autoevolution

Auto Glossary

6 TERMS

F

FOUR VALVES PER CYLINDER

Four valves per cylinder are mostly used on DOHC (Double Overhead Camshaft) engines. Two of the valves are for the air-fuel mixture intake while the other two open to allow the exhaust gases out of each cylinder.
Four valves per cylinder

FPS

The Fire Prevention System (FPS) is designed to interrupt fuel delivery in the event of a collision, thus minimizing the risk of fire.
Fire Prevention System

FSD

Full Self Driving (FSD) is a service offered by Tesla for vehicles equipped with FSD Computer Hardware 3.0 (HW3) and above, allowing full automated driving modes. It can recognize pedestrians, traffic signs, traffic lanes, and other vehicles.
Full Self-Driving

FUEL CUTOFF

A computer-controlled shutoff to the fuel system designed to prevent drivers from over-revving the engine, since over-revving is a primary cause of engine failure.
Fuel cutoff

FUEL INJECTION

Fuel injection is a mechanical or electronic system designed to inject atomized fuel directly into the cylinders of an internal-combustion engine. Essentially, it replaces the carburetor by being much more efficient, since the injection process is much better controlled.
Fuel Injection

FWD

Front-wheel drive (FWD) is a term use to describe a vehicle layout in which only the front wheels are powered.
Front-wheel Drive

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