In line with other manufacturers, Suzuki is continuing to improve the product range by offering a new 1.2 litre petrol unit. The engine will be Dualjet technology and offer better performance and economy. It will be capable of more than 65 miles per gallon and produce less than emissions of 99 g/km meaning road tax will fall into the zero band.
Utilising Dualjet technology that positions the fuel injectors very close to the engine inlet valves allows for a finer fuel atomisation (or mixture) which in turn provides a more effective transfer into the cylinder. Internal modifications to the engine include the use of a new type of inlet port and combustion chamber with other mechanical parts also modified to reduce frictional losses and facilitate smoother running.
The piston crowns have also been modified with a slight bowl shape to achieve higher air turbulence inside the cylinder, and the pistons have cooling oil jets to help reduce internal temperatures. Additionally, a new type of Exhaust Gas Recirculation (EGR) system is used which helps avoid abnormal combustion or ‘knocking’. These modifications have resulted in a higher compression ratio of 12.0:1 versus 11.0:1 for the current engine.
The maximum power output is 90PS versus 94PS for the current petrol engine with a slightly increased torque figure of 120Nm at 4,400rpm versus 118Nm at 4,800rpm. Other modifications include slight alterations to gear ratios for greater flexibility on the road, and the addition of Engine Auto Stop Start (EASS).
The new Dualjet technology for Swift will initially be available as an optional engine choice on SZ4 two wheel drive models and will cost around an additional £500. The savings for this engine over the outgoing variant will typically be around £175 per year so keeping the car for 3 years will see it pay off.