JP2645344B2 - Starting fuel supply system for multiple vaporizers - Google Patents
Starting fuel supply system for multiple vaporizersInfo
- Publication number
- JP2645344B2 JP2645344B2 JP2149188A JP2149188A JP2645344B2 JP 2645344 B2 JP2645344 B2 JP 2645344B2 JP 2149188 A JP2149188 A JP 2149188A JP 2149188 A JP2149188 A JP 2149188A JP 2645344 B2 JP2645344 B2 JP 2645344B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- fuel
- switch
- temperature
- solenoid valve
- 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 - Lifetime
Links
Landscapes
- Means For Warming Up And Starting Carburetors (AREA)
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は複数個の独立した気化器が絞り弁を連動して
配置され,一個のエンジンに混合気を供給するようにな
つている多連気化器のための始動燃料供給装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a multi-unit in which a plurality of independent carburetors are arranged in conjunction with a throttle valve to supply a mixture to one engine. The present invention relates to a starting fuel supply device for a carburetor.
(従来の技術) 複数個の独立した気化器が絞り弁を連動して配置され
ている多連気化器は,船外機と称される小形船舶のエン
ジンに最も多く使用されている。そして,各気化器の吸
気通路の入口にチヨーク弁を設け手動で同一開度に調整
して低温時の始動性向上を計ることも普通に行なわれて
いる。(Prior Art) A multiple carburetor in which a plurality of independent carburetors are arranged in conjunction with a throttle valve is most often used in an engine of a small boat called an outboard motor. It is also common practice to provide a chi-yoke valve at the inlet of the intake passage of each carburetor to manually adjust the opening to the same degree to improve startability at low temperatures.
一方,自動車用エンジンのための気化器にあつては低
温時の始動性向上を計るためバイメタルやサーモワツク
スで温度を検知してチヨーク弁開度を制御する自動チヨ
ーク装置や,マイクロコンピユータで温度に応じた制御
信号を発して絞り弁をバイパスさせた補助通路による混
合気供給を制御するシステムを設けることが周知であ
る。On the other hand, in the case of carburetors for automobile engines, in order to improve startability at low temperatures, the temperature is detected by bimetal or thermowax to control the opening of the chiyoke valve, or the microcomputer responds to the temperature. It is known to provide a system for controlling the supply of air-fuel mixture through an auxiliary passage that bypasses the throttle valve by issuing a control signal.
(発明が解決しようとする課題) しかしながら,多連気化器に前記のような自動チヨー
ク装置を採用すると,各気化器のチヨーク弁の連動機構
が複雑化するとともに強大なバイメタルが必要となるな
どの理由から全体が大形化するのを避けられない。ま
た,コンピユータ使用のシステムは小形船舶などのコン
ピユータを搭載しないものには適用不可能である。或は
始動時に各気化器の吸気通路へオン・オフ式電磁弁を開
いて始動燃料を画一的に供給することが簡便な手段とし
て考えられるが,低温から高温までの広い温度域で始動
燃料を常に適正に供給することはできない。(Problems to be Solved by the Invention) However, when the above-mentioned automatic tie-yoke device is employed in the multiple carburetor, the interlocking mechanism of the tie-yoke valve of each carburetor becomes complicated and a strong bimetal is required. It is inevitable that the whole will become larger for a reason. In addition, a computer-based system cannot be applied to a system such as a small ship that does not have a computer. Alternatively, it is conceivable as a simple means to open the on / off type solenoid valve to the intake passage of each carburetor and uniformly supply the starting fuel at the time of starting. However, the starting fuel can be supplied in a wide temperature range from low to high temperatures. Cannot always be supplied properly.
そこで本発明はこのような問題に鑑み,従来の自動チ
ヨーク装置やコンピユータを用いることなく多連気化器
に適正な始動燃料を供給できる装置を提供するために発
明されたものである。In view of the foregoing, the present invention has been devised in order to provide a device that can supply a proper starting fuel to a multiple carburetor without using a conventional automatic chi-yoke device or computer.
(課題を解決するための手段) 前記課題を解決するため,本発明に係る多連気化器の
始動燃料供給装置の第一は,燃料ポンプで加圧された燃
料の主管路およびこれにより分岐して各気化路の吸引通
路に燃料を供給する枝管路と,前記主管路に並列に設置
された燃料計量用の一個の第一絞り口および少なくとも
一個の第二絞り口ならびにこれらを各別に開閉する第一
電磁弁および第二電磁弁と,エンジンの点火スイツチが
起動位置のとき前記第一電磁弁に通電して前記第一絞り
口を開くための第一回路と,低温時に前記点火スイツチ
が点火位置のとき前記第二電磁弁に通電して前記第二絞
り口を開くための温度スイツチを有する第二回路とを具
えている構成とした。(Means for Solving the Problems) In order to solve the problems described above, a first embodiment of a starting fuel supply device for a multiple carburetor according to the present invention includes a main line of fuel pressurized by a fuel pump and a branch line. A branch pipe for supplying fuel to the suction passage of each vaporizing path, one first throttle port and at least one second throttle port for fuel metering installed in parallel with the main pipe, and individually opening and closing them. A first solenoid valve, a second solenoid valve, a first circuit for energizing the first solenoid valve when the ignition switch of the engine is in the starting position to open the first throttle port, and the ignition switch for low temperature. A second circuit having a temperature switch for opening the second throttle port by energizing the second solenoid valve at the ignition position.
次に本発明の始動燃料供給装置の第二は,前記第一の
構成に加えて点火スイツチが点火位置のとき通電して接
点を加熱し開かせる抵抗発熱体が温度スイツチに付設さ
れている構成とした。Next, a second aspect of the starting fuel supply device according to the present invention is that, in addition to the first configuration, a resistance heating element that is energized when the ignition switch is at the ignition position to heat and open the contacts is attached to the temperature switch. And
また,本発明の始動燃料供給装置の第三は,前記第一
の構成に加えて第一回路と第二回路とを接続した補正回
路と,温度スイツチを経て第二電磁弁にエンジンの完爆
前は前記補正回路によつて電流を供給し完爆後は前記第
二回路によつて電流を供給するように前記補正回路と第
二回路とに設けられ互いに反対の開閉動作をする起動ス
イツチおよび完爆スイツチとを具えている構成とした。The third aspect of the starting fuel supply device of the present invention is a correction circuit connecting the first circuit and the second circuit in addition to the first configuration, and a complete combustion of the engine to the second solenoid valve via the temperature switch. A start switch which is provided in the correction circuit and the second circuit so that the current is supplied by the correction circuit before and the current is supplied by the second circuit after the completion of the explosion; It was configured to have a complete explosion switch.
更に,本発明の始動燃料供給装置の第四は,前記第一
の構成に加えて点火スイツチが起動位置のとき温度スイ
ツチを経て第二電磁弁に電流を供給するため第一回路と
第二回路とを接続した補正回路と,前記補正回路に設け
られ極低温時にのみ閉じる低温スイツチとを具えている
構成とした。Further, a fourth aspect of the starting fuel supply device of the present invention, in addition to the first configuration, is a first circuit and a second circuit for supplying current to the second solenoid valve via the temperature switch when the ignition switch is in the starting position. And a low-temperature switch provided in the correction circuit and closed only at extremely low temperatures.
(作用) エンジン運転のため点火スイツチを起動位置にすると
第一電磁弁に通電して第一絞り口が開かれ,燃料ポンプ
で加圧された燃料が第一絞り口のみを通って各気化器に
送られる。点火スイツチを点火位置にすると温度スイツ
チが閉じている低温時にのみ第二電磁弁に通電して燃料
が第二絞り口を通って各気化器に送られる。(Operation) When the ignition switch is set to the start position for operating the engine, the first solenoid valve is energized to open the first throttle port, and the fuel pressurized by the fuel pump passes through only the first throttle port to each carburetor. Sent to When the ignition switch is set to the ignition position, the second solenoid valve is energized only at a low temperature when the temperature switch is closed, and fuel is sent to each carburetor through the second throttle port.
温度スイツチに抵抗発熱体を設けた場合は第二絞り口
によつて供給される暖機用の増量燃料が短時間で遮断さ
れる。When a resistance heating element is provided in the temperature switch, the increased fuel for warming-up supplied by the second throttle port is cut off in a short time.
補正回路によつて完爆前に全ての絞り口から燃料を供
給する場合,および補正回路を極低温時にのみ閉成する
場合は低温始動に必要な大量の燃料が供給される。If the correction circuit supplies fuel from all throttle ports before the complete explosion, or if the correction circuit is closed only at extremely low temperatures, a large amount of fuel required for cold start is supplied.
(実 施 例) 本発明の実施例を図面に基づいて説明する。(Example) An example of the present invention will be described with reference to the drawings.
第1図は小形船舶に使用する三気筒汎用エンジン1に
混合気を供給するための三個気化器2A,2B,2Cをそれらの
絞り弁3A,3B,3Cをリンク機構5で連動させて構成した多
連気化器に始動燃料を供給する一例の配置図を示してい
る。FIG. 1 shows a configuration in which three carburetors 2A, 2B, and 2C for supplying an air-fuel mixture to a three-cylinder general-purpose engine 1 used for a small ship are linked with their throttle valves 3A, 3B, and 3C by a link mechanism 5. FIG. 2 is a layout view showing an example of supplying a starting fuel to a multiple vaporizer.
即ち,始動燃料は燃料タンク6から燃料を吸出して加
圧する燃料ポンプ7と加圧された始動燃料を所定圧力に
制御する圧力調整器8とを有する主管路9より各気化器
2A,2B,2Cに対応して分岐した枝管路10A,10B,10Cを経て
それぞれ吸気通路4A,4B,4Cに絞り弁3A,3B,3Cの下流側で
供給されるようになつている。主管路9には三個の燃料
計量用のジエツトが並列に設置されており,その一個は
エンジンの通常時の始動に必要な最小流量の燃料を供給
する第一絞り口11を形成し,他の二個は低温時の始動に
増量燃料を供給する第二絞り口13,15を形成していると
ともに,第二絞り口13,15で計量される燃料の合計量は
第一絞り口11で計量される燃料と等しいかまたはそれ以
下であるように作られている。また,これらの第一絞り
口11および第二絞り口13,15はオン・オフ式の第一電磁
弁12および第二電磁弁14,16によつて各別に開閉され
る。That is, the starting fuel is supplied to each carburetor 9 through a main pipe 9 having a fuel pump 7 for sucking the fuel from the fuel tank 6 to pressurize the fuel and a pressure regulator 8 for controlling the pressurized starting fuel to a predetermined pressure.
The air is supplied to the intake passages 4A, 4B, 4C via the branch pipes 10A, 10B, 10C branched corresponding to 2A, 2B, 2C, respectively, on the downstream side of the throttle valves 3A, 3B, 3C. In the main line 9, three fuel metering jets are installed in parallel, one of which forms a first throttle port 11 for supplying a minimum flow of fuel required for normal start-up of the engine. Form the second throttle ports 13 and 15 for supplying an increased amount of fuel at the start at low temperature, and the total amount of fuel measured at the second throttle ports 13 and 15 is the first throttle port 11. Made to be less than or equal to the fuel being metered. The first throttle port 11 and the second throttle ports 13 and 15 are individually opened and closed by an on / off type first solenoid valve 12 and second solenoid valves 14 and 16, respectively.
尚,各気化器2A,2B,2Cは主ノズルに至る主燃料通路,
アイドルポート,スローポートに至る低速燃料通路を具
えていることは言うまでもなく,エンジン1が要求する
通常の燃料がこれらの燃料通路によって供給されること
は従来と同じである。Each of the carburetors 2A, 2B and 2C is a main fuel passage to the main nozzle,
Needless to say, a low-speed fuel passage extending to the idle port and the slow port is provided, and the normal fuel required by the engine 1 is supplied through these fuel passages as in the related art.
第2図は点火スイツチ22の位置および温度,更にエン
ジン完爆前後によつて各電磁弁12,14,16の駆動電流を制
御する電気回路の一例を示している。FIG. 2 shows an example of an electric circuit for controlling the drive current of each of the solenoid valves 12, 14, and 16 depending on the position and temperature of the ignition switch 22, and before and after the complete combustion of the engine.
即ち,この電気回路は基本的には蓄電池からなる電源
21にB端子を接続した点火スイツチ22のST端子から第一
電磁弁12のソレノイドに至る第一回路23と,点火スイツ
チ22のIG端子から途中で分岐して第二電磁弁14,16の各
ソレノイドに至る主線24aおよび枝線24b,24cからなる第
二回路24と,枝線24b,24cにそれぞれ設置された温度ス
イツチ25,26とによつて構成されており,温度スイツチ2
5,26の接点25a,26bは低温のとき閉じているが常温とな
つたとき開くようにバイメタルで作られている。That is, this electric circuit is basically a power source consisting of a storage battery.
The first circuit 23 from the ST terminal of the ignition switch 22 having the B terminal connected to the 21 to the solenoid of the first solenoid valve 12 and the second solenoid valves 14 and 16 branching from the IG terminal of the ignition switch 22 on the way. A second circuit 24 comprising a main line 24a and branch lines 24b and 24c leading to the solenoid, and temperature switches 25 and 26 installed on the branch lines 24b and 24c, respectively.
5, 26 contacts 25a, 26b are made of bimetal so that they are closed when the temperature is low, but open when the temperature is normal.
この電気回路によると,点火スイツチ22を操作してB
端子をST端子に接続してスタータモータによりエンジン
1を起動するとき,燃料ポンプ7が運転を開始するとと
もに第一回路23に電源電流が流れて第一電磁弁12を動作
し第一絞り口11を開くことによつてこれより完爆に必要
な始動燃料を各気化器2A,2B,2Cに供給する。このとき第
二回路24は電源21から遮断されているので第二電磁弁え
14,16を動作させず第二絞り口13,15を閉じている。次
に,エンジン1が完爆して点火スイツチ22を操作しB端
子をIG端子に接続してエンジン内の混合気を点火燃焼さ
せるようにしたとき,第一回路23は電源21と遮断されて
第一電磁弁12が第一絞り口11を閉じるとともに第二回路
24に電源電流が供給可能となる。この場合,雰囲気温度
が常温のときは温度スイツチ25,26は開いているため第
二電磁弁14,16を動作させないが,常温における完爆後
のエンジン回転は気化器2A,2B,2Cの主燃料通路,低速燃
料通路からの燃料によって維持される。一方,低温のと
きには温度スイツチ25,26が閉じているため電源電流が
流れて第二電磁弁14,16を動作し第二絞り口13,15を開く
ことによつて完爆後に要求される始動燃料を各気化器2
A,2B,2Cに供給するのである。暖機が進んで雰囲気温度
が常温近くになるとバイメタル式の接点25a,25bが開い
て第二電磁弁14,16を電源21から遮断し第二絞り口13,15
を閉じ,これによつて始動燃料の供給が終る。 尚,温
度スイツチ25,26はエンジン温度を感知して暖機状態に
対応できるようにエンジン1の本体に取付けるかまたは
その近くに設置するのが好ましい。According to this electric circuit, the ignition switch 22 is operated to
When the terminal is connected to the ST terminal and the engine 1 is started by the starter motor, the fuel pump 7 starts operating, and a power supply current flows through the first circuit 23 to operate the first solenoid valve 12 and operate the first throttle port 11. , The starting fuel necessary for the complete explosion is supplied to each of the carburetors 2A, 2B and 2C. At this time, since the second circuit 24 is disconnected from the power supply 21, the second solenoid valve is
The second apertures 13, 15 are closed without operating the apertures 14, 16. Next, when the engine 1 completes the explosion and operates the ignition switch 22 to connect the B terminal to the IG terminal to ignite and burn the air-fuel mixture in the engine, the first circuit 23 is cut off from the power supply 21. The first solenoid valve 12 closes the first throttle port 11 and the second circuit
24 can be supplied with power supply current. In this case, when the ambient temperature is normal temperature, the temperature switches 25 and 26 are open and the second solenoid valves 14 and 16 are not operated, but the engine rotation after the complete explosion at normal temperature is the main operation of the carburetors 2A, 2B and 2C. The fuel is maintained by the fuel from the fuel passage and the low-speed fuel passage. On the other hand, when the temperature is low, since the temperature switches 25 and 26 are closed, the power supply current flows, the second solenoid valves 14 and 16 are operated, and the second throttle ports 13 and 15 are opened. Fuel each carburetor 2
A, 2B, and 2C are supplied. When the warm-up progresses and the ambient temperature becomes close to room temperature, the bimetallic contacts 25a and 25b open to shut off the second solenoid valves 14 and 16 from the power supply 21 and to close the second throttle ports 13 and 15
Is closed, thereby ending the supply of starting fuel. It is preferable that the temperature switches 25 and 26 are attached to the main body of the engine 1 or installed near the engine 1 so as to sense the engine temperature and cope with a warm-up state.
第2図の実施例では前記の基本構成に加えて,接点25
a,26aを加熱する抵抗発熱体25b,26bを有する加熱回路27
b,27cが各枝線24b,24cから更に分岐して設けられてい
る。従つて,第二回路24が電源21と接続されたとき温度
スイツチ25,26に付設したこれらの抵抗発熱体25b,26bが
接点25a,26aを加熱して開かせることにより,自動チヨ
ーク装置におけるチヨーク作用の早期解除と同じ効果を
もたせ,燃料の経済性,排気組成の改善を計ることがで
きる。In the embodiment of FIG. 2, the contact 25
a heating circuit 27 having resistance heating elements 25b and 26b for heating a and 26a
b and 27c are provided further branched from the branch lines 24b and 24c. Accordingly, when the second circuit 24 is connected to the power supply 21, these resistance heating elements 25b and 26b attached to the temperature switches 25 and 26 heat the contacts 25a and 26a to open the contacts, thereby making the connection in the automatic yoke apparatus. It has the same effect as early release of action, and can improve fuel economy and exhaust composition.
更に,第2図の実施例では前記の基本構成に加えて,
第二回路24の主線24aにエンジン1が完爆したとき第二
回路24を完成可能とする完爆スイツチ28が設けられてい
る。この完爆スイツチ28の駆動部29は,負圧室29aに導
入されるエンジン1の吸入負圧が戻しばね29bのばね力
にうち勝つたときダイヤフラム29cが吸引されその中心
部に固着した完爆スイツチ28の接点28aを閉じさせる構
成であつて,完爆前の比較的低い吸入負圧ではダイヤフ
ラム29cは動作しない。また,この場合は第一回路23か
ら分岐して枝線24b,24c更に加熱回路27b,27bに接続され
た補正回路30が設けられており,この補正回路30はダイ
ヤフラム29cに固着され完爆スイツチ28と連動して反対
の開閉動作をする接点31aを有する起動スイツチ31によ
つて開閉される。Further, in the embodiment of FIG. 2, in addition to the above-described basic configuration,
A complete explosion switch 28 is provided on the main line 24a of the second circuit 24 so that the second circuit 24 can be completed when the engine 1 completely explodes. The drive unit 29 of the complete explosion switch 28 is configured such that when the suction negative pressure of the engine 1 introduced into the negative pressure chamber 29a exceeds the spring force of the return spring 29b, the diaphragm 29c is sucked and the complete explosion fixed to the center thereof. The contact 28a of the switch 28 is closed, and the diaphragm 29c does not operate at a relatively low suction negative pressure before the complete explosion. In this case, a correction circuit 30 branched from the first circuit 23 and connected to branch lines 24b and 24c and heating circuits 27b and 27b is provided. The correction circuit 30 is fixed to a diaphragm 29c and is a complete explosion switch. It is opened and closed by a start switch 31 having a contact 31a that opens and closes in the opposite direction in conjunction with 28.
この構成によると,点火スイツチ22のB端子をST端子
に接続してエンジン1を起動したとき,ダイヤフラム29
cに固着された起動スイツチ31の接点31aが閉じているた
め,低温時には第二電磁弁14,16も動作して全ての絞り
口11,13,15を開いて大量の始動燃料が供給され,B端子を
IG端子に接続した後は第二絞り口13,15のみから引続い
て始動燃料が供給される。補正回路30を具えているとき
はエンジン起動と同時に抵抗発熱体25b,26bが接点25a,2
6bの加熱を開始することとなる。According to this configuration, when the engine 1 is started with the B terminal of the ignition switch 22 connected to the ST terminal, the diaphragm 29
Since the contact 31a of the start switch 31 fixed to c is closed, the second solenoid valves 14, 16 also operate at low temperatures to open all the throttle ports 11, 13, 15 to supply a large amount of starting fuel, B terminal
After the connection to the IG terminal, the starting fuel is continuously supplied only from the second throttle ports 13 and 15. When the correction circuit 30 is provided, the resistance heating elements 25b and 26b
The heating of 6b will be started.
更にまた,第2図の実施例では補正回路30に極低温時
にのみ閉じるバイメタル式の低温スイツチ32が設けられ
ており,冬期の寒冷地などで起動時に全ての絞り口11,1
3,15から始動燃料が供給されるようになつている。もつ
とも,このような低温スイツチ32が設けられるときは起
動スイツチ31を設けなくてもよい。Further, in the embodiment shown in FIG. 2, the correction circuit 30 is provided with a bimetal-type low-temperature switch 32 that is closed only at extremely low temperatures.
Starting fuel is supplied from 3,15. However, when such a low-temperature switch 32 is provided, the start switch 31 may not be provided.
尚,第二絞り口13,15は一個または三個以上設ける場
合があり,複数個からなるときそれらの口径は等しいも
のであつてもよいが,異なる口径のものを配置して対応
する第二電磁弁14,16の電流遮断時期が温度によつて異
なるように温度スイツチ25,26の特性を設定すれば温度
に対応して始動燃料を更にきめこまかく制御することが
できる。One or three or more second throttle ports 13 and 15 may be provided. When a plurality of second throttle ports are provided, they may have the same diameter. If the characteristics of the temperature switches 25 and 26 are set so that the current cutoff timings of the solenoid valves 14 and 16 differ depending on the temperature, the starting fuel can be more finely controlled in accordance with the temperature.
(発明の効果) 本発明によると,各気化器に始動燃料を枝管路によつ
て分配供給するに先立ち点火スイツチの起動位置,点火
位置に応じて第一絞り口,第二絞り口による燃料流量の
切換えを行なわせるとともに,点火位置としたときには
低温時にのみ第二絞り口から燃料が供給されるようにし
たものであるから,点火スイツチに連動した電磁弁の動
作制御による簡単なシステムで全体を著しく複雑且つ大
形化することなく始動燃料を温度に応じて供給できるも
のである。そして,点火位置のとき第二電磁弁に通電す
る第二回路の温度スイツチを抵抗発熱体で加熱し短時間
で燃料を遮断させることにより,燃料の経済性や排気組
成の改善を計ることができる。(Effect of the Invention) According to the present invention, prior to distributing and supplying the starting fuel to each carburetor through the branch line, the fuel is supplied from the first throttle port and the second throttle port according to the starting position and the ignition position of the ignition switch. Since the flow rate is switched and fuel is supplied from the second throttle port only at low temperatures when the ignition position is set, a simple system based on the operation control of the solenoid valve linked to the ignition switch is used. The starting fuel can be supplied in accordance with the temperature without significantly increasing the size and complexity of the engine. By heating the temperature switch of the second circuit that energizes the second solenoid valve at the ignition position with a resistance heating element and shutting off the fuel in a short time, it is possible to improve fuel economy and improve exhaust composition. .
また,補正回路によつて完爆前にも第二絞り口から燃
料を供給する構成によると,低温時に大量の燃料を供給
して始動を確実ならしめるばかりか,完爆後に点火スイ
ツチを起動位置としたままの場合には第二回路が閉成さ
れないため全ての絞り口が閉じ,燃料を過度に送つてエ
ンジンを停止させるという不都合を生じさせないのであ
る。更に,補正回路を極低温時にのみ閉成する場合も低
温時に大量の燃料を供給するものであり,いずれの構成
のものも絞り口の口径を適宜に設定することにより低温
から高温までの広い温度域で始動燃料を常に適正に供給
できる。According to the configuration in which the fuel is supplied from the second throttle port even before the complete explosion by the correction circuit, not only does a large amount of fuel be supplied at low temperatures to ensure the start, but also the ignition switch is set to the starting position after the complete explosion. In this case, since the second circuit is not closed, all the throttle ports are closed, so that there is no disadvantage that excessive fuel is supplied to stop the engine. Furthermore, even when the correction circuit is closed only at extremely low temperatures, a large amount of fuel is supplied at low temperatures. In any case, the wide range of temperatures from low to high can be set by appropriately setting the diameter of the throttle port. The starting fuel can always be supplied properly in the region.
第1図は本発明の実施例の配置図,第2図は電気回路の
実施例を示す回路図である。 1……エンジン,2A,2B,2C……気化器,4A,4B,4C……吸気
通路,7……燃料ポンプ,9……主管路,10A,10B,10C……枝
管路,11……第一絞り口,13,15……第二絞り口,12……第
一電磁弁,14,16……第二電磁弁,22……点火スイツチ,23
……第一回路,24……第二回路,25,26……温度スイツチ,
25a,25b……接点,25b,26b……抵抗発熱体,28……完爆ス
イツチ,29……駆動部,30……補正回路,31……起動スイ
ツチ,32……低温スイツチ,FIG. 1 is a layout diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram showing an embodiment of an electric circuit. 1 ... engine, 2A, 2B, 2C ... carburetor, 4A, 4B, 4C ... intake passage, 7 ... fuel pump, 9 ... main pipeline, 10A, 10B, 10C ... branch pipeline, 11 ... … First throttle port, 13,15 …… Second throttle port, 12 …… First solenoid valve, 14,16… Second solenoid valve, 22 …… Ignition switch, 23
…… First circuit, 24 …… Second circuit, 25,26 …… Temperature switch,
25a, 25b contact, 25b, 26b resistance heating element, 28 complete explosion switch, 29 driving unit, 30 correction circuit, 31 start-up switch, 32 low-temperature switch,
Claims (4)
路(9)およびこれより分岐して各気化器(2A,2B,2C)
の吸引通路(4A,4B,4C)に燃料を供給する枝管路(10A,
10B,10C)と、前記主管路(9)に並列に設置された燃
料計量用の一個の第一絞り口(11)および少なくとも一
個の第二絞り口(13,15)ならびにこれらを各別に開閉
する第一電磁弁(12)および第二電磁弁(14,16)と、
エンジン(1)の点火スイッチ(22)が起動位置のとき
前記第一電磁弁(12)に通電して前記第一絞り口(11)
を開くための第一回路(23)と、低温時に前記点火スイ
ッチ(22)が点火位置のとき前記第二電磁弁(14,16)
に通電して前記第二絞り口(13,15)を開くための温度
スイッチ(25,26)を有する第二回路(24)とを具えて
いることを特徴とする多連気化器の始動燃料供給装置。1. A main line (9) for fuel pressurized by a fuel pump (7) and a branch from the main line (9) for each of the carburetors (2A, 2B, 2C).
To supply fuel to the suction passages (4A, 4B, 4C)
10B, 10C), one first throttle port (11) and at least one second throttle port (13, 15) for fuel metering installed in parallel with the main line (9), and individually opening and closing them. A first solenoid valve (12) and a second solenoid valve (14, 16)
When the ignition switch (22) of the engine (1) is in the starting position, the first solenoid valve (12) is energized to supply the first throttle port (11).
A first circuit (23) for opening the second solenoid valve (14, 16) when the ignition switch (22) is in the ignition position at a low temperature
A second circuit (24) having a temperature switch (25, 26) for energizing the second throttle port (13, 15) to open the second throttle port (13, 15). Feeding device.
して接点(25a,26a)を加熱し開かせる抵抗発熱体(25
b,26b)が温度スイッチ(25,26)に付設されていること
を特徴とする請求項(1)記載の多連気化器の始動燃料
供給装置。2. A resistance heating element (25) which energizes when the ignition switch (22) is in an ignition position to heat and open the contacts (25a, 26a).
3. The fuel supply system for a multiple carburetor according to claim 1, wherein the temperature switch is attached to the temperature switch.
した補正回路(30)と、温度スイッチ(25,26)を経て
第二電磁弁(14,16)にエンジン(1)の完爆前は前記
補正回路(30)によって電流を供給し完爆後は前記第二
回路(24)によって電流を供給するように前記補正回路
(30)と第二回路(24)とに設けられ互いに反対の開閉
動作をする起動スイッチ(31)および完爆スイッチ(2
8)とを具えていることを特徴とする請求項(1)記載
の多連気化器の始動燃料供給装置。3. A correction circuit (30) connecting a first circuit (23) and a second circuit (24), and an engine (14) to a second solenoid valve (14, 16) via a temperature switch (25, 26). Before the complete explosion of 1), the correction circuit (30) and the second circuit (24) supply the current by the correction circuit (30) and supply the current by the second circuit (24) after the complete explosion. The start switch (31) and the complete explosion switch (2
8. The starting fuel supply device for a multiple carburetor according to claim 1, further comprising (8).
スイッチ(25,26)を経て第二電磁弁(14,16)に電流を
供給するため第一回路(23)と第二回路(24)とを接続
した補正回路(30)と、前記補正回路(30)に設けられ
極低温時にのみ閉じる低温スイッチ(32)とを具えてい
ることを特徴とする請求項(1)記載の多連気化器の始
動燃料供給装置。4. A first circuit (23) and a second circuit (23) for supplying current to the second solenoid valves (14, 16) via the temperature switches (25, 26) when the ignition switch (22) is in the starting position. The correction circuit (30) connected to the correction circuit (24) and a low-temperature switch (32) provided in the correction circuit (30) and closed only at an extremely low temperature. Starter fuel supply device for the carburetor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2149188A JP2645344B2 (en) | 1988-02-01 | 1988-02-01 | Starting fuel supply system for multiple vaporizers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2149188A JP2645344B2 (en) | 1988-02-01 | 1988-02-01 | Starting fuel supply system for multiple vaporizers |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01195958A JPH01195958A (en) | 1989-08-07 |
JP2645344B2 true JP2645344B2 (en) | 1997-08-25 |
Family
ID=12056444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2149188A Expired - Lifetime JP2645344B2 (en) | 1988-02-01 | 1988-02-01 | Starting fuel supply system for multiple vaporizers |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2645344B2 (en) |
-
1988
- 1988-02-01 JP JP2149188A patent/JP2645344B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01195958A (en) | 1989-08-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5450832A (en) | Dual fuel system | |
US3646924A (en) | Fuel system for gaseous fueled engines | |
JP2645344B2 (en) | Starting fuel supply system for multiple vaporizers | |
US4449371A (en) | Air by-pass system in an internal combustion engine with a supercharger | |
US4297980A (en) | Motor vehicle carburetor choke mechanism | |
US4656987A (en) | Pressurized fuel carburetor for an internal combustion engine | |
US4815427A (en) | Fuel enrichment system | |
US2711718A (en) | Gas metering system for carburetor | |
JPS58187577A (en) | Ignition timing control device for internal-combustion engine | |
US4442811A (en) | Method and apparatus for expediting the starting of an internal combustion engine | |
JP2002097952A (en) | Exhaust manifold device for vehicle | |
JPH0724608Y2 (en) | Engine fuel controller | |
JPH0415974Y2 (en) | ||
JPH02211366A (en) | Switching-feeding device for two-kinds of fuel for engine | |
JPH02211367A (en) | Switching-feeding device for two-kinds of fuel for engine | |
JPS63243430A (en) | Idling speed controlling method for engine | |
JPH02211365A (en) | Switching-feeding device for two-kinds of fuel for engine | |
JPH022927Y2 (en) | ||
JPS581644Y2 (en) | Engine intake air heating device | |
JPS6321713Y2 (en) | ||
JPS61152962A (en) | Fuel injection device for internal-combustion engine with supercharger | |
JPS581640Y2 (en) | Engine warm-up state detection device | |
JPS58155266A (en) | Intake air heating device in internal-combustion engine | |
JPS61275551A (en) | Carburetor starter for internal-combustion engine | |
JPH02199261A (en) | Starting assisting device for engine |