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Commonrail

What is Common Rail

Common Rail is a monoblock component – made of one part – that distributes fuel in the cylinders of the engines. Sidenor has long been active in this market for diesel engines, which use alloy steels. This component is now reaching gasoline engines, thus replacing traditional injectors. Still, the high pressures resulting from gasoline injection require the use of stainless steel which has to, on one hand, support the mechanical stresses and, on the other, resist corrosion.

This technology will provide gasoline engines with higher energy efficiency and less polluting emissions.

It should not be forgotten that problems resulting from diesel engine emissions help open the way for this new generation of gasoline engines.

The components made from forged parts with our steel comply with all these requirements. They provide high mechanical resistance, corrosion resistance and tightness. Their monoblock design also eliminates problems in seals mounting.

Sidenor, in cooperation with the component manufacturer, has designed austenitic stainless steels whose composition is adapted to these high requirements.  They are currently working together in improving the component of two research lines: improving the behaviour to fatigue and optimizing the machining and electrical discharge machining process.

Sidenor is already providing stainless steel which will be forged and machined and then turned into a component of the engine of some of the most prestigious European automobile manufacturers.

The current trend suggests exponential increase for common rail systems for gasoline injection, while operating pressures are also expected to increase from their current level of 450 bar to approximately 1,000 bar.

Monoblock common rail for a 3-cylinder injection engine.