JPS6131302B2 - - Google Patents
Info
- Publication number
- JPS6131302B2 JPS6131302B2 JP56159408A JP15940881A JPS6131302B2 JP S6131302 B2 JPS6131302 B2 JP S6131302B2 JP 56159408 A JP56159408 A JP 56159408A JP 15940881 A JP15940881 A JP 15940881A JP S6131302 B2 JPS6131302 B2 JP S6131302B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- filter
- heater unit
- engine
- heater
- 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
Classifications
-
- 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
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/30—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by heating means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は燃料配管系中に配設される燃料フイル
タ内の燃料を加熱するようにしたエンジンの燃料
加熱装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel heating device for an engine that heats fuel in a fuel filter disposed in a fuel piping system.
一般に、デイーゼルエンジンの燃料としては軽
油、重油等の比較的粘度の高い燃料が使用されて
いる。ところで、これらの燃料では燃料特性を評
価するセタン価のみならず燃料の流動性を評価す
る流動点、曇り点等がJISにて規定されている。
よつて、デイーゼル燃料はその使用環境（特に外
気温度）の違いによつて燃料を区別し使用してい
る。例えば、外気が−５℃までは２号軽油、−30
℃までは特３号軽油等を使用し、エンジンの作動
を正常に行なうようにしている。 Generally, fuels with relatively high viscosity such as light oil and heavy oil are used as fuel for diesel engines. By the way, for these fuels, not only the cetane number, which evaluates the fuel properties, but also the pour point, cloud point, etc., which evaluate the fluidity of the fuel, are specified by JIS.
Therefore, diesel fuel is differentiated and used depending on the environment in which it is used (particularly the outside temperature). For example, if the outside temperature is -5℃, use No. 2 diesel oil, -30
To ensure normal engine operation, special No. 3 diesel oil is used up to ℃.
しかしながら、近年にあつては長距離走行に伴
う燃料の混合使用および分配型噴射ポンプの使用
による燃料配管系の低抵抗使用等によつて該配管
系の抵抗が高くなつてしまう。そのため、デイー
ゼルエンジンの不調、特にエンジン始動不調が多
発する傾向にある。このエンジン不調の最大の原
因は、デイーゼル燃料の低温使用によつて燃料中
のパラフインが析出し燃料フイルタを目詰りする
事であるとの事実が明確となつた。 However, in recent years, the resistance of the piping system has increased due to the use of mixed fuels and the use of distribution type injection pumps to reduce the resistance of the fuel piping system as a result of long-distance travel. As a result, diesel engine malfunctions, particularly engine starting malfunctions, tend to occur frequently. It has become clear that the main cause of this engine malfunction is that paraffin in the diesel fuel precipitates due to the use of diesel fuel at low temperatures, clogging the fuel filter.
そこで、この目詰りの対策としては、析出パラ
フインを溶解することが考えられるが、このパラ
フインの溶解は燃料自体を加熱する事が最も有効
であり、一度目詰りしたパラフインも加熱で流出
しエンジン不調を解消する。 Therefore, as a countermeasure against this clogging, it is possible to dissolve the precipitated paraffin, but the most effective way to dissolve this paraffin is to heat the fuel itself, and once the paraffin has clogged, it will flow out due to heating and cause engine problems. Eliminate.
本発明はかかる従来の実状に鑑み、燃料フイル
タ本体とヘツドカバーとの間に燃料を加熱するた
めの構造簡単なヒータユニツトを挟着、固定し、
取入口から流入された燃料をヒータユニツトによ
り直接加熱し、加熱した燃料をフイルタエレメン
トに流入させることによつて燃料中のパラフイン
の析出防止および前記燃料フイルタに析出したパ
ラフインを溶解して、エンジンの正常な作動を促
すようにするとともに、組立作業が容易に行な
え、かつ、製品品質も高く、さらに、従来の物に
くらべさほどコストアツプもすることのない燃料
加熱装置を提供するものである。 In view of the conventional situation, the present invention has been proposed by sandwiching and fixing a simple-structured heater unit for heating fuel between the fuel filter body and the head cover.
The fuel flowing in from the intake port is directly heated by the heater unit, and the heated fuel is allowed to flow into the filter element, thereby preventing the precipitation of paraffin in the fuel and melting the paraffin deposited on the fuel filter, thereby improving the engine performance. To provide a fuel heating device that promotes normal operation, is easy to assemble, has high product quality, and does not increase cost much compared to conventional ones.
以下、本発明の実施例を図に基づいて詳述す
る。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第１図はデイーゼルエンジンの燃料配管系１の
概略図を示し、燃料タンク２内のデイーゼル燃料
は燃料供給ポンプ３から燃料フイルタ４を介して
噴射ポンプ５に送られ、噴射ポンプ５から燃料噴
射ノズル６へと圧送されるようになつている。 FIG. 1 shows a schematic diagram of a fuel piping system 1 of a diesel engine. Diesel fuel in a fuel tank 2 is sent from a fuel supply pump 3 to an injection pump 5 via a fuel filter 4, and from the injection pump 5 to a fuel injection nozzle. 6.
前記燃料フイルタ４は第２図および第３図に詳
細に示すように、フイルタ本体１０とこのフイル
タ本体１０の上端部にネジ部Ａを介して装着され
るヘツドカバー１１とで構成されている。前記フ
イルタ本体１０は内筒１２および外筒１３で二重
構造に構成され、これら内、外筒１２，１３間に
は濾紙、濾布等で形成されるフイルタエレメント
１４が配設される。一方、前記ヘツドカバー１１
には燃料の取入口１５と取出口１６が形成され、
取入口１５は前記燃料供給ポンプ３にパイプ７を
介して接続され、取出口１６は前記噴射ポンプ５
にパイプ８を介して接続されるようになつてい
る。そして、前記取入口１５から導入された燃料
は、通路１７，１８を通つてフイルタエレメント
１４に達し、このフイルタエレメント１４で濾過
された後内筒１２から通路１９，２０を通つて取
出口１６から排出されるようになつている。 As shown in detail in FIGS. 2 and 3, the fuel filter 4 is comprised of a filter body 10 and a head cover 11 attached to the upper end of the filter body 10 via a threaded portion A. The filter body 10 has a double structure with an inner cylinder 12 and an outer cylinder 13, and a filter element 14 made of filter paper, filter cloth, etc. is disposed between the inner cylinder 12 and the outer cylinder 13. On the other hand, the head cover 11
A fuel intake port 15 and a fuel outlet port 16 are formed in the fuel tank.
The intake port 15 is connected to the fuel supply pump 3 via a pipe 7, and the intake port 16 is connected to the injection pump 5.
It is designed to be connected to via a pipe 8. The fuel introduced from the intake port 15 passes through the passages 17 and 18 and reaches the filter element 14, and after being filtered by the filter element 14, the fuel passes from the inner cylinder 12 through the passages 19 and 20 and exits from the intake port 16. It is beginning to be excreted.
ここで、本発明は前記フイルタ本体１０と前記
ヘツドカバー１１との間に、前記燃料フイルタ４
内の燃料を加熱するためのヒータユニツト３０を
前記ねじ部Ａを介して挟着，固定してある。すな
わちヒータユニツト３０は、前記フイルタ本体１
０の上端部外周形状に略沿つて形成された伝熱板
３１と、この伝熱板３１の周縁内部に埋設された
ヒータ本体３２と、前記伝熱板３１の一側部に埋
設された温度センサ３３とで構成されている。前
記ヒータ本体３２はニクロム線等の電気発熱体で
形成され、該ヒータ本体３２が発熱することによ
つて前記伝熱板３１が全体的に加熱されるように
なつている。前記温度センサ３３は前記伝熱板３
１の温度を検出し、周外の制御機構によつて前記
ヒータ本体３２への通電を断続し、伝熱板３１の
過加熱を防止するようになつている。３１ａは通
路１７と通路１８とを連通し、燃料が通過するた
めの透孔である。 Here, in the present invention, the fuel filter 4 is disposed between the filter main body 10 and the head cover 11.
A heater unit 30 for heating the fuel inside is clamped and fixed via the threaded portion A. That is, the heater unit 30 is connected to the filter body 1.
A heat exchanger plate 31 formed approximately along the outer circumferential shape of the upper end of the heat exchanger plate 31 , a heater main body 32 embedded inside the periphery of the heat exchanger plate 31 , and a temperature control plate 32 embedded in one side of the heat exchanger plate 31 . It is composed of a sensor 33. The heater body 32 is formed of an electric heating element such as a nichrome wire, and the heat transfer plate 31 is heated as a whole by the heater body 32 generating heat. The temperature sensor 33 is connected to the heat transfer plate 3
The temperature of the heater body 32 is detected and the power supply to the heater body 32 is interrupted by an external control mechanism to prevent the heat exchanger plate 31 from being overheated. 31a is a through hole that communicates the passage 17 and the passage 18 and allows fuel to pass therethrough.
以上の構成により、ヒータ本体３２に通電する
と該ヒータ本体３２が発熱し、伝熱板３１が加熱
される。すると、燃料は前記伝熱板３１の透孔３
１ａを通過するとき、または伝熱板３１の表面か
ら熱伝達されて加熱され、低温時燃料中で析出し
たパラフインを溶解するとともに、フイルタエレ
メント１４に付着した析出パラフインをも溶解す
る。従つて、前記フイルタエレメント１４を通過
する燃料が増大し、つまり、燃料配管系１中を通
過する燃料を正常化してデイーゼルエンジンの作
動を正常に行なう。尚、本実施例にあつてはヒー
タユニツト３０での発熱量は、温度センサ３３の
検出値に基づいて制御されるので、燃料が過加熱
されることはない。 With the above configuration, when the heater main body 32 is energized, the heater main body 32 generates heat, and the heat exchanger plate 31 is heated. Then, the fuel flows through the through holes 3 of the heat exchanger plate 31.
1a, or is heated by heat transfer from the surface of the heat exchanger plate 31, melting the paraffin precipitated in the fuel at low temperature, and also melting the precipitated paraffin adhering to the filter element 14. Therefore, the amount of fuel passing through the filter element 14 increases, that is, the amount of fuel passing through the fuel piping system 1 is normalized and the diesel engine is operated normally. In this embodiment, the amount of heat generated by the heater unit 30 is controlled based on the detected value of the temperature sensor 33, so that the fuel will not be overheated.
ところで、前述したヒータユニツト３０のヒー
タ本体３２として電気発熱体を用いたものを示し
たが、これに限ることなく他の手段によつて発熱
できるものでもよいことはいうまでもない。 Incidentally, although an electric heating element is used as the heater body 32 of the heater unit 30 described above, the present invention is not limited to this, and it goes without saying that other means capable of generating heat may be used.
以上説明したように本発明のエンジンの燃料加
熱装置は、燃料フイルタのフイルタ本体とヘツド
カバーとの間に、前記燃料フイルタ内の燃料を加
熱するためのヒータユニツトを挟着、固定し、取
入口から流入された燃料をヒータユニツトにより
直接加熱し加熱した燃料をフイルタエレメントに
流入することとしたので、ヒータユニツトの熱を
効率よく燃料の加熱に用いることができるととも
に、フイルタエレメント流入前の燃料を直接加熱
することとしたので、エンジン始動時においても
加熱された燃料がフイルタエレメントに流入する
ことができるので、低温時燃料中で析出したパラ
フインを溶解すると共に、フイルタエレメントに
付着した析出パラフインをも溶解し、前記燃料配
管系の燃料通過を正常にしてエンジンの作動正常
化を行なうことができる。 As explained above, in the engine fuel heating device of the present invention, a heater unit for heating the fuel in the fuel filter is sandwiched and fixed between the filter main body of the fuel filter and the head cover, and the heater unit is inserted between the fuel filter and the head cover. Since the inflowing fuel is directly heated by the heater unit and the heated fuel flows into the filter element, the heat of the heater unit can be efficiently used to heat the fuel, and the fuel before flowing into the filter element can be directly heated. By heating the fuel, the heated fuel can flow into the filter element even when the engine is started, which not only dissolves the paraffin precipitated in the fuel at low temperatures, but also dissolves the paraffin precipitated on the filter element. However, the fuel passage through the fuel piping system can be made normal, and the operation of the engine can be normalized.
さらに、本願発明では、ヒータユニツトを極め
て簡単な構造としているため、その製造が容易か
つ安価にできる。また、完全に一体化しているた
めたとえヒータユニツトを雑に取扱つたとしても
壊れる恐れも低いので燃料フイルタ内への組立作
業を容易に行なえる。さらに、部品点数が少ない
ため接続箇所が少なくなるとともに、ヒータ本体
が伝熱板内に完全に埋設され、外部に露出してい
ないため使用中に接触不良等の故障を生じるおそ
れも極めて少ない等の種々の作用効果を奏する。 Furthermore, in the present invention, since the heater unit has an extremely simple structure, it can be manufactured easily and at low cost. Furthermore, since it is completely integrated, there is little risk of it breaking even if the heater unit is handled roughly, so it can be easily assembled into the fuel filter. Furthermore, since there are fewer parts, there are fewer connection points, and since the heater body is completely buried within the heat transfer plate and is not exposed to the outside, there is extremely little risk of malfunctions such as poor contact during use. It has various effects.
第１図はデイーゼルエンジンの燃料配管系の概
率構成図、第２図は本発明の燃料加熱装置にかか
る燃料フイルタの外観図、第３図は第２図に示し
た燃料フイルタの縦断面図である。
１…燃料配管系、４…燃料フイルタ、１０…フ
イルタ本体、１１…ヘツドカバー、１２…内筒、
１３…外筒、１４…フイルタエレメント、１５…
燃料取入口、１６…燃料取出口、３０…ヒータユ
ニツト、３１…伝熱板、３２…ヒータ本体、３３
…温度センサ。
Fig. 1 is a schematic diagram of the fuel piping system of a diesel engine, Fig. 2 is an external view of the fuel filter of the fuel heating device of the present invention, and Fig. 3 is a longitudinal sectional view of the fuel filter shown in Fig. 2. be. DESCRIPTION OF SYMBOLS 1... Fuel piping system, 4... Fuel filter, 10... Filter body, 11... Head cover, 12... Inner cylinder,
13... Outer cylinder, 14... Filter element, 15...
Fuel intake port, 16...Fuel outlet, 30...Heater unit, 31...Heat exchange plate, 32...Heater main body, 33
...Temperature sensor.
Claims (1)
体と、このフイルタ本体に装着され燃料の取入口
および取出口が形成されたヘツドカバーとを備え
た燃料フイルタが配設されるエンジンの燃料配管
系を有し、前記フイルタ本体と前記ヘツドカバー
との間に、前記燃料フイルタ内の燃料を加熱する
ためのヒータユニツトを少なくとも前記取入口と
前記フイルタエレメント間に位置するように挟
着，固定し、前記取入口から流入された燃料を前
記ヒータユニツトにより直接加熱し、加熱した燃
料が前記フイルタエレメントに流入するようにし
てなるとともに、前記ヒータユニツトは伝熱板と
該伝熱板の内部に埋設されたヒータ本体とからな
ることを特徴とするエンジンの燃料加熱装置。1. A fuel piping system for an engine in which a fuel filter is installed, which includes a filter body with a built-in filter element and a head cover attached to the filter body and formed with a fuel inlet and an outlet; A heater unit for heating the fuel in the fuel filter is sandwiched and fixed between the filter body and the head cover so as to be located at least between the intake port and the filter element, and the heater unit for heating the fuel in the fuel filter is sandwiched and fixed between the filter body and the head cover. The heated fuel is directly heated by the heater unit, and the heated fuel flows into the filter element, and the heater unit includes a heat exchanger plate and a heater body embedded inside the heat exchanger plate. An engine fuel heating device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56159408A JPS5862351A (en) | 1981-10-08 | 1981-10-08 | engine fuel heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56159408A JPS5862351A (en) | 1981-10-08 | 1981-10-08 | engine fuel heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5862351A JPS5862351A (en) | 1983-04-13 |
| JPS6131302B2 true JPS6131302B2 (en) | 1986-07-19 |
Family
ID=15693106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56159408A Granted JPS5862351A (en) | 1981-10-08 | 1981-10-08 | engine fuel heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5862351A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5941667U (en) * | 1982-09-09 | 1984-03-17 | マツダ株式会社 | Engine fuel filter device |
| JPS60108759U (en) * | 1983-12-27 | 1985-07-24 | 株式会社 土屋製作所 | fuel filter |
| KR100534868B1 (en) * | 2002-10-01 | 2005-12-08 | 현대자동차주식회사 | fuel filter using vehicle |
| CN112627934B (en) * | 2020-12-31 | 2025-03-14 | 上海英特汽车配件有限公司 | A filter element with heating function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387691A (en) * | 1980-11-07 | 1983-06-14 | Texas Instruments Incorporated | Diesel fuel filter system |
-
1981
- 1981-10-08 JP JP56159408A patent/JPS5862351A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5862351A (en) | 1983-04-13 |
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