Large-bore engines running on lean gaseous fuel mixtures often experience a slower burn rate of the fuel and incomplete combustion. These conditions reduce combustion efficiency and contribute to problematic exhaust emissions. Typical J-gap spark plugs try to address these performance issues by increasing the spark energy, which shortens plug life. To counter decreasing spark plug life, J-gap manufacturers often increase electrode area, which has a "quenching" effect on the ignition spark, increasing combustion variability; or they use precious metals, which increase manufacturing complexity and reduce plug durability.
The FTI's unique and patented design enables consistent ignition without the need for a high-energy ignition system, reducing the need for precious metal electrodes to achieve long life. It is also customizable to meet specific engine combustion requirements.
- Fast, stable fuel combustion
- Improves engine efficiency
- Reduces exhaust emissions
- No thermal run-away for good knock margin
- Longer life
- Customizable design
What is delivers: Improved Engine Efficiency Consistent ignition of fuel charge - more complete fuel burning Faster combustion - occurs just at Top Dead Center (ATDC) for better combustion efficiency Improved Combustion Stability
J-Gap vs FIT:
- The FTI's patented pre-chamber combustion technology improves combustion initiation beyond J-gap and conventional pre-chamber spark plugs.
- JGap1Typical J-gap spark plugs' spherical flame front has slower combustion speeds as the flame front moves across the combustion chamber. This type of flame front is susceptible to high in-chamber turbulence, which can quench or even blow-out the spark, again increasing the variability of the ignition. Also, smaller spark surface erodes faster, shortening the life of the spark plug.
- The FTI addresses these issues by using separate flame kernel ignition. The multi-jet flame front coming out of the FTI igniters generates its own in-chamber turbulence. This self-generating turbulence adds to the existing in-chamber turbulence while being highly tolerant to other in-chamber turbulence promoting rapid flame growth throughout the fuel mixture.
- Extremely lean operating conditions
- Better combustion efficiency and NOx - enabling optimized ignition timing
- Reduced Emissions
- Reduces NOx - enables running at increased lambda (λ) (air-fuel ratios)
- Reduces misfire - unburned hydrocarbons
- Longer Life
- Exceeds engine's service interval - reducing engine downtime
- Multiple offerings - different levels of expected life
- Zero Failure Rate
Reliable and robust - designed for high cylinder pressure