TIAGO

1.05L REVOTORQ ENGINE

B. HP PUMP

The High pressure pump delivers in each

operating point the required fuel amount and

controls the rail pressure according to the demand

of the ECU.

HP pumps draws fuel from the fuel tank

through the water Sedimentor and the fuel filter. It

supplies high pressure fuel (up to 1600 bar) to the

injectors. It has got inlet metering valve and in-

built feed pump, integrated pressure limiter and

integrated fuel temperature sensor. This pump is

driven by the engine timing belt and controlled by

EMS ECU based on the various operating

parameters.

C. FUEL RAIL

It is a fuel reservoir where the fuel is

maintained at a pressure of about 1600 bar. The

fuel is pumped into it from the HP pump and gets

delivered to the injectors through the HP lines. It is

also fitted with a high pressure sensor and the

signal is used by EMS ECU to maintain the fuel

pressure.

NOTE

Whenever fuel rail is removed from the

engine, always cover the inlet and outlet openings

of the rail with the protective caps.

D. FULE PRE-FILTER (SEDIMENTER)

The water Sedimenter is a part of the

filtration system. It is fitted in the fuel feed system

to filter the water present in the fuel. It can store

water up to 120cc. The sensor fitted in the

sedimentor gets triggered once the water level

approaches its maximum limit. This trigger is

displayed as a warning in the instrument panel.

For more details on the sensor refer EMS

Section in this group.

E. MAIN FUEL-FILTER

The Fuel filter is fitted as a second

filtering step in the fuel feed system. It is mainly

used to filter out particles that are present in the

fuel.