Booster Online

Providing the Boost at Geneva Motor Show

Posted 03.02.2011

• 
• 
• • 
  • Share this on:
  • Mixx
  • Digg
  • Facebook
  • delicious
  • reddit
  • StumbleUpon
  • MySpace!
  • Twitter
  

Smallest VNT™ Boosts Peugeot’s New Low Emission Hybrid

Small, Smart and Eco-friendly

For PSA Peugeot-Citroen, small isn’t only beautiful, it’s increasingly fuel efficient as the manufacturer unveils its latest addition to the 308 range at Geneva – a new 1.6L turbodiesel engine featuring micro-hybrid Stop-Start technology. While the new 308 e-HDi retains the characteristic dynamic performance and roomy interior of this range, it is also now setting the pace when it comes to eco-friendly technology, recording class-leading emissions output thanks, in part, to turbo innovations implemented by Honeywell.

Engine Performance

The new 1.6L e-HDi FAP Euro 5 engine is part of PSA’s intelligent micro-hybrid diesel engine series, incorporating Stop-Start technology that shuts off the engine when at idle and restarts it upon release of the brake pedal. This system, which is powered by a battery that is recharged during deceleration, is estimated to achieve a 15% reduction in urban fuel consumption, while the car’s ultra low emissions output of 98g/km – a 5g/km improvement – makes it the ‘greenest’ family hatch-back in its class. Important contributors to this frugal efficiency are Honeywell’s smallest available VNT™ turbo and the electronically-controlled 6 speed automated manual gearbox.

Turbo Insight

Small but powerful is how best to sum up the performance of Honeywell’s VNT turbo, which boosts the new Peugeot 308 engine. Particularly challenging for the turbo engineers working in partnership with PSA was designing architecture optimized to meet the significant stresses placed on the turbo by the Stop-Start system. The Honeywell team focused on improving transient performance for the Stop-Start phase, designing a new turbine wheel to improve efficiency and controllability, while specifying a ‘Z’ bearing system both to reduce power losses and to ensure robust durability throughout the engine life-cycle. Compared to the S bearing system, which has separate parts for the radial and axial functions, the Z bearing design combines the two functions in one part, resulting in less power losses and increased bearing integrity. A newly designed pneumatic actuator, with position sensor, enhances overall turbo efficiency.

Says Alain Laurent, Honeywell’s PSA Team Manager: “Stop-Start engine technology is an important contributor to fuel efficiency and lower emissions, but it also increases the workload of the turbo. In the case of the PSA program, we have qualified the turbo and the actuation system way beyond the estimated life-cycle, with our unique ‘Z’ bearing design playing a key role in enhancing turbo robustness and reliability.”

World First – Ball Bearing VNT Turbo Boosts Premium Diesel Segment

Class-Leading Innovation

Daimler’s new 3.0L V6 diesel engine, destined for the Mercedes-Benz E, S & R Class series, is winning plaudits around the world for its stunning combination of performance, fuel efficiency and lower emissions. A significant contributor to this impressive powertrain evolution is the world’s first Ball Bearing turbo for the premium diesel segment, developed by Honeywell.

Engine Performance

With this extensive revision of the successful Mercedes-Benz V6 diesel engine in production since 2005, Daimler has succeeded in combining high power and torque with significantly reduced fuel consumption and emissions values. The latest V6 engine is delivering 18% more power and 22% more torque – a record in its class – while returning up to a 12% fuel efficiency gain and lower CO₂ and NOx emissions. Much of this performance uplift is driven through innovations and optimization linked to the engine’s turbo technology.

Turbo Insight

The Honeywell VNT turbo developed for Daimler brings to the premium diesel segment for the first time the driveability and engine efficiency benefits of ultra-fast turbo ramp-up delivered by Ball Bearing technology. Honeywell estimates that the Ball Bearing system delivers an improvement of 70% in time-to-torque improvement in accelerations from low engine speeds.

The turbo is water-cooled because of the engine’s high turbine inlet temperatures (up to 860°C) and also features electronic actuation to ensure precise alignment of turbo boost to engine requirements throughout the power range.

Karim Hassaim, Manager of Application Engineering at Honeywell Turbo Technologies says: “The high temperatures meant introducing advanced turbine materials including an innovative ‘boltless’ insert design which, jointly designed with Daimler engineers, guides the hot exhaust gases into the variable geometry nozzle and then out of the turbine wheel into the exhaust line.”

The overall result is a high temperature, high efficiency, low-inertia turbo that quickens responsiveness and contributes significantly to overall engine efficiency and driver experience.

World-leading TwoStage Turbocharging Boosts Land Rover

Fuel Efficient Luxury

Land Rover’s new 2011 Range Rover LR-TD is the world’s first V8 diesel-powered car to benefit from the performance and fuel efficiency contribution available through Honeywell’s TwoStage Parallel Sequential turbocharging system. This new vehicle continues the rich heritage of luxury motoring associated with one of the auto industry’s most famous marques – this time combining top end consumer appeal with engineering that delivers best-in-class transient dynamics.

Engine Performance

Featuring an all-new 4.4L V8 diesel EU5 engine, this is the first Range Rover to achieve fuel consumption of 30 mpg (UK) – a 19% improvement in fuel economy despite being a replacement for the smaller 3.6L turbodiesel predecessor. Land Rover says this is being achieved along with a 14% reduction in CO₂, even though it has managed to increase power by 15% to 230kW and torque by 9% to 700Nm to create the dynamic performance close to the hearts of its loyal customer base.

The 2011 Range Rover is boosted by Honeywell’s latest TwoStage Parallel Sequential turbo system, a diesel architecture that remains unique to Honeywell and which Land Rover credits as being a key contributor to fuel efficiency and performance when matched with other engine advances and a new transmission.

Turbo Insight

The TwoStage Parallel Sequential turbo system featured in the 4.4L Range Rover confirms Honeywell’s leadership in a technology first employed in a ‘V’ engine with the 3.0L V6D powering the Jaguar XF and XJ, Land Rover Discovery and Range Rover Sport. The two turbos work sequentially, with the primary VNT turbo providing boost at low engine speeds, thereby maximizing driveability and fuel economy, while the second free-floating turbo is activated in parallel at higher engine speeds and loads to deliver maximum boost.

Mark Norton, Senior Application Engineering Manager at Honeywell Turbo Technologies, says: “At the heart of the architecture is Honeywell’s patented valve turbine cartridge, a valve which channels optimum levels of gas flow to each of the turbos precisely when it’s needed. In applying this technology, we have been able to help Land Rover achieve its complementary goals of response, power, torque and fuel efficiency.”