Supplier Spotlight

Video Exclusives

Continental Active Purge Pump

gtr

Continental details its APP technology as a new solution to meet stricter hydrocarbon evaporation legislation around the globe


Ferrari 812 Superfast powertrain

gtr

Ferrari details its IEOTYA 'Above 4-liter' category winning engine, as fitted to its latest model, the 812 Superfast


Click here/on image to watch video

Do you feel that the increasing political pressure on the IC engine is justified?

News

Delphi and Tula debut new cylinder deactivation

Tula Technology Inc. and Delphi Automotive PLC have revealed a radical step in engine control that takes dynamic cylinder deactivation, previously only found on large multi-cylinder engines, firmly into the realm of smaller 4-cylinder units. At the Aachen Colloquium, Tula and Delphi will demonstrate a 4-cylinder, 1.8 liter turbo GDi engineering vehicle fitted with Dynamic Skip Fire (DSF), the industry’s first fully variable engine cylinder deactivation technology.

DSF is said to improve fuel economy, and reduce CO2 by 10% compared with a state-of-the-art production 4-cylinder engine. The companies believe that in addition to these direct benefits, the system will also provide engine designers with new opportunities to optimise combustion strategies.

“Cylinder deactivation systems allow engines to operate more efficiently because the cylinders still firing run nearly unthrottled, increasing combustion efficiency and reducing pumping losses,” explained Tula’s CEO, Scott Bailey. “The challenge on smaller engines is that not firing some cylinders can create a refinement issue. Driving our new demonstration vehicle clearly shows that Tula and Delphi together have solved this challenge, making the substantial benefits of cylinder deactivation available across all popular powertrain configurations.”

DSF determines which cylinders fire in real-time, at each firing opportunity. Because it is an integral part of the engine control strategy, valve activation, throttle opening and ignition can all be optimised synergistically. The selection of which cylinders to deactivate is made based on avoiding known resonance patterns within the engine, providing exceptional refinement.

“By making a fire / no fire decision for every cylinder on every cycle, Dynamic Skip Fire takes cylinder deactivation technology to the theoretical limit,” added Tula’s vice president engineering, John Fuerst. “In future implementations we can integrate strategies to manage exhaust oxygen levels to protect aftertreatment on overrun, we can enhance Miller Cycle operation, we can complement hybridisation, even advanced combustion concepts like gasoline compression-ignition and much more.”

The joint development programme shows that DSF can reduce CO2 by at least 50% more than a conventional cylinder deactivation system when applied to a 4-cylinder engine, while enhancing refinement. Delphi’s vice-president engineering for Powertrain Systems, Martin Verschoor says that the benefits take a further step-up when combined with other Delphi technologies.

“For example, our research shows that the benefits to a 4-cylinder engine with DSF increase significantly when paired with “intelligent” electrification such as Delphi’s 48 V system,” he states. “Delphi’s 48v system on its own can reduce emissions and fuel consumption by more than 10% in direct injection engines. When combined with DSF, we anticipate a drop in both fuel consumption and CO2 emissions that could be 20%.”

11 October 2016


Read Latest Issue

International Engine of the Year Awards
Read Latest Issue

Web Exclusive Articles

Engines on test: Honda K20C1 2.0-liter turbocharged I4
Type-R once stood for raw, naturally aspirated performance, but as legislation tightens its relentless grip around that offshoot of engine design, how well does its spirit translate in to the latest generation of hot hatchbacks from the Japanese OEM?
Read Now

Engines on test: BMW TwinPower 3.0-liter diesel
Whilst the entire world looks happy to turn its back on diesel, BMW is persisting with the fuel source with its range of magnificent TwinPower engines, proving that mpg and performance aren't mutally exclusive. We see just how good the 3.0-liter engine is, in the all-new 530D X-Drive
Read Now

Singer Williams lightweight air-cooled flat-six: The Knowledge
Singer Vehicle Design has released details of its performance research study with Williams Advanced Engineering, which looked at creating a ligher, more powerful air-cooled flat-six
Read Now

Read Latest Issue

Supplier Spotlight

Supplier SpotlightClick here for listings and information on leading suppliers covering all aspects of the engine technology industry. Want to see your company included? Contact aboobaker.tayub@ukimediaevents.com for more details.

فروشگاه اینترنتی فروشگاه اینترنتی سیستم همکاری در فروش کانال تلگرام چت روم ماهواره آنلاین اندروید دانلود فیلم فروشگظ;ه اینترنتی

Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the engine technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to d.slavnich@ukimediaevents.com

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email aboobaker.tayub@ukimediaevents.com