Technologies · Page 3
Automotive technologies covering operating principles, sensor and actuator relationships, control strategy, networks and diagnostic measurements.
Alphabetical technical index
Series hybrid
A hybrid where the electric motor drives the wheels and the combustion engine powers a generator.
Single-point injection
A system delivering fuel through one or a small number of injectors near the intake entry.
Spark-ignition engine
An engine family in which an air-fuel mixture is ignited by a spark plug.
State of charge
An estimate of the usable energy remaining in a battery.
State of health
A measure of battery capacity and performance relative to its new condition.
Supercharger
A forced-induction system mechanically driven by the engine.
Switched-reluctance motor
An electronically commutated motor producing torque through changing magnetic reluctance.
Synchromesh manual transmission
A manual transmission using synchronisers to match gear speeds.
Three-way catalytic converter
A catalyst reducing CO, HC and NOx emissions simultaneously in petrol-engine exhaust.
Toroidal CVT
A continuously variable transmission using toroidal discs and power rollers.
Torque-converter Automatic Transmission
An automatic transmission using a torque converter and planetary gearsets.
Torque-converter automatic transmission
An automatic transmission using a hydrodynamic torque converter and planetary gearsets.
Traction Control System
A system limiting excessive slip at driven wheels.
Traction inverter
Power electronics converting battery DC to multiphase AC for the motor and reversing the flow during regeneration.
Transfer case
A driveline unit distributing torque between front and rear axles.
Turbocharger
A forced-induction system compressing intake air using exhaust-gas energy.
Twin-scroll turbocharger
A turbo layout separating exhaust pulses into two paths to improve turbine response.
Two-stroke Engine
An internal-combustion engine completing its cycle in two piston strokes.
Unified Diagnostic Services
Services defining diagnostic sessions, data access, tests and programming for control units.
Unit injector
A diesel system combining pumping and injection functions in one unit per cylinder.
V Engine
An engine architecture with cylinders arranged in two angled banks.
Variable compression ratio
A system changing geometric compression ratio according to operating conditions.
Variable-geometry turbocharger
A turbocharger varying turbine inlet geometry to manage flow across speed and load.
Wankel Rotary Engine
An internal-combustion architecture using a rotating rotor instead of reciprocating pistons.
Wastegate
A valve controlling boost by diverting exhaust flow around the turbine.
Wet-sump lubrication
A common lubrication layout storing engine oil in the sump.