internalinternal1internal2internal31MultiJet technology is a fuel system for diesel engines. (The Alfa Romeo 156 was the first car to which this system was applied). The system is able to achieve a high number of injections during each engine stroke. The quantity of diesel is burned in a more gradual manner inside the cylinder. Second generation MultiJet engines -JTDM-2 are available on both Alfa Giulietta and Alfa MiTo


Benefits
The advantages of the MultiJet system are:

  • More silent running
  • Reduced emissions
  • Performance increase of approximately 6-7%


Technical explanation
The secret of MultiJet lies in the control unit that controls the electrical injector opening and closing control (and also in the injectors themselves). The key element in this system is the electronic control unit which can carry out a series of injections even very close together.
The component (together with the injectors) makes it possible to implement multiple injections that guarantee the designer more precise control of pressures and temperatures developed in the combustion chamber in addition to more effective exploitation of the air introduced into the cylinders. This makes it possible to achieve additional goals: in the control of combustion noise, in emission reduction and in increased performance.

JTDM-2 engines are helping optimise efficiency with new versions. The Giulietta now comes the 1.6 JTDM-2 engine with 105 bhp on which maximum torque rises to 320 Nm delivered at 1750 rpm in dynamic mode.
And the Alfa MiTo now comes with the 1.3 JTDM-2 85 bhp engine which not only delivers 78.5 mpg on a combined cycle, but with only 95 g/km CO2 means that you don’t need to pay road tax or congestion charge.

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