Vauxhall is set to release its new turbocharged SIDI (Spark Ignition Direct Injection) with 1.6L in capacity. The 200PS petrol direct injection unit is part of Vauxhall’s model and powertrain offensive including the BiTurbo CDTi with 195PS and whopping 400Nm. Within five years, the manufacturer will introduce 23 new models to the market and will capitalize on this new powertrain.
Compared to its predecessor, the new powertrain delivers 11% more power, and also 300Nm torque with overboost – 70Nm more than the comparable 1.6-litre turbo predecessor, an increase of 30%. At the same time, the new engine with a power output per litre of 125PS is top-in-class in its competitive segment.
At the heart of the SIDI turbo is a new engine block that can withstand a maximum combustion pressure of up to 130 bar in the cylinder. The block is made of grey cast iron with an aluminium baseplate. In contrast to the 170PS version, a different type of piston was developed for the 200PS model and the compression ratio was reduced from 10.5 to 9.5:1. Vauxhall engineers also achieved a high power output with exceptional refinement by optimising the car’s induction and exhaust systems. As a result, drivers and passengers will appreciate quiet and smooth idling, with an appealing sound quality even at high road speeds, engine speeds and loads.
The new turbocharged petrol engine will debut in the Vauxhall Cascada with six-speed manual transmission. This drivetrain combo gives 146mph top speed. The new 1.6 SIDI turbo with 200PS completes the Cascada engine portfolio, with three petrol powertrains. It joins the 1.4 turbo 140PS as well as the 170PS 1.6-litre petrol direct injection unit. On the diesel side, the 2.0-litre turbo diesel with 165PS and the 195PS 2.0 BiTurbo CDTI are available.
Through 2016 Vauxhall will also introduce three completely new engine families and 13 new powertrains, renewing 80 per cent of its entire powertrain portfolio. The new 1.6 SIDI turbo downsized engines are distinguished by high power density as well as superb refinement combined with low fuel consumption and CO2 emissions. At the same time, numerous ultra-modern manual and automatic transmissions are being introduced.