JP2002060776A - Lubricant oil composition for diesel engine with device for removing diesel fine particle - Google Patents
Lubricant oil composition for diesel engine with device for removing diesel fine particleInfo
- Publication number
- JP2002060776A JP2002060776A JP2000250547A JP2000250547A JP2002060776A JP 2002060776 A JP2002060776 A JP 2002060776A JP 2000250547 A JP2000250547 A JP 2000250547A JP 2000250547 A JP2000250547 A JP 2000250547A JP 2002060776 A JP2002060776 A JP 2002060776A
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- JP
- Japan
- Prior art keywords
- dpf
- diesel
- oil composition
- filter
- molybdenum
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術】本発明は、ディーゼル微粒子除去
装置（ディーゼル・パティキュレート・フィルター、以
下「ＤＰＦ」と略記する。）付きディーゼルエンジン用
潤滑油組成物、さらに詳しくは、ＤＰＦのフィルターに
おける灰分詰まりを減少させ得ると共に、ＤＰＦのフィ
ルターで捕集された微粒子状物質（パティキュレート・
マター、以下「ＰＭ」と略記する。）の燃焼性を向上さ
せ、該ＰＭを低温で安定して燃焼させることができ、そ
の除去効率を高め、かつＤＰＦの長寿命化を図ることの
できるＤＰＦ付きディーゼルエンジン用潤滑油組成物に
関するものである。BACKGROUND OF THE INVENTION The present invention relates to a lubricating oil composition for a diesel engine equipped with a diesel particulate filter (Diesel Particulate Filter, hereinafter abbreviated as "DPF"), and more particularly, to ash clogging in a DPF filter. And the particulate matter (particulates and particulate matter) collected by the DPF filter.
Matter, hereinafter abbreviated as “PM”. The present invention relates to a lubricating oil composition for a diesel engine with a DPF, which is capable of improving the combustibility of the PM, stably burning the PM at a low temperature, increasing the removal efficiency thereof, and extending the life of the DPF. It is.
【０００２】[0002]
【従来の技術】ディーゼルエンジン車は、ガソリンエン
ジン車に比べて、燃費効率がよく、二酸化炭素の削減に
有効である上、燃料油として用いられる軽油は、ガソリ
ンに比べてコストが低いというメリットがある。しかし
ながら、ディーゼル車から排出される燃焼ガス中に含ま
れるＰＭが、近年、環境汚染の問題で大きくとりあげら
れている。このＰＭは、すすなどの燃料油の細かな燃え
かすであって、人体に入ると呼吸器系に悪影響を与える
ことが知られている。したがって、排出ガス中のＰＭの
削減がディーゼル車の最大の課題となっている。そのた
め、わが国においては、２００５年に達成をめざす新規
制では、メーカー各社は現行規制の１／３までＰＭ排出
量を削減しなければならず、また、東京都においては２
００３年を目途に都内を走るディーゼル車にＤＰＦの装
着を義務づけることを検討しており、他の自治体にも広
がる可能性が大きい。2. Description of the Related Art Diesel engine vehicles have better fuel efficiency than gasoline engine vehicles, are effective in reducing carbon dioxide, and have the advantage that light oil used as fuel oil is lower in cost than gasoline. is there. However, PM contained in the combustion gas discharged from diesel vehicles has recently been widely considered due to the problem of environmental pollution. This PM is a fine burnt of fuel oil such as soot, and is known to have an adverse effect on the respiratory system when it enters the human body. Therefore, reduction of PM in exhaust gas is the biggest issue for diesel vehicles. Therefore, in Japan, new regulations aimed at achieving in 2005 require manufacturers to reduce PM emissions to one-third of the current regulations.
We are considering obligating diesel vehicles running in Tokyo to have a DPF by 2003, and it is likely that other vehicles will spread to other local governments.
【０００３】このような事情から、効率がよく、実用的
なＤＰＦの開発が積極的に行われており、現在数種の形
式のＤＰＦ、具体的には（１）交互再生式ＤＰＦ、
（２）ＮＯ2 酸化方式による連続再生式ＤＰＦ、（３）
触媒酸化方式による連続再生式ＤＰＦ、（４）間欠再生
式ＤＰＦなどが提案されている。上記（１）の交互再生
式ＤＰＦは、炭化ケイ素繊維不織布の両面を金網状ヒー
ターと保護金網で挟んでなるフィルターユニットを２個
用い、捕集と再生を交互に行う切り替え方式のものであ
る。このＤＰＦは、硫黄分の高い現行軽油にも対応でき
るが、ＰＭを燃焼させるために、大電流が必要であり、
専用の大容量発電機の搭載を必要とする上、急激な燃焼
によりフィルターが損傷するおそれがあるなどの問題を
有している。Under such circumstances, efficient and practical DPFs are being actively developed. Currently, several types of DPFs, specifically (1) an alternate regeneration DPF,
(2) Continuous regeneration type DPF by NO 2 oxidation method, (3)
A continuous regeneration type DPF using a catalytic oxidation method, (4) an intermittent regeneration type DPF, and the like have been proposed. The alternating regeneration type DPF of the above (1) is a switching type in which collection and regeneration are alternately performed by using two filter units in which both sides of a silicon carbide fiber nonwoven fabric are sandwiched between a wire mesh heater and a protective wire mesh. This DPF can handle the current diesel oil with a high sulfur content, but requires a large current to burn PM.
In addition to the necessity of mounting a dedicated large-capacity generator, there is a problem that the filter may be damaged by rapid combustion.
【０００４】（２）のＮＯ2 酸化方式による連続再生式
ＤＰＦは、フィルターとしてウオールフローハニカム構
造のコージェライトからなる多孔質セラミックを用い、
その上流側に設けた酸化触媒により、ＮＯｘをＮＯ2 に
酸化し、このＮＯ2 の強い酸化力を利用して、低温でフ
ィルターに捕集されたＰＭを燃焼させる連続再生式装置
である。しかしながら、この方式では、排ガス中の硫黄
分により、該酸化触媒の活性が劣化し、充分に機能を発
揮しないため、燃料油中の硫黄分を低下させる必要があ
り、現行の軽油には適用できにくいという問題がある。
（３）の触媒酸化方式による連続再生式ＤＰＦは、二種
類の金属触媒をコーティングしたウオールフローハニカ
ム構造のコージェライトからなる多孔質セラミックフィ
ルターを用い、ヒーターなどの加熱装置は必要ではな
く、金属触媒の作用のみで該フィルターに捕集されたＰ
Ｍを燃焼させる連続再生式装置である。この方式では、
該金属触媒は排ガス中の硫黄分の影響を比較的受けにく
いため、現行軽油に適用可能であるが、リンにより影響
を受けやすく、また、硫黄分が少ないほど高性能を発揮
する。さらに、排気温度が３００℃程度以上となる走行
が一定比率以上必要であるため、低速で長時間走行する
車両や乗用車には適用が困難である。（４）の間欠再生
式ＤＰＦは、ウオールフローハニカム構造の炭化ケイ素
からなる多孔質セラミックフィルターを用い、ＰＭを捕
集し、再生時には燃料を噴射して排ガス温度を上昇さ
せ、酸化触媒により炭化水素や一酸化炭素を酸化してさ
らに温度を上げ、ＰＭを燃焼させる方式である。なお、
この方式においては、燃料油中にセリウム化合物を添加
し、ＰＭ発生量を低減させる。この方式は、現行軽油に
適用可能であるが、再生用の電源設備が必要であり、ま
た、ＰＭの燃焼後酸化セリウムが残り、フィルターに堆
積し、ＤＰＦの寿命を低下させるという問題がある。The continuous regeneration type DPF of (2) using the NO 2 oxidation method uses a porous ceramic made of cordierite having a wall flow honeycomb structure as a filter.
By the oxidation catalyst provided on the upstream side, to oxidize NOx to NO 2, by using a strong oxidizing power of this NO 2, a continuous regeneration type apparatus for burning PM collected in the filter at low temperatures. However, in this method, the activity of the oxidation catalyst is degraded due to the sulfur content in the exhaust gas, and the function of the oxidation catalyst is not sufficiently exhibited. Therefore, it is necessary to reduce the sulfur content in the fuel oil. There is a problem that it is difficult.
The continuous regeneration type DPF of the catalytic oxidation method (3) uses a porous ceramic filter made of cordierite having a wall-flow honeycomb structure coated with two kinds of metal catalysts, and does not require a heating device such as a heater. P collected by the filter only by the action of
It is a continuous regeneration type device for burning M. In this scheme,
The metal catalyst is relatively insensitive to the sulfur content in the exhaust gas, and thus can be applied to existing diesel oil. However, the metal catalyst is more susceptible to phosphorus and exhibits higher performance as the sulfur content is lower. In addition, since a certain ratio or more is required for traveling at an exhaust gas temperature of about 300 ° C. or more, it is difficult to apply the method to a vehicle or a passenger car traveling at a low speed for a long time. (4) The intermittent regeneration type DPF uses a porous ceramic filter made of silicon carbide having a wall flow honeycomb structure, captures PM, injects fuel at the time of regeneration, raises the temperature of exhaust gas, and uses hydrocarbons by an oxidation catalyst. In this method, PM is burned by oxidizing carbon monoxide and further raising the temperature. In addition,
In this method, a cerium compound is added to the fuel oil to reduce the amount of PM generated. Although this method can be applied to existing light oil, it requires a power supply for regeneration, and also has a problem that cerium oxide remains after PM combustion and deposits on a filter, thereby shortening the life of the DPF.
【０００５】このように、現在開発が進められているＤ
ＰＦは、いずれも一長一短があり、必ずしも充分に満足
し得るものではない。工業的には、ＤＰＦの機能を効果
的に発揮させ、かつその長寿命化を図ることが重要であ
り、そのためには、ＰＭをできるだけ低温で燃焼させる
と共に、フィルターの詰まりをできるだけ低減させるこ
とが肝要である。フィルターが詰まると背圧が上昇する
ため、ディーゼル機関の効率を低下させる。このフィル
ターの詰まりにはＰＭの燃焼残詰まりと潤滑油灰分の詰
まりがある。As described above, D which is currently under development is
PF has both advantages and disadvantages, and is not always satisfactory. Industrially, it is important to effectively exert the function of the DPF and extend its life. To do so, it is necessary to burn PM at as low a temperature as possible and to reduce filter clogging as much as possible. It is vital. If the filter is clogged, the back pressure will increase, reducing the efficiency of the diesel engine. The clogging of the filter includes clogging of PM residue and clogging of lubricating oil ash.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、このような
状況下で、ＤＰＦのフィルターにおける灰分詰まりを減
少させ得ると共に、ＤＰＦのフィルターで捕集されたＰ
Ｍの燃焼性を向上させ、該ＰＭを低温で安定して燃焼さ
せることができ、その除去効率を高め、かつＤＰＦの長
寿命化を図ることのできるＤＰＦ付きディーゼルエンジ
ン用潤滑油組成物を提供することを目的とするものであ
る。SUMMARY OF THE INVENTION Under such circumstances, the present invention can reduce ash clogging in a DPF filter, and can reduce PPF collected by a DPF filter.
Provided is a lubricating oil composition for a DPF-equipped diesel engine that can improve the combustibility of M, stably burn the PM at a low temperature, increase the removal efficiency thereof, and extend the life of the DPF. It is intended to do so.
【０００７】[0007]
【課題を解決するための手段】本発明者は、前記の好ま
しい性質を有するＤＰＦ付きディーゼルエンジン用潤滑
油組成物を開発すべく鋭意研究を重ねた結果、硫酸灰分
及び硫黄分含有量がそれぞれある値以下であり、かつモ
リブデン含有量がある値以上である潤滑油組成物が、そ
の目的に適合し得ることを見出した。本発明は、かかる
知見に基づいて完成したものである。すなわち、硫酸灰
分が1.０重量％以下、硫黄分含有量が0.３重量％以下及
びモリブデン含有量が１００ｐｐｍ以上であることを特
徴とするＤＰＦ付きディーゼルエンジン用潤滑油組成物
を提供するものである。The inventor of the present invention has conducted intensive studies to develop a lubricating oil composition for a diesel engine with a DPF having the above-mentioned preferable properties, and as a result, it has a sulfated ash content and a sulfur content, respectively. It has been found that a lubricating oil composition having a molybdenum content equal to or less than the value and a molybdenum content equal to or greater than a certain value can be suitable for the purpose. The present invention has been completed based on such findings. That is, the present invention provides a lubricating oil composition for a diesel engine with a DPF, characterized by having a sulfated ash content of 1.0% by weight or less, a sulfur content of 0.3% by weight or less, and a molybdenum content of 100 ppm or more. It is.
【０００８】[0008]
【発明の実施の形態】本発明のＤＰＦ付きディーゼルエ
ンジン用潤滑油組成物（以下、「本発明の潤滑油組成
物」と称すことがある。）は、ＤＰＦを装着したディー
ゼルエンジンに潤滑油として用いられるものであり、そ
の基油としては、通常、鉱油や合成油が用いられる。こ
の鉱油や合成油の種類、その他については、特に制限は
ないが、通常は１００℃における動粘度が1.５〜３０ｍ
ｍ2 ／ｓの範囲にあるものが用いられる。ここで、鉱油
としては、例えば、溶剤精製、水添精製などの通常の精
製法により得られたパラフィン基系鉱油、中間基系鉱油
又はナフテン基系鉱油などが挙げられる。また、合成油
としては、例えば、ポリブテン、ポリオレフィン〔α−
オレフィン（共）重合体〕、各種のエステル（例えば、
ポリオールエステル、二塩基酸エエステル、リン酸エス
テルなど）、各種のエーテル（例えば、ポリフェニルエ
ーテル）、シリコーン油、アルキルベンゼン、アルキル
ナフタレンなどが挙げられる。BEST MODE FOR CARRYING OUT THE INVENTION The lubricating oil composition for a diesel engine with a DPF of the present invention (hereinafter sometimes referred to as the "lubricating oil composition of the present invention") is used as a lubricating oil for a diesel engine equipped with a DPF. Mineral oil or synthetic oil is usually used as the base oil. The type of the mineral oil and the synthetic oil and others are not particularly limited, but usually the kinematic viscosity at 100 ° C. is 1.5 to 30 m.
Those having a range of m 2 / s are used. Here, examples of the mineral oil include a paraffinic mineral oil, an intermediate mineral oil, and a naphthenic mineral oil obtained by ordinary refining methods such as solvent refining and hydrogenation refining. Further, as the synthetic oil, for example, polybutene, polyolefin [α-
Olefin (co) polymer], various esters (for example,
Examples thereof include polyol esters, dibasic acid esters, and phosphoric acid esters), various ethers (for example, polyphenyl ether), silicone oil, alkylbenzene, and alkylnaphthalene.
【０００９】本発明においては、基油として、上記鉱油
を一種用いてもよく、二種以上を組み合わせて用いても
よい。また、上記合成油を用いてもよく、二種以上組み
合わせて用いてもよい。さらには、鉱油一種以上と合成
油一種以上とを組み合わせて用いてもよい。本発明の潤
滑油組成物においては、硫酸灰分は1.０重量％以下であ
ることが必要である。この硫酸灰分とは、試料を燃やし
て生じた炭化残留物に硫酸を加えて加熱し、恒量にした
灰分をいい、通常潤滑油組成物中の金属系添加剤の大略
の量を知るために用いられる。この硫酸灰分量が1.０重
量％を超えるとＤＰＦのフィルターに堆積する灰分量が
多く、該フィルターの灰分詰まりの原因となり、ＤＰＦ
の寿命が短くなる。また、後述のモリブデン化合物によ
るＰＭの燃焼性向上効果が発揮されにくくなる。これら
の点から、該硫酸灰分量は0.９重量％以下が好ましい。
また、硫黄分含有量は0.３重量％以下であることが必要
である。この硫黄分含有量が0.３重量％を超えると、Ｄ
ＰＦに硫黄が触媒毒となる金属系触媒を用いている場
合、該触媒の活性劣化が生じ、ＤＰＦの機能が充分に発
揮されにくくなる。この点から、硫黄分含有量は0.２５
重量％以下が好ましい。In the present invention, one of the above mineral oils may be used as the base oil, or two or more of them may be used in combination. Further, the above synthetic oils may be used, or two or more kinds may be used in combination. Further, one or more mineral oils and one or more synthetic oils may be used in combination. In the lubricating oil composition of the present invention, the sulfated ash content needs to be 1.0% by weight or less. The sulfated ash is a constant weight ash obtained by adding sulfuric acid to a carbonized residue generated by burning a sample and heating it, and is usually used to know the approximate amount of a metal additive in a lubricating oil composition. Can be If the amount of sulfated ash exceeds 1.0% by weight, the amount of ash deposited on the filter of the DPF is large, causing ash clogging of the filter.
Life is shortened. Further, the effect of improving the flammability of PM by the molybdenum compound described below is less likely to be exhibited. From these points, the amount of the sulfated ash is preferably 0.9% by weight or less.
Further, the sulfur content needs to be 0.3% by weight or less. If the sulfur content exceeds 0.3% by weight, D
When a metal-based catalyst in which sulfur is a catalyst poison is used for the PF, the activity of the catalyst is deteriorated, and the function of the DPF is hardly exhibited sufficiently. From this point, the sulfur content is 0.25
% By weight or less is preferred.
【００１０】さらに、モリブデン含有量は、１００ｐｐ
ｍ以上であることが必要である。このモリブデンは、モ
リブデン酸化物やモリブデンと他の元素との複合酸化物
となって、ＤＰＦのフィルターで捕集されたＰＭ中に混
入する。その結果、該ＰＭの燃焼性を向上させて、燃焼
温度を４０〜５０℃程度低下させ、ＤＰＦの寿命を延長
させる働きをする。この作用は、排出ガス中の他の成
分、例えば硫黄化合物やリン化合物の影響を受けること
なく、安定に発揮される。モリブデン含有量が１００ｐ
ｐｍ未満では上記作用が充分に発揮されず、本発明の目
的が達せられない。特に、モリブデン含有量は３００ｐ
ｐｍ以上が好ましい。なお、モリブデン含有量の上限
は、前述の硫酸灰分量の規定により、制限される。この
モリブデン源となるモリブデン化合物としては、本発明
の潤滑油組成物に分散又は溶解し得るものであればよ
く、特に制限されず、無機及び有機モリブデン化合物の
いずれも用いることができるが、該潤滑油組成物に溶解
する油溶性のものが好適である。油溶性モリブデン化合
物としては、例えばアルキルリン酸モリブデン塩、カル
ボン酸モリブデン塩などの有機酸のモリブデン塩、さら
にはモリブデン酸やリンモリブデン酸、ケイモリブデン
酸などのアルキルアミン塩、モリブデンのチオカルバミ
ン酸塩（ＭｏＤＴＣ）やチオリン酸塩（ＭｏＤＴＰ）な
どが挙げられる。なお、ＭｏＤＴＣやＭｏＤＴＰを用い
る場合には、前述の硫黄分含有量の制限を満たすことが
必要である。なお、燃焼残分としてＭｏＯ3 又はリンモ
リブデン酸となるものが好ましい。Further, the molybdenum content is 100 pp
m or more. This molybdenum becomes a molybdenum oxide or a composite oxide of molybdenum and other elements, and is mixed into the PM collected by the DPF filter. As a result, it functions to improve the flammability of the PM, lower the combustion temperature by about 40 to 50 ° C., and extend the life of the DPF. This effect is stably exhibited without being affected by other components in the exhaust gas, for example, a sulfur compound or a phosphorus compound. Molybdenum content is 100p
If it is less than pm, the above effect cannot be sufficiently exerted, and the object of the present invention cannot be achieved. In particular, the molybdenum content is 300p
pm or more is preferred. Note that the upper limit of the molybdenum content is limited by the above-mentioned regulation of the amount of sulfated ash. The molybdenum compound serving as the molybdenum source is not particularly limited as long as it can be dispersed or dissolved in the lubricating oil composition of the present invention, and any of inorganic and organic molybdenum compounds can be used. Oil-soluble ones that dissolve in the oil composition are preferred. Examples of the oil-soluble molybdenum compound include molybdenum alkyl phosphates, molybdenum salts of organic acids such as molybdenum carboxylate, molybdic acid, phosphomolybdic acid, alkylamine salts such as silico-molybdic acid, and molybdenum thiocarbamate. (MoDTC) and thiophosphate (MoDTP). When MoDTC or MoDTP is used, it is necessary to satisfy the above-mentioned restriction on the sulfur content. Preferably, MoO 3 or phosphomolybdic acid is used as the combustion residue.
【００１１】本発明の潤滑油組成物には、従来ディーゼ
ルエンジン用潤滑油に慣用されている各種添加剤を含有
させることができる。この添加剤としては、例えば金属
系清浄剤、無灰分散剤、耐摩耗剤、酸化防止剤、粘度指
数向上剤、流動点降下剤、防錆剤、金属腐食防止剤、消
泡剤、界面活性剤などが挙げられる。ここで、金属系清
浄剤としては、Ｃａ−スルホネート、Ｃａ−サリチレー
ト、Ｃａ−フィネート、Ｍｇ−スルホネート、Ｍｇ−サ
リチレートなどが挙げられる。これらの金属系清浄剤の
含有量は、前述の硫酸灰分量が1.０重量％を超えないよ
うに制限される。また、スルホネートを用いる場合は、
さらに、硫黄分含有量が３重量％を超えないように制限
される。無灰分散剤としては、通常ホウ素系イミドやビ
スイミドなどが用いられ、また、耐摩耗剤としては、例
えばチオリン酸亜鉛（ＺｎＤＴＰ）系や硫黄系のものな
どが挙げられる。これらの硫黄含有耐摩耗剤を用いる場
合は、前述の硫黄分含有量の条件を満たすことが必要で
ある。また、チオリン酸亜鉛系のものを用いる場合は、
さらに硫酸灰分量の条件を満たすことが必要である。The lubricating oil composition of the present invention can contain various additives conventionally used in lubricating oils for diesel engines. Such additives include, for example, metal detergents, ashless dispersants, antiwear agents, antioxidants, viscosity index improvers, pour point depressants, rust inhibitors, metal corrosion inhibitors, defoamers, surfactants And the like. Here, examples of the metal-based detergent include Ca-sulfonate, Ca-salicylate, Ca-finate, Mg-sulfonate, and Mg-salicylate. The content of these metallic detergents is limited so that the above-mentioned sulfated ash content does not exceed 1.0% by weight. When using a sulfonate,
Furthermore, the sulfur content is limited so as not to exceed 3% by weight. As the ashless dispersant, a boron-based imide or a bisimide is usually used, and as the antiwear agent, for example, a zinc thiophosphate (ZnDTP) -based or sulfur-based one can be used. When these sulfur-containing antiwear agents are used, it is necessary to satisfy the above-mentioned conditions for the sulfur content. When using a zinc thiophosphate-based material,
Furthermore, it is necessary to satisfy the condition of the amount of sulfated ash.
【００１２】[0012]
【実施例】次に、本発明を実施例により、さらに詳しく
説明するが、本発明は、これらの例によってなんら限定
されるものではない。 参考例 ＰＭとしてカーボンブラック〔三菱化学（株）製「ＭＡ
１００」〕を用い、この１００重量部に対し、燃焼残分
として第１表に示すモリブデン化合物及び他の金属化合
物の粉末を１０重量部の割合で混合し、その混合物の燃
焼温度をＤＴ−ＴＧＡ（示差熱−熱重量分析）により、
空気中、１０℃／分の昇温速度の条件で測定した。な
お、カーボンブラックのみの燃焼温度も同様にして測定
した。結果を第１表に示す。Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Reference example Carbon black [Mitsubishi Chemical Corporation "MA"
100 "), and powder of the molybdenum compound and the other metal compound shown in Table 1 was mixed at a ratio of 10 parts by weight to 100 parts by weight as a combustion residue, and the combustion temperature of the mixture was set to DT-TGA. (Differential thermal-thermogravimetric analysis)
The measurement was performed in air at a rate of temperature rise of 10 ° C./min. The combustion temperature of only carbon black was measured in the same manner. The results are shown in Table 1.
【００１３】[0013]
【表１】 [Table 1]
【００１４】第１表から明らかなように、モリブデン化
合物が存在すると、ＰＭの燃焼温度を下げることが分か
る。 実施例１〜４及び比較例１〜７ 第２表に示す組成の潤滑油組成物を調製し、下記の方法
に従って、灰分を生成させ、その灰分を混合して燃焼温
度を参考例と同様にして測定した。その結果を第２表に
示す。 ＜灰分の生成＞潤滑油をルツボに入れて引火点以上の温
度に加熱し、点火する。点火した火種が燃えつきるのを
待ち、ルツボごと５００℃の炉に３時間入れて熱処理し
た後放冷して調製した。As is apparent from Table 1, the presence of the molybdenum compound lowers the burning temperature of PM. Examples 1 to 4 and Comparative Examples 1 to 7 A lubricating oil composition having the composition shown in Table 2 was prepared, ash was produced according to the following method, and the ash was mixed to make the combustion temperature the same as in the reference example. Measured. Table 2 shows the results. <Ash generation> Lubricant is put into a crucible and heated to a temperature above the flash point and ignited. After waiting for the ignited fire to burn, the crucible was placed in a furnace at 500 ° C. for 3 hours, heat-treated, and then allowed to cool to prepare.
【００１５】[0015]
【表２】 [Table 2]
【００１６】[0016]
【表３】 [Table 3]
【００１７】〔注〕 ＴＢＮ：全塩基価 粘度指数向上剤：ＯＣＰ（オレフィンコポリマー）[Note] TBN: Total base number Viscosity index improver: OCP (olefin copolymer)
【００１８】第２表から分かるように、実施例のもの
は、比較例のものに比べて、ＰＭの燃焼温度が約４０〜
５０℃低い。As can be seen from Table 2, the combustion temperature of the embodiment is about 40 to 40 times higher than that of the comparative example.
50 ° C lower.
【００１９】[0019]
【発明の効果】本発明のＤＰＦ付きディーゼルエンジン
用潤滑油組成物は、ＤＰＦのフィルターにおける灰分詰
まりを減少させ得ると共に、ＤＰＦのフィルターで捕集
されたＰＭの燃焼性を、排出ガス中の硫黄化合物やリン
化合物の影響を受けることなく向上させ、該ＰＭを低温
で安定して燃焼させることができ、その除去効率を高
め、かつＤＰＦの長寿命化を図ることができる。Industrial Applicability The lubricating oil composition for a diesel engine with a DPF of the present invention can reduce ash clogging in a DPF filter, and can reduce the flammability of PM collected by the DPF filter by reducing sulfur in exhaust gas. The PM can be improved without being affected by the compound or the phosphorus compound, the PM can be stably burned at a low temperature, the removal efficiency thereof can be increased, and the life of the DPF can be extended.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｃ１０Ｎ 10:12 Ｃ１０Ｎ 10:12 20:00 20:00 Ｚ 40:25 40:25 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) // C10N 10:12 C10N 10:12 20:00 20:00 Z 40:25 40:25
Claims (2)
量が0.３重量％以下及びモリブデン含有量が１００ｐｐ
ｍ以上であることを特徴とするディーゼル微粒子除去装
置付きディーゼルエンジン用潤滑油組成物。1. A sulfated ash content of 1.0% by weight or less, a sulfur content of 0.3% by weight or less, and a molybdenum content of 100 pp.
m or more, and a lubricating oil composition for a diesel engine equipped with a diesel particulate removing device.
化合物を含む請求項１記載の潤滑油組成物。2. The lubricating oil composition according to claim 1, comprising an oil-soluble molybdenum compound as a molybdenum source.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000250547A JP5231694B2 (en) | 2000-08-22 | 2000-08-22 | Lubricating oil composition for diesel engine with diesel particulate removal device |
| PCT/JP2001/007165 WO2002016532A1 (en) | 2000-08-22 | 2001-08-21 | Additive for diesel particulate filter |
| US10/344,696 US6962614B2 (en) | 2000-08-22 | 2001-08-21 | Additive for diesel particulate filter |
| EP01957010.0A EP1362905B1 (en) | 2000-08-22 | 2001-08-21 | Use of an oil composition for diesel particulate filter |
| US10/946,062 US7989406B2 (en) | 2000-08-22 | 2004-09-22 | Additive for diesel particulate filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000250547A JP5231694B2 (en) | 2000-08-22 | 2000-08-22 | Lubricating oil composition for diesel engine with diesel particulate removal device |
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| JP2011272483A Division JP2012052146A (en) | 2011-12-13 | 2011-12-13 | Lubricating oil composition for diesel engine with diesel particulate removing device |
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| JP5231694B2 JP5231694B2 (en) | 2013-07-10 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1489275A1 (en) * | 2003-06-18 | 2004-12-22 | Peugeot Citroen Automobiles S.A. | System of additive supply for combustion engine |
| JP2005521824A (en) * | 2002-03-28 | 2005-07-21 | ザ ルブリゾル コーポレイション | Method for operating an internal combustion engine by introducing a detergent into the combustion chamber |
| JP2006506498A (en) * | 2002-11-15 | 2006-02-23 | ビーピー オイル インターナショナル リミテッド | Methods for reducing dust emissions |
| JP2006131766A (en) * | 2004-11-05 | 2006-05-25 | Asahi Denka Kogyo Kk | Engine oil composition |
| WO2008029756A1 (en) | 2006-09-04 | 2008-03-13 | Idemitsu Kosan Co., Ltd. | Lubricant composition for internal combustion engine |
| EP1985690A2 (en) | 2007-04-27 | 2008-10-29 | TonenGeneral Sekiyu Kabushiki Kaisha | Internal-combustion engine lubrican composition |
| WO2009050984A1 (en) | 2007-10-16 | 2009-04-23 | Idemitsu Kosan Co., Ltd. | Lubricant oil composition |
| EP2133406A1 (en) | 2008-06-09 | 2009-12-16 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for internal combustion engine |
| CN108126637A (en) * | 2018-01-11 | 2018-06-08 | 辽宁石油化工大学 | A kind of silicon carbide microchannel alkylation reactor and its application method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012052146A (en) * | 2011-12-13 | 2012-03-15 | Idemitsu Kosan Co Ltd | Lubricating oil composition for diesel engine with diesel particulate removing device |
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|---|---|---|---|---|
| JP2000119680A (en) * | 1998-10-20 | 2000-04-25 | Cosmo Sekiyu Lubricants Kk | Diesel engine oil composition |
| JP2002053888A (en) * | 2000-06-02 | 2002-02-19 | Chevron Oronite Ltd | Lubricant composition |
-
2000
- 2000-08-22 JP JP2000250547A patent/JP5231694B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000119680A (en) * | 1998-10-20 | 2000-04-25 | Cosmo Sekiyu Lubricants Kk | Diesel engine oil composition |
| JP2002053888A (en) * | 2000-06-02 | 2002-02-19 | Chevron Oronite Ltd | Lubricant composition |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005521824A (en) * | 2002-03-28 | 2005-07-21 | ザ ルブリゾル コーポレイション | Method for operating an internal combustion engine by introducing a detergent into the combustion chamber |
| US7825076B2 (en) | 2002-11-15 | 2010-11-02 | Bp Oil International Limited | Method of reducing particulate emissions |
| JP2006506498A (en) * | 2002-11-15 | 2006-02-23 | ビーピー オイル インターナショナル リミテッド | Methods for reducing dust emissions |
| FR2856425A1 (en) * | 2003-06-18 | 2004-12-24 | Peugeot Citroen Automobiles Sa | ADDITIVE FEEDING SYSTEM FOR MOTOR VEHICLE ENGINE |
| EP1489275A1 (en) * | 2003-06-18 | 2004-12-22 | Peugeot Citroen Automobiles S.A. | System of additive supply for combustion engine |
| JP2006131766A (en) * | 2004-11-05 | 2006-05-25 | Asahi Denka Kogyo Kk | Engine oil composition |
| JP4718159B2 (en) * | 2004-11-05 | 2011-07-06 | 株式会社Ａｄｅｋａ | Engine oil composition |
| WO2008029756A1 (en) | 2006-09-04 | 2008-03-13 | Idemitsu Kosan Co., Ltd. | Lubricant composition for internal combustion engine |
| EP1985690A2 (en) | 2007-04-27 | 2008-10-29 | TonenGeneral Sekiyu Kabushiki Kaisha | Internal-combustion engine lubrican composition |
| WO2009050984A1 (en) | 2007-10-16 | 2009-04-23 | Idemitsu Kosan Co., Ltd. | Lubricant oil composition |
| EP2133406A1 (en) | 2008-06-09 | 2009-12-16 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for internal combustion engine |
| CN108126637A (en) * | 2018-01-11 | 2018-06-08 | 辽宁石油化工大学 | A kind of silicon carbide microchannel alkylation reactor and its application method |
| CN108126637B (en) * | 2018-01-11 | 2023-10-13 | 辽宁石油化工大学 | Silicon carbide microchannel alkylation reactor and application method thereof |
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