Automobile

Automobile

Of or relating to any vehicle, usually designed to carry passengers, that operates on ordinary roads and typically has four wheels and a gasoline or diesel internal-combustion engine.

Industry: Automotive

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Automobile

Ride steer

Automotive; Automobile

A generally undesirable condition in which a wheel steers slightly as its suspension compresses or extends. Also called "bump steer."

Rigid axle

Automotive; Automobile

A simple non-independent suspension consisting of a rigid transverse member with wheel hubs solidly bolted to it. The axle can be attached to the body by leaf springs, or by a combination of ...

Ring-and-pinion gear

Automotive; Automobile

Any gearset consisting of a small gear (the pinion gear) which turns a large-diameter annular gear (the ring gear).

Roadholding

Automotive; Automobile

The ability of a car to grip the pavement. Technically described as "lateral acceleration," because cornering is actually a continuous deviation from a straight path. Measured in gs.

The amount of power at the driving wheels needed to move a car down the road at a steady speed. This power varies according to the car's speed, aerodynamic drag, and mechanical friction, as well as ...

Roll

Automotive; Automobile

The rotation of a car's body about a longitudinal axis. Also less accurately called "sway" or "lean," it occurs in corners because the car's centre of gravity is almost always higher than the axis ...

Rubber-isolated crossmember

Automotive; Automobile

A laterally aligned structural member that is attached to the body or the frame via vibration-absorbing rubber isolators. By bolting suspension or driveline components to such crossmembers, ...