Transportation engineer

Introduction

•The Internal Combustion (I.C.) engine is a heat engine that converts chemical energy (in the fuel) into mechanical energy (available on a rotating shaft).

History

1859Discovery of oil.

1876First four stroke spark ignition engine produced by Nicholas Otto.

1892First compression ignition engine produced by Rudolph Diesel.

ClassificationsInternal combustion engines can be classified in a

number of ways: Type of ignition:Spark Ignition (S.I.) and Compression Ignition

(C.I.) Method of fuel input (S.I. engines):Carbureted And Fuel Injection. Fuel used:1. Gasoline (Petrol / Benzene)2. Diesel3. Other (Gas, LPG, Alcohol….etc)

S.I EnginesSpark Ignition

Engine depends on a spark obtained from spark plug situated on the head of the engine

This engine operates using gasoline fuel.

Engine ComponentsBlockCylinderCombustion ChamberPiston: Cylindrical

mass transforming the pressure forces to the crankshaft.

Crank ShaftCam shaftValvesCrank CaseSpark Plug

Comparison between Carburetor and InjectionCost

The injection needs more complicated components than carburetor (sensors, injectors) so its more expensive and harder on maintenance.

PollutionsThe emissions represented by injection is less than carburetor engines so its more preferable on automotive application.