TIAGO

1.05L REVOTORQ ENGINE

E. EXHAUST GAS RECIRCULATION SYSTEM (

EGR)

EGR System Schematic Layout :



Description :

The Exhaust Gas Recirculation

(EGR)

sys-

tem is designed to reduce the amount of Oxides of

Nitrogen

(NOx)

created by engine during high com-

bustion 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 con-

trolled by ECU instantaneously based on

environmental and engine conditions.

The EGR system of the vehicle is con-

trolled by the Engine EMS ECU.

The EGR System consists of the following

components

1. ECU

2. EGR Valve

3. EVRV