Saturday, 17 October 2015

Why Diesel Engine Not Used In Two-Wheelers

Today I am going to tell you some reasons why diesel engines are not used in two-wheelers-

  1. Due to high compression ratio, diesel engine produces more vibration and noise as compared to the petrol engine. It is not possible for a light vehicle to handle this high vibration and noise.That's why diesel engines are not used  two-wheelers in .
  2. Diesel engine produces approximately 9% more carbon-di-oxide per litre as compared to the petrol engine. So it makes greater pollution than petrol engine and it is not good to use for environment.
  3. Diesel engine works on high pressure, so wear and tear is high in diesel engines. To reduce this wear and tear oil change are frequently required.
  4. Diesel engine has lower power to weight ratio.

Friday, 16 October 2015

Modern Concept Six Stroke Engine

To make an engine more efficient and to reduce emissions a new concept called six stroke engine is taken into consideration but practically this type of engine not used because it has some drawbacks which i explain later. The six-stroke engine is a type of internal combustion engine based on the four-stroke engine, but with additional complexity intended to make it more efficient and reduce emissions. There are two types of approaches with this type of engine-

Wednesday, 14 October 2015

2 Stroke VS 4 Stroke IC Engines

As we know an engine is a mechanical device which convert one form of energy into usable mechanical energy.

According to its operating principle an engine is classified as-

  • Two Stroke or Two Cycle Engine
  • Four Stroke or Four Cycle Engine
Before i explain what is two or four stroke engine? first we will concern about what is stroke? How many types of cycle is used by an engine?

Question: What Is Stroke?

Answer: Stroke refers to the movement of the piston in the engine.


Question: How many types of cycle used by an engine. name them?
Answer:   Four types of cycles used by an engine which are-

  1. Intake Cycle/Stroke
  2. Compression Cycle/Stroke
  3. Power Cycle/Stroke
  4. Exhaust Cycle/Stroke


Internal Combustion VS External Combustion Engines

A combustion engine is an engine which generates mechanical power by combustion of a fuel. Either they can burn internally or externally.

According to it's combustion process they can be classified as-

  • Internal Combustion or I-C Engine
  • External Combustion or E-C Engine

Petrol VS Diesel Engines

An engine is a machine designed to convert one form of energy into mechanical energy.



2015@Techbros
Fig. An Engine



According to they fuel used there are generally two types of engine are used commonly which are-
  • Petrol or Gasoline engine or Spark-Ignition engine or S-I engine
  • Diesel engine or Compression-Ignition engine or C-I engine

Monday, 12 October 2015

About Indian Railway Locomotives


A locomotive or engine is a rail transport vehicle that provides the motive power for a train.

Locomotives of India presently consist of electric and diesel locomotivelocomotive is also called loco or engine.

Classifications-
There are two types of locomotive run in India.
  • Diesel Locomotive Or Dual-Mode Locomotives Or Diesel-Electric Locomotive
  • Electric Locomotive