Air impulse valve
Valve located in the intake pipe ahead of the cylinder head, which is regulated electromagnetically in order to achieve variable charge exchange control. Articulated piston
MAHLE developed the 2-piece FERROTHERM® piston to accommodate the high loads on high-performance engines in commercial vehicles. The two parts of the piston are connected only by the piston pin, i.e., the guiding and sealing functions are separated, as are the heat dissipation and transmission of power. CamInCam® camshaft
Variable camshaft consisting of two shafts, one inside the other. The exhaust cams are connected firmly to the outer shaft, and the intake cams are joined to the inner camshaft. This achieves the functionality of two adjustable camshafts in the installation space of one camshaft. Camshaft, cast
Casted in the single piece, the camshaft is then machined. Camshaft, composite
The composite camshaft consists of the individual parts main shaft, drive element, cams, and other parts, assembled by means of thermal shrink fit. Chilled cast iron camshaft
When manufacturing a camshaft using chilled cast iron, casting techniques ensure that the cast iron on the cams solidifies more quickly, forming a hard carbide structure. Dethrottling
Reducing the throttling loss, for example by means of exhaust gas recirculation, low-displacement supercharged engines, calibration of the intake pipe and exhaust system, cylinder shut-off, or by completely removing the throttle valve. Downsizing
The performance and torque characteristics of smaller engines are improved by increasing the mean effective pressure, allowing them to replace larger engines. EGR assembly
Assembly consisting of EGR valve and EGR cooler with bypass. Depending on the definition used, the mixing chamber is part of either the EGR module or the intake module. Exhaust gas recirculation (EGR)
In exhaust gas recirculation, some of the exhaust gas is added to the intake air. This results in a reduction of nitrogen oxides (NOx) during combustion, allowing the compliance with emissions limits. Flex-fuel vehicle (FFV)
Flex-fuel vehicles (FFV) or dual-fuel vehicles can run on either pure gasoline or a variety of similar fuels, such as mixtures of ethanol, bioethanol, or methanol and gasoline. Forged fracture-split connecting rod, cracking technology steel connecting rod
The fracture-splitting of the big end connecting rod in two parts is referred to as cracking. Fully variable valve train
Type of valve control in which valve lift, valve opening time, and valve timing can be varied. Its main objective is to allow the engine to run without a throttle valve to reduce throttling loss. HCCI - homogeneous charge compression ignition
An engine concept in which the combustion of a homogeneous mixture of fuel and air, distributed evenly within the combustion chamber, begins almost simultaneously throughout the combustion chamber. The ignition is triggered by the increase in temperature resulting from the compression and any radicals remaining in the combustion chamber. | | Hollow valve
Lightweight steel valve configured as a hollow body. The stem consists of a precision steel pipe. Valve cone and valve plate are manufactured from sheet metal parts. Sodium-filled hollow valves are used for engines subject to extremely high thermal loads. Intake module
Assembly consisting of several combustion air guide components located in front of the combustion chamber, including the intake pipe, throttle valve, and, in vehicles with exhaust gas recirculation, the mixing chamber. Intermetallic phase
Intermetallic compound (also called intermediate phase) - a homogeneous chemical compound of two or more metals. Impactor
Component in which particles are deposited as a result of their inertia, i.e., because of their mass and diameter, the particles cannot follow the flow field of the carrier gas and therefore collide with an obstacle. MONOTHERM® piston
MAHLE trademark for a single-piece forged steel piston. The piston skirt is firmly connected to the pin bore and the piston crown. NIKASIL®-coated cylinder crankcase
MAHLE trademark for a protective surface coating for engine components, particularly cylinder liners. It improves the tribological properties of the cylinder bore and the interaction between cylinder liner and piston. Piston/connecting rod assembly
Assembly consisting of piston, piston rings, connecting rod, piston pin, and pin retainer. Power cell unit (PCU)
Assembly consisting of piston, piston pin and pin retainer, rings, cylinder liner, connecting rod, and bearings. PVD coating
Physical vapor deposition - vacuum-based coating methods or thin-film technologies in which the coating is vapor-deposited directly onto the surface by means of condensation of a material vapor of the starting material. Roller-type cam follower, switchable; roller tappet
The movement of the valves is triggered by the camshaft and transferred to the valve shaft via transfer elements, e.g., roller-type cam followers or roller tappets. Switchable roller-type cam followers make it possible to switch between full, partial, and zero valve stroke. Supercharging
Increases the efficiency of a combustion engine: More air and thus more oxygen is pumped into the combustion chamber, thereby improving its volumetric efficiency and performance. Tribology
Tribology is the science of friction, lubrication and wear of interacting bodies in relative motion. Valve train
Assembly for controlling the opening and closing of the gas exchange valves of a combustion engine. |