Piston for internal combustion engine
    24.
    发明公开
    Piston for internal combustion engine 有权
    Kolbenfüreine Brennkraftmaschine

    公开(公告)号:EP1479946A2

    公开(公告)日:2004-11-24

    申请号:EP04011918.2

    申请日:2004-05-19

    IPC分类号: F16J1/02

    摘要: A piston for an internal combustion engine of an automotive vehicle. The piston has a piston ring and a piston skirt section each of which has a sliding section in slidable contact with a cylinder bore section of a cylinder block in presence of a lubricating oil. The cylinder bore section is formed of eutectic or hyper-eutectic aluminum alloy. Additionally, a hard carbon thin film is coated on the sliding section of the piston and contains hydrogen atom in an amount of not more than 1 atomic %. Here, the lubricating oil contains at least one selected from the group consisting of ashless fatty acid ester friction modifier, ashless aliphatic amine friction modifier, polybutenyl succinimide, derivative of polybutenyl succinimide, zinc dithiophosphate, and derivative of zinc dithiophosphate.

    摘要翻译: 一种用于机动车辆的内燃机(1)的活塞(3)。 活塞(3)具有活塞环(4)和活塞裙部(3a),每个活塞环具有滑动部分,该滑动部分在润滑剂存在的情况下与气缸体(2)的气缸孔部分(2a)滑动接触 油。 气缸孔部分(2a)由共晶或超共晶铝合金形成。 另外,在活塞(3)的滑动部上涂布硬碳薄膜,其含有1原子%以下的氢原子。 这里,润滑油含有选自无灰脂肪酸酯摩擦改性剂,无灰脂肪族胺摩擦改性剂,聚丁烯基琥珀酰亚胺,聚丁烯基琥珀酰亚胺的衍生物,二硫代磷酸锌,二硫代磷酸锌的衍生物中的至少一种。

    Fuel injection valve
    25.
    发明公开
    Fuel injection valve 有权
    燃油喷射阀

    公开(公告)号:EP1469192A1

    公开(公告)日:2004-10-20

    申请号:EP04008611.8

    申请日:2004-04-08

    IPC分类号: F02M61/16 F02M61/12

    摘要: A fuel injection valve for an automotive internal combustion engine comprises a needle valve and an opposite member which are in slidable contact with each other in presence of fuel. A hard carbon thin film is coated on at least one of the sliding sections of the base materials of the needle valve and the opposite member. The hard carbon thin film has a surface hardness ranging from 1500 to 4500 kg/mm 2 in Knoop hardness, a film thickness ranging from 0.3 to 2.0 µm, and a surface roughness (Ry) (µm) which satisfies a relationship represented by the following formula (A):
          Ry
          where h is the thickness (µm) of the hard carbon thin film; Hk is the surface hardness in Knoop hardness (kg/mm 2 ) of the hard carbon thin film.

    摘要翻译: 一种用于汽车内燃机的燃料喷射阀包括针阀和相对构件,所述针阀和相对构件在存在燃料的情况下彼此可滑动地接触。 硬质碳薄膜涂覆在针阀和相对构件的基材的至少一个滑动部分上。 硬质碳薄膜的努普硬度为1500〜4500kg / mm2,膜厚为0.3〜2.0μm,表面粗糙度(Ry)(μm)满足下式 (A):Ry <(0.75-Hk / 8000)×h + 0.0875其中h是硬碳薄膜的厚度(μm) Hk是硬碳薄膜的努普硬度(kg / mm2)中的表面硬度。