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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 ...
Also gas pedal. A throttle in the form of a foot-operated pedal, or sometimes a hand-operated lever or paddle, by which the flow of fuel to the engine (and thereby the engine speed) is controlled, with depression of the pedal causing the vehicle to accelerate. admission stroke See induction stroke. aftermarket air brake 1. A type of brake in which the force that actuates the brake mechanism is ...
A for-hire carrier that is obligated to serve the general public. [21] Company driver Employee of a carrier who is assigned to drive company-owned trucks. [22] Contract carrier A for-hire carrier contracted to one particular shipper. A contract carrier enters into a contract whose terms are negotiated between a specific carrier and specific ...
Fluid bearings are typically quieter and smoother (more consistent friction) than rolling-element bearings. For example, hard disk drives manufactured with fluid bearings have noise ratings for bearings/motors on the order of 20–24 dB, which is a little more than the background noise of a quiet room. Drives based on rolling-element bearings ...
A contract of carriage is a contract between a carrier of cargo or passengers and the consignor, consignee or passenger. [1] [2] Contracts of carriage define the rights, duties and liabilities of parties to the contract, addressing topics such as acts of God and including clauses such as force majeure (removing liability for extraordinary occurrences beyond control of the parties).
A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
A spare part, spare, service part, repair part, or replacement part, is an interchangeable part that is kept in an inventory and used for the repair or refurbishment of defective equipment/units. Spare parts are an important feature of logistics engineering and supply chain management , often comprising dedicated spare parts management systems.
The axle bearings were housed in a box that used oil-soaked rags or cotton (collectively called "packing") to reduce the friction of the axle against the truck frame. When the oil leaked or dried out, the bearings overheated, often starting a fire that could destroy the entire railroad car (and cars coupled to it) if not detected early enough.