System and method for eliminating pocket sparking in an internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 19, 2002
Grant Date -
N/A
app pub date -
Mar 31, 2000
filing date -
Mar 31, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel injected, internal combustion engine that is protected from detrimental ignition due to pocket sparking. The engine includes one or more cylinders into which fuel is injected by an injector. A spark plug is used to ignite the fuel-air mixture within the cylinder. The spark plug is designed with a base and a shell extending from the base to define a hollow interior. A central electrode is disposed in an insulative core and extends through the hollow interior of the shell. The shell is connected to a secondary electrode. A gap is formed between the electrodes for promulgation of a spark to ignite the fuel-air mixture. The detrimental effects of pocket sparking are eliminated by placing a closure member between a terminal end of the shell and the nose of the insulative core. This closure member may be in the form of a lip that extends from the shell into proximity with the nose of the insulative core.
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