34 results about "Main injector" patented technology

An injector of a two-headed combustion chamber of a turbomachine has a first feed tube which is connected to an annular injection piece for discharging primary fuel into the combustion chamber. It also has a second feed tube surrounding the first feed tube and connected to a cylindrical endpiece for discharging secondary fuel into said combustion chamber. This endpiece has an annular channel of diameter that is greater than the diameter of the second feed tube and that extends over its entire length. A third tube is provided that surrounds the second tube and that is connected to a tubular separation element which is inserted in the annular channel of the cylindrical endpiece so as to form two annular spaces in which a cooling fluid can flow over 360° all the way to the end of the injector.

The invention relates to a device for ventilating a high pressure turbine rotor which comprises a turbine disk and an upstream end plate. A first circuit for cooling blades delivers a first air flow via main injectors and holes formed in the end plate. A second cooling circuit delivers a second air flow through a discharge baffle situated downstream from the compressor, a fraction of this second flow serving to cool the upstream top face of the end plate through a second baffle situated beneath the main injectors. A branch connection is provided between the first circuit and the enclosure situated downstream from the second baffle and it delivers a third flow which is set into pre-rotation by additional injector means formed in the form of inclined bores.

A fuel injector includes: a pilot injector configured to spray fuel so as to form a first combustion region in a combustion chamber; and a main injector provided coaxially with the pilot injector so as to surround the pilot injector and configured to supply a fuel-air mixture that is a mixture of the fuel and air to form a second combustion region in the combustion chamber, wherein the pilot injector includes: a center nozzle configured to eject air jet flowing straight in an axial direction on a central axis of the pilot injector; an inside swirler provided on a radially outer side of the center nozzle and configured to cause inflow air to swirl around the central axis; and a pilot fuel injecting portion configured to inject the fuel from between the center nozzle and the inside swirler to air flow in the center nozzle.

A steam jet refrigeration cycle system comprises a producer, an evaporator, a condenser, a circulation pump, a throttle valve and main and secondary injectors. The producer is used for producing the high-pressure refrigerant working steam. The main injector is used for jetting the low-pressure refrigerant steam coming from the evaporator and the secondary injector is used for jetting the low-pressure refrigerant steam coming from the main injector. The circulating pump outputs the high-pressure refrigerant liquid. The refrigerant liquid coming from one outlet of a diffuser returns to the producer and the refrigerant gas-liquid mixture coming from the other outlet enters to the condenser to condense. The produced refrigerant liquid is divided into two ways, one way is sent to the secondary injector by the circulating pump and the other enters to the evaporator through the throttle valve. The refrigeration is realized by evaporative heat-absorbing of the refrigerant in the evaporator.

The electrolytic ignitor comprises an injector constituting a first electrode and including a fuel injector device, an oxidizer injector device, and an electrolyte injector device. A second electrode electrically insulated from the injector extends downstream beyond the injector. An electrolyte distribution channel for delivering electrolyte in the form of free jets through the electrolyte injector device comprises at least one injection hole in the vicinity of the fuel injector device and the oxidizer injector device. An electrical power supply circuit is adapted to raise the second electrode to a potential in the range 50 V to 1000 V relative to the potential of the first electrode. The electrolyte injected through the injection hole is capable of causing ignition of a gaseous mixture in a combustion chamber of an ignitor torch suitable for incorporating in a main injector of a rocket engine.

Turbo machine combustion assembly (1) comprising a combustion chamber (10), at least one starting injector (17), a plurality of main injectors (18) distributed at constant angular intervals around the circumference of the combustion chamber, each starting injector being positioned between two consecutive main injectors, equal distances therefrom, and a fuel supply circuit (40) supplying fuel to the injectors, in which assembly the combustion chamber is delimited by two axisymmetric walls - an external wall (14) and an internal wall (12) - which are connected by an annular chamber end wall (16), the fuel supply circuit being designed to supply at least one starting injector continuously, each continuously-supplied starting injector being oriented toward the chamber end wall and dimensioned to spread a spray (F) of fuel between 120° and 180° wide, and the flow rate of fuel injected by the main injectors (18') between which the starting injectors are positioned being reduced by comparison with the flow rate injected by the other main injectors (18).

A fuel system (10) for a turbine engine (12) for improving efficiency in a fuel system (10) where a major stage (14) and secondary stage (16) can be combined and held to a relatively constant fuel ratio while maintaining acceptable engine dynamics and NOx emissions is disclosed. The fuel system (10) may be formed from a first premix injector assembly stage (18) positioned upstream from a combustor basket (20), whereby the first premix injector assembly stage (18) is a secondary injector system. The fuel system (10) may be formed from a first primary injector assembly stage (22), which is a main injector system, positioned downstream from the first premix injector assembly stage (18). The first premix injector assembly stage (18) and the first primary injector assembly stage (22) may be coupled together such that the fuel system (10) is capable of emitting fuel into a combustor (24) of the turbine engine (12) via the first premix injector assembly stage (18) and the first primary injector assembly stage (22) simultaneously.

The electrolytic ignitor comprises an injector constituting a first electrode, a second electrode that is electrically insulated from the injector and that extends downstream beyond the injector, and a distribution channel to deliver a first mono-propellant to a first mono-propellant injector device constituted by at least one injection hole opening out in the vicinity of the second electrode, and an electrical power supply circuit adapted to raise the second electrode to a potential lying in the range 50 V to 1000 V relative to the potential of the first electrode. The electrical power dissipated by ionic conduction in the free jet of the first mono-propellant is suitable for giving rise to spontaneous decomposition of the first mono-propellant and for producing combustion gas that ensures ignition of jets of a second mono-propellant coming from a main injector situated in the vicinity of the second electrode.

A fuel injector with a built-in positive temperature coefficient ceramic heating material mainly includes: a fuel injector needle valve, a fuel injector needle valve body, a fuel injector body, a fuel injector tappet, a fuel injector pressure regulating spring, a fuel injector Heat conduction round tube in the body, positive temperature coefficient heating ceramics in the fuel injector body, insulating sheath in the fuel injector body, heat conduction round tube in the oil inlet bolt, positive temperature coefficient heating ceramics in the oil inlet bolt, insulating sheath in the oil inlet bolt, etc. The positive temperature coefficient heating ceramics are placed in the oil inlet bolt and the fuel injector, and the self-limiting temperature of the diesel is heated through the heat conduction tube, and insulated through the insulating sheath. The invention provides a self-limiting temperature heating fuel injector for diesel oil in the process of cold start and warm-up, the heating temperature will not exceed the boiling point of diesel oil, the required heating amount is less, and the heating speed is faster, which can effectively Improve diesel engine emissions and improve its cold start performance.

A fuel supply system of a vehicle, may include a fuel tank storing ethanol therein, a main injector installed at an engine to inject the ethanol from the fuel tank, a heater provided to heat the ethanol supplied from the fuel tank to the engine, a cold-starting injector installed at the engine to inject the ethanol heated by the heater, and a valve unit connected to the main injector and the cold-starting injector and performing a switching operation between a state of the ethanol being supplied from the fuel tank to the main injector and a state of the ethanol heated by the heater being supplied to the cold-starting injector.

The invention provides a heat energy recycling injection type air conditioner which comprises a main injector, a condenser and a pre-cooling evaporator. The main injector is connected with the condenser, the condenser is provided with an outer pipeline and an inner pipeline arranged in the outer pipeline, and a first throttling valve is arranged in the pre-cooling evaporator. When the air conditioner refrigerates, refrigerants from the main injector can be cooled into a liquid state by the outer pipeline of the condenser, the liquid state refrigerants are conveyed to the pre-cooling evaporator and can be converted into refrigerant steam by the first throttling valve in the pre-cooling evaporator, and the refrigerant steam is conveyed into the inner pipeline of the condenser to absorb heat. The heat energy recycling injection type air conditioner can solve the problems that the heat energy of an existing injection type air conditioner cannot be recycled and the use rate of the heat energy is low.