With 168 bhp and 295 ft lb, Vauxhall’s all-new 2.0-litre CDTi diesel engine will debut at next month’s Paris motor show.

The newly designed unit will be revealed in the Insignia and Zafria Tourer as Vauxhall continues the roll out of its new powertrain portfolio. The new engine replaces the current 2.0 CDTi (161 bhp) engine at the top of Vauxhall’s diesel range.

Vauxhall claims the new Euro 6-compliant engine delivers almost five per cent more power and 14 per cent more torque while reducing fuel consumption and CO2 emissions.

The engine is also said to be more quiet and smooth as a result of Vauxhall’s ‘sound engineering’ measures to minimise NVH (noise, vibration, harshness). Engine noise has been reduced by five decibels.

The new engine’s power density is 84 bhp per litre, the same as Vauxhall’s 1.6 CDTi ‘Whisper Diesel’ unit. Torque of 295 ft lb is available from 1,750 to 2,500 rpm, and maximum power of 168 bhp is accessed at 3,750 rpm.

Vauxhall engineers say the key to the engine’s enhanced performance are the newly-designed combustion chamber, the re-profiled intake ports and the new fuel injection system with 2,000 bar and up to 10 injections per cylinder cycle. The definition of the combustion chamber was the subject of more than 80 computer design simulations, before the best five were finally selected for hardware development.

The new 2.0 CDTi is also said to run as clean as a petrol engine owing to Vauxhall’s BlueInjection Selective Catalytic Reduction system. BlueInjection is an after-treatment which removes NOx from the engine’s exhaust gases.

Available next year, the new 2.0 CDTi is the first in a new family of large diesel engines developed in-house by a global team of engineers in Turin and Rüsselsheim supported by engineers in North America. It will be manufactured at Opel/Vauxhall’s Kaiserslautern engine plant in Germany.

“This excellent new powertrain is part of the company’s €4 billion investment in product and powertrain development, which is helping to bring 23 new products and 13 new engines to market” said Vauxhall boss Tim Tozer “This new large diesel engine is extremely important to Vauxhall as a sizable amount of customers chose a 2.0-litre CDTi engine.”

The 2.0-litre CDTi unit is the latest step in Vauxhall’s powertrain offensive, following the introduction of all-new 1.6-litre petrol and diesel engines and a 1.0-litre three cylinder petrol powertrain.

Source: Vauxhall

Tags: 2.0 CDTi, BlueInjection, engine design, engineering, Kaiserslautern, Tim Tozer, Vauxhall