DICTIONARY OF AUTOMOTIVE TERMS - "Is"

ISC

Acronym for Idle speed control

ISC motor

Acronym for Idle speed control motor

ISDT

Acronym for International Six Day Trial (a motorcycle race)

Island

See
Central median island
Ghost island
Median island
Traffic island

ISO

Acronym for International Standards Organization

Isobutane

(C₄H₁₀) A normally gaseous branch-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of -17.8°C. It is extracted from natural gas or refinery gas streams.

Isobutylene

(C₄H₈) An Olefinic hydrocarbon recovered from refinery processes or petrochemical processes.

ISO flare

The type of brake line flare made popular by the International Standards Organization

Isohexane

(C6H14) A saturated branch-chain hydrocarbon. It is a colorless liquid that boils at a temperature of 69°C.

Isolastic

Name for an engine/swingarm rubber mounting system used by Norton on its early Commando motorcycles

Isolated operation

A mode of operation in which the fuel cell power plant is separated, electrically and mechanically, from all other sources of electrical energy.: (Sell also GRID ISOLATED).

Isolate the battery

See
Disconnect the battery

Isolation

This occurs when the anti-lock brake system isolates one or more wheel brakes from hydraulic pressure produced by the master cylinder, allowing the ABS to take over control of braking pressure from the driver

Isolator

An item that prevents interaction between two components

Isomerization

A refining process that alters the fundamental arrangement of atoms in the molecule without adding or removing anything from the original material. Used to convert normal butane into Isobutane: (C₄), an alkylation process feedstock, and normal pentane and hexane into isopentane: (C5) and isohexane: (C6), high-octane gasoline components.

Iso-octane

Liquid hydrocarbon used to determine the octane rating of fuels; (see also octane number)

Isopentane

A saturated branched-chain hydrocarbon: (C5H12) obtained by fractionation of natural gasoline or isomerization of normal pentane.

Also see
Natural Gasoline And Isopentane

Isothermal

Changes of volume or pressure under conditions of constant temperature.

Isothermal expansion and contraction

Action which takes place without a temperature change.

Isotopes

Forms of the same chemical element that differ only by the number of neutrons in their nucleus. Most elements have more than one naturally occurring isotope. Many isotopes have been produced in reactors and scientific laboratories.

Isotta-Fraschini

A vehicle brand of which the 1925-1948 models are Classic cars.

ISS

Acronym for Input Shaft Speed

ISTEA

Acronym for Intermodal Surface Transportation Efficiency Act of 1991

Isuzu

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Isuzu

An automobile manufacturer (Isuzu Motors Ltd.) of SUV, truck, and cars established in Japan in 1937 and includes the following Amigo (1989-2000), Ascender (2003-07), Axiom (2002-04), Hombre (1996-2000), i280 Pickup (2006), i290 Pickup (2007), i350 Pickup (2006), i370 Pickup (2007), I-Mark (1974-2000), Impulse (1981-92), Oasis (1996-99), Pickup (19__-95), Rodeo (1991-2004), Rodeo Sport (2001-03), Stylus (1991-93), Trooper (1991-2002), Trooper II (19__-90), and VehiCROSS (1999-2001)