IROX bearings from Glyco are designed around the needs of modern stop-start engine

Enabling Change with Federal-Mogul’s Latest Technologies

Federal-Mogul’s latest technologies are helping to reduce CO2 emissions and fuel consumption. Hear how they are achieving this through technical partnerships with vehicle manufacturers.

Federal-Mogul’s latest technologies are developed for the OEM’s to meet today’s emissions and economy challenges. These technologies can be broadly classified as either direct solutions or enabling solutions. A direct solution makes an immediate improvement, such as reducing friction or cutting component weight. Enabling solutions help designers to implement new engine strategies reliably, such as allowing the use of turbocharging to increase efficiency.

Many of these technologies lead engine designers towards downsizing, creating smaller engines that produce more power per litre, burn fuel more efficiently and have lower frictional losses. Specifying the right components, from new and during repair, has never been more critical to ensure long service life.

Three recent Federal-Mogul product groups embody the changing technologies within the modern engine: IROX bearing and DuraBowl pistons are examples of enabling solutions, while LKZ-Rings are a direct solution.

Federal-Mogul’s Latest Technologies

  • Glyco Irox Bearings

Glyco Irox Bearings are one of Federal-Mogul’s latest technologies. Irox bearing technology addresses the lubrication challenges arising from the increased engine restarts of stop-start hybrid engines, as well as the increased mechanical loads produced by heavily-boosted downsized engines and the thinner oil films generated by today’s lower viscosity oils.

It can increase the life of crankshaft surfaces and bearing shells by more than five times in the most demanding applications, and reduces friction by up to 50% compares to metallic sliding layers.

IROX is a polymer coating on the bearing shell and can withstand momentary operation without lubrication and can also carry the very high loads imposed by highly boosted engines. As well as increased impact absorption and wear resistance, it provides high thermal conductivity to keep the bearing cool.

  • Durabowl Pistons

Another of Federal-Mogul’s latest technologies is their DuraBowl pistons. In high performance, heavily downsized diesel engines, high pressure turbocharging and new fuelling strategies push piston temperatures beyond 400°C and cylinder pressures over 200 bar. Federal-Mogul identified that failures around the rim of the conventional piston bowls in this highly aggressive environment can be traced to the presence of silicon particles in the aluminum.

By re-melting the alloy around the rim of the bowl, the silicon particles can be reduced by only one tenth of their previous size, substantially increasing the strength and durability of the piston rim. The DuraBowl piston uses this technique to increase the service life to between four and seven times that of a conventional cast piston.

  • LKZ-Rings

Federal-Mogul’s 2011 PACE Award-Winning Goetze LKZ-Ring is a two-piece design originally developed for highly demanding diesel applications and now also optimised for direct-injection petrol engines. Compared with conventional two piece rings, LKZ-Ring reduces oil consumption by up to 50% and friction by up to 15%.

The key to the new ring’s oil is a “stepped” surface and taper on its contacting edge. Conventional piston rings apply equal pressure to the cylinder bore on both the up and down strokes. LKZ-Rings provide the required pressure to the cylinder wall on the down-stroke but significantly less on the up-stroke. This reduces frictional losses while more effectively returning oil to the oil pan rather than allowing it to enter the combustion chamber.

Federal-Mogul offers the complete package for engine repairs through a group of market leading brands and technology experts: AE, Glyco, Goetze, Nural, Payen and FP Diesel, all of which are available to order from FPS.


FPS is one of the UK’s leading providers of service-led supply chain solutions. Founded in 1934, and employing over 1,200 people, it operates from 23 sites in the UK. Acting as a distribution partner for a number of major brands, its core business is providing automotive parts, car accessories and consumables to the reseller network. Through recent expansion FPS now successfully provides wholesale distribution services in the Maintenance & Accessories sector, serving a number of blue-chip companies. Dedicated to service excellence and innovation, the company offers a wide range of services meeting the varying needs of manufacturers, suppliers, resellers and business consumers across the supply chain. For further details go to or contact