Skip to main content

Sneak into the Fuel system of Petrol Engine

After getting to know about the types of engines and their working, its time to understand what makes the engine accept the fuel we supply. 

In a  Petrol  engine a component called "Carburetor" prepares a  homogeneous (Uniform) mixture of air and petrol before sending it to the intake valve. The main criteria to be noted is that, the combustible air fuel mixture must be in proper proportion before admitting it to the engine cylinder. This process is known as carburetion. Main reason for an efficient petrol engine is the ratio  Air- Fuel sent into the engine. 

So now,let us look at types of Air Fuel Mixture.

  • Stoichiometric or Chemically correct Mixture
  • Rich Mixture 
  • Lean Mixture

1. Stoichiometric or Chemically correct Mixture
Chemically correct or stoichiometric mixture is the fuel which has sufficient amount of air for complete combustion of the fuel. The correct air fuel ratio  of petrol engine is 14.7:1 or  15:1 which means 15 parts of air is enough to completely covert 1 part of fuel to carbon dioxide and water.

2.Rich mixture 
A mixture which has less air than the required amount is called rich mixture Air fuel mixture of 10:1 indicates that 10 parts of air is not enough to do combustion of 1 part of fuel . It  may give cooling effect to combustion chamber but it will waste fuel.so it is not preferable to use as it is less efficient.Rich mixture may enter due to malfunctioning oxygen sensor or  malfunctioning of fuel pressure regulator or many more reasons.. 

3.Lean Mixture 
A lean mixture contains more air than a required level. If AFR(Air Fuel Mixture) is 17:1 then it means more air to do combustion of 1 part of fuel. It may be due to clogged fuel filter or malfunctioning oxygen sensor or less pressure fuel or many more reasons..






Comments

  1. Tsg Used Cars21 May 2024 at 15:56

    TSG Used Cars offers a wide selection of high-quality pre-owned vehicles, including the popular Verna second hand. Whether you're looking for a reliable sedan with advanced features or a stylish ride that fits your budget, TSG Used Cars ensures you find the perfect match. Each Verna second hand car undergoes rigorous inspection and certification processes to guarantee excellent performance and peace of mind. With competitive pricing and a commitment to customer satisfaction, TSG Used Cars is your go-to destination for finding a Verna second hand that meets all your needs and preferences.

    ReplyDelete

Post a Comment

Popular posts from this blog

Types Of vehicle Drive Mechanisms

 Drive Mechanisms: A brief explanation Before knowing about the drive mechanism,let us understand what do we mean by a DRIVE.... DRIVE  is the arrangement (or position) of engine and transmission system in various ways. There are four types of Drives:                                       1.Front Engine Rear wheel Drive.                    2 Front Engine Front Wheel Drive.                    3.Rear Engine and Rear wheel Drive                    4.Four Wheel Drive. 1. Front Engine Rear Wheel Drive:                              This is the most common type of arrangement in 4 wheeled Automobile. Here, engine is positioned in front portion and drive is in back wheel which means the back wheel gets the power during transmission via clutch, gearbox and differential using propeller shaft. 2.Front Engine Front Wheel Drive:             This type of transmission consists of an Engine in front Portion and unlike the previous type, it has the power supplied to front wheels. Which means the mov
11 comments
Read more

INTRODUCTION TO AUTOMOBILE ENGINEERING

             HISTORY OF AUTOMOBILE           The First Automobile with Otto Cycle (Petrol cycle) was built by Karl Benz from Germany in 1885 and was granted patent  in 1886.. "Development of this great Invension".... Very soon invension of accelerator for speed control and ignition system,clutch,gear shifting mechanism and most importantly radiator cooling system for engine. Later on devoloping the automobile in the year 1888. In 1893  introduction of the first Four Wheeled Automobile which was having a Four stroke engine. Large scale production of automobiles started in 1902. As years went on.. massive scale of automobile production started and revolutionized the industry... Making its importance around the globe. After several modifications and improvements in design of the automobile , the efficiency safety and performance has become the most noticed criteria for automobile enthusiasts.. The Automobile industry made lifestyle advanced and made transportation of people eas
6 comments
Read more

Does Wheel Alignment really matter?

 If you have visited a any vehicle repair shop, you might have observed that the car wheel will be connected to a computerized machine ,where the operators do adjustments and try to correct the wheel position.In short wheel alignment is correcting steering geometry.On a technical note it is maintaining the castor angle,camber angle,King pin inclination and Toe-in and Toe-out distances.  While manufacturing any vehicle, the manufacturer will have certain angles in which the wheels are connected to the axle. For proper driving of the vehicle those angles has to be maintained. to maintain those angles wheel alignment is done.You may think once the manufacturer has fixed the angle,why will it change. But in reality, due to vehicle  movement in irregular roads the alignment  changes. If  it is left unnoticed, it may lead to wear and tear of tyre and vehicle may not have straight line stability and may start sliding to one side.The main reason of wheel alignment is to avoid these complicatio
5 comments
Read more