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Vauxhall Begins Extensive Powertrain Renewal

Vauxhall Begins Extensive Powertrain Renewal
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Vauxhall is launching three new engine families and 13 new engines between 2012 and 2016, renewing 80 per cent of its engine portfolio. In the same period the company will also launch a host of new transmissions.

 Vauxhall is beginning the renewal of its powertrain portfolio now, by introducing all-new 1.6-litre petrol and diesel engines, together with second generation five and six-speed gearboxes. They will be joined by the end of this year by a new small-displacement petrol engine family. All are developed to deliver class-leading performance and refinement.

Focused on meeting a growing customer demand for ‘downsized’ engines offering strong power with reduced fuel consumption and CO2 emissions, the new petrol and diesel powertrains are being progressively introduced across the Vauxhall product range. Best-in-class power densities and levels of refinement define both 1.6-litre engine families, while the further improved gearboxes provide a smooth gear shifting quality which matches the benchmarks amongst Vauxhall’s competitors.

An all-new six-speed gearbox and a new automated manual transmission follow in the near future. Class-leading: All-new 1.6 SIDI Turbo petrol engine Featuring Spark Ignition Direct Injection (SIDI), this all-new, four-cylinder petrol engine comes in two configurations. The Eco Turbo version, delivering 170PS and 280Nm peak torque, is focused on optimised fuel economy, generous low-end torque and outstanding flexibility.

The Performance Turbo, packing 200PS and 300Nm peak torque, boasts an exceptional specific power output of 125PS per litre which is best in class among Vauxhall’s competition. Compared to Vauxhall’s previous 1.6-litre turbo engine, CO2 emissions and fuel consumption have been cut by 13 per cent, while peak power and torque are increased by up to 30 per cent. The Eco Turbo’s superb flexibility is demonstrated by a 20 per cent improvement in fifth gear acceleration from 50 to 75mph, while the 200PS Performance Turbo adds an even sportier edge to the new engine’s character.

Technical highlights include: - Class-leading refinement: only engine in its class to feature balance shafts for smooth running. Innovative thin-wall cylinder block with mass-saving, two-piece crankcase and die-cast aluminium bedplate. Host of ‘sound engineering’ measures for low noise and vibration, including fine-tuning for specific vehicle applications. - Optimum fuel efficiency with minimal emissions: spark plug/fuel injector units centrally located at top of combustion chamber. - Fast throttle response: dynamic turbocharger boost strategy giving rapid response comparable to twin-scroll design, plus improved packaging. Compressor with low and high-pressure resonators to suppress airborne hiss and pulsation noise.

Class-leading: All-new 1.6 CDTi diesel engine Vauxhall’s all-new, 1.6-litre turbo diesel delivers class-leading performance across all key engine parameters. It is launched in the Zafira Tourer and will be rolled out to replace the current 1.7-litre engine in a wide range of Vauxhall models, with even more powerful versions to come. Packing 136PS and strong torque of 320Nm, Vauxhall’s first all-aluminium diesel engine boasts an exceptional power density of 85PS per litre which is unrivalled in its class. Its low fuel consumption and CO2 emissions are already demonstrated by the Zafira Tourer’s best-in-class figures. In common with its petrol counterpart, the 1.6 CDTi benefits from a series of ‘sound engineering’ measures in its design and fine-tuning to minimize noise, vibration and harshness. It has recorded the lowest sound ratings in testing with the Zafira Tourer against other vehicles using 1.6-litre turbo diesel engines. With Vauxhall’s BlueInjection selective catalytic reduction (SCR) system or lean NOx trap (LNT) technology enabling compliance with Euro 6 emissions standards, the 1.6 CDTi is as clean as a petrol engine in operation.

Technical highlights include: - Aluminium cylinder block and bedplate, saving more than 20kg in weight. - Optimised performance with closed-loop combustion control and multiple fuel injections, up to 10 per cycle, for efficient, clean and quiet running. - Rapid throttle response with variable geometry, water-cooled turbocharger operating at high peak boost pressure of 1.7 bar. - Lowest internal engine friction rating, switchable water pump and variable displacement oil pump all contribute to fuel economy and reduced CO2 emissions. Enhanced manual and automatic transmissions portfolio With numerous revisions to internals and the shifter mechanism, Vauxhall’s second generation five and six-speed gearboxes have been benchmarked against competitor offerings for superior shift quality. They are now being rolled out for Corsa, Meriva, Astra, Zafira and Insignia models with engines exceeding 130Nm of torque.

For small and sub-compact vehicles, with engines rated up to 220Nm maximum torque, Vauxhall has designed an all-new six-speed gearbox. It is significantly lighter than similar gearboxes and incorporates many of the modifications from the second generation units. For the ADAM and Corsa, a new automated manual transmission offering sequential-style gear shifting and start/stop functionality, as well as five-speed automatic operation, is under development. Improvements to Vauxhall’s current generation six-speed automatic transmission will be followed by the debut of an all-new, eight-speed transmission. The wider gear spread will enable an average improvement in fuel economy of more than three per cent.

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