Dictionary of Automotive Terms Abbreviations

DICTIONARY OF AUTOMOTIVE TERMS - "Ev"

EV: Acronym for Electric Vehicle -- A vehicle powered by one or more electric motors rather than by an internal combustion engine. The most common source of electricity is chemical storage batteries.

Evacuate

To remove by pushing out.
To create a vacuum in an air conditioning system to remove all traces of air and moisture.
To pump the air, moisture and foreign material out of the system with a vacuum pump. Also called Pump down

Evacuated-tube collector: A collector in which solar thermal heat is captured by use of a collector fluid that flows through an absorber tube contained inside an evacuated glass tube.

Evacuation: Removal of air (gas) and moisture from a refrigeration or air conditioning system.

EVAP: Acronym for Evaporative emission control system -- Prevents the escape of fuel vapour to the atmosphere

Evaporation: The process of changing from a liquid to a vapor, such as boiling water to produce steam; evaporation is the opposite of Condensation. Heat is absorbed in this process of evaporation. Evaporation can occur at various temps, depending on the liquid and the pressure. Also refers to Solvents in the paint escaping to the air.
Also See
Early fuel evaporation system
Latent Heat Of Evaporation

Evaporation control system: (EVAP or ECS) A system for reducing evaporative emissions by means of a sealed fuel tank, a vapour-liquid separator, a three-way valve, an activated carbon filter, and a network of interconnecting hoses. A system used to prevent the escape of gasoline vapors to the atmosphere from the fuel tank and Carburetor. Also called "evaporative Emission Control system"

Evaporative condenser: Device which uses open spray or spill water to cool a condenser. Evaporation of some of the water cools the condenser water and reduces water consumption.

Evaporative emission control system: (EVAP pr EEC) A system for reducing evaporative emissions by means of a sealed fuel tank, a vapour-liquid separator, a three-way valve, an activated carbon filter, and a network of interconnecting hoses. Also called evaporation control system

Evaporative emissions: Vapours or fumes not emitted by the exhaust system, but escaping from the fuel tank, Carburetor and Crankcase, and accounting for about 40% of hydrocarbon emissions released by a gasoline engine without emission controls

Evaporative emission shed system: (EESS) a Ford evaporative emission control system introduced in 1978

Evaporative losses: Vapours or fumes not emitted by the exhaust system, but escaping from the fuel tank, Carburetor and Crankcase, and accounting for about 40% of hydrocarbon emissions released by a gasoline engine without emission controls

Evaporator: The unit in an air conditioning system used to transform Refrigerant from a liquid to a gas. It is at this point that cooling takes place as heat is removed from the air. An air conditioning system component through which cool, liquid Refrigerant is pumped at a reduced pressure. When heated by the warm passenger compartment air being forced through the evaporator, the Refrigerant evaporates, drawing heat from the air as it passes over the cooling fins. Opposite to condenser.
Also see
Defrosting Type Evaporator
Direct Expansion Evaporator
Dry Type Evaporator
Flooded Evaporator
Frosting Type Evaporator
Nonfrosting Evaporator
Pressure Regulator Evaporator
Shell-and-tube Flooded Evaporators

Evaporator, dry type: Evaporator in which the Refrigerant is in the liquid droplet form.

Evaporator equalized valve in receiver: (EEVIR) A unit similar in design to a valve-in-receiver type, except that it has an equalizer port of the expansion valve that allows for faster reaction time

Evaporator fan: Fan which increases airflow over the heat exchange surface of evaporators.

Evaporator pressure regulator: (EPR) Automatic pressure regulating valve mounted in suction line between evaporator outlet and compressor inlet. Purpose is to maintain a predetermined pressure and temperature in the evaporator.

Evaporator pressure regulator valve: (EPR) An evaporator temperature control device regulated by back pressure. Used on an older Chrysler Corp. system. Located in the compressor inlet. A system using this device is referred to as an EPR system

Evaporator temperature regulator valve: (ETR) A temperature-regulated evaporator temperature control device used on some early model Chrysler Corp. systems

Evil kenivel: Trucker slang for a motorcycle policeman as in "There's an Evil Kenivel taking pictures at the 38."

EVO

Evolution: (Evo) When Harley-Davidson began using aluminum to build its cylinder jugs, it called this new engine the Evolution

EVR