Categoria: Industry Articles @pt

Audi S5 Coupe Turns To Turbo Power

The new Audi S5 Coupe turns to turbo power, the German manufacturer having selected a 3.0 litre turbocharged V6 engine to power the new model.

It replaces the 3.0 litre supercharged V6 from the old S5, and making 354 hp and 369 lb-ft of torque, this new Audi S5 makes 21 more horsepower than the outgoing car and 44 lb-ft more torque.

While that doesn’t sound like a lot, it feels like a lot more on the road. This is because the new turbocharged engine makes its peak torque at 1,370 rpm, while the older supercharged engine needed 2,900 revs to do so.

So while the new S5 has a touch of lag, its torque comes on like a sledgehammer immediately after and it pulls hard through the rev range, bringing up 0-60 mph in just 4.4 seconds.

Paired to that engine is an eight-speed ZF-sourced automatic and it works perfectly. Sure, a dual-clutch might be snappier and a bit more exciting but the ZF eight-speed is a delight, with smooth, rapid shifts in manual-mode and the ability to disappear and softly shrug off gear changes in auto-mode.

See full story here.    quattrodaily.com

Infiniti to bring F1-style hybrid turbo set up to the road

Infiniti is to bring an F1-style hybrid turbo set up to the road. It’s expected to reveal its production-ready, performance hybrid Q60 Black S at this year’s Paris motor show in October, but it won’t be on sale until at least 2020.

The 500hp (370kW) Black S model will tap into the company’s collaboration with the Renault Sport Formula 1 team. A twin-turbo V6 engine will be paired with an energy recovery system (ERS) that re-deploys captured energy to augment power and torque.

The company claims it will be the first accessible road car using up-to-date F1 tech, given the Mercedes-AMG Project One’s prohibitive price.

See full story here.

Cadillac introduces first-ever twin-turbo V-8 engine

Cadillac introduces first-ever twin-turbo V-8 engine, beginning a new chapter in its high-performance legacy. It is the centrepiece of the new CT6 V-Sport, an engaging sports sedan infused with DNA of Cadillac’s world-renowned motorsports program.

Developed as a small-displacement V-8 in the classic vein and offering exceptional power density of 131 hp (98 kW) per litre, this new Cadillac-exclusive 4.2L Twin Turbo V-8 — GM estimated at 550 horsepower (410 kW) and 627 lb-ft of torque (850 Nm) — elevates the CT6’s performance to a new plateau and offers drivers an unparalleled experience behind the wheel. An optional 500-horsepower version will also be available.

The new Cadillac Twin Turbo V-8 is a clean-sheet design that also introduces unique design elements developed to balance performance and efficiency with compact, mass-efficient packaging.

See the full story here.

VW’s new 130 PS petrol engine is as efficient as a diesel

Progress makes the impossible possible. This is exemplified by a petrol engine like no other before it: a petrol engine that offers diesel-like fuel economy but is significantly cheaper to buy. A petrol engine that during the journey occasionally simply switches off two of its four cylinders or even takes a complete break. A petrol engine that combines supreme torque with low emissions.

Volkswagen has developed such an engine: the new 1.5 TSI ACT BlueMotion. It has an output of 96 kW / 130 PS and is currently already powering the Golf1/2 and Golf Variant3/4. In the future, the efficient 1.5 TSI ACT BlueMotion will also be available for other Volkswagen models.

Greater efficiency. The combined fuel consumption of a Golf 1.5 TSI ACT BlueMotion is just 4.8 l/100 km. The NEDC extra-urban figure drops to 4.0 l/100 km/h (DSG: 4.1 l/100 km). Every driver can achieve low fuel consumption figures with this 1.5-litre engine, as it is 10 per cent more efficient than comparable petrol engines.

Active Cylinder Management – ACT. Whenever possible, Active Cylinder Management – called ACT for short – deactivates the two inner cylinders. It always does this at times when power demand is low.

‘Eco-coasting’. The 1.5 TSI ACT BlueMotion achieves an extra level of innovation when combined with the seven-speed DSG dual clutch gearbox. When so equipped, the drivetrain can be classified as a micro-hybrid system: as soon as the driver lets the Volkswagen ‘coast’, i.e. predictively releases the accelerator pedal for conditions ahead or is going down a slight slope, the engine management system switches off the TSI completely and decouples it from the drivetrain by disengaging the clutch.

Efficient TSI Miller cycle. In parallel with the cylinder deactivation and complete engine shut-off, a further feature of the 1.5 TSI ACT BlueMotion is the new TSI Miller cycle combustion process. This entails the use of optimized valvetrain control (early closure of inlet valves) – combined with higher compression and turbocharging. It innovatively controls combustion of the fuel and air mixture, which leads to an improvement in efficiency of up to 10 per cent.

Variable turbine geometry. As the inlet valves are open for shorter periods in the TSI Miller cycle, the cylinders must be filled with the cylinder charge at a boosted charge pressure. To do this Volkswagen utilises a turbocharger with variable turbine geometry (VTG). Thanks to VTG it is possible to adjust increases in turbine output.

A TSI with a great future. Within the foreseeable future, Volkswagen will be launching further derivatives of the 1.5 TSI ACT BlueMotion in global markets. Fewer cylinders, smaller engine displacements and significantly greater power are all equally conceivable.

See full story here.

Alpina ‘hot diesel’ BMW X3 has four turbochargers

The Alpina XD3, launched at the Geneva Motor Show has a total of four turbochargers hanging off of its 3.0-litre inline-six cylinder engine.

The result is an engine that makes 382 horsepower and 568 pound-feet of torque. That power and torque is channeled through an eight-speed automatic to all four wheels. It also has a limited-slip differential for the rear wheels. Alpina claims this powertrain allows the XD3 to hit 62 mph in 4.6 seconds on the way to a top speed of 165 mph.

See full article here.