Disclosed are a component for a fuel injector and a method for coating the same. The component for the fuel injector may include a base material, a bonding layer laminated on the base material, a support layer laminated on the outer surface of the bonding layer, and an NbSiCN functional layer including an NbCN layer and an SiCN layer and alternately laminated on the outer surface of the support layer, thereby reducing friction, high hardness, shock resistance, heat resistance, and durability of the component for the fuel injector.

An assembly for a fuel injector includes a base material, a coated region formed on a surface of the base material, an uncoated region formed on a surface of the base material, in contact with and supported by a jig, and formed to be partitioned from the coated region so as to prevent the coated region from peeling off during laser welding, and a coating material stacked in a multilayer structure on the coated region. As a result, friction reduction, high hardness, impact resistance, heat resistance, and durability of the assembly may be improved, and a portion requiring the coating may be precisely coated.

A problem to be solved by the present invention is to provide a new form of adsorbent suitable for a motor vehicle canister. An activated carbon fiber sheet satisfies one or two or more of conditions for indices, such as a specific surface area, a pore volume of pores having a given pore diameter, and a sheet density. An embodiment, for example, may have: a specific surface area ranging from 1400 to 2300 m.sup.2/g; a pore volume ranging from 0.20 to 0.70 cm.sup.3/g for pores having pore diameters of more than 0.7 nm and 2.0 nm or less; an abundance ratio R.sub.0.7/2.0, which is a ratio of a pore volume of micropores having pore diameters of 0.7 nm or less occupied in a pore volume of micropores having pore diameters of 2.0 nm or less, ranging from 5% to less than 25%, and a sheet density ranging from 0.030 to 0.200 g/cm.sup.3.

An object is to provide an adsorbent using activated carbon fiber, the adsorbent being suitable for motor vehicle canisters and enabling reduction in pressure loss.

An activated carbon fiber sheet for a motor vehicle canister fulfils the following conditions (1) to (4). (1) The sheet has a specific surface area ranging from 1100 to 2300 m.sup.2/g. (2) The sheet has a density ranging from 0.010 to 0.200 g/cm.sup.3 or less. (3) The sheet has a thickness ranging from 0.1 to 100.00 mm. (4) The sheet has a fiber size of 13.0 μm or larger.

The invention relates to an antiwear-coated metal component (1), in particular for a ball valve (6), the tribosurface of which component is at least partially provided with a multi-layer antiwear coating (2). The antiwear coating (2) has at least a metal adhesion layer (3a), an adhesion-promoting layer (3b) and at least one first cover layer (3c). The adhesion-promoting layer (3b) comprises a carbide-forming metal or a boride-forming metal. The at least first cover layer (3c) comprises a hydrogen-free tetrahedral carbon. The invention further relates to a method for applying an antiwear coating (2) to a metal substrate (9) in order to produce an antiwear-coated metal component (1) of this type. The invention further relates to a ball valve, comprising an antiwear-coated metal component (1) of this type and an antiwear coating (2).

A damping insulator restrains vibration to be transmitted between a fuel injection valve and a cylinder head. The fuel injection valve is attached to an insertion hole of the cylinder head. The fuel injection valve includes a stepped portion reduced in diameter in a tapered shape such that an outer-peripheral-side tapered surface is formed to face a shoulder provided in an inlet portion of the insertion hole. The damping insulator restrains the vibration by being provided between the stepped portion and the shoulder. The damping insulator includes an annular tolerance ring having a bottom surface facing the shoulder and an inner-peripheral-side tapered surface facing the outer-peripheral-side tapered surface, and a damping resin layer provided on the bottom surface or the inner-peripheral-side tapered surface of the tolerance ring. The damping resin layer contains heat-resistant resin and damping filler configured to convert vibrational energy into thermal energy.

A ball and a valve seat for a fuel injector, and a method for coating the same are provided to form a Ta—C:H—SiO functional layer having a low frictional characteristic as the outermost layer to reduce a frictional coefficient. A Mo-based material is applied to a bonding layer and a supporting layer for bonding and supporting the Ta—C:H—SiO functional layer is applied to a base material to improve heat resistance. Accordingly, only pure ionic Mo particles are deposited to form the bonding layer and the supporting layer, thereby increasing an adhesive force and a bonding force to improve durability.

Disclosed are a component for a fuel injector and a method for coating the same. The component for the fuel injector may include a base material, a bonding layer laminated on the base material, a support layer laminated on the outer surface of the bonding layer, and an NbSiCN functional layer including an NbCN layer and an SiCN layer and alternately laminated on the outer surface of the support layer, thereby reducing friction, high hardness, shock resistance, heat resistance, and durability of the component for the fuel injector.

Provided is a fuel distribution pipe connected to a fuel pipe and distributes and supplies fuel to a plurality of fuel injection devices, comprising: a tubular base material forming a body of the fuel distribution pipe; and a plating layer formed on a surface of the base material, wherein the base material includes a sealing surface formed on an inner peripheral surface thereof and comes into press-contact with the fuel pipe, and wherein a thickness of the plating layer on the sealing surface is thinner than that of the plating layer on an outer peripheral surface of the fuel distribution pipe.

A fuel injection valve includes a body that includes an injection hole through which fuel is injected, and a valve element that opens or closes the injection hole. The body includes a metallic base material configured to form the injection hole, a corrosion-resistant layer covering a surface of at least a part of the base material that forms the injection hole and being made of a less corrosive material than the base material, and a sacrificial corrosion layer located between the base material and the corrosion-resistant layer and made of a more corrosive material than the corrosion-resistant layer.