DICTIONARY OF AUTOMOTIVE TERMS - "Ni"

NIASE:

Acronym for "National Institute for Automotive Service Excellence" (usually referred to as ASE)

Nibbler:

A tool used to cut sheet metal without deforming the sheet or causing a burr; works upwards, leaving the hands above the material; allows circular and straight cuts

Nibbling:

The jerking action which occurs in a vehicle, due to the distortion within some tires as they are forced to traverse pavement ridges at a slight angle.

Nibs:

Small indentations on the edge of the brake shoe lining table that contact the shoe support pads on the backing plate.

Ni-Cad:

A rechargable battery used in many high power light systems. Benefits include reasonable weight, good run times, and solid long-term durability.

Ni-Cad rechargable battery:

Used in many high power light systems. Benefits include reasonable weight, good run times, and solid long-term durability.

NiCaSil:

Nickel-silicon plating used, for example, on the cylinder walls of certain light-weight high-performance engines to reduce weight and friction and improve heat transfer. May be spelled "nikasil."
Also See:
scanimet

Nichrome:

A metallic compound containing nickel and chromium, used in making high resistances

Nickel metal hydride:

(NiMH) A rechargable battery used in many light systems. Benefits include light weight, good run time for its weight, and reasonable long term durability

Nickel plating:

Thin coating of nickel deposited on a surface by electrolysis

Nickel steel:

Nickel is alloyed with steel to form a heat and corrosion resistant metal

Nikasil:

See NiCaSil

NIOSH:

Acronym for "National Institute for Occupational Safety and Health"

Nipple:

1. A fitting which is threaded to the end of a spoke. The nipple is seated in the holes of the rim and receive the threaded end of the spoke. The nipple has a slot at the top so that it can be quickly tightened a little, but the other end of the nipple has flat or square sides so that a spoke wrench can be applied to tighten the spoke into the nipple
2. A small, one-way valve used for injecting grease into a bearing.
   Also See:
   grease nipple
3. A short, steel tube holding a thin rubber or plastic tube used for bleeding hydraulic fluid

Nippy:

A small and relatively powerful motor vehicle.

Nissan:

A model of automobile manufactured in Japan
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Nissan Altima:

A model of automobile manufactured by Nissan in Japan
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Nissan Maxima:

A model of automobile manufactured by Nissan in Japan
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Nissan Pathfinder:

A model of SUV manufactured by Nissan in Japan
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Nissan Pulsar:

A model of automobile manufactured by Nissan in Japan
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Nissan Sentra:

A model of automobile manufactured by Nissan in Japan
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Nissan Stanza:

A model of automobile manufactured by Nissan in Japan
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Nissan SX:

A model of automobile manufactured by Nissan in Japan
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Nissan Z:

A model of automobile manufactured by Nissan in Japan
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Nitriding:

The hardening of steel by heating it for several hours in ammonia gas. Used on crankshafts

Nitrile rubber:

Also known as Buna-N rubbers, these adhesives have high strength, excellent aging properties and good chemical resistance, including resistance to both aliphatic and aromatic solvents and to most platicizers which cause bond failure of other adhesives. Nitrile has excellent resistance to petroleum oils and gasolines, to mineral and vegetable oils, but poor resistance to oxygenated solvents like acetone. It has good heat resistance and is the most commonly used adhesive material in applications exposed to hot oils

Nitrocellulose paint:

A paint which gives a deep, lustrous finish. It is used on old Jaguars but was prone to crazing and checking. Because spraying with nitrocellulose paints creates environmental problems, they are no longer used for volume cars

Nitrogen:

See oxides of nitrogen

Nitrogen dioxide:

Mildly poisonous gas (N02) often found in smog or automobile exhaust fumes.

Nitrogen oxide:

See nitrogen oxides.

Nitrogen oxides:

(NO_x) In the combustion process, nitrogen from the air combines with oxygen to form nitrogen oxides such as nitric oxide and nitrogen dioxide. Nitric oxide is the main oxide of nitrogen emitted in raw exhaust gas, typically 90%; nitric oxide and nitrogen dioxide are severely toxic gases: without emission controls, the exhaust of an spark ignition engine contains 0.3-1.5 kg of NO_x per 100 liters of gasoline consumption

Nitrophyl:

A closed cell material that's impervious to gasoline and fuel additives; used as a float material

Nitrous oxide:

(NOx) One of the three basic pollutants found in the exhaust emission of an internal combustion engine. The amount of NOx usually varies in an inverse proportion to the amount of HC and CO.

Nitrous oxide system:

A performance system that injects nitrous oxide into the inlet manifold at the press of a button, thereby introducing a quick dose of extra energy and a burst of power. On a 6-cylinder or V-8 engines, the nitrous oxide system is intended to add up to 250 HP; it consists basically of a pressurized nitrous oxide bottle as used for welding, solenoids, an injector base plate for the carburetor, and steel pipes; the low vaporization temperature of nitrous oxide (-130°F, -90°C) cools the A/F charge, dampening detonation and minimizing stress caused by increased load

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