摘要:
Diagnostic apparatus (30) for detecting the correct operation of an exciter circuit (10) connected to the igniter of an ignition system by a conductor (20) is disclosed. The current discharged from the exciter circuit (10) through the igniter, and the current discharged from the exciter circuit (10) other than through the igniter, is detected by a discharge current pulse detection device (32). A single output (50) is given, indicating the type of the discharge from the exciter circuit (10).
摘要:
A detector comprises an exciter, an igniter, a conductor (24) that connects the exciter to the igniter to form a discharge circuit, and a current pulse detector for detecting current pulses in the circuit. The detector comprises a wire (30) disposed in close proximity to a current carrying element (32) in the circuit so that a sense current is induced in the wire (30) across a coreless gap. Means (36) are provided for converting the sense current to an output that indicates occurrence of a spark discharge.
摘要:
A temperature sensor (30) for detecting temperature of a heating element (20) of an igniter such as a glow plug includes optic means (32) disposable near the igniter for receiving at least a portion of electromagnetic energy emitted by the heating element (20). The received electromagnetic energy is coupled to circuit means (36) for producing an output related to the temperature of the igniter in relation to a characteristic of the received electromagnetic energy. In one embodiment, the optic means (32) comprises optic fibers that receive electromagnetic energy emitted by the heating element and couple that energy to a photosensitive detector.
摘要:
A rotary transformer for aircraft deicing apparatus has a primary winding (88) adjacent a laminated primary core (52), and a secondary winding (64) adjacent a laminated secondary core (54). At least one of the cores (52,54) is rotatable with respect to the other core.
摘要:
An exciter for an internal combustion engine igniter plug (12) comprises a continuous AC charging circuit (20) and a discharge circuit (22). The discharge circuit (22) is connectable to the plug (12) and the charging circuit (20) includes a transformer (T1) having a primary winding connectable to an AC power source (28) and a secondary winding connected to the discharge circuit. The discharge circuit includes a storage capacitor (38) connected to the transformer secondary winding such that current induced in the secondary charges the capacitor (38) at a generally constant rate. A switching device (46) is connected in series between the capacitor (38) and the plug (12). A trigger circuit (52) triggers the switching device (46) in response to charge on the capacitor (38). The charging circuit (20) and trigger circuit (52) operate to maintain a generally constant spark rate. A current multiplier (76) is also provided to substantially increase the peak currents delivered to the plug (12). A clamping diode (150) is also provided in parallel with the storage capacitor (38) to prevent reverse currents and voltages due to resonance between the capacitor (38) and stray inductance.
摘要:
An exciter for an internal combustion engine igniter plug (12) comprises a continuous AC charging circuit (20) and a discharge circuit (22). The discharge circuit (22) is connectable to the plug (12) and the charging circuit (20) includes a transformer (T1) having a primary winding connectable to an AC power source (28) and a secondary winding connected to the discharge circuit. The discharge circuit includes a storage capacitor (38) connected to the transformer secondary winding such that current induced in the secondary charges the capacitor (38) at a generally constant rate. A switching device (46) is connected in series between the capacitor (38) and the plug (12). A trigger circuit (52) triggers the switching device (46) in response to charge on the capacitor (38). The charging circuit (20) and trigger circuit (52) operate to maintain a generally constant spark rate. A current multiplier (76) is also provided to substantially increase the peak currents delivered to the plug (12). A clamping diode (150) is also provided in parallel with the storage capacitor (38) to prevent reverse currents and voltages due to resonance between the capacitor (38) and stray inductance.
摘要:
Apparatus for igniting fuel in a combustor (10) is disclosed. The combustor has at least one fuel nozzle (16) which emits an atomized fuel spray into a primary zone (20) of the combustion chamber. A laser energy source (44) produces infrared laser energy and an optic fibre cable (46) transmits the laser energy from the laser source into the primary zone (20) of the combustor (10) to ignite the fuel spray via a laser igniter (30). In one embodiment, the laser igniter (30) is disposed in a main fuel nozzle of the combustor.
摘要:
Apparatus for igniting fuel in a combustor (10) includes an injector (30) having an electrostatic fuel atomisation nozzle (50) and an igniter (52). The injector (30) produces an initial combustion process which ignites the main fuel supply from a fuel nozzle (16). Alternatively, a main fuel nozzle is provided which includes a plurality of electrostatic fuel nozzles disposed about a centrally located igniter. The igniter may be a laser igniter.