摘要:
The invention relates to a gas discharge tube (30) of a type that may be used for example in gas turbine engine (10) ignition systems. The gas discharge tube (30) has an envelope (42) containing a gas therein and the envelope has a pair of spaced electrodes (38, 40) for application of an electric potential difference across the gas. An electromagnetic radiation source (44), such as a deep UV light source, is arranged to emit photons (50) into the envelope (42) so as to initiate ionisation of the gas, thereby reducing the potential difference required to cause electrical conductance between the electrodes. The electromagnetic radiation source, which may comprise light emitting diodes, may be selectively controlled.
摘要:
A partitioned exciter system for use with an igniter in an aircraft engine. The exciter has low-energy charging circuit and a high-energy discharge circuit that are remotely located from each other and that are connected by a low-energy coaxial cable. The charging circuit can be located within the aircraft fuselage and the discharge circuit mounted at the engine. The discharge circuit contains passive components that do not need special environmental protection, and the remotely located charging circuit can utilize existing electrical circuitry protection measures already in place in the fuselage to protect against lightning and other potentially-damaging environmental factors. Also disclosed is a housing arrangement for the discharge circuit that allows it to be directly attached to the igniter.
摘要:
The invention relates to a system for igniting a fuel-air mixture in a combustion chamber with a corona discharge. The system comprises an electrode inside of the combustion chamber, an electric circuit which provides radio frequency electric power to the electrode, and a ground formed by the combustion chamber walls. A radio frequency voltage differential formed between the electrode and the ground produces a radio frequency electric field therebetween which causes a fuel-air mixture to ionize resulting in combustion of the fuel-air mixture. The system can be utilized in engines such as internal combustion engines or gas turbine engines, for example.
摘要:
La présente invention porte sur un dispositif de montage d'une bougie d'allumage (13) dans une chambre de combustion (1) de moteur à turbine à gaz comprise dans un carter(3), dans lequel la chambre de combustion a un axe YY, le dispositif de montage comprenant une cheminée (14) d'axe XX, une douille de bougie flottante 120 permettant une reprise de la dilatation selon un axe perpendiculaire à l'axe XX de la cheminée (14). Le dispositif est caractérisé par le fait qu'il comporte, en outre, une douille de cheminée (130), tel que la douille de bougie (120) est logée dans la douille de cheminée (130), et des moyens d'inclinaison de la douille de cheminée (130) par rapport à l'axe XX. L'inclinaison de la douille de cheminée (130) permet une inclinaison de la chambre par rapport à l'axe XX.
摘要:
The invention relates to a system for igniting a fuel-air mixture in a combustion chamber with a corona discharge. The system comprises an electrode inside of the combustion chamber, an electric circuit which provides radio frequency electric power to the electrode, and a ground formed by the combustion chamber walls. A radio frequency voltage differential formed between the electrode and the ground produces a radio frequency electric field therebetween which causes a fuel-air mixture to ionize resulting in combustion of the fuel-air mixture. The system can be utilized in engines such as internal combustion engines or gas turbine engines, for example.
摘要:
A lead arrangement (1), in particular a high voltage lead arrangement, for being installed in a combustor unit to connect an ignition system of the combustor unit to an external power source and to deliver an ignition voltage to the ignition system, comprises: a tube (3) having a tube wall (4) and an lumen surrounded by the tube wall, at least one lead (5) extending through the lumen of the tube, and a mineral isolator material (7) disposed between the lead (5) and the tube wall (4).
摘要:
A system for detecting spark in an igniter for a gas turbine engine. An igniter generates a plasma or spark, somewhat similar to an automotive spark plug. In the invention, an inductive pick-up is positioned adjacent the igniter, to detect current pulses in the igniter to thereby infer the presence of spark. The pick-up can take the form of a coil embedded in a mounting bracket which is used to fasten the igniter to the engine.
摘要:
A system is provided for detecting a spark in an igniter for a gas turbine engine. An igniter generates a plasma, or spark, somewhat similar to an automotive spark plug. In the invention, an inductive pick-up is positioned adjacent the igniter, to detect current pulses in the igniter, to thereby infer the presence of spark. The signal produced is small, and requires amplification. However, the environment is hot, often exceeding 400 degrees F. The invention utilizes an amplifier composed of passive components, in the form of an RLC circuit.
摘要:
A system for detecting spark in an igniter for a gas turbine engine. An igniter generates a plasma or spark, somewhat similar to an automotive spark plug. In the invention, an inductive pick-up is positioned adjacent the igniter, to detect current pulses in the igniter to thereby infer the presence of spark. The pick-up can take the form of a coil embedded in a mounting bracket which is used to fasten the igniter to the engine.