75 and 85 bhp 1.3 16v Multijet
The 1.3 16v Multijet, the smallest, most advanced of the second-generation Common Rail direct injection diesels. And now we welcome a new 85 bhp version with a variable geometry turbocharger. With the turbocharger, the 1.3 16v Multijet delivers no less than 85 bhp (62 kW at 4000 rpm) of maximum power and a torque of 200 Nm (20.4 kgm at 1750 rpm) to ensure outstanding performance and one of the best fuel consumption figures in the category.
The 1.3 Multijet also ensures excellent performance and fuel consumption with a power output of 75 bhp (55 kW at 4000 rpm) and a torque of 19.4 kgm (190 Nm at 1750 rpm). Apart from its different turbocharging system (the 75 bhp 1.3 Multijet is turbocharged by a fixed geometry turbocharger), the new power unit features further changes. The combustion system has been changed to increase the permeability of the intake and exhaust ducts, reducing combustion chamber swirl and altering the geometry and compression ratio from 18:1 to 17.6:1. The emission control system includes an electrically operated EGR valve managed directly by the
engine control system, an exchanger to cool recirculated exhaust gases and a close coupled catalytic converter. All these devices are to ensure Euro 4 emission limits are met.
So much for the differences between the 75 and 85 bhp versions. The structure of the power unit is common to both. The unit is a 1248 cc 4 cylinder in line power unit with a bore of just 69.6 mm and a 'long' 82 mm stroke. The four valves per cylinder are driven directly by a twin overhead camshaft via finger rockers with a roller. And more. The 1.3 Multijet 16v is a true masterpiece of miniaturised technology: when clad with all its accessories it weighs just 130 kg. Its size is small (it is less than 50 centimetres in length and 65 cm high) and its component layout has been designed to take up as little room as possible.
The power unit is designed in accordance with criteria of maximum rationalism, efficiency and reliability. It offers outstanding performance and practically comes with a lifetime guarantee. It was made to last 250,000 km without any maintenance to its mechanical parts. The oil change intervals have been set at 30,000 km (the 1.3 Multijet 16v uses low viscosity oil. It is therefore thrifty with fuel and also respectful of
the environment).
This compact and technologically sophisticated new power unit is also environmentally friendly because it meets Euro 4 emission limits. The version with variable geometry turbocharger also features a DPF (Diesel Particulate Filter) for the exhaust gases. This mechanical filter is installed in the exhaust system and physically traps the carbon particles present in the Diesel engine exhaust gas. During normal service, the engine control unit records a set of data (service period, route type, temperature reached) and calculates the amount of particulate that has built up in the filter. Because the trap is an accumulation system, it must be regenerated regularly (cleaned) by burning the carbon particles. The engine control unit manages the regeneration process automatically according to the amount of carbon that has accumulated in the filter and vehicle service conditions: all this without the need for additives and without requiring any particular maintenance operations.
The 1.3 Multijet 16v (75 or 85 bhp) therefore represents a true technological leap that translates into a reduction in fuel consumption and emissions for the customer. Not to mention the lower noise levels (due to the multipoint injections); improved comfort (fewer alternating masses for less vibration); smooth, satisfying drive (due to outstandingly gradual torque delivery guaranteed in turn by more effective control of combustion); the flexibility and prompt responses of a diesel that is more and more like a petrol engine due to its broader rpm range (e.g. the fuel cut-off can no longer be felt over 4000 rpm) - and green attributes that allow the main benefits of diesel technology (fuel economy) to be improved as far as the environment is concerned by minimising the main defect (particulate emissions).
105 bhp and 120 bhp 1.9 Multijet
Both with 4 cylinders in line - two valves per cylinder - with bore of 82 millimetres and stroke of 90.4 mm, the former delivers a power output of 105 bhp (77kW) at 4000 rpm and a torque of 200 Nm (20.4 kgm) at 1750 rpm - the latter 120 bhp (88 kW) at 4000 rpm and 200 Nm (20.4 kgm) at 1750 rpm. Both power units have undergone several engineering changes to increase performance and engine torque at low speeds and to reduce noise levels and vibration. The 120 bhp 1.9 Multijet unit is turbocharged via an electronically-controlled Garrett turbocharger with variable geometry turbine that helps improve power delivery by allowing very high torque delivery even at low rpms. Suffice it to say that 90% of maximum torque is available between 1750 and 3250 rpm. These data translate into great driving satisfaction and hot performance. Like the 1.3 Multijet, both 1.9 Multijet engines also meet Euro 4 regulations, due to the EGR emission control system described above. The 120 bhp power unit also offers a particulate trap.