4TNV98T - ZPXG Diesel New Engine Assembly For Excavator SK55 - C

Specification

Description

Valve Arrangement

According to the valve arrangement of the inlet and exhaust valve in various positions in the cylinder head or block, the automobile engines are classified into four categories. These arrangements are named as ‘L’, ‘I’, ‘F’ and ‘T’. It is easy to remember the word ‘LIFT’ to recall the four valve arrangement.

Different Types of Engine

(i). L-head engine: In these types of engine, the inlet and exhaust valves are arranged side by side and operated by a single camshaft. The cylinder and combustion chamber forms and inverted L.

(ii). I-head engine: In I-head engines, the inlet and exhaust valves are located in the cylinder head. A single valve actuates all the valves. These types of engine are mostly used in automobiles.

(iii). F-head engine: It is a combination of I-head and F-head engines. In this, one valve usually inlet valve is in the head and the exhaust valve lies in the cylinder block. Both the sets of valve are operated by the single camshaft.

(iv). T-head engine: In T-head engines, the inlet valve located at one side and the exhaust valve on other side of the cylinder. Here two camshafts are required to operate, one for the inlet valve and other one is for the exhaust valve.

Also Read:

Types of Gearbox – Complete Explanation

Torque Converter Working, Principle, Main Parts and Application.

Types of Supercharger in Automobile

Types of cooling

On the basis of types of cooling, the engines are classified as:

(i). Air cooled engines: In these engines, the air is used to cool the engines. In air cooled engines the cylinder barrels are separated and metal fins are used which provides radiating surface area that increase cooling. The air cooled engines are generally used in motorcycles and scooters.

(ii). Water cooled engines: In water cooled engines, the water is used for the cooling of engine. Water cooled engines are used in cars, buses, trucks and other four wheeled vehicles, heavy duty motor vehicles. An anti-freezing agent is added in the water to prevent it from freezing during cold weather. Every water cooled engines has radiator for the cooling of hot water from the engine.