摘要:
The present disclosure is directed to injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels. These integrated injectors/igniters can include, for example, insulators with adequate mechanical and dielectric strength to enable high-energy plasma generation by components that have very small dimensions, multifunction valving that is moved to injector multiple bursts of fuel and to induce plasma projection, a fuel control valve at the interface to the combustion chamber for the purpose of eliminating fuel drip at undesired times, and one or more components at the interface of the combustion chamber for the purpose of blocking transmission of combustion sourced pressure.
摘要:
The present disclosure is directed to injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels. These integrated injectors/igniters can include, for example, insulators with adequate mechanical and dielectric strength to enable high-energy plasma generation by components that have very small dimensions, multifunction valving that is moved to injector multiple bursts of fuel and to induce plasma projection, a fuel control valve at the interface to the combustion chamber for the purpose of eliminating fuel drip at undesired times, and one or more components at the interface of the combustion chamber for the purpose of blocking transmission of combustion sourced pressure.
摘要:
With reference to FIG. 1, the present invention provides a fuel injector (19) comprising a reed valve (35). The reed valve has at least one orifice and at least one reed valve blade, the or each reed valve blade having a valve head attached to at least one resilient spring arm. The or each valve head opens and closes a respective orifice in the valve seat. A support surrounds the reed valve blade(s). Each spring arm extending inwardly from the support. Each spring arm is curved.
摘要:
A fuel injector provided with an injection valve comprising a mobile plunger; an injection jet having a plurality of first through-holes made starting from a chamber arranged downstream from the injection valve; a supporting body having a tubular shape and comprising a supply channel; and a sealing body, in which a valve seat of the injection valve is defined and the injection jet is provided; the sealing body is monolithic and has a disc-shaped plug member passed through by the injection jet, and a guide member, which rises up from the plug member, is tubular in shape, receives within it the plunger and has an external diameter smaller than the internal diameter of the supply channel, so as to define an external annular channel for the fuel; in the lower part of the guide member there are provided a number of second through-holes which open into the valve seat.
摘要:
Disclosed is a fuel injection valve including a valve body and a bore, embodied as a blind bore, whose bottom face is oriented toward the combustion chamber, and a conical valve seat having at least one injection port is disposed, is embodied on the bottom face. In the bore, a pistonlike valve member, which is longitudinally displaceable counter to a closing force, is disposed and has a valve member tip, which in the closing position of the valve member comes to rest on the valve seat. A first conical face and a second conical face, disposed toward the combustion chamber toward the first conical face, are embodied on the valve member tip, and the cone angle of the first conical face is smaller than the cone angle of the valve seat, which in turn is smaller than the cone angle of the second conical face. One annular groove is embodied between the first conical face and the second conical face, and an additional encompassing annular groove is disposed on the second conical face and at least partly coincides with the injection ports in the closing position of the valve member, so as to supply all the injection ports uniformly with fuel even if the valve member is off its axis.
摘要:
An injection needle comprising a needle tip, elastically connected to a needle shaft by means of a connector piece. A damping of the force with which the needle tip hits the corresponding sealing seat is possible by means of the elastic connection. The load on the sealing seat is thus reduced.
摘要:
A fuel injector, in particular an injector for fuel injection devices in internal combustion engines has a valve needle (5) with a valve-closure member (6) which cooperates with a valve seat surface (8) in a valve seat body (22) to form a sealing seat (9), in which the valve seat body (22) has a plurality of injection orifices (4, 15, 18) that are isolated from the fuel supply by sealing seat (9). The valve-closure member (6) has a pressure element (11) in a recess (10) facing the valve seat body (22), which is pre-tensioned against the valve seat body (22) by a spring (12) which is supported on the valve-closure member (6) and presses a disc spring (13) against the valve seat body (22), in such manner that the disc spring (13) covers at least one of the injection orifices (15), and the spring element (13) uncovers this injection orifice (15) when the tension exerted by the pressure element (11) is removed.
摘要:
A dual-substance nozzle (3) for injecting fuel and supplementary fluid into a combustion chamber of an internal combustion engine, having a nozzle body (3.0) with at least one inlet bore (3.2) for delivery of fuel at high pressure into the dual-substance nozzle (3), and nozzle bores (3.8) for injecting fuel from the dual-substance nozzle into the combustion chamber. A jacket (7), preferably metal, is disposed around the nozzle body (3.0) enclosing at least one hollow chamber (8), adjoining the outside of the nozzle body (3.0) and extending around the nozzle body (3.0) for receiving supplementary fluid. A feed line (5) for delivering supplementary fluid at high pressure into the hollow chamber and one or more injection nozzles for injecting supplementary fluid from the hollow chamber into the combustion chamber are provided. The injection of fuel and supplementary fluid are separate, insuring no mixing thereof upstream of the combustion chamber.
摘要:
A fluid discharge nozzle which includes a main body having a fluid inlet passage connected with an annular groove or recess in the end face and located closely adjacent to the peripheral edge thereof, and a cap member substantially coextensive with and overlying the grooved or recessed end of the nozzle body, the cap being secured to the body in a manner to compress its peripheral portion against the outer peripheral edge of the groove or recess in the body with a pressure which will normally close the groove or recess to escape of fluid, with the cap member being slightly flexible such that when fluid pressure reaches a predetermined value, it will open peripherally and produce a substantially fanshaped spray of fluid between the outer edge of the groove or recess and the outer edge of the cap member.