6CT8. 3 Diesel Engine Assembly For Excavator R335 - 7 Water Cooling

Specification

Description

The cooling system of the engine

Pump / Force Circulation Water Cooling System: This system is similar in construction to the thermo-syphone system except that it makes use of a centrifugal pump to circulate the water throughout the water jackets and radiator.

The water flows from the lower portion of the radiator to the water jacket of the engine through the centrifugal pump. After the circulation water comes back to the radiator, it loses its heat by the process of radiation. This system is employed in cars, trucks, tractors, etc.

The main parts in the Liquid - Cooling System are:

Radiator and Pressure Cap
Pump
Radiator Fan
Plumbing
Fluids
Thermostat Valve
Temperature Gauge
Hose pipes
Radiator

A radiator is a type of heat exchanger. It is designed to transfer heat from the hot flows through it tothe air blown through it by the fan. Most modern cars use aluminium radiators. The radiators are made by brazing thin aluminium fins to flattened aluminium tubes. The coolant flows from the inlet to the outlet through many through many tubes mounted in a parallel arrangement. The fins conduct the heat from the tubes and transfer it to the air flowing through the radiator.

There are normally three types of Radiators:

Gilled Tube Radiator
Tubular Radiator
Honey Comb or Cellular Radiator

Gilled Tube Radiator: This is perhaps the oldest type of radiator, although it is still in use. In this, water flows inside the tubes. Each tube has a large number of annular rings or fins pressed firmly over its outside surface.

Tubular Radiator: The only difference between a gilled tubes radiator and a tubular one is that in this case there are no separate fins for individual tubes. The radiator vertical tubes pass through thin fine copper sheets which run horizontally.

Honey Comb or Cellular Radiator: The cellular radiator consists of a large number of individual air cells which are surrounded by water. In this, the clogging of any passage affects only a small parts of the cooling surface. However, in the tubular radiator, if one tube becomes clogged, the cooling effect of the entire tube is lost.