Mechanic Diesel Study

Main Difference – Internal vs External Combustion Engine

Internal and external combustion engines  are two types of heat engines: they convert thermal energy into mechanical energy. The main difference between internal and external combustion engine is that in internal combustion engines, the working fluid burns inside the cylinder, whereas in external combustion engines, combustion takes place outside the cylinder and heat is then transferred to the working fluid. 

What is Automobile Engine

According to Piston There are three types 

1) Rotary Piston

                                                                    2) Free Piston

                                                                    3) Reciprocating Piston. (Now Maximum engine have Reciprocating Piston)

Reciprocating Piston: A reciprocating engine, also often known as a piston engine, is typically a heat engine (although there are also pneumatic and hydraulic reciprocating engines) that uses one or more reciprocating pistons to convert pressure into a rotating motion. This article describes the common features of all types.

There are two types of Reciprocating Engine 1. Petrol engine and 2. Diesel engine. (two stroke and four stroke)

Four stroke engine operation

1     Suction stroke, Compression stroke, Power stroke,Exhaust stroke.