Valves

This tribological system subject to high thermal and mechanical stress also enables MAHLE to demonstrate its system competence.

The extensive design and material expertise of MAHLE guarantees customer-specific, integral, functional, and cost-optimized solutions which withstand the toughest operating conditions. MAHLE always looks at the complete tribological system for development work in this field.

Valves
MAHLE produces intake and exhaust valves in forged and hot extrusion versions with a broad range of materials for gasoline and diesel engines of all sizes. Depending on the stress load, valves are seat armored, hardened, nitrated, or chrome-plated. Sodium filled hollow valves are also used for particularly high thermal and mechanical loads.

New cost-effective valve alloys for highly stressed exhaust valves are one important focus in the valve development by MAHLE. Coating and other measures are developed to prevent valve deposits in GDI engines.