Tasked with delivering a robust solution for low levels of blow-by and oil consumption over the entire life of the vehicle, Federal-Mogul Powertrain’s piston and ring engineers worked closely as a team with BMW engineers throughout the development program. The high level of co-operation enabled the engine to incorporate a number of advanced Federal-Mogul Powertrain piston and ring technologies.
“Meeting the requirements for this engine was very demanding,” commented Gian Maria Olivetti, Chief Technology Officer, Federal-Mogul Powertrain. “Having four turbochargers tends to increase blow-by, which is also influenced by the use of direct bore coating rather than cylinder liners, resulting in slightly greater thermal expansion. Additionally, the higher peak cylinder pressures and specific power mean that the loads on both piston and ring pack are increased.”
Federal-Mogul Powertrain met all the targets by combining a number of its leading technologies with a state-of-the-art product traceability system. The aluminium piston uses DuraBowl® remelting to refine the micro-structure of the bowl rim and increase its strength and advanced 2D ultrasonic inspection ensures zero defects. A high cooling gallery location reduces bowl rim stresses through optimum cooling and an EcoTough® skirt coating reduces friction and wear, improving scuff resistance.
The ring pack was developed with the support of Federal-Mogul PRiME 3D® simulation software to meet the stringent blow-by and oil consumption targets and incorporates a number of technologies that are proprietary to Federal-Mogul Powertrain. The first compression ring carries a GOETZE® Diamond Coating (GDC) to optimize friction and wear; the oil control ring uses the LKZ® profile, which actively pulls oil away from the combustion chamber for low oil consumption throughout the life of the engine.
The traceability of every individual compression ring, rather than just each batch, is ensured by using DMC (data matrix codes) to record function-related features following 100 percent inspection, giving complete control of the entire production.
“By working closely with our customers from the earliest stages of a new engine program, we can ensure they take full advantage of the latest technologies available,” explained Marcus Freidhager, Piston Application Engineer and Project Manager, BMW Diesel, Federal-Mogul Powertrain. “This makes it possible to produce more efficient engines while ensuring robust performance and a long life from our components, even in the most highly rated applications.”
The new BMW quad-turbo diesel engine was announced at the 2016 Vienna Motor Symposium and will be available in 7-series models ordered from July onwards. In addition to the pistons, pins and ring packs, Federal-Mogul Powertrain also supplies bearings, valves, valve cotters and spring retainer caps for this engine.
Federal-Mogul operates two independent business divisions, each with a chief executive officer reporting to Federal-Mogul's Board of Directors.
Federal-Mogul Powertrain designs and manufactures original equipment powertrain components and systems protection products for automotive, heavy-duty, industrial and transport applications.
Federal-Mogul Motorparts sells and distributes a broad portfolio of products through more than 20 of the world’s most recognized brands in the global vehicle aftermarket, while also serving original equipment vehicle manufacturers with products including braking, wipers and a range of chassis components. The company’s aftermarket brands include BERU®* ignition systems; Champion® lighting, spark plugs, wipers and filters; Interfil® filters; AE®, Fel-Pro®, FP Diesel®, Goetze®, Glyco®, Nüral®, Payen® and
Federal-Mogul was founded in Detroit in 1899 and maintains its worldwide headquarters in Southfield, Michigan. The Company has more than 53,000 employees globally. For more information, please visit www.federalmogul.com.
*BERU is a registered trademark of
A photo accompanying this announcement is available at http://www.globenewswire.com/NewsRoom/AttachmentNg/601bb6e0-52ad-4905-bda9-2c3245ab9acc
CONTACT: Ursula Hellstern