Ignition control system and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
May 8, 2003
app pub date -
Nov 7, 2001
filing date -
Nov 7, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention is directed to an ignition control system that dynamically adjusts the warm-up time of an igniter within a predetermined range depending on the success or failure of the previous ignition or start-up cycle. The system activates the igniter and waits a predetermined or computed warm-up time. At the end of the warm-up time, the system opens a gas valve. The system then waits a preset time from the opening of the gas valve to determine whether ignition was successful or not. If the ignition was successful, the system computes a new igniter warm-up time by decrementing the current time and stores this new value for use during the next start sequence. If the ignition was unsuccessful, the system computes a new warm-up time by incrementing the current value and retrying the start sequence. Preferably, a successful ignition is always determined by checking for the presence of flame a fixed time following the opening of the gas valve.
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