Nexon Service Manual

1.5L REVOTORQ ENGINE

E. EXHAUST GAS RECIRCULATION SYSTEM (EGR)

EGR System Schematic Layout

Description

The Exhaust Gas Recirculation

(EGR)

system is

designed to reduce the amount of Oxides of

Nitrogen

(NOx)

created by engine during high

combustion temperatures. NOx is formed in high

concentration whenever combustion temperature

exceeds the specified limit.

In EGR system a part of exhaust gas from the

exhaust manifold is made to mix with the fresh air

going into the engine. This is done in part load and

part speed conditions thus reducing the amount of

harmful pollutant

(NO

)

by reducing the peak

combustion temperature.

The EGR quantity and its duration is controlled by

ECU instantaneously based on environmental and

engine conditions.

The EGR system of the vehicle is controlled by

the Engine EMS ECU.

The EGR System consists of the following

components

1. ECU

2. EGR Valve

3. EVRV