47results about "Corrosion preventing fuel injection" patented technology

One embodiment of a ferritic stainless steel sheet contains, in mass%, 0.03% or less of C, 0.05% or less of N, 1% or less of Si, 1.2% or less of Mn, 14 to 28% inclusive of Cr, 8(C+N) to 0.8% inclusive of Nb, 0.1% or less of Al and a remainder made up by Fe and unavoidable impurities, and has, formed on the surface thereof, a coating film that satisfies formula (1). df×Crf+5(Sif+3Alf) ≤ 2.0 ···(formula (1)) In the formula, df represents the thickness (nm) of the coating film; Crf represents the Cr cation fraction in the coating film; Sif represents the Si cation fraction in the coating film; and Alf represents an Al cation fraction in the coating film.

A fuel injector and a control valve used in it are disclosed. The control valve comprises: a valve seat defining a valve seating surface and a valve hole extending through a center portion of the valve seating surface in a longitudinal direction, the valve hole and the valve seating surface defining a longitudinal central axis, and the valve hole being in fluid communication with an injection valve of the fuel injector; a valve element configured to be moved between a closed position and an opened position along the longitudinal central axis, the valve element contacting and cooperating with the valve seat in the closed position to close the valve hole, and the valve element being moved away from the valve seat in the opened position to open the valve hole; and a holding block having an accommodating recess for holding the valve element; wherein the valve element is in the form of a solid of revolution, with the longitudinal central axis being the revolution axis of the solid of revolution, and the solid of revolution having a non-circular section in a longitudinal plane in which the longitudinal central axis lies so that the valve element is able to rotate around the longitudinal central axis but cannot rotate around any transverse central axis that is perpendicular to the longitudinal central axis.

A pump assembly for supplying fuel to an internal combustion engine; said pump assembly (1) comprising: - a pump head (2) in which a cylinder (3) for accommodating a sliding pumping piston is formed; - a through hole (4) extending from the cylinder (3) to the outside of the pump head (2); - a plug (5) coupled to the pump head (2) for defining the through hole (4) A suction chamber (6) communicating with the cylinder (3); wherein, the coupling between the blocking member (5) and the pump head (2) is the outer surface (8) of the surrounding wall (7) of the pump head (2) and A threaded coupling between the inner surface (10) of the surrounding wall (9) of the blocking member (5); wherein the surrounding wall (9) of the blocking member (5) comprises an inclined surface provided with a connection to the inner surface (10) The lower edge (12) of (13); wherein the projection (H) of the inclined surface (13) along a plane orthogonal to the inner surface (10) is less than twice the height (h) of the thread of the blocking member (5) .

A fuel injection valve includes a body (24, 24A, 24B, 24C, 24D) that includes an injection hole (24h) through which fuel is injected, and a valve element (30) that opens or closes the injection hole (24h). The body (24, 24A, 24B, 24C, 24D) includes a metallic base material (241) configured to form the injection hole (24h), a corrosion-resistant layer (242) covering a surface of at least a part ofthe base material (241) that forms the injection hole (24h) and being made of a less corrosive material than the base material, and a sacrificial corrosion layer (245) located between the base material and the corrosion-resistant layer (242) and made of a more corrosive material than the corrosion-resistant layer.

To provide a steel fuel conveying pipe which has high resistance to corrosive fuel and maintains reliability without damaging a direct-injection engine, and connects a high-pressure pump and a direct-injection rail with each other in a gasoline direct-injection engine system, and a fuel conveying pipe suitable as a bypass pipe for coupling direct-injection rails with each other in a V-type gasoline engine. A steel fuel conveying pipe for conveying gasoline is characterized in that a Ni-plated layer is provided on the whole inner circumferential face of the fuel conveying pipe, and an anti-rust film layer composed of a Zn-plated layer and a Zn-based alloy-plated layer is further provided on the Ni-plated layer at at least one end of the fuel conveying pipe.

A control device for an internal combustion engine that includes: a first detection unit detecting, as a first parameter, a temperature of a nozzle tip of an injector; and a second detection unit detecting, as a second parameter, a heat quantity of a cylinder head, and executes a dew condensation determination by using at least one of the first parameter and the second parameter, the control device includes: a third detection unit detecting an evaluation value allowing to evaluate a state of the internal combustion engine, a threshold value for selecting which parameter of the first and second parameters is selected being set with respect to the evaluation value, wherein the control device switches a parameter to be used to the first parameter, to the second parameter, or to both the first and second parameters in accordance with the evaluation value when executing the dew condensation determination.

A fluid injector includes a valve assembly constructed and arranged to control the flow of fluid from an inlet to an outlet of the injector. A metal housing surrounds at least a portion of the valve assembly. A plastic body is molded over at least a portion of the housing. The distal end of the body defines an integral stepped portion extending from the body. The stent surrounds at least the distal end of the body. The sealing member contacts at least surfaces of the stepped portion and the bracket to prevent liquid from entering a space between the case and the body.