Search results
Results from the WOW.Com Content Network
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...
Angular inertia is an integral over the square of the distance from the center of gravity, so it favors small cars even though the lever arms (wheelbase and track) also increase with scale. (Since cars have reasonable symmetrical shapes, the off-diagonal terms of the angular inertia tensor can usually be ignored.) Mass near the ends of a car ...
The distance "d i" is the sum of the measured limit line setback distance—which is typically regulated by a Manual on Uniform Traffic Control Devices, at often between 4 and 30 feet in the United States [134] [135] [136] —and the crosswalk, parking lane, and road shoulder width.
FMVSS No. 116: [18] Motor vehicle brake fluids; FMVSS No. 117: [19] Retreaded pneumatic tires; FMVSS No. 118: [20] Power-operated window, partition, and roof panel systems; FMVSS No. 119: [21] New pneumatic tires for vehicles other than passenger cars; FMVSS No. 120: [22] Tire selection and rims for motor vehicles other than passenger cars
Traditionally, these weights have been made of lead; it is estimated that up to 500,000 pounds (230 t) of lead, having fallen off car wheels, ended up in the environment. [8] According to the US Environmental Protection Agency , worldwide these total more than 20,000 tonnes of lead annually, [ 9 ] and therefore the use of less-toxic materials ...
Vehicle dynamics is the study of vehicle motion, e.g., how a vehicle's forward movement changes in response to driver inputs, propulsion system outputs, ambient conditions, air/surface/water conditions, etc. Vehicle dynamics is a part of engineering primarily based on classical mechanics.
The terms "active" and "passive" are simple but important terms in the world of automotive safety. "Active safety" is used to refer to technology assisting in the prevention of a crash and "passive safety" to components of the vehicle (primarily airbags, seatbelts and the physical structure of the vehicle) that help to protect occupants during a crash.
Torsional vibration is the angular vibration of an object - commonly a shaft - along its axis of rotation. Torsional vibration is often a concern in power transmission systems using rotating shafts or couplings, where it can cause failures if not controlled. A second effect of torsional vibrations applies to passenger cars.