3 bar TRIOL M 500HP

Not expensive universal dual-fuel kit TRIOL M for heavy-duty is designated for 500hp max diesel engines working in dual-fuel (diesel and CNG) regime.

Identifying feature of this kit is using 3barinjectors working pressure. Necessary gas flow is supplied by 2 reducer connected in parallel and rail with 8 injectors.

Conversion kit TRIOL is based at proven and reliable accelerator pedal sensor (PPS) emulation principle. (how does it work?) )

TRIOL M for heavy-duty conversion kit provides diesel fuel substitution coefficient is 60-70%, i.e. your vehicle consumes 30-40% of initial diesel-only fuel consumption (tests results are here), 1 liter of diesel fuel is substituted of 1,1-1,2nm3 of CNG.

TRIOL conversion kit family comparison chart you can find here:.


Basic features:
  • Working voltage 12V, can work at 24V.
  • Injectors working pressure is 3bar, this allows decrease residual pressure up to zero almost
  • ECU single unit, no need to use separate controllers of power electronics
  • Can be used at any vehicles with electronic accelerator pedal sensor
  • Equipment lifetime 20years

According to our company core principle “Safety at first”, our dual-fuel TRIOL control unit has well-developed safety system

In case of one of important parameters exceed its limits, TRIOL control unit automatically cut CNG supply and switch engine back to diesel-only regime, disregarding moving or standing vehicle.

Parameters monitored by TRIOL safety system.
  • Pressure regulator temperature
  • CNG pressure low side (after pressure regulator)
  • CNG pressure high side (before pressure regulator = cylinder pressure)
  • Exhaust gases temperature
  • Injectors harness short-circuit and break
  • PPS sensor reading
  • RPM and speed sensor reading
  • Watchdog timer



TRIOL M for heavy-duty 12V 3 bar conversion kit components:
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Option 1. 2 rails with 4 injectors VALTEK type 30 each and working pressure 3bar. You can find info about VALTEK company and injectors parameters here.


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Option 2. 1 rail with 8 injectors VALTEK type 30 each, working pressure 3bar and single gas outlet connector. This option provides easier installation and higher reliability. You can find info about VALTEK company and injectors parameters here.


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2 high-performance reducers TOMASETTO AT12 SUPER with digital high pressure sensor and high pressure cut-off valve 12V. You can find info about ТОMASETTO ACHILE company and reducer parameters here. .


ECU and injectors controller in one unit. Aluminium box design for high heat dissipation. Working temperature -40…+85. Protection class IP69.



Pressure regulator low side pressure sensor.


Exhaust gas temperature (EGT) sensor.


Diesel-only/dual-fuel regimes switch combined with CNG storage indicator


Wire harness for heavy-duty vehicles and buses special design.

Additional equipment (additional charge)


High-end hose with thread-joints fittings for pressure regulator and injectors rail connection, pressure up to 20 bar. Used instead of conventional 3-5bar hose with clamps.

High-pressure diam 6 steel tube, nuts&ferrules, T-connectors, pressure gauges and other high-pressure accessories.


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