- A/D
- Acronym for Analog to Digital Converter
- Adapter (Also spelled adaptor)
-
- A device used to connect two different types or sizes of electrical terminals
- A Connector which links two items usually of dissimilar structure or size.
- A Bracket on Disc
brakes on which the Caliper mounts, or slides
or floats.
- Bolted to the Spindle or Steering knuckle, or the Rear axle or Control arm.
- Adapter carburetor
- A device attached to a gasoline carburetor which permits an internal combustion engine to run either on gas or liquefied petroleum gas (LP gas).
- Adapter plate
- A flat piece of material which is placed between two different parts in order to
join them.
Also see
- Adaptive control
-
- A control device which learns from repeated input so that under particular circumstances the control gives the learned response.
- The ability of a control unit to adapt its closed-loop operation to changing operating conditions, such as engine wear, fuel quality or altitude, to maintain proper air-fuel mixture control, ignition timing or idle rpm. Also referred to as self-learning
- A/D converter
- Circuitry to convert analog information into numeric form for use in a digital computer
- Addition agent
- A substance added to the electrolyte in an electrodeposition process to improve the formed deposit
- Additive
- A substance (liquid or powder) which is added to
Gasoline or oil and is intended to improve the
characteristics of the original product.
Also see
- ADEFA
- Acronym for Asociacion de Fabricas de Automotores (Argentina).
- ADF
- Acronym for Automatic direction finding.
- Adhere
- To stick or be glued to something.
- Opposite to abhere
- Adherend
-
- Each surface that is to stick to another
- A material which is stuck together by an adhesive.
- Adhesion
-
- The force which causes two surfaces to stick together
- The sticking together of surfaces in contact with each other
- The bonding of materials with adhesives (glues, cements, binders, etc), in which the intermolecular forces between Adhesive and adherend provide the bonds.
- The sticking together of two metals as a result of compressing them together
- The sticking together of two dissimilar metals because of electrical transference of electrons.
- The ability of paint, Primer, or glue to stick to the surface to which it is applied.
- The ability of a tire to grip the surface of the road.
- Mutual forces between two magnetic bodies linked by magnetic flux, or between two charged non-conducting bodies which keeps them in contact
- Intermolecular forces which hold matter together, particularly closely contiguous surfaces of neighboring media, e.g., liquid in contact with a solid.
- Adhesive
-
- A substance (like glue) that is used to join two substances.
- An adhesive must bond both mating surfaces through specific adhesion (molecular attraction), through mechanical anchoring (by flowing into holes in porous surfaces), or through fusion (partial solution of both surfaces in the adhesive or its solvent vehicle).
- Various descriptive adjectives are used with the term adhesive to
indicate types, such as
- a. physical form
- Liquid adhesive, film adhesive, etc.
- b. composition
- Resin adhesive, rubber adhesive, silicone based, mastic, etc.
- c. end use
- Metal-to-metal adhesive, plastic adhesive, rubber adhesive
- d. application
- Sprayable adhesive, hot melt adhesive, etc.
- Agent for joining materials by adhesion, usually polymeric material.
- May be based on thermoplastic resin (e.g., polystyrene cement) or thermoset (e.g., epoxy resin).
- Viscosity is important for gap filling (high, as in epoxies) or surface penetration (low, as in cyano-acrylates).
- Also called binder, cement, or glue
- A substance (like glue) that is used to join two substances.
- Adhesive bonding
- The union of two materials with some chemical adhesive between them
- Adhesive film
- A thin layer of dried Adhesive.
- Also describes a class of adhesives provided in dry film form with or without reinforcing fabric and which are cured by means of heat and pressure
- Adhesive tape
- A tape with a sticky substance on one side.
- It usually comes in a roll of various widths.
- Sometimes used to insulate electrical wires (e.g., electrical tape) or to wrap a larger object (e.g., duct tape).
- Often the non-sticky side is shiny (but not always) to distinguish it from the sticky side.
- Adhesive weight
- Lead wheel weights which have a sticky backing.
- It comes in strips and is applied to a wheel rim to balance the wheel.
- Also called tape weight.
- Adiabatic
- A property of being able to maintain heat evenly.
- It does not gain any heat or lose it
Also see
- Adiabatic change
- Without changing the temperature of an enclosure or its surroundings, there is a change in the volume and pressure of the contents of the enclosure.
- Adiabatic efficiency
- The ratio of that work required to compress a gas adiabatically to the work actually done by the compressor piston or impeller.
- Adiabatic engine
- An engine which is very efficient in transferring combustion heat to those parts
of the engine which are being cooled by the flow of anti-freeze coolant -- thus
maintaining an even temperature of the engine.
- In this way the engine is warm enough for efficient running and it does not overheat.
- Adjust
- The action of putting something into its proper alignment or position.
- It may involve one component (e.g., He adjusted the gasket to fit properly.) or a series of components (e.g., He adjusted the poor idle -- might mean he set the ignition timing, adjusted the carburetor screws, changed the choke setting, cleaned or replaced the spark plugs, etc.)
Also see
- Adjustable
- A characteristic of something that can be changed, removed, or given different
properties.
Also see
- Adjustable bottom bracket
-
A component of a bicycle through which the crank is mounted.
- It has two bearing cups on either side.
- One cup is fixed in place while the other is removable or adjustable.
- This is the older type of Bottom bracket before sealed cartridge bottom brackets became prevalent.
- The adjustable bottom bracket requires fixed and adjustable cup tools to properly tension the bearings.
- The bearings are not sealed, but they are easily accessible for cleaning and lubrication.
- Adjustable cup
- The left-hand Cup in a Bottom bracket of a Bicycle, used in adjusting the Bottom bracket bearings and removed during Bottom bracket Overhaul. The other cup is the Fixed cup.
- Adjustable off-idle air bleed
- An air adjustment screw
- Some emissions-era Rochester carburetors have a separate air passage to bleed air past an adjustment screw into the idle system.
- This screw is preset by the factory to produce precise off-idle air/fuel mixture ratios to meet emission-control requirements.
- Adjustable part throttle
- (APT) a supplementary circuit on some carburetors
- The APT can be adjusted to control part-throttle mixtures more accurately than a fixed orifice.
- The APT detours around the main jet, going directly from the float bowl to the discharge nozzle feed well.
- Adjustable-port proportioning valve
- Air and fuel valves for oil or gas burners, motor operated in unison by automatic temperature-control equipment.
- Adjustable rocker arm
- A type of rocker arm with an adjusting nut that can be tightened or loosened to adjust valve lash.
- Adjustable shock absorbers
- Shocks with adjustable jounce and rebound characteristics can be stiffened to compensate for wear or to fine tune a suspension for a particular application such as rough roads, heavy loads, or racing.
- Adjustable shocks
-
A type of Shock absorber which can compensate for varying needs of stiffness or softness.
Click to supersize
Adjustable shock absorber- Manual types (especially on motorcycles) require that you physically make the adjustment from one Level to another by rotating securing rings.
- Automatic types are controlled by a computer as it senses particular changes in road condition.
- Adjustable spanner
- British term for Adjustable wrench.
- Adjustable speed drives
- Drives that save energy by ensuring the electric motor's speed is
properly matched to the load placed on the motor. Terms used to
describe this category include
- Polyphase motors
- motor oversizing
- motor rewinding
- Adjustable variable exhaust port
- A device used on Two-stroke engines which automatically alters or varies the Exhaust port size.
- Adjustable wrench
-
A Crescent® wrench or Pipe wrench.
Adjustable Wrench
- A tool which has a fixed jaw and a movable jaw which is controlled by a spiral gear or slide.
- It is used to install or remove bolts and nuts of various sizes.
- The wrench itself comes in a variety of lengths and jaw sizes.
- A crescent wrench has smooth jaws while a pipe wrench has serrated jaws.
- British term is adjustable spanner
- Adjusted electricity
- A measurement of electricity that includes the approximate amount of energy used to generate electricity. To approximate the adjusted amount of electricity, the site-value of the electricity is multiplied by a factor of 3. This conversion factor of 3 is a rough approximation of the Btu value of raw fuels used to generate electricity in a steam-generation power plant.
- Adjuster
- A device for moving something into the correct position or into a different position -- usually a better position.
- Adjuster cam
- A device for moving the shoes on drum brakes closer to the drum itself so that there is less travel when the brakes are applied.
- Adjuster mechanism
- A mechanism used with Drum brakes that maintains the proper Lining clearance as wear takes place.
- Adjusting cams
- Eccentric bolts that adjust the shoe-to-drum clearance. Located in the Backing plate of Drum brakes, the cam positions the shoe(s) closer to the drum. Some adjust automatically and some manually.
- Adjusting gauge
- A tool used to determine the small distance between two parts so that they can be brought within specifications.
- Adjusting screw
- A small screw usually found on carburetors, brakes, or headlights which change the way something operates, such as increasing or decreasing the amount of fuel entering the engine; or changing the idle speed; or tightening up the brakes; or changing the setting on rocker arms; or the level of the headlights.
- Adjusting shim
- A thin washer or plate which reduces or increases the clearance between two components (depending upon where they are placed). While some valves are adjusted by screws on the rocker arm, others are set by inserting a shim to make the same adjustment.
- Adjusting sleeve
- A small threaded cylinder on the end of the tie rod which shortens or lengthens the rod to make changes in the Toe-in and Toe-out.
- Adjustment
-
- Changing or modifying the position or alignment of two components.
- The distance of travel that a component has.
- Adler
- The brand name of a vehicle. With required application the 1928-1934 Standard 8 models are classic cars.
- Admission
- The point in the working cycles of a steam or internal-combustion engine at which the intake valve allows entry of the working fluid into the cylinder.
- A-Dolly
- This converter dolly has an "A" shaped
drawbar that joins at a single connection point to the trailer ahead of it. These
dollies can have one or more axles and are the most common in use.
Also see
- Adopt-A-Highway program
- A volunteer program organized to keep roads and highways litter-free.
- Groups, organizations, or individuals volunteer to clean a defined stretch periodically.
- Adsorbent
- Substance with the property to hold molecules of fluids without causing a chemical or physical change.
- Adsorption
- The bonding that takes place when a gas or vapor comes into contact with a solid. The opposite is Desorption.
- ADT
- Acronym for Average Daily Traffic -- The total traffic volume during a given period (from 1 to 364 days) divided by the number of days in that period.
- Ad Valorem
- Latin for "according to value" indicating that the freight rate is determined as a fixed percentage of the value of articles being shipped.
- Advance
-
- The act of changing the Ignition
timing so that the Spark occurs earlier in
the cycle.
- The opposite is Retard.
- It may refer to the device which makes this adjustment.
- The length of railway track beyond a signal which is covered by that signal
- The act of changing the Ignition
timing so that the Spark occurs earlier in
the cycle.
- Advance curve
- As the speed of the engine increases the ignition advance also increases.
- On paper, a pattern is drawn as a curve to represent this relationship.
- Advanced
-
- A condition in which something occurs early.
- A product which is on the cutting edge of technology and shows the latest in new ideas and concepts.
- Advanced Charge
-
- Pre-paid shipping costs paid by the shipper
- Freight costs advanced by one transportation company to another.
- Advance spring
-
Located in the Distributor, one of two small springs which pulls the advance weight back as the engine slows down.
Advance spring
- Advance weight
-
One of two small weights located in a centrifugal advance assembly of a distributor.
Advance weight
- Advice Of Shipment
- Information sent ahead of the shipment indicating its impending arrival.
- Sometimes supplied with a copy of the invoice and/or the bill of lading.
- Advisory Cycle Lane
- Cycle lane, marked by a broken line, into which it is not an offence for other vehicles to enter.