Any device used to remove foreign particles or impurities from air, oil, or other fluid. Air and oil filters are commonly used in vehicle engines to remove foreign particles from damaging the engine. In addition, some vehicles use filters to clean the air coming into the passenger cabin.
A large, heavy metal disc attached to an engine’s crankshaft. Flywheels are used to smooth the engine’s power pulses and smooth its power flow. The rim of the flywheel is often toothed to mate with the gear on the starter motor. In vehicles with a manual transmission, the flywheel is also part of the clutch assembly. Flywheels on vehicles with automatic transmissions are often referred to as flex plates.
FOG / DRIVING LIGHTS
These auxiliary lights are used to improve visibility in poor lighting conditions. They are typically mounted below the main headlights.
FOOT POUND (POUND FOOT)
A measure of the torque produced by the vehicle’s engine. Torque is a measure of how much force acting on an object causes that object (the engines crankshaft in this case) to rotate. (See “TORQUE”)
FOLDING REAR SEATS
Rear seats whose seat backs can be folded to increase a vehicle’s cargo capacity. There are several folding rear seat designs. A full folding rear seat means the entire seatback folds as one piece. Split folding rear seats mean that the seat back is split into to sections which can be folded independently. This allows one seatback to remain up so an occupant can use the seat. A split folding rear seat typically has one seatback larger than the other to allow maximum flexibility as in a 60/40 split.
(See “SEATBELT FORCE LIMITERS”)
A cylinder head design which feature four valves per cylinder (instead of two) for increased efficiency and performance. Fourvalve heads offer improved air flow into and out of the engine’s cylinders by using two exhaust and two intake valves.
FOUR-WHEEL DRIVE (4WD)
A drive-train that has the capability of distributing power to all four of a vehicle’s wheels. Four-wheel drive systems offer greater traction for poor road conditions, and can allow a vehicle to go off-road as well. There are several types of four-wheel drive systems.(See “FULL-TIME FOUR WHEEL DRIVE”)
FOUR-WHEEL INDEPENDENT SUSPENSION
A suspension system that permits each wheel of a vehicle to react to road conditions independently of the other wheels. This results in better ride and handling characteristics. Four-wheel independent suspensions is standard on all Hyundai vehicles. (See “SUSPENSION SYSTEM”)
The structural, load bearing component of a vehicle that supports and positions the body and major mechanical components. The frame acts as a vehicle’s “backbone”.
FRONT AIR DAM
A spoiler located below the front bumper. Air dams are designed to reduce the flow of air under a vehicle in order to increase stability. They can also be designed to increase airflow to radiators, reduce aerodynamic drag, and/or reduce lift.
FULL-CLOTH SEAT UPHOLSTERY
A deluxe type of upholstery which uses cloth on all sides of a seat. Less expensive upholstery has cloth only on the seating surfaces, with vinyl on the sides and rear of a seat.
FULL SIZE SPARE TIRE
A full-size spare tire can be used as a direct replacement for the vehicle’s tires. Temporary spare tires are for short-term emergency use only, and should not be driven at speeds over 80 km/h.
FULL-TIME 4-WHEEL DRIVE
A drive-train that distributes engine power to all four wheels all of the time - automatically transferring power from the wheels that slip to the wheels with better traction. This provides the driver with enhanced control and traction under most driving conditions. Fulltime 4WD is designed primarily to improve traction and performance on paved roads and highways in wet and/or slippery conditions.
FULL WHEEL COVERS
A wheel cover which covers the entire exposed surface of a vehicle’s wheels. Also known as “styled wheel covers”.
A drive-train system that powers a vehicle’s front wheels. Under certain driving conditions, generally, FWD provides better traction than rear-wheel-drive (RWD) systems because more weight is on the front wheels. FWD systems also allow vehicles to be designed with more interior space because the engine and drive-train are all concentrated at the front of the vehicle. All Hyundai vehicles feature front-wheel-drive.
A type of fuel system that injects a precise amount of fuel into an engine’s cylinder at precisely the right time. The simplest fuel injection systems are known as Throttle Body Fuel Injection (TBI) which use single or dual injectors in a central chamber which supplies all of the cylinders. The more sophisticated systems are known as Port, or Multi-Port Fuel Injection (MPFI) systems which position an injector ahead of the intake valve(s) of each cylinder. Fuel injection systems are more efficient than carburetors and provide more power, reduced emissions, and improved fuel economy.