Features and Functions

Large bore engines using dilute gas fuel mixtures typically experience slower fuel burn rates and incomplete combustion.

These conditions reduce combustion efficiency and result in problematic exhaust emissions.

Typical J-gap spark plugs attempt to address these performance issues by increasing spark energy, which can shorten spark plug life.

To counteract the shortened spark plug life, J-gap manufacturers often increase the electrode area, which can have a detrimental effect on the ignition spark.

This has a “quenching” effect on the ignition spark, which increases combustion variability;

Or they use precious metals, which increase manufacturing complexity and reduce plug durability.

FTI’s unique, patented design provides consistent ignition without the need for a high-energy ignition system, reducing the need for precious metal electrodes for long life.

It can also be customised to meet specific engine combustion requirements.

FTI Advantages.

Fast, consistent fuel combustion

Improved engine efficiency

Reduced exhaust emissions

No hot running and good detonation margins

Longer life

Customisable design

Objectives achieved: Improved engine efficiencyContinuous fuel ignition – More complete fuel combustionFaster combustion – Just in Time Departure Point (ATDC) for improved combustion efficiencyImproved combustion stability

j-gap with FIT.

FTI’s patented pre-combustion chamber combustion dcs-sis.com technology improves combustion start-up with J-gap and conventional pre-combustion chamber spark plugs.

J-gap1 Typical J-gap spark plugs have a spherical flame front that burns slowly as it passes through the combustion chamber. This type of flame front is susceptible to high turbulence in the combustion chamber, which can quench or even blow out the spark, again increasing ignition variability. In addition, smaller spark surfaces corrode more quickly, shortening the life of the spark plug.

FTI addresses these issues by using a separate flame core for ignition. The multi-jet flame front from the FTI igniter creates its own combustion chamber turbulence. This self-generated turbulence adds to existing chamber turbulence while being highly resistant to other chamber turbulence that promotes rapid flame growth throughout the fuel mixture.