Abstract:
The present invention relates to a fuel heating system (10) for application in fuel injector galleries. Such system comprises a primary fuel gallery (20) comprising a first fuel inlet region (21), at least an upper heating region (25), a heating element (40) comprising a heating surface (41) and associated with the said upper heating region (25), a region of passage of fuel (42) associated with the heating surface (41), and a secondary fuel gallery (30) comprising at least a second fuel inlet region (32) and a second fuel outlet region (31), they being fluidically connected to the secondary fuel gallery (30), wherein the region of passage of fuel (42) fluidically connects the primary fuel gallery (20) to the second fuel inlet region (32) of the secondary fuel gallery (30).
Abstract:
The present invention relates to a one piece oil control ring (10) for an internal combustion engine capable of readily conforming to a cylinder liner (20) by virtue of the excellent flexibility of the ring (10), comprising a first surface (4) substantially parallel to the internal surface of the cylinder liner, wherefrom there extends a second substantially inclined surface (5), and comprising a tempered martensitic matrix capable of receiving a nitrided layer (12), having high hardness, ensuring excellent resistance to wear and, consequently, high durability of the ring.
Abstract:
The invention relates to a filter device (1), in particular an air filter, for a fresh air system of an internal combustion engine. The filter device (1) comprises a filter housing (2) which delimits a housing interior space (3). Furthermore, the filter device (1) comprises a filter element which is arranged in the housing interior space (3) and divides the housing interior space (3) into a raw side and a pure side. Moreover, the filter device (1) comprises a flow guiding device (8) which has flow guiding elements (9), is arranged in the housing interior space (3), and is fastened or can be fastened releasably to an inner side (10) of the filter housing (2).
Abstract:
The present invention relates to an air filter (1) for a fresh air system of an internal combustion engine, comprising a filter housing (2), a filter element (15) which has an annular filter body (17), a first end plate (18) and a second end plate (19), and an inner frame (16) which has an annular grid body (24) which is arranged within the filter body (15) coaxially with respect to the filter body (15). An inexpensive construction for the filter element results if the inner frame (16) is a separate component with regard to the filter element (15) and the filter housing (2),if the inner frame (16) is arranged in the filter housing (2) such that it can be rotated about the longitudinal center axis (11) of the filter housing (2), and if a first torque coupling (29) for transmitting torques between the filter element (15) and the inner frame (16) is configured between the inner frame (16) and the filter element (15).
Abstract:
The present invention relates to an air filter (1) for a fresh air system of an internal combustion engine, comprising a filter housing (2) which has a housing pot (3) and a housing lid (4), and a filter element (10) which has an annular filter body (11), a first end plate (13) and a second end plate (14), a dust collector chamber (19) being configured in the filter housing (2), which dust collector chamber (19) is delimited axially on one side directly by the housing cover (4). Simplified production can be achieved if the dust collector chamber (19) is delimited axially on the other side directly by the first end plate (13).
Abstract:
The present invention pertains to the automotive sector and to mechanical engineering, and relates to a filtering element, a supporting structure for a filtering element and to an air filter system for an internal combustion engine, which improve the mounting and replacement of air filters and furthermore reduce the wastage of raw material involved in low-wear parts through the use of air filters. The air filter system comprises: an external structure (20); an internal structure (40) associated in a cooperating manner with the external structure (20) and provided with openings (46) capable of allowing the passage of a fluid to be filtered; and a principal filtering element (50) arranged between the external structure (20) and the internal structure (40), being an assembly formed by the internal structure (40), the external structure (20) and the principal filtering element (50) associated by means of engagement of mounting guides (45, 55, 65) for conferring synchronism on the relative angular movement between said assembly and the external structure (20).
Abstract:
A piston ring is described comprising at least a metal base (1), a sliding face (10), a superior face (20) and an inferior face (30), the interceptions between the sliding face (10) and the superior and inferior faces (20, 30) defining, each thereof, a region of superior intersection (21) and a region of inferior intersection (22), the region of superior intersection defining a sliding chamfer (210), the inferior face (30) in the region extending from the region of inferior intersection (22) by up to a length of 100 to 300 micrometres defining a partial region (23), the perimetric region of the piston ring (100) being nitrided, the sliding chamfer (210), the sliding face (10), the region of inferior intersection (22) and the partial region (23) being devoid of nitridation such that the fragility is reduced of the ring (100) caused by the nitridation of the said regions wherein the recurrence and propagation of cracks is common, in addition permitting the maintenance of nitrided regions having great wear resistance.
Abstract:
The present invention relates to a piston ring (1) for internal combustion engines provided with a base comprising a sliding external surface (3), an internal surface (4), an upper surface (5), and a lower surface (6), the external surface (3) comprising chamfered edges (7, 8), the external (3), internal (4), upper (5), and lower (6) surfaces and the chamfered edges (7, 8) of the ring (1) comprising a first, nitrided layer (10), the first layer (10) comprising a thickness of between 30 and 70 microns on the upper (5) and lower (6) surfaces and a thickness of up to 7microns on the external surface (3) and on the chamfered edges (7, 8), the external surface (3) and the chamfered edges (7, 8) comprising a sliding layer (11) composed of a hard chromium or ceramic chromium plated coating, the sliding layer (11) being applied on the first layer (10), the sliding layer (11) comprising a thickness of between 80 and 175 microns, guaranteeing a high level of durability of the ring (1) owing to the excellent wear-resistance.
Abstract:
The present invention relates to a sliding combination for use in an internal combustion engine, comprising at least one cylinder liner (2) of cylindrical shape defining an internal sliding surface (3) and a ring (4) defined by at least one external lateral sliding surface (5), the external sliding surface (5) of the ring (4) sliding in relation to the internal surface (3) of the liner (2), the surface (5) of the ring having a first coating (6) of metal nitride applied by the physical vapour deposition (PVD) process which slides over a second coating (7) of DLC (diamond-like carbon) applied over the internal surface (3) of the liner (2).
Abstract:
A presente invenção refere-se a um anel (10) de pistão para aplicação como anel de compressão em motores a diesel dotados de potência superior de pelo menos 190kW. Como particularidade da invenção tem-se uma base (1) metálica à qual é associada uma primeira camada exterior (3) deslizante e uma camada intermediária (2) posicionada entre a base (1) e a camada exterior (3), a base (1) sendo composta por um aço compreendendo 0,51 % a 0,59% de carbono, 1,20% a 1,60% de silício, 0,60% a 0,80% de manganês, 0,60% a 0,80% de cromo, um máximo de 0,030% de fósforo, um máximo de 0,025% de enxofre, um máximo de 0,12% de cobre e o restante de ferro. O anel (10) da presente invenção apresenta elevada robustez necessária para resistência à fratura, mantendo elevada conformabilidade com vista a facilitar a configuração geométrica do anel, mesmo em geometrias complexas, evitando os problemas de produção dos anéis de ferro fundido e mantendo ainda assim um custo competitivo.