DICTIONARY OF AUTOMOTIVE TERMS - "Ge"

Gear
Gear

Gear

Wheel-like part with teeth cut into the rim. When one gear meshes with another gear, it causes the second gear to drive the other and in this way transmits power. When the gears are different sizes (different number of teeth on each gear) the mechanical average is changed.
Also see

Gear arm
See
Gearbox
The device in the Drivetrain consisting of an Input shaft, a system of gears, and an Output shaft that multiplies engine Torque. A Manual transmission consists of a Clutch assembly plus a gearbox; and Automatic transmission generally consists of a Torque converter plus gearbox.
Also see
Gearbox input shaft
A shaft which transmits power from the clutch to the gearbox
Gearbox output shaft
A shaft which transmits the drive out of the gearbox
Gearchange
A British term for the process of changing gears or shifting gears.
Also see
Gearchange cables
British term for Shift cables used to operate gears in some transmissions. In most vehicles rods and joints are used because cables tend to stretch.
Gearchange linkage
A system of rods and joints used to operate the gearbox. British term for Shifter linkage
Gearchange mechanism
A system of rods and joints used to operate the gearbox. British term for Shifter mechanism
Gear changer
See
Gear differential
See
Gear down
To shift into a lower gear
Gear drive
See
Geared
See
Geared Speed
The calculated vehicle speed at the engine's governed rpm in each transmission gear, or (commonly) in top gear.
Gear grease
A heavy liquid Grease that fills the Differential and Manual transmission to lubricate the gears. Also called differential grease.
Gearhead
  1. A person with a strong interest in all things mechanical
  2. The portion of a gearmotor which contains the actual gearing that converts the basic motor speed to the rated output speed
Gear indicator
A display which shows the particular Transmission gear that has been selected.
Gearing
  1. The combination or system of gears or sprockets designed to transmit power.
  2. The ratio between the drive gear and the driven gear.
Also see
Gearjammer
Trucker slang for a speeding trucker as in "We got us a real gearjammer in that eastbound lane."
Gear knob
British term for the knob at the end of a lever, i.e., Shifter knob
Gear lever
A device which is attached to the side of a steering column or to the center console which will allow the operator to change the gears of the transmission. Also called shift lever.
Also see
Gear oil
A heavy oil which is rated at 80 to 100 weight Viscosity used in enclosed units containing gears. This oil infrequently or rarely needs changing.
Also see
Gear puller
Gear puller

Gear puller

A tool with two or more jaws and pressure screw for pulling off gears, bearings, pulleys, etc.
Also see

Gear pulser
A term used by some manufacturers, including Subaru, for the Tone rings
Gear pump
The simplest oil pump with two gear wheels.
Also see
Gear range
Choice of gears in an automatic transmission. The typical gear ranges are P - Park, R - Reverse, N - Neutral, D -Drive, L - Low
Gear ratio
  1. The relationship between the number of turns made by a driving gear to complete one full turn of the driven gear. If the driving gear turns four times to turn the driven gear once, the gear ratio would be 4 to 1. In most instances, the gear ratio is not even like 41 because the same teeth would be meshing with each other. Thus a ratio of 4.111, for instance, means that a particular tooth on one gear may eventually mesh with every one of the teeth on the other gear. Changing the tire size will change the effective gear ratio.
  2. A number, usually expressed as a decimal fraction, representing how many turns of the input shaft cause exactly one revolution of the output shaft. Applies to transmissions, power takeoffs, power dividers and rear axles. Example If 2.5 revolutions of an input shaft cause one revolution of the output shaft, the gear ratio is 2.51.
Also see
Gear selector
The device (e.g., lever or rod or pushbutton) for choosing the desired automatic Transmission gear. Located on the side of the steering column, in a console, or on the floor between the front seats.
Also see

Gear selector indicator
An indicator positioned in the instrument cluster or on the center console shift gate indicating which gear has been selected in an automatic transmission
Gearset
A group of two or more gears within a transmission used to transmit power.
Also see
Gear shaft
See
Gearshift
Gearshift

Gearshift

A device which allows the operator to move the Transmission gears into various configurations. Most often the gearshift is located on a lever on the Steering column or on a lever on the floor between the Driver and front passenger. Some older Chryslers had Pushbutton controls on the Dash. On motorcycles, the shift lever is located on the left or right side and operated by the foot.
Gearshifter
Gearshifter

Gearshifter

A device which allows the operator to move the Transmission gears into various configurations. Most often the gearshift is located on a lever on the Steering column or on a lever on the floor between the Driver and front passenger. Some older Chryslers had Pushbutton controls on the Dash. On motorcycles, the shift lever is located on the left or right side and operated by the foot.
Gearslammer
Trucker slang for a trucker who's known to accelerate and decelerate a lot as in "Better watch out there's a real gearslammer in the granny lane."
Gearstick
A British term for the stick used by the driver to change gears. Also called a shifter or shift lever.
Gear tooth
The indentation on the edge of a gearwheel
Gear train
A system of gears that transmits drive from one shaft to another.
Also see
Gear transmission
See
Gear-type oil pump
Gear-type oil pump

Gear-type oil pump

The simplest oil pump with two gear wheels. Compare Rotor-type oil pump.
Gear up
To shift to a higher gear
Gearwheel
A gear
Gel
  1. A substance like jelly.
  2. To become like jelly
Also see
Gel cell battery
A battery where the acid is in the form of a gel so that in the event of a spill, acid does not leak out -- especially recommended for electric scooters and power chairs
Gel coat
  1. A thin layer of plastic Resin covering Fiberglass panels.
  2. An outer layer of GRP (glass reinforced plastic) moldings which gives a smooth surface that may be colored
Gel-coat resin
A resin similar to general lay-up resin but with an additive to make it thixotropic, i.e., it does not run down vertical surfaces; used to make the gel coat in moldings
Gelling drier
A drier for PVC sealants
Gel saddle
A bicycle or motorcycle seat that has gel placed in certain areas to increase comfort.
GEM
Acronym for Generic Electronic Module
Gemmer steering
A cam-and-roller steering
GEN
Acronym for Generator (Alternator)
General Agreement on Tariffs and Trade
(GATT) Signed in 1947, the GATT was a formal multilateral agreement aimed at expanding and liberalizing world trade. The World Trade Organization which is the successor to the GATT came into existence on January 1, 1995.
General cargo
Non-bulk cargo. The cargo may be of various kinds
General corrosion
In contrast to pitting, a type of corrosion which affects the entire surface of a metal
General Freight cargo
Processed items, packaged or in some way containerized, and fairly closely packed.
Generalized Preferential Tariff
(GPT) system of non-reciprocal tariff preferences for the benefit of developing countries. It grants duty-free or preferential entry to imports for eligible developing countries up to a certain dollar value or import percentage limit.
General mess of crap
Trucker slang for GMC trucks by Volvo/White as in "I used to drive a general mess of crap."
General Motors
General Motors

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General Motors

(GM) or (GMC) The largest American vehicle manufacturer including: It has subsidiaries and associates in Britain (Vauxhall), European continent (Opel, Fiat, and Saab), Australia (Holden), Asia (Subaru, Fuji, Suzuki)
General purpose lacquer thinner
A type of thinner that may be used for both lacquers and synthetic enamels without causing lifting or other paint faults
General purpose pliers
Any kind of typical multi-purpose pliers.
Generate
To produce.
Generating Plant
See
Generator
  1. A mechanism which generates or produces some substance, i.e., electric generator, acetylene generator.
  2. An Electromagnetic device for producing Direct current electricity. It was replaced by an Alternator in the early '60s. Its problem was that a generator Recharged the Battery only at high Speeds. The British call it a dynamo.
Also see
Generator capacity
The maximum output, commonly expressed in megawatts (MW), that generating equipment can supply to system load, adjusted for ambient conditions.
Generator nameplate capacity
The maximum rated output of a generator under specific conditions designated by the manufacturer. Generator nameplate capacity is usually indicated in units of kilovolt-amperes (kVA) and in kilowatts (kW) on a nameplate physically attached to the generator.
Genset
Abbreviation for Generator set, a generating system comprising a combustion engine driving an electrical generator.
Geo
Geo

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Geo

A model of automobile manufactured by Suzuki for GM including the following models Metro (1989-97), Prizm (1989-97), Spectrum (1988-89), Storm (1990-93), Tracker (1989-97)
Geographic Information System
(GIS) A system of information, organized in layers that can be applied to a specific geographic location to such things as population density, traffic volume, business development, etc.
Geometry
The design, layout, or arrangement of parts.
Also see
Georges Irat
A vehicle of which models built between 1925 and 1948 are classic cars
Georgia overdrive
Trucker slang for neutral gear as in "You put her in Georgia overdrive on the downstroke."
Geotextile
Generic term for material used in several different roadway applications.
Getting out
Trucker slang for being heard on the CB as in "Can anyone tell me if my CB is getting out?"

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