The adoption of sequential HydrogenLPG/CNG injection for petrol engines has various advantages: optimal fuel
dosage achieving mixtures with the correct stoichiometric ratio, excellent fuel consumption, reduced pollutant emissions, improved performance.

 

Petrol engines are controlled by an electronic control unit (ECU) which, according to a number of parameters, determines instant by instant the duration of the fuel injection.
The main types of original injection systems for petrol engines are:

 

• indirect injection systems (Port Fuel Injection – PFI) featuring petrol injectors upstream of the intake valves;

• direct injection systems (Gasoline Direct Injection – GDI/Fuel Stratified Injection – FSI) featuring injectorslocated in the combustion chamber. This provides an increase in performance and a reduction in consumption and emissions.

To convert an injection engine from petrol to Hydrogen it is necessary to use a second electronic control unit alongside the original ECU.

 

Secure Supplies  ECU manages the alternative fuel supply, optimising engine performance and subsequent emissions. Secure Supplies Alternative Fuel Electronics designs and produces electronic control units for Hydrogen conversion that can be used on all the engine types described above.

 

Beside the traditional sequential injection systems for MPI petrol engines, Secure Supplies Alternative Fuel Electronics has designed a new injection system for light-duty Diesel vehicles (12V). The new system is based on the dual-fuel concept which means that engines can use Diesel and Hydrogen at the same time.

These systems do not require modifications to the Diesel engine which keeps its own functional features.

Matching a positive pressure regulator for Hydrogen and an injector rail (up to 4 cylinders) with our dedicated dual-fuel ECU, we can convert OBD or non-OBD Diesel engines equipped with an
electronic or mechanic pump.