JPH0338316B2 - - Google Patents
Info
- Publication number
- JPH0338316B2 JPH0338316B2 JP28731386A JP28731386A JPH0338316B2 JP H0338316 B2 JPH0338316 B2 JP H0338316B2 JP 28731386 A JP28731386 A JP 28731386A JP 28731386 A JP28731386 A JP 28731386A JP H0338316 B2 JPH0338316 B2 JP H0338316B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- cetane number
- standard
- tetralin
- cetane
- 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
- 239000000446 fuel Substances 0.000 claims description 66
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 claims description 57
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 48
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 10
- 150000002978 peroxides Chemical class 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 239000003463 adsorbent Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 7
- 239000002283 diesel fuel Substances 0.000 description 6
- YCOZIPAWZNQLMR-UHFFFAOYSA-N heptane - octane Natural products CCCCCCCCCCCCCCC YCOZIPAWZNQLMR-UHFFFAOYSA-N 0.000 description 6
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000013065 commercial product Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- VCLJODPNBNEBKW-UHFFFAOYSA-N 2,2,4,4,6,8,8-heptamethylnonane Chemical compound CC(C)(C)CC(C)CC(C)(C)CC(C)(C)C VCLJODPNBNEBKW-UHFFFAOYSA-N 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
産業上の利用分野
本発明は、デイーゼルエンジン用燃料の自己着
火性を表わすセタン価を簡便に測定に利用される
標準燃料及び該標準燃料を用いて上記のセタン価
の測定方法に関する。
従来技術
デイーゼルエンジン用燃料の自己着火性を表わ
すセタン価の測定は、ASTM Ｄ 613−84に規
定される「Test Method for Ignition Quality
of Diesel Fuel by the Cetane Method」に基
づいてASTM−CFRエンジンを用い、規定され
た運転条件により行われている。
この測定法では、セタン価を100と定義したノ
ルマル（ｎ）−セタン（炭素数16のノルマルパラ
フイン）と、セタン価を15と定義したヘプタメチ
ルノナン（HMNと略される）を標準燃料として
用い、この両者を種々の割合に混合して所定のセ
タン価に調製したものと、試料燃料との着火性を
CFRエンジンを用いて比較し、試料燃料と同一
の着火性を示す標準燃料のセタン価で、当該燃料
のセタン価を表わすものである。
しかし、デイーゼル燃料のセタン価の測定に
は、規格上上記ｎ−セタンとHMNとの標準燃料
を用いなければならないものの、実用上の測定に
は安価に入手し易く、かつ取扱いも簡単な標準燃
料の提供が望まれる。
すなわち、ｎ−セタンは凝固点15〜17℃である
ため冬季に氷結し取扱いにくく、加うるに高価で
あり、一方、HMNも高価である。
さらに、これらを混合して標準燃料としてセタ
ン価の測定に用いるに当つて、該燃料をエンジン
で燃焼させる際、発火遅れメーター（Ignition
delay meter）が安定化するまでの時間に長く要
するので、上記測定に要する時間も約60分程度に
なるという問題もある。
発明が解決しようとする課題
本発明は、上述したごとき状況に鑑みなされた
ものであつて、比較的安価に入手し得、取扱いも
容易であり、かつセタン価の測定に要する時間も
一層短縮し得る、セタン価測定に用いるための標
準燃料を提供すること、及び該燃料を用いてデイ
ーゼルエンジン用燃料、主として軽油及びＡ重油
のセタン価を測定する方法を提供することを課題
とする。
以下本発明を詳しく説明する。
発明の構成
本発明の特徴は、ノルマルテトラデカンとテト
ラリンを組合せて混合した燃料を、デイーゼルエ
ンジン用燃料のセタン価測定のための標準燃料と
して利用することにある。すなわち、セタン価の
高いノルマルテトラデカンとセタン価の低いテト
ラリンを種々の割合に混合して所定のセタン価に
調製したものと、試料との着火性をCFRエンジ
ンを用いて比較することにより、試料のセタン価
を簡便に測定するものである。
課題を解決するための手段
本発明において標準燃料として用いるノルマル
テトラデカンは、石油と灯油乃至軽油留分から分
離される炭素数14個のノルマルパラフインであつ
て、純度が97％以上のものであれば十分使用でき
る。因に、ノルマルテトラデカンに含まれる不純
物は、一般に炭素数12、13及び15個のノルマルパ
ラフイン類であるが、これらの含有量が1wt％以
下であれば許容される。
また、ノルマルテトラデカンの純度は、灯油乃
至軽油留分をモレキユラーシーブによる吸着と精
密蒸留に付することにより、97％以上に高めるこ
とができる。
一方、本発明で標準燃料の他の成分として用い
られるテトラリンは市販品（純度98〜99％）を利
用し得る。しかし、市販のテトラリンは長期貯蔵
中に部分酸化されてパーオキサイドを生成するこ
とがあるので留意する必要がある。テトラリン中
にパーオキサイドが生成してそのパーオキサイド
価が高くなるとセタン価測定に際してその価を変
動させるので好ましくない。したがつて、本発明
ではテトラリンの長期貯蔵中でのパーオキサイド
の生成を防止乃至はその量を低減させるために、
テトラリンを白土などを用いて吸着処理を行う。
すなわち、テトラリンに白土を2wt％添加し、
撹拌接触させた後濾過することにより、パーオキ
サイド数を５以下から１以下にまて低減すること
ができる。このように処理したテトラリンを冷暗
所に保存すると２〜３ケ月間パーオキサイド価の
上昇はみられない。また、本発明で用いるテトラ
リンは、取扱いも容易であり、特に、上記の吸着
処理を行つたものは安定性が良好である。
次に、本発明に係る標準燃料を用いてデイーゼ
ルエンジン用燃料のセタン価を測定するには、ｎ
−テトラデカン（高セタン価標準燃料で、セタン
価は95）とテトラリン（低セタン価標準燃料で、
セタン価は５）を種々の割合に混合して所定のセ
タン価に調製したものと、試料としてのデイーゼ
ル用燃料との着火性をASTM Ｄ 613−84の規
定に基いて比較し、試料のセタン価を下記手順に
従つて求める。
セタン価の測定手順：
ASTM−CFRエンジンをウオームアツプし
た後、試料の燃料を用いて運転を行つて、燃料
噴射時期を上死点前13度に設定し、次にエンジ
ンの圧縮比を変えて着火時期をエンジンのクラ
ンク角度の上死点になるように調整する。この
時に圧縮比調整用ハンドホイール目盛を記録す
る。
上記エンジンを次の燃料でフラツシングして
燃料ラインの洗浄を行つた後、セタン価が異な
るように調製した２種類の標準燃料（セタン価
の比較的低いものと高いものとの２種類）の一
方を用いて運転を行い、上記手順と同様に噴
射時期を上死点前13度、着火時期を上死点にな
るように調整する。エンジンの安定化及びイグ
ニシヨンデイレイメーターが安定するまで調整
を続け、安定したら圧縮比調整用ハンドホイー
ル目盛を記録する。
エンジンを再び他方の標準燃料でフラツシン
グして燃料ラインの洗浄を行つた後、他方の標
準燃料を用いて運転を行い上記手順と同様の
操作を行う。
次いで、エンジンを更にフラツシングして燃
料ラインの洗浄を行つた後、試料の燃料を用い
て再び運転を行い、以下上記の手順の運転を繰
返し行う。すなわち、試料と２種の標準燃料を
用いるエンジンの運転を２回づつ繰返し行うこ
とになる。
上記測定により得らた圧縮比調整用ハンドホイ
ール目盛から試料のセタン価を求める。なお、上
記２種類の標準燃料のセタン価の差は最大で５と
する。
上記測定手順において、従来のｎ−セタン／
HMNの組合せからなる標準燃料では、エンジン
の切換え（フラツシング）を行つた後、上記メー
ターの安定化には約数分〜10分を要し、一個の試
料のセタン価測定には全体で約50〜60分を要す
る。これに対し、本発明に係るノルマルテトラデ
カン／テトラリンの組合せからなる標準燃料では
約35〜40分の時間で測定し得る。
実施例及び発明の効果
以下実施例により、本発明及びその効果を具体
的に説明する。
実施例 １
測定試料の燃料組成：
試料Ａ…FC−LCO／DS−GO（45／55vol％）
試料Ｂ…試料Ａにセタン価向上剤を添加。
（注）FC−LCO…接触分解軽油（ライトサイク
ルオイル）
DS−GO…脱硫ガスオイル
使用エンジン：
Waukesha社製ASTM−CFRエンジン
運転条件：
ASTMの規定に準拠
使用標準燃料：
() ASTM規格のもの（ｎ−セタン／HMN）
() 本発明によるもの
純度98.9％のノルマルテトラデカン（市販
品）とテトラリン（市販品に白土2wt％を加
え、常温にて20分間撹拌後、瀘紙で濾過し、１
ケ月間冷蔵庫内で貯蔵したもの）との組合せ。
上記運転により試料の燃料のセタン価を測定し
た結果は下記表に示すとおりである。
INDUSTRIAL APPLICATION FIELD The present invention relates to a standard fuel that is used to conveniently measure the cetane number, which indicates the self-ignition property of diesel engine fuel, and a method for measuring the cetane number described above using the standard fuel. Prior Art The cetane number, which indicates the self-ignition property of diesel engine fuel, is measured using the "Test Method for Ignition Quality" specified in ASTM D 613-84.
of Diesel Fuel by the Cetane Method, using an ASTM-CFR engine under specified operating conditions. In this measurement method, normal (n)-cetane (normal paraffin with 16 carbon atoms) with a cetane number of 100 and heptamethylnonane (abbreviated as HMN) with a cetane number of 15 are used as standard fuels. The ignitability of the sample fuel and the mixture of both in various proportions to achieve the specified cetane number were tested.
This is the cetane number of a standard fuel that shows the same ignitability as the sample fuel when compared using a CFR engine, and represents the cetane number of the fuel in question. However, when measuring the cetane number of diesel fuel, it is necessary to use the above-mentioned standard fuel of n-cetane and HMN according to the specifications, but for practical measurements, it is necessary to use standard fuel that is inexpensive, easy to obtain, and easy to handle. It is desirable to provide the following. That is, since n-cetane has a freezing point of 15 to 17°C, it freezes in winter, making it difficult to handle and, in addition, expensive.On the other hand, HMN is also expensive. Furthermore, when mixing these and using them as a standard fuel to measure the cetane number, when the fuel is burned in an engine, an ignition delay meter (ignition delay meter)
Since it takes a long time for the delay meter to stabilize, there is also the problem that the time required for the above measurement is about 60 minutes. Problems to be Solved by the Invention The present invention has been developed in view of the above-mentioned circumstances, and can be obtained relatively inexpensively, is easy to handle, and further reduces the time required to measure the cetane number. It is an object of the present invention to provide a standard fuel for use in cetane number measurement, and to provide a method for measuring the cetane number of diesel engine fuels, mainly light oil and A heavy oil, using the standard fuel. The present invention will be explained in detail below. Structure of the Invention The present invention is characterized in that a fuel obtained by combining normal tetradecane and tetralin is used as a standard fuel for measuring the cetane number of diesel engine fuel. In other words, by comparing the ignitability of the sample with a mixture of normal tetradecane, which has a high cetane number, and tetralin, which has a low cetane number, in various proportions to achieve a predetermined cetane number, using a CFR engine. This is a simple way to measure the cetane number. Means for Solving the Problems Normal tetradecane used as a standard fuel in the present invention is normal paraffin with 14 carbon atoms separated from petroleum and kerosene or gas oil fraction, and it is sufficient if the purity is 97% or more. Can be used. Incidentally, the impurities contained in normal tetradecane are generally normal paraffins having 12, 13, and 15 carbon atoms, and these are allowed as long as their content is 1 wt% or less. Further, the purity of n-tetradecane can be increased to 97% or more by subjecting the kerosene or gas oil fraction to adsorption with a molecular sieve and precision distillation. On the other hand, tetralin used as another component of the standard fuel in the present invention can be commercially available (purity 98-99%). However, care must be taken as commercially available tetralin may be partially oxidized to produce peroxide during long-term storage. If peroxide is generated in tetralin and its peroxide value becomes high, the value will change when measuring the cetane number, which is not preferable. Therefore, in the present invention, in order to prevent or reduce the amount of peroxide produced during long-term storage of tetralin,
Tetralin is adsorbed using clay, etc. In other words, by adding 2wt% of white clay to tetralin,
By stirring and contacting and then filtering, the number of peroxides can be reduced from 5 or less to 1 or less. When tetralin treated in this manner is stored in a cool and dark place, no increase in peroxide value is observed for 2 to 3 months. Moreover, the tetralin used in the present invention is easy to handle, and especially those subjected to the above-mentioned adsorption treatment have good stability. Next, to measure the cetane number of diesel engine fuel using the standard fuel according to the present invention, n
- Tetradecane (high cetane number standard fuel, cetane number 95) and tetralin (low cetane number standard fuel,
The cetane number was determined by comparing the ignitability of diesel fuel as a sample with diesel fuel prepared by mixing various ratios of Cetane No. 5) to a predetermined cetane number. Determine the value according to the following procedure. Cetane number measurement procedure: After warming up the ASTM-CFR engine, run it using the sample fuel, set the fuel injection timing to 13 degrees before top dead center, and then change the engine compression ratio. Adjust the ignition timing so that it is at the top dead center of the engine crank angle. At this time, record the handwheel scale for compression ratio adjustment. After flushing the engine with the following fuels and cleaning the fuel lines, one of two standard fuels prepared with different cetane numbers (one with a relatively low cetane number and one with a relatively high cetane number) Carry out operation using the above procedure, and adjust the injection timing so that it is 13 degrees before top dead center and the ignition timing so that it is at top dead center. Continue adjusting until the engine stabilizes and the ignition delay meter stabilizes, then record the handwheel scale for compression ratio adjustment. After flushing the engine again with the other standard fuel to clean the fuel line, run the engine using the other standard fuel and perform the same procedure as above. Next, the engine is further flushed to clean the fuel line, and then the engine is operated again using the sample fuel, and the above procedure is then repeated. That is, the engine is operated twice using the sample and two types of standard fuel. The cetane number of the sample is determined from the compression ratio adjustment handwheel scale obtained from the above measurement. Note that the difference in cetane numbers between the two types of standard fuels is 5 at most. In the above measurement procedure, conventional n-cetane/
With a standard fuel consisting of a combination of HMN, it takes about a few minutes to 10 minutes for the meter to stabilize after engine flushing, and it takes about 50 minutes in total to measure the cetane number of one sample. It takes ~60 minutes. In contrast, standard fuel consisting of the n-tetradecane/tetralin combination according to the present invention can be measured in a time of about 35 to 40 minutes. EXAMPLES AND EFFECTS OF THE INVENTION The present invention and its effects will be specifically explained below using Examples. Example 1 Fuel composition of measurement samples: Sample A...FC-LCO/DS-GO (45/55vol%) Sample B...Cetane number improver was added to sample A. (Note) FC-LCO...catalytic cracking gas oil (light cycle oil) DS-GO...desulfurized gas oil Engine using: ASTM-CFR engine made by Waukesha Operating conditions: Conforms to ASTM regulations Standard fuel used: () ASTM standard ( n-cetane/HMN) () According to the present invention Normal tetradecane with a purity of 98.9% (commercial product) and tetralin (2 wt% of white clay were added to the commercial product, stirred at room temperature for 20 minutes, filtered through filter paper,
(stored in the refrigerator for several months). The results of measuring the cetane number of the sample fuel through the above operation are shown in the table below.
【表】
(注) 表中の数値は各標準燃料を用いた場合の
試料A並びにBのデイーゼル燃料のセタン価
を示す。
表にみられるとおり、本発明による標準燃料を
用いて測定した試料Ａ並びにＢの各燃料のセタン
価は、ASTM規格の標準燃料を用いて測定した
セタン価に極めて近似しており、かつ２回繰返し
て測定したセタン価も実質的に差がないことか
ら、十分再現性があるものと言い得る。
また、ASTM規格の標準燃料ではセタン価の
測定にそれぞれ60分要したのに対し、本発明によ
る標準燃料ではそれぞれ45分間で測定可能であつ
た。なお、ASTM規格の標準燃料では、燃料の
切換に際してのイグニツシヨンデイレイメーター
の安定化には約10分要するが、本発明の標準燃料
では約６分で上記メーターの安定化がみられた。
実施例 ２
本例は、本発明による標準燃料においてノルマ
ルテトラデカンとテトラリンの混合割合を種々変
えたものの各セタン価を、ASTM規格の標準燃
料（ｎ−セタン／HMN）を用いて下記により実
測した結果を示したものである。
試料としての標準燃料の調製：
ｎ−テトラデカンとテトラリンを下記割合に混
合した。
ｎ−テトラデカン65 50 40 30 20（vol％）
テトラリン 35 50 60 70 80（vol％）
測定方法：
上記混合割合の標準燃料からなる各試料を、
ASTM規格の標準燃料を用い、ASTMの規定に
準拠して行つた。
結果は添付図に示すとおりであつて、本発明に
係る標準燃料は混合割合にかかわりなく直線性の
セタン価を示すので、デイーゼル燃料のセタン価
測定において、従来のｎ−セタン／HMNからな
るASTM規格の標準燃料の代替えとして十分使
用し得ることがわかる。[Table] (Note) The values in the table indicate the cetane number of diesel fuel of samples A and B when each standard fuel is used.
As seen in the table, the cetane numbers of each fuel of Samples A and B measured using the standard fuel according to the present invention are very close to the cetane numbers measured using the ASTM standard fuel, and Since there is virtually no difference in the cetane number measured repeatedly, it can be said that there is sufficient reproducibility. Furthermore, while it took 60 minutes to measure the cetane number using the standard fuel according to ASTM standards, it took 45 minutes to measure the cetane number using the standard fuel according to the present invention. Note that with the standard fuel according to ASTM standards, it takes about 10 minutes for the ignition delay meter to stabilize when switching fuels, but with the standard fuel of the present invention, the meter stabilized in about 6 minutes. Example 2 This example shows the results of actually measuring the cetane numbers of the standard fuel according to the present invention in which the mixing ratio of n-tetradecane and tetralin was variously changed using the ASTM standard fuel (n-cetane/HMN) as follows. This is what is shown. Preparation of standard fuel as a sample: n-tetradecane and tetralin were mixed in the following proportions. n-tetradecane 65 50 40 30 20 (vol%) Tetralin 35 50 60 70 80 (vol%) Measurement method: Each sample consisting of standard fuel with the above mixing ratio,
The tests were carried out using ASTM standard fuel and in accordance with ASTM regulations. The results are as shown in the attached figure, and since the standard fuel according to the present invention shows a linear cetane number regardless of the mixing ratio, in measuring the cetane number of diesel fuel, the conventional ASTM consisting of n-cetane/HMN was used. It can be seen that it can be used satisfactorily as a substitute for standard fuel.
添付図は、本発明に係る標準燃料のセタン価を
ASTM規格の標準燃料を用いて測定した結果を
示したものである。
The attached diagram shows the cetane number of the standard fuel according to the present invention.
This shows the results measured using standard ASTM fuel.
Claims (1)
て混合して成るセタン価測定用標準燃料。 ２ テトラリンは、吸着剤処理によりパーオキサ
イド価を5ppm以下にしたものである特許請求の
範囲第１項記載の標準燃料。 ３ 着火性の高いノルマルテトラデカンと着火性
の低いテトラリンを組合せて混合し、該混合燃料
を標準燃料として用いて試料燃料との着火性を、
CFRエンジンを用いて比較することにより、試
料燃料のセタン価を測定する方法。[Claims] 1. A standard fuel for measuring cetane number, which is made by mixing normal tetradecane and tetralin in combination. 2. The standard fuel according to claim 1, wherein the tetralin has a peroxide value of 5 ppm or less by treatment with an adsorbent. 3 Mix normal tetradecane, which has high ignitability, and tetralin, which has low ignitability, and use the mixed fuel as a standard fuel to test the ignitability with the sample fuel.
A method to measure the cetane number of a sample fuel by comparing it using a CFR engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28731386A JPS63139988A (en) | 1986-12-02 | 1986-12-02 | Standard fuel used in determining cetane number and determination of cetane number by using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28731386A JPS63139988A (en) | 1986-12-02 | 1986-12-02 | Standard fuel used in determining cetane number and determination of cetane number by using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63139988A JPS63139988A (en) | 1988-06-11 |
| JPH0338316B2 true JPH0338316B2 (en) | 1991-06-10 |
Family
ID=17715748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28731386A Granted JPS63139988A (en) | 1986-12-02 | 1986-12-02 | Standard fuel used in determining cetane number and determination of cetane number by using same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63139988A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2747322B1 (en) * | 1996-04-15 | 1998-09-25 | Total Raffinage Distribution | PROCESS AND DEVICE FOR PREPARING A FUEL, IN PARTICULAR FOR A DIESEL ENGINE, BY MIXING ITS CONSTITUENTS IN LINE |
| JP2007269865A (en) * | 2006-03-30 | 2007-10-18 | Idemitsu Kosan Co Ltd | Fuel oil for diesel engine having multi-stage injection mechanism, combustion method and diesel engine |
| JP4868297B2 (en) * | 2008-02-01 | 2012-02-01 | 株式会社デンソー | Control device for internal combustion engine |
-
1986
- 1986-12-02 JP JP28731386A patent/JPS63139988A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63139988A (en) | 1988-06-11 |
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