Educational Mechanics
Heat Dissipation
The process by which thermal energy generated in vehicle systems is transferred away to maintain safe operating temperatures. See: Automotive Thermal Management
Heat Exchanger
A device allowing thermal energy transfer between fluids without mixing, commonly used in radiators and oil coolers. See: Cooling System Components
Hydraulic Brake System
A device allowing thermal energy transfer between fluids without mixing, commonly used in radiators and oil coolers. See: Cooling System Components
Hydraulic Pressure
The force per unit area exerted by a fluid, forming the basis of operation for braking and clutch systems. See: Automotive Hydraulics
Hydrodynamic Lubrication
A lubrication regime where a full fluid film separates moving surfaces, minimising wear and friction. See: Lubrication Regimes
Hybrid Powertrain
A propulsion system combining an internal combustion engine with one or more electric machines. See: Hybrid Vehicle Architectures
Hysteresis
Energy loss occurring when a material is subjected to cyclic loading, relevant in tyres, dampers, and rubber components. See: Material Behaviour in Vehicles
High-Pressure Fuel Pump
A mechanically or electrically driven pump supplying fuel at pressures required for direct injection systems. See: Fuel System Architecture
Horsepower
A unit of power historically used to describe engine output, representing the rate of work performed. See: Engine Power Measurement