公开(公告)号：US20180072961A1

公开(公告)日：2018-03-15

申请号：US15560035

申请日：2016-03-24

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Toshimasa UTAKA ,  Kazushi TAMURA ,  Hideki KAMANO ,  Akira IIJIMA

IPC: C10M169/04

Abstract: Provided are a lubricating oil composition for internal combustion engine capable of preventing a deterioration of the combustion state of a spark-ignition internal combustion engine, specifically, a lubricating oil composition to be used for a spark-ignition internal combustion engine in which a total tension per piston of tensions applied to the piston ring is 100 N or less, the lubricating oil composition being a lubricating oil composition including a base oil, (A) a calcium-based detergent, at least one selected from (B1) a sodium-based additive and (B2) a magnesium-based additive, and (C) an ash-free sulfur-based additive in predetermined contents; a method for producing the lubricating oil composition; a spark-ignition internal combustion engine using the lubricating oil composition; and a method for lubricating the internal combustion engine.

公开(公告)号：US20170183601A1

公开(公告)日：2017-06-29

申请号：US15129528

申请日：2015-03-31

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Toshimasa UTAKA

IPC: C10M161/00 ,  C10M133/44 ,  C10M145/14 ,  C10M141/06

CPC classification number: C10M161/00 ,  C10M133/44 ,  C10M141/06 ,  C10M145/14 ,  C10M169/045 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2207/026 ,  C10M2207/028 ,  C10M2207/262 ,  C10M2207/28 ,  C10M2209/084 ,  C10M2211/04 ,  C10M2215/064 ,  C10M2215/28 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2223/045 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/021 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2230/52 ,  C10N2230/68 ,  C10N2240/10 ,  C10N2260/14 ,  C10N2220/022 ,  C10M2207/289 ,  C10N2220/028

Abstract: The lubricating oil composition for an internal combustion engine of the invention contains (A) a lubricant base oil composed of a mineral oil and/or a synthetic oil, (B) a boron-containing alkenylsuccinimide and/or a boron-containing alkylsuccinimide in an amount of 0.001 to 0.1% by mass as a boron-equivalent amount based on the total amount of the composition, and (C) a poly(meth)acrylate in an amount of 0.1 to 30% by mass based on the total amount of the composition, and the poly(meth)acrylate has Mw of 100,000 to 700,000 and Mw/X of 30,000 or more, in which the weight-average molecular weight thereof is represented by Mw and the mean carbon number of the alkyl groups therein, as measured through 13C-NMR, is represented by X.

公开(公告)号：US20170137732A1

公开(公告)日：2017-05-18

申请号：US15318837

申请日：2015-09-18

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Toshimasa UTAKA

IPC: C10L10/08 ,  C10M169/04 ,  C10L1/16 ,  C10L1/195 ,  C10L1/236 ,  C10M171/02 ,  C10L1/197

Abstract: The present invention provides a lubricating oil composition including a viscosity index improver (A) containing a comb-shaped polymer and having an SSI (shear stability index) of 30 or less together with a base oil, wherein an HTHS viscosity (high temperature high shear viscosity) at 150° C. (T150) is 1.6 to 2.9 mPa·s, and a ratio of a kinematic viscosity at 40° C. (V40) [mm2/s] to the HTHS viscosity at 150° C. (T150) [mPa·s] (V40/T150) is 12.4 or less. The lubricating oil composition of the present invention is excellent in fuel consumption reducing properties in a low-temperature region assuming the time of starting an engine while making various properties, such as a viscosity, etc., in a high-temperature region assuming the time of high-speed operation of an engine favorable.

公开(公告)号：US20190100713A1

公开(公告)日：2019-04-04

申请号：US16086800

申请日：2017-03-24

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Toshimasa UTAKA ,  Kazushi TAMURA ,  Akira IIJIMA

IPC: C10M169/04 ,  C10M125/10 ,  C10M135/10 ,  C10M129/10

Abstract: Provided is a lubricating oil composition for engine equipped with a forced-induction mechanism capable of lowering the frequency of occurrence of LSPI, while using a calcium-based detergent. The lubricating oil composition for engine equipped with a forced-induction mechanism contains a base oil (A), a metal-containing surfactant (B) containing at least a calcium-containing surfactant (b1), and at least one basic compound (C) selected from a metal carbonate, a metal hydroxide, and an amine-based compound, wherein the content of sulfur contained in the metal-containing surfactant (B) is 0.2 mass % or more on the basis of the whole amount of the metal-containing surfactant (B); the content of a calcium atom is 0.08 to 0.20 mass % on the basis of the whole amount of the composition; and a mass ratio of the content of the basic compound (C) and the content of a calcium atom derived from the calcium-containing surfactant (b1) [(content of (C))/(calcium content derived from (b1))] is 2.0 or more.

公开(公告)号：US20160348027A1

公开(公告)日：2016-12-01

申请号：US15113931

申请日：2015-01-26

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Toshimasa UTAKA

IPC: C10M161/00

CPC classification number: C10M161/00 ,  C10M167/00 ,  C10M2207/262 ,  C10M2209/084 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2227/09 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2230/02 ,  C10N2230/52 ,  C10N2230/68 ,  C10N2230/74 ,  C10N2240/10

Abstract: A lubricating oil composition for an internal combustion engine according to the present invention contains a lubricating base oil, (A1) a basic calcium salicylate having a TBN of 200 mgKOH/g or more, (A2) a basic sodium sulfonate having a TBN of 200 mgKOH/g or more and/or a basic calcium sulfonate having a TBN of 50 mgKOH/g or less, (B) a binuclear organic molybdenum compound and/or a trinuclear organic molybdenum compound, and (C) a polyalkyl (meth)acrylate having an SSI of 30 or less, a total content of molybdenum derived from the binuclear and trinuclear organic molybdenum compounds being 0.025 mass % or more relative to the whole amount of the composition and the lubricating oil composition having predetermined values of a high-temperature high-shear viscosity and a NOACK value (250° C., 1 hr).

Abstract translation: 根据本发明的用于内燃机的润滑油组合物含有润滑油基础油，（A1）TBN为200mgKOH / g以上的碱性水杨酸钙，（A2）TBN为200的碱性磺酸钠 mgKOH / g以上和/或TBN为50mgKOH / g以下的碱性磺酸钙，（B）双核有机钼化合物和/或三核有机钼化合物，（C）聚（甲基）丙烯酸烷基酯 SSI为30以下，来自双核和三核有机钼化合物的钼的总含量相对于组合物的总量为0.025质量％以上，具有预定值的高温高的润滑油组合物 - 粘度和NOACK值（250℃，1小时）。

公开(公告)号：US20220186137A1

公开(公告)日：2022-06-16

申请号：US17442722

申请日：2020-03-27

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Toshimasa UTAKA

IPC: C10M135/18 ,  C10M169/04 ,  C10M133/42 ,  C10M133/56 ,  C10M137/10 ,  C10M125/22 ,  C10M129/54

Abstract: The invention addresses a problem of providing a lubricating oil composition for gas engines capable of suppressing viscosity increase while reducing a sulfated ash content and excellent in high-temperature detergency and base number retention. The lubricating oil composition is used for gas engines and contains a base oil (A), at least one ash-free additive (B) selected from an ash-free sulfur-based antioxidant (B1) and a hindered amine compound (B2), and a boronated imide-type dispersant (C), and satisfies the following requirements (X1) to (X3): Requirement (X1): the sulfated ash content is 0.2% by mass or less. Requirement (X2): the content of the ash-free additive (B) is 1.2% by mass or less based on the total amount of the lubricating oil composition, provided that in the case where the ash-free additive (B) contains the hindered amine compound (B2), the content of the hindered amine compound (B2) is less than 1.0% by mass based on the total amount of the lubricating oil composition. Requirement (X3): the content of the boron atom derived from the boronated imide-type dispersant (C) is 200 ppm by mass or more based on the total amount of the lubricating oil composition.

公开(公告)号：US20210047581A1

公开(公告)日：2021-02-18

申请号：US16979675

申请日：2019-03-14

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Moritsugu KASAI ,  Toshimasa UTAKA

IPC: C10M169/04 ,  C10M101/00 ,  C10M133/16 ,  C10M135/36 ,  C10M137/10 ,  C10M129/76

Abstract: Provided is a lubricating oil composition for use in internal-combustion engines, containing a base oil (A), an ashless dispersant (B) containing a non-boronated alkenylsuccinic acid imide (B1) and a boronated alkenylsuccinic acid imide (B2), a thiadiazole compound (C), and an aromatic carboxylate (D) having one or more hydroxy groups, wherein the content of the component (C) is 0.2 to 1.2% by mass based on the total amount of the lubricating oil composition, the content of a zinc dithiophosphate is, as calculated in terms of zinc atoms, less than 500 ppm by mass based on the total amount of the lubricating oil composition, and the content of a metal-based detergent is, as calculated in terms of metal atoms, less than 600 ppm by mass based on the total amount of the lubricating oil composition.

公开(公告)号：US20160304802A1

公开(公告)日：2016-10-20

申请号：US15038662

申请日：2014-11-25

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Kazushi TAMURA ,  Toshimasa UTAKA ,  Hideki KAMANO ,  Akira IIJIMA

IPC: C10M169/04

CPC classification number: C10M169/04 ,  C10M163/00 ,  C10M2203/022 ,  C10M2207/026 ,  C10M2207/027 ,  C10M2207/262 ,  C10M2209/084 ,  C10M2215/064 ,  C10M2215/28 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2229/02 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/022 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/52 ,  C10N2230/74 ,  C10N2240/104

Abstract: The lubricating oil composition for spark-ignition internal combustion engine according to the present invention is a lubricating oil composition to be used for a spark-ignition internal combustion engine including a piston having a piston ring, in which a total tension per piston of tensions applied to the piston ring is 30 N or less, the lubricating oil composition being a lubricating oil composition comprising a base oil, (A) an organic metal-based additive containing an alkali metal and/or an alkaline earth metal, and (B) an organic zinc-based additive, wherein a concentration of the component (A) on a basis of the total amount of the lubricating oil composition is 0.15% by mass or less as converted into a metal content; a concentration of the component (B) on a basis of the total amount of the lubricating oil composition is 0.15% by mass or less as converted into a zinc content; the product of the concentration (% by mass) of the component (A) and a base number (mgKOH/g) of the lubricating oil composition is 1.3 or less; the product of the concentration (% by mass) of the component (B) and an acid number (mgKOH/g) of the lubricating oil composition is 1.2 or less; and the lubricating oil composition has a Noack evaporation loss of 10% by mass or more and a kinematic viscosity at 100° C. of 9.3 mm2/s or less. The lubricating oil composition for spark-ignition internal combustion engine according to the present invention is capable of preventing a deterioration of the combustion state of a spark-ignition internal combustion engine.

Abstract translation: 本发明的火花点火式内燃机润滑油组合物是一种用于火花点火式内燃机的润滑油组合物，其包括具有活塞环的活塞，其中每个活塞的总张力施加在其上 活塞环为30N以下，润滑油组合物为含有基油的润滑油组合物，（A）含有碱金属和/或碱土金属的有机金属类添加剂，（B） 有机锌系添加剂，其中，基于所述润滑油组合物的总量，所述成分（A）的浓度为0.15质量％以下。 基于润滑油组合物的总量，组分（B）的浓度为0.15质量％以下，转化为锌含量; 组分（A）的浓度（质量％）和润滑油组合物的碱值（mgKOH / g）的乘积为1.3以下; 组分（B）的浓度（质量％）和润滑油组合物的酸值（mgKOH / g）的乘积为1.2以下; 润滑油组合物的Noack蒸发损失为10质量％以上，100℃下的运动粘度为9.3mm 2 / s以下。 根据本发明的用于火花点火内燃机的润滑油组合物能够防止火花点火式内燃机的燃烧状态的劣化。