たな検出手段を追加することなく、安定的に正確なエンジン回転数Ｒおよびピストンの上死点位置ＴＤＣ１、ＴＤＣ２、ＴＤＣ３を算出することができる。 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 | positioned correctly based on the position of the hole 2a for a detection. 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.

１ エンジン回転数検出装置
２ フライホイール
２ａ 検出用孔
３ 検出手段
４ 算出手段
Ｒ エンジン回転数
１１ クランク軸
ＴＤＣ１ 上死点位置
ＴＤＣ２ 上死点位置
ＴＤＣ３ 上死点位置 DESCRIPTION OF SYMBOLS 1 Engine speed detection apparatus 2 Flywheel 2a Detection hole 3 Detection means 4 Calculation means R Engine speed 11 Crankshaft TDC1 Top dead center position TDC2 Top dead center position TDC3 Top dead center position

Claims (3)

エンジンのクランク軸と連動して回転し、複数の検出用孔が板面の回転軸を中心とする同一円上に回転軸と平行に形成されるフライホールと、
前記検出用孔を検出する検出手段と、
前記検出手段からの検出信号に基づきエンジン回転数およびピストンの上死点位置を算出する算出手段と、
を具備するエンジン回転数検出装置。 A flyhole that rotates in conjunction with the crankshaft of the engine, and a plurality of detection holes are formed in parallel with the rotation axis on the same circle centered on the rotation axis of the plate surface;
Detection means for detecting the detection hole;
Calculation means for calculating the engine speed and the top dead center position of the piston based on the detection signal from the detection means;
An engine speed detection device comprising: 複数の前記検出用孔は、
等角度間隔に形成されるとともに、一つを欠孔とすることを特徴とする請求項１に記載のエンジン回転数検出装置。 The plurality of detection holes are
2. The engine speed detecting device according to claim 1, wherein the engine speed detecting device is formed at equiangular intervals, and one is formed as a notched hole. 前記検出手段は、一側が前記検出用孔と嵌合し、他側が前記検出手段と嵌合する位置決め冶具によって位置決め可能に構成されることを特徴とする請求項１または請求項２に記載のエンジン回転数検出装置。   3. The engine according to claim 1, wherein the detection unit is configured to be positioned by a positioning jig having one side fitted to the detection hole and the other side fitted to the detection unit. Rotational speed detection device.
JP2009036954A 2009-02-19 2009-02-19 Engine speed detector Expired - Fee Related JP5198317B2 (en)

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PCT/JP2010/051957 WO2010095548A1 (en) 2009-02-19 2010-02-10 Engine speed detector

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6119518A (en) * 1984-07-04 1986-01-28 Toyota Motor Corp Production indicator
JPS6119519A (en) * 1984-07-06 1986-01-28 Toyota Motor Corp Production indicator
JPH10220263A (en) * 1997-02-03 1998-08-18 Honda Motor Co Ltd Detector for timing pulse of engine
JPH10227272A (en) * 1997-02-12 1998-08-25 Yanmar Diesel Engine Co Ltd Flywheel rotation detection mechanism
JP2003148231A (en) * 2001-11-08 2003-05-21 Toyota Motor Corp Rotational state detecting device and control device for driving force source
JP2006118507A (en) * 2004-10-22 2006-05-11 Doosan Infracore Co Ltd Combustion device control system of engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6119518A (en) * 1984-07-04 1986-01-28 Toyota Motor Corp Production indicator
JPS6119519A (en) * 1984-07-06 1986-01-28 Toyota Motor Corp Production indicator
JPH10220263A (en) * 1997-02-03 1998-08-18 Honda Motor Co Ltd Detector for timing pulse of engine
JPH10227272A (en) * 1997-02-12 1998-08-25 Yanmar Diesel Engine Co Ltd Flywheel rotation detection mechanism
JP2003148231A (en) * 2001-11-08 2003-05-21 Toyota Motor Corp Rotational state detecting device and control device for driving force source
JP2006118507A (en) * 2004-10-22 2006-05-11 Doosan Infracore Co Ltd Combustion device control system of engine

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