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A new cost competitive single point metering fuel system which will allow most Phase 2 Small Off Road Engines (SORE) meet EPA Phase 3 legislation without engine improvements or the use of a Catalyst
Main benefits of the TCT fuel system are:
  • Up to 30-40% engine out emissions (HC+NOx) reductions
  • Cost competitive
  • Up to 25% fuel usage reduction
  • Eliminates or reduces the amount of after treatment required
  • Compatible with 3 way catlytic after treatment with lambda 1 operation at all part load mode points
  • AFR control. Easy to calibrate - will allow SORE run lean at lighter loads and rich at high loads
  • Stable combustion at lambda 1 operation (able to run out to 20 to 1 AFR before any misfires occur)
  • Single point metering
  • Easy to apply electronic control / feed back control due to single point metering
  • Will operate on fuels like Gasoline, Kerosene (JP8), Alcohol, LPG and NPG

Fj÷lblendir and Tillotson Joint Venture.
Fj÷lblendir and Tillotson have established a JV company for manufacturing, sales and marketing of TCT for SORE engines (Phase I and Phase II) and two stroke engines. Manufacturing of TCT for SORE <225cc is scheduled to begin by November 2014. Prototypes for SORE >225cc and Two Stroke Engines have been built and are being tested - manufacturing is scheduled to begin by mid year 2015

SAE J1088 A cycle results on various Class 1 engines typically
show 30-40% reduction in HC+NOx

TCT Fuel System Techology in Co-Operation with 


Orbital have worked with Fj÷lblendir on the development of the demonstration TCT and genset.

Independent testing by Orbital shows that an optimised TCT has the capability to typically deliver HC+NOx emission results of over -30% as measured on the J1088 test cycle, whilst retaining good operating characteristics. The specific engine family emission improvement capability is linked to the performance of the base engine.

The emission improvement offers the OEM potential to meet Phase III (or other) emission requirements without the use of a catalyst of aftertreatment.