JPH0115698B2 - - Google Patents
Info
- Publication number
- JPH0115698B2 JPH0115698B2 JP27750384A JP27750384A JPH0115698B2 JP H0115698 B2 JPH0115698 B2 JP H0115698B2 JP 27750384 A JP27750384 A JP 27750384A JP 27750384 A JP27750384 A JP 27750384A JP H0115698 B2 JPH0115698 B2 JP H0115698B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel tank
- signal
- solenoid valve
- internal combustion
- output
- 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.)
- Expired
Links
- 239000002828 fuel tank Substances 0.000 claims description 26
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 239000000446 fuel Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 244000145845 chattering Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
- F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
- F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は、自動二輪車、船外機、農業機械等に
使用される内燃機関の燃料タンクに接続され、電
磁弁の開閉により燃料の送出と遮断を切り換える
自動燃料コツクの制御装置に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention is connected to a fuel tank of an internal combustion engine used in motorcycles, outboard motors, agricultural machinery, etc., and is connected to a fuel tank of an internal combustion engine used in motorcycles, outboard motors, agricultural machinery, etc. This invention relates to a control device for an automatic fuel tank that switches shutoff.
＜従来の技術＞
従来、自動二輪車等の内燃機関の燃料タンクに
接続される燃料コツクとして、機関の運転、停止
時には自動的に燃料の送出と遮断を行なうように
電磁弁を設けた自動燃料コツクが、実公昭46−
23606号公報により提案されている。<Prior art> Conventionally, automatic fuel tanks have been used as fuel tanks connected to the fuel tanks of internal combustion engines such as motorcycles, and are equipped with solenoid valves to automatically supply and shut off fuel when the engine is running or stopping. However, in 1977,
This is proposed by Publication No. 23606.
＜発明が解決しようとする問題点＞
しかしながら、上記自動燃料コツクは、内燃機
関によつて駆動される発電機の出力側に接続され
た電磁開閉器によりその電磁弁が制御され、自動
二輪車等の始動時に、キツクなどによつてクラン
キングを行なつた時、発電機からは0.2秒程度の
幅のトリガパルスが0.5秒程度の間隔で出力され
るのみであるため、始動時には電磁開閉器がチヤ
タリングを起し、自動燃料コツクの電磁弁が正常
に開かない問題があつた。また、このように内燃
機関の始動時に電磁弁が開かない場合、特に製品
の出荷時や内燃機関が長期間放置され、燃料が気
化器のフロート室に残つていない場合には、始動
不良を起す問題があつた。<Problems to be Solved by the Invention> However, in the above-mentioned automatic fuel tank, the solenoid valve is controlled by an electromagnetic switch connected to the output side of a generator driven by an internal combustion engine. At startup, when cranking is performed using a crank, etc., the generator only outputs trigger pulses with a width of about 0.2 seconds at intervals of about 0.5 seconds, so the electromagnetic switch will chatter at startup. There was a problem where the solenoid valve of the automatic fuel tank did not open properly. In addition, if the solenoid valve does not open when starting the internal combustion engine, it may cause a starting failure, especially if the product has been shipped or the internal combustion engine has been left unused for a long time and no fuel remains in the float chamber of the carburetor. I had a problem.
＜問題点を解決するための手段＞
本発明は、上記の点にかんがみなされたもの
で、内燃機関始動時のクランキング時から燃料コ
ツクを開閉する電磁弁を正常に開放させ、始動不
良を防止し得る自動燃料コツクの制御装置を提供
するものであり、以下のように構成される。<Means for Solving the Problems> The present invention has been made in view of the above points, and prevents starting failure by normally opening the solenoid valve that opens and closes the fuel tank from the cranking time when starting the internal combustion engine. The purpose of the present invention is to provide a control device for an automatic fuel tank, which is configured as follows.
すなわち、本発明は、第１図の全体構成図に示
すように、電磁弁５により開閉される自動燃料コ
ツクの制御装置において、内燃機関により駆動さ
れる発電機又はパルス発生器１に接続され入力信
号のレベルを基準値と比較し、基準値以上の信号
入力時に信号を出力する比較回路２と、比較回路
２の出力側に接続され信号入力時に一定時間その
出力を高レベルに保持するホールド回路３と、ホ
ールド回路３の出力側に接続され高レベル信号の
入力時に燃料コツクの電磁弁５に電流を通電させ
るスイツチング回路４とを具えて構成される。 That is, as shown in the overall configuration diagram of FIG. A comparison circuit 2 that compares the signal level with a reference value and outputs a signal when the signal is input above the reference value, and a hold circuit that is connected to the output side of the comparison circuit 2 and holds the output at a high level for a certain period of time when a signal is input. 3, and a switching circuit 4 which is connected to the output side of the hold circuit 3 and energizes the solenoid valve 5 of the fuel tank when a high level signal is input.
＜実施例＞
以下、本発明の実施例を図面に基づいて説明す
る。<Example> Hereinafter, an example of the present invention will be described based on the drawings.
先ず、第２図により自動燃料コツクの構造を簡
単に説明すると、６は内部に燃料通路６ａを設け
た燃料コツク本体で、上部に開口する燃料の流入
口にはフイルタ７が被せられ、側部には燃料の送
出口８が設けられる。電磁弁５は燃料コツク本体
の下部に取付けられ、その弁体５ａは燃料通路６
ａを閉鎖するように設けられ、弁体５ａを上部に
固着したプランジヤ５ｂはソレノイド５ｃの内部
に挿入され、弁体５ａは非通電時にはコイルばね
５ｄにより閉鎖方向に付勢され、ソレノイド５ｃ
への通電により弁体５ａは開放される構造であ
る。 First, the structure of the automatic fuel tank will be briefly explained with reference to FIG. is provided with a fuel outlet 8. The solenoid valve 5 is attached to the lower part of the fuel tank body, and its valve body 5a is connected to the fuel passage 6.
A plunger 5b with a valve body 5a fixed to its upper part is inserted into the solenoid 5c, and when the valve body 5a is not energized, it is urged in the closing direction by a coil spring 5d, and the plunger 5b closes the solenoid 5c.
The valve body 5a is structured to be opened when energized.
第３図は上記自動燃料コツクの制御装置の回路
図を示す。２はコンパレータ１１により構成され
た比較回路で、コンパレータ１１の入力側には内
燃機関によつて駆動される発電機１０が抵抗Ｒ１
を介して接続され、さらに、コンパレータ１１に
は抵抗Ｒ２，Ｒ３で分圧された基準電圧が印加さ
れるように接続される。３は比較回路２の出力側
に接続されたホールド回路で、単安定マルチバイ
ブレータ１２によつて構成され、この単安定マル
チバイブレータ１２に接続されるコンデンサC1
の容量は、入力信号によつてトリガされた際、こ
の単安定マルチバイブレータから出力される高レ
ベル信号の時間幅が例えば３秒程度となるように
設定される。４はホールド回路３の出力側に接続
されたスイツチング回路で、トランジスタ１３に
より構成され、そのコレクタ回路には燃料コツク
に取付けた電磁弁５が接続され、ホールド回路３
から高レベル信号が入力されると、コレクタ、エ
ミツタ間が導通し、電磁弁５に電流を流す構造で
ある。 FIG. 3 shows a circuit diagram of the control device for the automatic fuel tank. 2 is a comparison circuit composed of a comparator 11, and a generator 10 driven by an internal combustion engine is connected to a resistor R1 on the input side of the comparator 11.
Further, the comparator 11 is connected so that a reference voltage divided by resistors R2 and R3 is applied thereto. 3 is a hold circuit connected to the output side of the comparator circuit 2, which is composed of a monostable multivibrator 12, and a capacitor C 1 connected to this monostable multivibrator 12.
The capacitance of is set so that the time width of the high level signal output from this monostable multivibrator when triggered by an input signal is, for example, about 3 seconds. Reference numeral 4 denotes a switching circuit connected to the output side of the hold circuit 3, which is composed of a transistor 13, and a solenoid valve 5 attached to the fuel tank is connected to its collector circuit.
When a high level signal is input from the solenoid valve 5, conduction occurs between the collector and the emitter, causing current to flow through the solenoid valve 5.
次に、上記制御装置の動作を説明すると、先
ず、自動二輪車等の始動時にその内燃機関がキツ
ク等によりクランキングされると、発電機１０か
ら第４図の波形ａに示すようなトリガ状のパルス
信号が約0.5秒以下の間隔で出力される。このパ
ルス信号は比較回路２のコンパレータ１１に送ら
れ、コンパレータ１１では入力信号のレベルが基
準電圧と比較され、基準電圧以上の入力信号時
に、波形ｂに示すような一定レベルのパルス信号
が出力される。このパルス信号はホールド回路３
の単安定マルチバイブレータ１２に印加され、波
形ｂのパルス信号の立上りでトリガされることに
より単安定マルチバイブレータ１２からはコンデ
ンサC1によつて設定された、例えば３秒のパル
ス幅Ｔをもつパルス信号が出力される。一方、発
電機１０から出力されるトリガ状のパルス信号は
長くても約0.5秒間隔で出力され、単安定マルチ
バイブレータ１２は約0.5秒の時間間隔でトリガ
されることになるため、ホールド回路３からは連
続して高レベルとなる波形Ｃの信号が出力され
る。そして、波形Ｃのように連続した高レベル信
号がスイツチング回路４のトランジスタ１３のベ
ースに印加されてトランジスタ１３は導通し、電
磁弁５に電流が流れて電磁弁５は励磁されその弁
体５ａが開かれる。これにより燃料コツクが開か
れ燃料タンク内の燃料が燃料通路を通つて気化器
に送られるが、発電機１０からのパルス信号が消
えてから約３秒間はホールド回路３の出力が高レ
ベルに維持されるため、この間電磁弁５は励磁さ
れて開くことから、１回のキツクが終り、次のキ
ツクが約３秒以内に行なわれれば、キツクによる
クランキング中は継続して燃料コツクの電磁弁５
が開かれる。したがつて、内燃機関始動時のクラ
ンキング中は常に燃料コツクを開いて燃料が送出
されるため、燃料不足による始動不良は防止され
る。そして、内燃機関が始動し、一定の回転数以
上となれば、発電機の出力電圧はほぼ一定の直流
電圧となるため、ホールド回路３の出力は常に高
レベルに保持され、運転中の電磁弁は常に開放状
態となる。 Next, to explain the operation of the above-mentioned control device, first, when the internal combustion engine of a motorcycle or the like is cranked by a kick or the like, a trigger-like signal as shown in waveform a in FIG. 4 is generated from the generator 10. Pulse signals are output at intervals of about 0.5 seconds or less. This pulse signal is sent to the comparator 11 of the comparison circuit 2, where the level of the input signal is compared with the reference voltage, and when the input signal is higher than the reference voltage, a pulse signal of a constant level as shown in waveform b is output. Ru. This pulse signal is applied to the hold circuit 3.
is applied to the monostable multivibrator 12, and triggered by the rising edge of the pulse signal of waveform b, the monostable multivibrator 12 outputs a pulse having a pulse width T of, for example, 3 seconds, set by the capacitor C1 . A signal is output. On the other hand, the trigger-like pulse signal output from the generator 10 is output at intervals of approximately 0.5 seconds at the longest, and the monostable multivibrator 12 is triggered at intervals of approximately 0.5 seconds, so the hold circuit 3 A signal of waveform C that is continuously at a high level is outputted from. Then, a continuous high level signal as shown in waveform C is applied to the base of the transistor 13 of the switching circuit 4, the transistor 13 becomes conductive, current flows through the solenoid valve 5, the solenoid valve 5 is energized, and its valve body 5a is turned on. be opened. This opens the fuel tank and sends the fuel in the fuel tank to the carburetor through the fuel passage, but the output of the hold circuit 3 remains at a high level for about 3 seconds after the pulse signal from the generator 10 disappears. During this period, the solenoid valve 5 is energized and opened. Therefore, if one cranking is completed and the next cranking is performed within about 3 seconds, the solenoid valve 5 of the fuel tank will continue to open during cranking by the cranking. 5
will be held. Therefore, during cranking when starting the internal combustion engine, the fuel tank is always opened and fuel is delivered, thereby preventing starting failures due to lack of fuel. When the internal combustion engine starts and reaches a certain number of revolutions, the output voltage of the generator becomes a nearly constant DC voltage, so the output of the hold circuit 3 is always held at a high level, and the solenoid valve during operation is always open.
なお、内燃機関の始動時に発電機から出力され
るパルス信号は、イグニツシヨン回路などからも
得ることができるため、発電機５に代えてイグニ
ツシヨン回路等のパルス発生器を使用することも
できる。 Note that since the pulse signal output from the generator when starting the internal combustion engine can also be obtained from an ignition circuit or the like, a pulse generator such as an ignition circuit may be used instead of the generator 5.
＜発明の効果＞
以上説明したように、本発明の自動燃料コツク
の制御装置によれば、内燃機関の始動時のクラン
キング中に発生するトリガ状のパルスをとらえ、
このパルスをホールド回路により一定時間ホール
ドし、ホールド回路の出力でスイツチング回路を
動作させて燃料コツクの電磁弁を制御するように
構成したから、キツクなどによるクランキング中
は常に電磁弁が開放状態となつて電磁弁のチヤタ
リングは発生せず、開放された燃料コツクから充
分な量の燃料が気化器に送られ、始動不良を起さ
ずに短いクランキングで確実に内燃機関の始動を
行なうことができる。<Effects of the Invention> As explained above, according to the automatic fuel tank control device of the present invention, a trigger-like pulse generated during cranking at the time of starting an internal combustion engine is captured,
This pulse is held for a certain period of time by a hold circuit, and the output of the hold circuit operates a switching circuit to control the solenoid valve of the fuel tank, so the solenoid valve is always open during cranking due to a crank. As a result, chattering of the solenoid valve does not occur, and a sufficient amount of fuel is sent to the carburetor from the open fuel tank, making it possible to start the internal combustion engine reliably with short cranking without causing starting problems. can.
第１図は本発明の全体構成図、第２図乃至第４
図は本発明の実施例を示し、第２図は自動燃料コ
ツクの断面図、第３図は制御装置の回路図、第４
図は波形図である。
１……発電機又はパルス発生器、２……比較回
路、３……ホールド回路、４……スイツチング回
路、５……電磁弁。
Figure 1 is an overall configuration diagram of the present invention, Figures 2 to 4
The figures show an embodiment of the present invention, Fig. 2 is a sectional view of an automatic fuel tank, Fig. 3 is a circuit diagram of a control device, and Fig. 4 is a sectional view of an automatic fuel tank.
The figure is a waveform diagram. 1... Generator or pulse generator, 2... Comparison circuit, 3... Hold circuit, 4... Switching circuit, 5... Solenoid valve.
Claims (1)
御装置において、内燃機関により駆動される発電
機又はパルス発生器に接続され入力信号のレベル
を基準値と比較し基準値以上の信号入力時に信号
を出力する比較回路と、該比較回路の出力側に接
続され信号入力時に一定時間その出力を高レベル
に保持するホールド回路と、該ホールド回路の出
力側に接続され高レベル信号の入力時に前記電磁
弁に駆動電流を通電させるスイツチング回路を具
えたことを特徴とする自動燃料コツクの制御装
置。1 A control device for an automatic fuel tank that is opened and closed by a solenoid valve, which is connected to a generator or pulse generator driven by an internal combustion engine, compares the level of the input signal with a reference value, and outputs a signal when the signal input exceeds the reference value. a comparator circuit that is connected to the output side of the comparator circuit and holds the output at a high level for a certain period of time when a signal is input; A control device for an automatic fuel tank characterized by comprising a switching circuit for supplying a drive current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27750384A JPS61157750A (en) | 1984-12-29 | 1984-12-29 | Control device of automatic fuel cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27750384A JPS61157750A (en) | 1984-12-29 | 1984-12-29 | Control device of automatic fuel cock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61157750A JPS61157750A (en) | 1986-07-17 |
| JPH0115698B2 true JPH0115698B2 (en) | 1989-03-20 |
Family
ID=17584501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27750384A Granted JPS61157750A (en) | 1984-12-29 | 1984-12-29 | Control device of automatic fuel cock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61157750A (en) |
-
1984
- 1984-12-29 JP JP27750384A patent/JPS61157750A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61157750A (en) | 1986-07-17 |
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