Actuators In control engineering, they are the transducer counterparts to sensors, i.e. the actuating elements in a control circuit. It converts signals from a control unit into (primarily) mechanical work, i.e. motions, in order to open or close a flap for example. Blow-by heating Heats the blow-by gases that pass into the intake section in order to prevent freezing. Downsizing Effective concept for engines that allows fuel consumption and exhaust emissions reduction. This means that high power outputs and torques are produced with small displacements. Throttle-free load control Using fully variable valve control with no throttle blade. Dethrottling Reducing the throttling loss, for example by means of exhaust gas recirculation, low-displacement supercharged engines, tuning of the intake pipe and exhaust system, cylinder shut-off or even by completely removing the throttle blade. FERROTHERM® piston MAHLE trademark for a two-piece piston for commercial vehicles with forged steel crown and aluminum skirt. Susceptibility to seizure Risk of piston seizing, i.e. surface stress, caused by excessively high temperatures, lateral forces or lack of lubrication. Piston assembly Assembly consisting of piston, piston rings and piston pin. Piston alloy Alloys are used in order to influence the material properties. For pistons, high temperature-resistant aluminum alloys with silicon, nickel, magnesium, copper and other trace elements or steel alloys are used. Mechatronics The inter-disciplinary combination of mechanical, electronic and IT systems. Molybdenum An alloy element that is used to increase strength and resistance to corrosion and heat. MONOTHERM® piston MAHLE trademark for a single-piece forged steel piston for commercial vehicles. Engine peripherals Components and systems not directly built into the engine. At MAHLE, this primarily includes filter systems and their components. Camshaft, composite The composite camshaft is made up of individual parts (main shaft, drive wheel, cams and end piece) assembled using various joining processes. The cams can be made from wear-resistant material such as ball bearing steel, cast steel or powder metal materials. Articulated piston A two-piece piston in which the heat dissipation and transmission of power are decoupled via an articulated joint.

Rotor A rotating unit that operates according to the impeller principle. Intake module Assembly of air guide components, including intake manifold, adjusting valves and mixing chamber for exhaust gas recirculation. Chilled cast iron camshaft When manufacturing a camshaft using chilled cast iron, casting techniques ensure that the cast iron solidifies more quickly, increasing the hardness. The carbon in the outer region solidifies as iron carbide (Fe3C, cementite) and remains bound to the iron atoms, while otherwise it precipitates out of the iron structure as graphite. SCP (Single Cam Phaser) camshaft Variable camshaft consisting of two cam lobes, one inside the other, in which the exhaust cams are connected firmly to the camshaft tube, and the intake cams are joined to the inside cam lobe by a connecting element. This achieves the functionality of two adjustable camshafts using just one camshaft. Selective catalyst technology Process for reducing exhaust emissions in diesel vehicles by means of a urea solution. Powder metal materials Sintering is a method for making objects from powder, by increasing the adhesion between particles as they are heated and pressure is applied. It is used with ceramic powders and in powder metallurgy. Systems supplier Supplier who designs, assembles and supplies complete systems or system components. In contrast to the component supplier the systems supplier performs a large amount of development work. Telemetry Telemetering – denotes the transmission of readings from a sensor located at the measuring point to a remote location. Valve train Mechanism for producing valve lift. Fully variable valve train Continuous adjustment of valve lift and valve timing, which allows throttle-free load control. Cylinder assembly Cylinder with inserted pistons including piston rings and, if necessary, piston pin and pin retainer.