Method and apparatus for operating traveling spark igniter at high pressure
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United States of America Patent
Stats
-
Jan 7, 2014
Grant Date -
Dec 22, 2011
app pub date -
Aug 31, 2011
filing date -
Apr 19, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ignition circuit and a method of operating an igniter (preferably a traveling spark igniter) in an internal combustion engine, including a high pressure engine. A high voltage is applied to electrodes of the igniter, sufficient to cause breakdown to occur between the electrodes, resulting in a high current electrical discharge in the igniter, over a surface of an isolator between the electrodes, and formation of a plasma kernel in a fuel-air mixture adjacent said surface. Following breakdown, a sequence of one or more lower voltage and lower current pulses is applied to said electrodes, with a low “simmer” current being sustained through the plasma between pulses, preventing total plasma recombination and allowing the plasma kernel to move toward a free end of the electrodes with each pulse.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2011 Application Filing Year
- F02P Class
- 145 Applications Filed
- 124 Patents Issued To-Date
- 85.52 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 7 Citation Count
- F02P Class
- 5.83 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 7, 2025 |
