NEXON

1.5L REVOTORQ ENGINE

Testing Parameters



Thermostat start open temperature is 86º to

90ºC at 0.1mm travel.



Full open travel of 8 mm (Min.) at temperature

is 100º C



Leakage through main valve at room

temperature and 0.3 kg/cm

is 1500cc/min

MAX.

D. Water Pump

The water pump is a simple centrifugal pump driven

by belt. The pump circulates the engine coolant

when it is driven by the engine.

The water pump uses centrifugal force to send fluid

to the outside while it spins, causing fluid to be

drawn from the center continuously. The inlet to the

pump is located near the center so that fluid return-

ing from the radiator hits the pump vanes. The

pump vanes pushes the fluid to the outside of the

pump, where it can enter the engine.

The fluid leaving the pump flows first through the

engine block and cylinder head, then into the radia-

tor and finally back to the pump.

Water pump flow Characteristics

Pump Speed

in RPM

Discharge in

LPM

Inlet Pressure

in Bar

4200

120

1.2

E. Temperature Sensor

A semi-conductor material changes its resistance

when exposed to variable temperature source.

Resistance decreases as temperature increases.

Temperature sensor provides engine operating

temperature input to the ECU.

Corrections for injection parameters are done by the

ECU based on coolant temperature to run the

engine with maximum efficiency at all temperatures.

F. Water Box

The thermostat and temperature sensor are

mounted on the water box. The water box is

mounted on side of cylinder head. It’s a supportive

component to the temperature sensor