DICTIONARY OF AUTOMOTIVE TERMS - "Eg"

EGC

Acronym for exhaust gas check valve

Egg-crate grille

A radiator grille with crisscrossing bars forming gaps which are more or less square. One of the distinctive characteristics of Cadillac cars

EGI

Acronym for electronic gasoline injection

EGO

Acronym for exhaust gas oxygen sensor

EGOR

Acronym for EGO Signal Return (Ford)

EGR

Acronym for Exhaust-gas recirculation. Introduces exhaust gas into inlet system to reduce NOx Enhanced. It shows EGRVR percentage engaged.

Also See
negative transducer EGR valve
vacuum modulated EGR

EGRB

Acronym for EGR Boost Sensor

EGRC

Acronym for EGR control solenoid

EGRC-BPT

Acronym for EGR Control Back Pressure Transducer

EGR control solenoid

(EGRC) energizes to allow manifold vacuum to the EGR gas temperature.

EGR function control

A device which controls or modifies EGR valve position

EGR function sensor

A device that identifies if the EGR system is functioning properly

EGR Monitor

Acronym for OBDII EGR Test

EGRPS

Acronym for EGR Valve Position Sensor (Mazda)

EGRT

Acronym for Exhaust Gas Recirculation Temperature -- Replacement term for EGTS

EGR TVV

Acronym for Exhaust Gas Recirculation Thermal Vacuum Valve

EGRV

1. Acronym for EGR vent solenoid
2. Acronym for Exhaust Gas Recirculation Vent Solenoid

EGR vacuum

A vacuum source above the closed throttle plate; used for control of ported EGR valves. Vacuum is zero at closed throttle

EGR valve

1. A part of an EGR system mounted on or near the inlet manifold and controlled by inlet manifold vacuum, which is usually closed at idle and low speeds, but opens during acceleration, admitting exhaust gas to the inlet manifold. Most EGR valves are of the single diaphragm type, some are dual diaphragm valves connected to two separate vacuum sources to more closely match EGR function to engine loads; for the same purpose, EGR valves are frequently governed by additional regulating devices.
2. A valve used to introduce exhaust gases into the intake air stream. There are several types.

Also See
integral backpressure transducer EGR valve
ported EGR valve
electronic EGR valve
valve and Transducer assembly
negative transducer EGR valve

EGR valve position sensor

(EVP) A potentiometric sensor used in electronically controlled EGR system. Sensor wiper position is proportional to EGR valve pintle position, which allows electronic control assembly to determine actual EGR flow at any point in time

EGR vent solenoid

(EGRV) electrical solenoid that normally vents EGRC vacuum line. When EGRV is energized, EGRC can open the EGR valve

EGR venturi vacuum amplifier

A device that uses a relatively weak venturi vacuum to control a manifold vacuum signal to operate the EGR valve. Contains a check valve and relief valve that open whenever the venturi vacuum signal is equal to or greater than manifold vacuum

EGTS

Acronym for Exhaust Gas Temperature Switch A term replaced by EGRT