Motormechanik

Motormechanik is the branch of mechanical engineering that studies the transformation of chemical energy into mechanical work by engines. It covers the components, mechanisms, and systems that convert and control motion, including internal combustion engines used in road vehicles, ships, and power generators, as well as other motive devices such as rotary engines.

Central topics include the crank-slider mechanism that converts piston motion to shaft rotation, the piston, connecting rod, crankshaft, and the valvetrain with camshaft, valves, and actuators. Timing, lubrication, and cooling are essential subsystems. Fuel delivery, ignition, air intake, exhaust, and turbocharging affect performance and durability. Analysis addresses kinematics, dynamics, stresses, wear, and vibration.

Methods and tools include analytical modeling of mechanisms, kinematic and dynamic analysis, CAD and finite element analysis for stressed parts, and experimental testing on dynamometers to measure power, torque, efficiency, and emissions. Diagnostics and maintenance practices target reliability and durability.

Applications and education: Motormechanik is central to automotive engineering, as well as marine, aviation, and stationary power sectors. It is a core topic in mechanical and automotive curricula and intersects with thermodynamics, fluids, materials science, and control engineering.

Trends: Engine downsizing and boosting, variable valve timing, advanced lubrication, hybrid powertrains, alternative fuels, and emissions reduction, while preserving durability and cost-effectiveness.