DICTIONARY OF AUTOMOTIVE TERMS - "Or"

Orange Circle
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Orange peel
A rough paint surface, resembling the skin of an orange caused by the paint spray failing to flow together.
Orbital sander
A flat, cushioned plate covered with abrasive paper, rotated with an elliptical motion by an electric motor and used for fine sanding work like feather edging.
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ORC
Acronym for Oxidation Reduction Converter
Order
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Ore-bulk-oil carrier
A multipurpose ship that can carry ore, dry bulk goods, and oil. Also called OBO ship
Ore carrier
A large ship designed for the transportation of ore.
Organic
  1. Something of chemical compounds that are based on carbon chains or rings and containing hydrogen with or without oxygen, nitrogen, or other elements. The opposite is Inorganic
  2. Pertaining to or derived from living organisms.
Organic Carbon
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Organic Compound
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Organic content
The share of a substance that is of animal or plant origin.
Organic Fraction
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Organic friction material
A friction material having organic binders, substantially formulated with non-metallic fibers.
Organic Gases
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Organic linings
Brake lining material using asbestos as its main ingredient
Organic Matter
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Organization
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Organization for Economic Co-operation and Development
(OECD)
  1. An international organization helping governments tackle the economic, social and governance challenges of a globalized economy. Its membership comprises about 30 member countries. With active relationships with some 70 other countries, NGOs and civil society, it has a global reach. For details about the organization, visit http://www.oecd.org.
  2. An organization whose purpose is to provide its 29 Member countries with a forum in which governments can compare their experiences, discuss the problems they share and seek solutions which can then be applied within their own national contexts. Each member country is committed to the principles of the market economy and pluralistic democracy.
Organization of the Petroleum Exporting Countries
(OPEC) An intergovernmental organization whose stated objective is to coordinate and unify petroleum policies among member countries. It was created at the Baghdad Conference on September 10-14, 1960, by Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. The five founding members were later joined by nine other members: Qatar (1961); Indonesia (1962); Libya (1962); United Arab Emirates (1967); Algeria (1969); Nigeria (1971); Ecuador (1973-1992, 2007); Gabon (1975-1994) and Angola (2007).
Orientation
The tendency of plastic molecules if stretched, to align themselves in the direction of the stress. Molecular orientation leads to Anisotropy of mechanical properties (i.e., having different mechanical properties in different directions). This can be used to advantage in the production of fibers and film or may be the undesirable result of a molding process
Orifice
  1. Opening through which gases flow. It is usually the final opening, or any opening controlled by a valve.
  2. Accurate size opening for controlling fluid flow.
  3. The opening in an orifice cap, orifice spud or other device whereby the flow of gas is limited and through which the gas is discharged.
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Orifice cap
A movable fitting, having an orifice which permits adjustment of the flow of gas by changing its position with respect to a fixed needle or other device. Also called orifice hood
Orifice hood
A movable fitting, having an orifice which permits adjustment of the flow of gas by changing its position with respect to a fixed needle or other device. Also called orifice cap
Orifice spark advance control
(OSAC) a device used by Chrysler to apply vacuum advance over a period of time. By limiting the timing advance rate, NOx is reduced
Orifice spud
A removable plug or cap containing an orifice which permits adjustment of the flow of gas either by substitution of a spud with a different size orifice or by motion of a needle with respect to it.
Orifice tube
Metering device consisting of a restricting tube with inlet and outlet screens.
Also see
Orifice valve
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Orig
Abbreviation for original, as in orig. owner.
Original condition
An older vehicle that has all of its original paint and equipment and has not been restored or modified.
Original equipment
These are the items on a vehicle which came from the manufacturer. It does not include Accessories produced by Aftermarket companies (sometimes called jobber). Generally original equipment parts are the best for the vehicle. Although it must be admitted that some aftermarket products are better quality and may be less money; however the opposite is also true.
Original equipment manufacturer
(OEM)
  1. A generic term that refers to an automobile company or supplier which manufactures the parts used in the original assembly a vehicle.
  2. Manufacturers of equipment (such as engines, vehicles, etc.) that provide the original product design and materials for its assembly and manufacture. OEMs are directly responsible for manufacturing and modifying the products, making them commercially available, and providing the warranty.
  3. A company that provides the original design and materials for manufacture and engages in the assembly of vehicles. The OEM is directly responsible for manufacturing, marketing, and providing warranties for the finished product.
Original equipment manufacturer vehicle
A vehicle produced and marketed by an original equipment manufacturer (OEM), including gasoline and diesel vehicles as well as alternative-fuel vehicles. A vehicle manufactured by an OEM but converted to an alternative-fuel vehicle before its initial delivery to an end-user (for example, through a contract between a conversion company and the OEM) is considered to be an OEM vehicle as long as that vehicle is still covered under the OEM's warranty.
Original finish
The paint applied to vehicle when it is built by the manufacturer.
O ring
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O-ring
An o-ring is a doughnut shaped (annular) rubber or plastic ring which is placed in a Groove and compressed to seal fluid or gas from passing a particular point.
O-ring chains
A drive chain (usually used on motorcycles) which has small neoprene o-rings within the exposed rollers to encircle the pins. The o-rings help to prevent dust from getting in and thus the chain lasts much longer.
Orion
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Orphan bikes
Rare bikes that are no longer in production
ORVR
Acronym for Onboard Refueling Vapor Recovery.
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