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MacPherson Strut

A suspension architecture combining spring and damper into a single load-bearing unit. It supports vehicle weight and controls wheel motion. The design influences camber behaviour and packaging efficiency. See: Suspension Architectures

Magnetic Flux

The total magnetic field passing through a defined area. Magnetic flux underpins electric motor and generator operation. It governs torque production and efficiency. See: Electric Motor Principles

Manifold Absolute Pressure

The pressure within the intake manifold used to infer engine load. MAP signals support air mass estimation and fuel calculation. They are central to engine control strategies. See: Engine Sensors

Mass Moment of Inertia

A measure of resistance to rotational acceleration about an axis. It affects steering response and rotational dynamics. Mass distribution strongly influences this property. See: Rotational Dynamics

Mean Effective Pressure

A calculated pressure representing average cylinder pressure contributing to torque. It allows engine performance comparison independent of displacement. MEP is used in engine analysis. See: Engine Performance Metrics

Mean Piston Speed

The average linear speed of piston travel. It is used to assess mechanical stress limits. Higher piston speeds increase wear risk. See: Engine Kinematics

Mechanical Efficiency

The ratio of useful mechanical output to total input energy. Mechanical efficiency reflects internal friction and losses. It influences overall system performance. See: Engine Efficiency

Mixture Preparation

The formation of a combustible air–fuel mixture prior to ignition. Mixture quality affects combustion stability and emissions. It is a focus of intake and injection design. See: Combustion Systems

Modulus of Elasticity

A material property describing stiffness under applied stress. It governs elastic deformation behaviour. It is fundamental to structural design. See: Automotive Materials

Motor Generator Unit

An electric machine capable of operating as motor or generator. MGUs enable propulsion and energy recovery. They are central to electrified powertrains. See: Electrified Powertrains

Mounting Isolation

The use of compliant mounts to reduce vibration transmission. Mounting isolation improves comfort and durability. It is a key NVH control strategy. See: NVH Control

Multiplate Clutch

A clutch design using multiple friction interfaces to transmit torque. It enables high torque capacity in compact space. Multiplate clutches are used in automatic transmissions. See: Clutch Systems