JP3181784B2 - Gas fuel engine fuel cutoff device - Google Patents
Gas fuel engine fuel cutoff deviceInfo
- Publication number
- JP3181784B2 JP3181784B2 JP35188993A JP35188993A JP3181784B2 JP 3181784 B2 JP3181784 B2 JP 3181784B2 JP 35188993 A JP35188993 A JP 35188993A JP 35188993 A JP35188993 A JP 35188993A JP 3181784 B2 JP3181784 B2 JP 3181784B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pressure
- fuel
- shut
- engine
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガス燃料エンジンに送
られるガス燃料の供給を遮断するための燃料遮断装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel cutoff device for cutting off the supply of gaseous fuel sent to a gaseous fuel engine.
【０００２】[0002]
【従来の技術】近年、エネルギー対策、環境対策等の問
題から自動車の燃料として圧縮天然ガス（ＣＮＧ）の使
用が盛んになっているが、かかる天然ガスは、例えばガ
スボンベに高圧で貯蔵されて車体に搭載され、配管を通
してエンジンに供給するようにしている。2. Description of the Related Art In recent years, the use of compressed natural gas (CNG) as fuel for automobiles has become popular due to problems such as energy measures and environmental measures. And is supplied to the engine through piping.
【０００３】そして、例えば特開昭６２−１７０７５９
号の場合は車体の後部にガスボンベを搭載し、このガス
ボンベから車体前部のエンジンに向けてガス燃料配管を
配設しガス燃料を送るようにしている。[0003] For example, Japanese Patent Application Laid-Open No. 62-170759
In the case of No. 2, a gas cylinder is mounted at the rear of the vehicle body, and a gas fuel pipe is arranged from this gas cylinder toward the engine at the front of the vehicle body to send gas fuel.
【０００４】[0004]
【発明が解決しようとする課題】しかし、このように車
体後部から車体前部に向けてガス燃料配管を配設するよ
うな場合、不測事態が生じて燃料配管に異常が発生した
場合にガスの供給を適切に制御する必要があった。However, in such a case where the gas fuel pipe is provided from the rear of the vehicle body to the front of the vehicle body, when an unforeseen situation occurs and an abnormality occurs in the fuel pipe, the gas supply is stopped. Supply had to be properly controlled.
【０００５】[0005]
【課題を解決するための手段】かかる課題を解決するた
め、本発明はタンクから配管を通して送られるガス燃料
をエンジンの燃料噴射部から噴射するようにしたガス燃
料エンジンの燃料遮断装置において、配管に遮断弁を設
け、車体に一定量以上の衝撃が加わると、車体の衝撃を
検出する衝撃センサの接点が離脱し、この離脱により燃
料噴射部の噴射弁を遮断するとともに配管の遮断弁を遮
断するようにした。 SUMMARY OF THE INVENTION In order to solve this problem, the present invention relates to a fuel cutoff device for a gas fuel engine in which gas fuel sent from a tank through a pipe is injected from a fuel injection section of the engine. A shut-off valve is installed, and when a certain amount of impact is applied to the
The contact point of the impact sensor to be detected comes off,
Shut off the injection valve of the fuel injection section and the shutoff valve of the piping.
I refused .
【０００６】[0006]
【作用】車体に異常な衝撃が発生すると、遮断弁を遮断
して燃料の供給を遮断する。このため、燃料供給系統の
配管等の一部に異常が生じても遮断弁で燃料を遮断する
ことが出来る。加えて、同時に燃料噴射部の噴射弁も遮
断するので、速やかに且つ確実にエンジン作動を停止さ
せることが出来る。 [Action] When abnormal impact to the vehicle body occurs, and blocks the shielding sectional valve to shut off the supply of fuel. Therefore, abnormality occurs in a part of the piping of the fuel supply system can be shut off fuel also shielding sectional valve. In addition, since the blocking fuel injection unit of the injection valve at the same time, Ru can be stopped quickly and reliably engine operation.
【０００７】[0007]
【実施例】本発明の燃料遮断装置の実施例について添付
した図面に基づき説明する。図１は燃料供給系統の模式
図、図２は燃料供給系統の車体配置の概要図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the fuel cutoff device of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic diagram of a fuel supply system, and FIG. 2 is a schematic diagram of an arrangement of a vehicle body of the fuel supply system.
【０００８】本発明の燃料遮断装置は、図１、図２に示
すようなガス燃料供給系統によって送られる圧縮天然ガ
ス（ＣＮＧ）燃料を遮断する装置として構成され、この
燃料供給系統の概要は、車両後部のトランクルームに配
設されるＣＮＧタンク１と、このタンク１から取り出し
たガスを車両の前方に送給するキャビン下方の高圧配管
２と、車両前方のエンジンルームに配設されガス圧を減
圧する一次圧力レギュレータ４、二次圧力レギュレータ
５と、減圧されたガスを燃料噴射部としてのインジェク
タ７から噴射するエンジン６を備え、このエンジン６の
排気ガス系統には排ガスを処理する触媒コンバータ８が
設けられている。The fuel cutoff device of the present invention is configured as a device for cutting off compressed natural gas (CNG) fuel sent by a gas fuel supply system as shown in FIGS. 1 and 2, and the outline of this fuel supply system is as follows. A CNG tank 1 provided in a trunk room at the rear of the vehicle, a high-pressure pipe 2 below the cabin for supplying gas taken out of the tank 1 to the front of the vehicle, and a gas pressure reducing device provided at an engine room in front of the vehicle. A primary pressure regulator 4, a secondary pressure regulator 5, and an engine 6 for injecting depressurized gas from an injector 7 as a fuel injection unit. A catalytic converter 8 for treating exhaust gas is provided in an exhaust gas system of the engine 6. Is provided.
【０００９】そして、前記一次圧力レギュレータ４と二
次圧力レギュレータ５によって、当初２００kg/cm2程度
であったガス圧を２．５kg/cm2（ゲージ圧）まで減圧し
エンジンに供給する。従って、キャビン下方の高圧配管
２には、約２００kg/cm2程度の高圧ガスが送給されるこ
とになる。The primary pressure regulator 4 and the secondary pressure regulator 5 reduce the gas pressure from about 200 kg / cm 2 to 2.5 kg / cm 2 (gauge pressure) and supply it to the engine. Therefore, a high-pressure gas of about 200 kg / cm 2 is supplied to the high-pressure pipe 2 below the cabin.
【００１０】前記タンク１には、ガス燃料を補給するた
めのタンク配管１０が接続され、このタンク配管１０は
充填口１２に通じている。A tank pipe 10 for supplying gaseous fuel is connected to the tank 1, and this tank pipe 10 communicates with a filling port 12.
【００１１】また、タンク配管１０が接続される方向と
反対方向のタンク１の側面部には、リリーフバルブ４０
（図１）を設けており、何等かの異常状態によってタン
ク１内圧が上がりすぎた時にリリーフさせるようにして
いる。A relief valve 40 is provided on the side surface of the tank 1 in a direction opposite to the direction in which the tank pipe 10 is connected.
(FIG. 1) is provided so that the tank 1 is relieved when the internal pressure of the tank 1 becomes too high due to some abnormal condition.
【００１２】また、タンク１の出口側には、前記高圧配
管２を接続するとともに、接続部にはソレノイドバルブ
で作動する第１電磁遮断弁１３を設け、この高圧配管２
を車体前方の前記二次圧力レギュレータ４に向けて延出
させている。The high-pressure pipe 2 is connected to the outlet side of the tank 1 and a first electromagnetic shut-off valve 13 operated by a solenoid valve is provided at the connection portion.
Is extended toward the secondary pressure regulator 4 in front of the vehicle body.
【００１３】また、高圧配管２の途中には、タンクガス
圧Ｐ0を検知する圧力センサ１４と、タンクガス温度Ｔ0
を検知する温度センサ１５を備えてなるタンクガス検知
部１６が設けられ、タンクガスの圧力と温度を測定出来
るようにしている。またその下流には、マニュアルでガ
スを遮断する手動遮断弁１７を設けている。A pressure sensor 14 for detecting the tank gas pressure P 0 and a tank gas temperature T 0 are provided in the middle of the high pressure pipe 2.
Is provided with a temperature sensor 15 for detecting the pressure and temperature of the tank gas. Further, a manual shutoff valve 17 for manually shutting off gas is provided downstream thereof.
【００１４】また、エンジンルームに延出した高圧配管
２の下流側には、一次圧力レギュレータ４の近傍に第２
電磁遮断弁１８を設けている。つまり、高圧配管２の上
流側と、下流側には、それぞれ第１、第２電磁遮断弁１
３、１８がダブルで配設されることになる。Downstream of the high pressure pipe 2 extending into the engine room, a second pressure
An electromagnetic shutoff valve 18 is provided. That is, the first and second electromagnetic shut-off valves 1 are provided on the upstream side and the downstream side of the high-pressure pipe 2, respectively.
3, 18 will be arranged in double.
【００１５】前記一次圧力レギュレータ４と二次圧力レ
ギュレータ５との間には、一次ガス検知部２１を設け、
一次圧力レギュレータ４で減圧した一次調圧ガスのガス
圧力Ｐ1を圧力センサ２０で検知するようにしている。A primary gas detector 21 is provided between the primary pressure regulator 4 and the secondary pressure regulator 5,
The gas pressure P 1 of the primary pressure-regulated gas reduced by the primary pressure regulator 4 is detected by the pressure sensor 20.
【００１６】また、一次圧力レギュレータ４は急減圧時
の断熱膨張による凍結防止を図るための水通路４ａを備
えており、この水通路４ａにエンジンを循環した冷却水
を導いて凍結防止を図るようにしている。The primary pressure regulator 4 is provided with a water passage 4a for preventing freezing due to adiabatic expansion at the time of sudden pressure reduction. The cooling water circulated through the engine is guided to the water passage 4a to prevent freezing. I have to.
【００１７】そして、前記二次圧力レギュレータ５によ
って所定圧に正確に減圧した後、このガスは、供給管２
８を通ってエンジン６のチャンバ２９内に導かれ、前記
インジェクタ７からエンジン内に噴射される。また、こ
のインジェクタ７には燃料噴射を制御するための不図示
の噴射弁を設けている。After the pressure is accurately reduced to a predetermined pressure by the secondary pressure regulator 5, the gas is supplied to the supply pipe 2.
The fuel is guided into the chamber 29 of the engine 6 through 8 and injected into the engine from the injector 7. The injector 7 is provided with an injection valve (not shown) for controlling fuel injection.
【００１８】また、前記チャンバ２９内には、チャンバ
２９内の二次調圧ガスの圧力Ｐ2を検知する圧力センサ
３０と、温度Ｔ2を検知する温度センサ３１を設けてい
る。In the chamber 29, a pressure sensor 30 for detecting the pressure P 2 of the secondary pressure gas in the chamber 29 and a temperature sensor 31 for detecting the temperature T 2 are provided.
【００１９】そして、以上のようなタンクガス検知部１
６の圧力センサ１４、温度センサ１５、及び一次ガス検
知部２１の圧力センサ２０、及びチャンバ２９内の圧力
センサ３０、温度センサ３１で検知した信号は、燃料噴
射を制御する電子制御ユニット(ECU)に送るようにして
いる。The tank gas detector 1 as described above
The signals detected by the pressure sensor 14, the temperature sensor 15, the pressure sensor 20 of the primary gas detection unit 21, the pressure sensor 30 in the chamber 29, and the temperature sensor 31 are an electronic control unit (ECU) for controlling fuel injection. To send to.
【００２０】ところで、車室内のハンドルの下方には所
定量の衝撃（Ｇ）値によって作動する衝撃センサ３３が
設けられており、この衝撃センサ３３の検知情報を前記
第１電磁遮断弁１３、及び第２電磁遮断弁１８並びに電
子制御ユニット(ECU)に送るようにしている。An impact sensor 33 is provided below the steering wheel in the passenger compartment and operates according to a predetermined amount of impact (G). The information detected by the impact sensor 33 is transmitted to the first electromagnetic shut-off valve 13 and It is sent to the second electromagnetic shut-off valve 18 and an electronic control unit (ECU).
【００２１】つまり、車体にある一定量以上の衝撃が加
わると、衝撃センサ３３の接点が離脱して電子制御ユニ
ット(ECU)への信号が遮断されるとともに、第２電磁遮
断弁１８が遮断され、同時に第１電磁遮断弁１３も遮断
される。[0021] That is, when applied a certain amount or more of an impact on the vehicle body, together with the signal contacts of the impact sensor 33 is disengaged to the electronic control unit (ECU) is cut off, the second solenoid shut-off valve 18 is cut off At the same time, the first electromagnetic shut-off valve 13 is also shut off.
【００２２】そして、電子制御ユニット(ECU)は、前記
インジェクタ７の噴出弁をクローズにする。Then, the electronic control unit (ECU) closes the ejection valve of the injector 7.
【００２３】尚、この衝撃センサ３３はイグニッション
スイッチ(IGN.SW)をオンにすることで作動待機状態にな
る。When the ignition switch (IGN.SW) is turned on, the shock sensor 33 enters an operation standby state.
【００２４】次にガス圧の異常による燃料遮断の要領に
ついて図３及至図６に基づき説明する。図３はエンジン
停止時のタンクガス圧Ｐ0のチェック要領、図４はエン
ジン運転時のタンクガス圧Ｐ0のチェック要領、図５は
一次調圧ガスのガス圧Ｐ1のチェック要領、図６は二次
調圧のガス圧Ｐ2のチェック要領を示すフロー図であ
る。Next, the procedure for shutting off fuel due to an abnormal gas pressure will be described with reference to FIGS. 3 checks the manner of the tank gas pressure P 0 at the time of engine stop, 4 check procedure of the tank gas pressure P 0 at the time of engine operation, Figure 5 is a primary pressure control gas in the gas pressure P 1 of the check procedure, FIG. 6 is a flow diagram illustrating the checking procedure of the gas pressure P 2 of the secondary pressure regulating.
【００２５】まず、図３に基づきエンジン停止時のタン
クガス圧Ｐ0のチェック要領について説明する。First, the procedure for checking the tank gas pressure P 0 when the engine is stopped will be described with reference to FIG.
【００２６】図３のフローは、エンジンが作動していな
い時のフローであり、エンジンが作動している時は次の
図４のフローに従って処理される。The flow of FIG. 3 is a flow when the engine is not operating, and when the engine is operating, the processing is performed according to the following flow of FIG.
【００２７】このフローでは、まず圧力センサ１４がＰ
0をチェックし、このＰ0値をＰ0BSとして読み込む。In this flow, first, the pressure sensor 14
Check 0 and read this P 0 value as P 0BS .
【００２８】次いで所定時間が経過した後、再び圧力セ
ンサ１４でＰ0を読み込み、このＰ0値をＰ0ASとして読
み込む。Next, after a lapse of a predetermined time, P 0 is read by the pressure sensor 14 again, and this P 0 value is read as P 0AS .
【００２９】そして、Ｐ0BS−Ｐ0ASが、予め設定した所
定の圧力偏差Ｐ0LSSを超えているか否かをチェックし、
超えている場合は異常と判断し、前記第１電磁遮断弁１
３、第２電磁遮断弁１８、インジェクタ７の噴出弁を遮
断する。そして、かかるチェックサイクルが繰り返され
る。Then, it is checked whether or not P 0BS −P 0AS exceeds a predetermined pressure deviation P 0LSS set in advance.
If it exceeds, it is determined that there is an abnormality, and the first electromagnetic shut-off valve 1
3. The second electromagnetic shutoff valve 18 and the ejection valve of the injector 7 are shut off. Then, such a check cycle is repeated.
【００３０】次に、図４に示すエンジン運転時のタンク
ガス圧Ｐ0のチェック要領も同様なフローであり、一定
時間経過後のＰ0値の変化Ｐ0BR−Ｐ0ARが所定のＰ0LSを
超える場合は異常と判断して第１電磁遮断弁１３、第２
電磁遮断弁１８、インジェクタ７の噴出弁を遮断する。Next, the procedure for checking the tank gas pressure P 0 during the operation of the engine shown in FIG. 4 is a similar flow, and the change P 0BR -P 0AR of the P 0 value after the lapse of a predetermined time is equal to the predetermined P 0LS . If it exceeds, it is determined to be abnormal and the first solenoid shut-off valve 13 and the second
The electromagnetic shutoff valve 18 and the ejection valve of the injector 7 are shut off.
【００３１】この際、Ｐ0LSはその時のガス圧Ｐ0値によ
って変化させる必要があるため、当初測定したガス圧Ｐ
0に基づいてマップを検索して設定するようにしてお
り、具体的にはその時のパワー全開時の圧力低下分を基
準にして定めている。At this time, since P 0LS needs to be changed according to the gas pressure P 0 value at that time, the gas pressure P
The map is searched and set based on 0 , and specifically, the map is determined based on the pressure drop when the power is fully opened at that time.
【００３２】次に図５に基づき一次調圧したガス圧Ｐ1
のチェック要領について説明する。[0032] Then the gas pressure P 1 that was pressurized primary tone based on FIG. 5
Will be described.
【００３３】まず、一次調圧したガス圧Ｐ1の上限値
（Ｐ1FSLH）と下限値（Ｐ1FSLL）については、その時の
タンクガス圧Ｐ0に基づいてテーブルを検索して設定す
る。First, the upper limit value (P 1FSLH ) and the lower limit value (P 1FSLL ) of the primary regulated gas pressure P 1 are set by searching a table based on the tank gas pressure P 0 at that time.
【００３４】そして圧力センサ２０によって、一次調圧
したガス圧Ｐ1を読み込むと、このガス圧Ｐ1が上限値
（Ｐ1FSLH）を超えているか否かが判定され、所定時間
経過後に測定したガス圧Ｐ1が再度上限値（Ｐ1FSLH）を
超える場合は異常と判断する。When the pressure sensor 20 reads the primary regulated gas pressure P 1 , it is determined whether the gas pressure P 1 exceeds an upper limit value (P 1FSLH ). exceeding pressure P 1 is again upper limit (P 1FSLH) is determined to be abnormal.
【００３５】ガス圧Ｐ1が上限値（Ｐ1FSLH）を超えてい
ない時は、下限値（Ｐ1FSLL）を満足するか否かが判定
される。これも同様の手順によって一定時間経過後に繰
り返されるか否かが判定され、繰り返される場合は異常
と判断する。If the gas pressure P 1 does not exceed the upper limit (P 1FSLH ), it is determined whether or not the lower limit (P 1FSLL ) is satisfied. It is determined whether or not this is repeated after a lapse of a predetermined time by the same procedure, and if it is repeated, it is determined to be abnormal.
【００３６】そして、同様に異常と判断されれば、第１
電磁遮断弁１３、第２電磁遮断弁１８、インジェクタ７
の噴出弁を遮断する。If it is determined that there is an abnormality, the first
Electromagnetic shutoff valve 13, second electromagnetic shutoff valve 18, injector 7
Shut off the spout valve.
【００３７】次に図６に基づき二次調圧後のガス圧Ｐ2
のチェック要領について説明する。Next, based on FIG. 6, the gas pressure P 2 after the secondary pressure regulation is obtained.
Will be described.
【００３８】圧力センサ３０によって検出したガス圧Ｐ
2のチェック要領も基本的には前記例と同様であり、こ
の場合の上限値（Ｐ2FSLH）と下限値（Ｐ2FSLL）はタン
クガス圧Ｐ0又は一次調圧後のガス圧Ｐ1に基づいて設定
される。The gas pressure P detected by the pressure sensor 30
The basically second check procedure is the same as the example, based on the upper limit value (P 2FSLH) and the lower limit value (P 2FSLL) tank gas pressure P 0 or the gas pressure P 1 of the primary regulating pressure in this case Is set.
【００３９】そして、上下限値を一定時間経過後も繰り
返して超えるようであれば異常と判断し第１電磁遮断弁
１３、第２電磁遮断弁１８、インジェクタ７の噴出弁を
遮断する。If the upper and lower limit values are repeatedly exceeded even after the lapse of a predetermined time, it is determined that there is an abnormality, and the first electromagnetic shut-off valve 13, the second electromagnetic shut-off valve 18, and the injection valve of the injector 7 are shut off.
【００４０】更に本発明では、タンク１の残燃料が一定
量以下になった場合にも、インジェクタ７からの燃料噴
射弁を遮断するようにしている。 Further, according to the present invention , the fuel injection valve from the injector 7 is shut off even when the remaining fuel in the tank 1 becomes less than a certain amount .
【００４１】以上のように構成した燃料供給装置におい
て、例えば車両走行中に車体に異常な衝撃が加わったよ
うな時、衝撃センサ３３によって高圧配管２の上・下流
の電磁遮断弁１３、１８とインジェクタ７の噴出弁が直
ちに遮断されるので、不測の事態が生じてもガスを遮断
することが出来、且つ確実にエンジンを停止させること
が出来る。In the fuel supply device configured as described above, for example, when an abnormal impact is applied to the vehicle body while the vehicle is running, the impact sensors 33 connect the electromagnetic shut-off valves 13 and 18 on the upper and downstream sides of the high-pressure pipe 2 to each other. Since the injection valve of the injector 7 is immediately shut off, the gas can be shut off even if an unexpected situation occurs, and the engine can be reliably stopped.
【００４２】また、ガス圧が所定の範囲外であれば、ガ
ス洩れ或いはレギュレータ不良と判断し、ガスを遮断し
て確実にエンジンを停止させることが出来る。If the gas pressure is out of the predetermined range, it is determined that the gas is leaking or the regulator is defective, and the gas can be shut off to reliably stop the engine.
【００４３】[0043]
【発明の効果】以上のように本発明は、車体に加わる一
定の衝撃値を衝撃センサで検知し、この検知信号によっ
て燃料供給配管の遮断弁と、燃料噴射部の噴出弁を遮断
するようにしたため、不測事態が生じても確実にガスを
遮断することが出来、しかも即時にエンジンを停止させ
ることが出来る。 The present invention as described above, according to the present invention is a constant impact value applied on the body is detected by the impact sensor, cut-off and shut-off valve in the fuel supply piping, the ejection valve of the fuel injector by the detection signal <br /> because the way, even if contingency reliably can block the gas, moreover Ru can stop the engine immediately.
【図１】燃料供給系統の模式図FIG. 1 is a schematic diagram of a fuel supply system.
【図２】燃料供給系統の車体配置の概要図FIG. 2 is a schematic view of a vehicle arrangement of a fuel supply system.
【図３】エンジン停止時のタンクガス圧のチェック要領
のフロー図FIG. 3 is a flowchart showing a procedure for checking tank gas pressure when the engine is stopped.
【図４】エンジン作動時のタンクガス圧のチェック要領
のフロー図FIG. 4 is a flow chart of a procedure for checking tank gas pressure when the engine is operating.
【図５】一次調圧後のガス圧のチェック要領のフロー図FIG. 5 is a flowchart of a procedure for checking gas pressure after primary pressure adjustment.
【図６】二次調圧後のガス圧のチェック要領のフロー図FIG. 6 is a flowchart of a procedure for checking gas pressure after secondary pressure regulation.
１ タンク ２ 高圧配管 ６ エンジン ７ インジェクタ １３ 第１電磁遮断弁 １８ 第２電磁遮断弁 ３３ 衝撃センサ DESCRIPTION OF SYMBOLS 1 Tank 2 High pressure pipe 6 Engine 7 Injector 13 1st electromagnetic shutoff valve 18 2nd electromagnetic shutoff valve 33 Impact sensor
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ０２Ｍ 21/02 Ｆ０２Ｍ 21/02 Ｖ ３０１ ３０１Ａ (72)発明者 池尾 充 埼玉県和光市中央１丁目４番１号 株式 会社 本田技術研究所内 (72)発明者 石橋 建一郎 埼玉県和光市中央１丁目４番１号 株式 会社 本田技術研究所内 (56)参考文献 特開 平５−248269（ＪＰ，Ａ) 特開 昭63−55352（ＪＰ，Ａ) 特開 昭58−195039（ＪＰ，Ａ) 実開 昭59−11134（ＪＰ，Ｕ) 実開 昭62−31740（ＪＰ，Ｕ) 実開 昭62−57764（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F02D 41/22 330 F02B 43/00 F02D 17/04 F02D 19/02 F02D 41/32 F02M 21/02 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI F02M 21/02 F02M 21/02 V 301 301A (72) Inventor Mitsuru Ikeo 1-4-1 Chuo, Wako-shi, Saitama Honda Co., Ltd. Inside the Technical Research Institute (72) Inventor Kenichiro Ishibashi 1-4-1 Chuo, Wako-shi, Saitama Prefecture Honda Technical Research Institute Co., Ltd. (56) References JP-A-5-248269 (JP, A) JP-A-63-55352 ( JP, A) JP-A-58-195039 (JP, A) JP-A-59-11134 (JP, U) JP-A-62-31740 (JP, U) JP-A-62-57764 (JP, U) (58 ) Field surveyed (Int.Cl. 7 , DB name) F02D 41/22 330 F02B 43/00 F02D 17/04 F02D 19/02 F02D 41/32 F02M 21/02
Claims (1)
料をエンジンの燃料噴射部から噴射するようにしたガス
燃料エンジンの燃料遮断装置において、前記配管に遮断
弁を設け、車体に一定量以上の衝撃が加わると、車体の
衝撃を検出する衝撃センサの接点が離脱し、この離脱に
より前記燃料噴射部の噴射弁を遮断するとともに前記配
管の遮断弁を遮断するようにしたことを特徴とするガス
燃料エンジンの燃料遮断装置。1. A fuel cutoff apparatus for a gas fuel engine in which the gaseous fuel to be injected from the fuel injection portion of the engine sent through the pipe from the tank, the shut-off valve provided in the piping, a certain amount or more of an impact to the vehicle body When you join,
The contact of the impact sensor that detects the impact comes off, and this
The injection valve of the fuel injection section is shut off by the
A fuel shut-off device for a gas fuel engine, wherein a shut-off valve of a pipe is shut off.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35188993A JP3181784B2 (en) | 1993-12-28 | 1993-12-28 | Gas fuel engine fuel cutoff device |
| DE69432323T DE69432323T2 (en) | 1993-12-28 | 1994-12-28 | Gas supply mechanism and device for determining and displaying the amount of gas for a gas engine |
| DE69423594T DE69423594T2 (en) | 1993-12-28 | 1994-12-28 | Gas supply mechanism for gas internal combustion engine |
| US08/365,442 US5611316A (en) | 1993-12-28 | 1994-12-28 | Gas fuel supply mechanism for gas combustion engine |
| EP94120842A EP0661428B1 (en) | 1993-12-28 | 1994-12-28 | Gas fuel supply mechanism for gas combustion engine |
| EP99112594A EP0942161B1 (en) | 1993-12-28 | 1994-12-28 | Gas fuel supply mechanism and amount of gas fuel determining and indicating means for gas combustion engine |
| AU81841/94A AU695675B2 (en) | 1993-12-28 | 1994-12-29 | Gas fuel supply mechanism for gas combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35188993A JP3181784B2 (en) | 1993-12-28 | 1993-12-28 | Gas fuel engine fuel cutoff device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07189789A JPH07189789A (en) | 1995-07-28 |
| JP3181784B2 true JP3181784B2 (en) | 2001-07-03 |
Family
ID=18420311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35188993A Expired - Fee Related JP3181784B2 (en) | 1993-12-28 | 1993-12-28 | Gas fuel engine fuel cutoff device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3181784B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3432458B2 (en) | 1999-07-30 | 2003-08-04 | 富士通テン株式会社 | Gas leak detection and fail-safe control method and apparatus for gas fueled internal combustion engine |
| JP3959705B2 (en) * | 2001-01-30 | 2007-08-15 | スズキ株式会社 | Gas fuel supply structure |
| JP4539036B2 (en) * | 2003-06-06 | 2010-09-08 | 日産自動車株式会社 | Fuel injection valve protection device for LPG injection type engine |
| JP2005069454A (en) | 2003-08-28 | 2005-03-17 | Toyota Motor Corp | Gas supply device |
| JP5427158B2 (en) * | 2010-10-19 | 2014-02-26 | 川崎重工業株式会社 | Fuel gas supply and filling system |
| JP6066563B2 (en) * | 2012-01-27 | 2017-01-25 | 東芝キヤリア株式会社 | Water heater |
-
1993
- 1993-12-28 JP JP35188993A patent/JP3181784B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07189789A (en) | 1995-07-28 |
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