Automotive Technology

What is an Automobile

Here you find the best Automotive Technology. From where you learn the basic maintenance of your vehicle. And all the latest Technologies which will come in the sector of Automotive.

Exhaust gas Recirculation | EGR | Automotive Technology

Exhaust Gas Recirculation Automotive Technology
Exhaust Gas Recirculation an Automotive Technology

An Exhaust Gas Recirculation (EGR) is the emission controlling technique majorly used in Diesel Engines.

But with the introduction of Bharat Stage 6 Emission Norms which are equivalent to Euro 6 Emission Norms.

EGR has also become part of Gasoline Engines. Basically, by using the Exhaust Gas Recirculation Technology.

We are primarily focusing on the reduction of Nitrox (NOX) Emissions.

So what happens is when the chemical reaction between Nitrogen and Oxygen takes place.

The Nitrox (NOX) are chemically the Oxides of Nitrogen such as Nitric Oxide (NO), Nitrogen Dioxide (NO2), Nitrous Oxide (N2O) and many more.

These are highly poisonous and dangerous gases for living beings and the environment.

Nitrox also contributes in the production of Smog and Acid Rain……….continue Reading

Gasoline Direct Injection (GDI) | How GDI works? | GDI Advantages:- Automotive Technology

gasoline direct injection(gdi) Automotive Technology
gasoline direct injection(GDI) Automotive Technology

Gasoline Direct Injection (GDI) means that the fuel (Petrol / Gasoline) is Directly Injected into the Combustion Chamber rather than Intake Port as in Port Fuel Injection Engines. 

In addition, Injecting Fuel Directly into the Combustion Chamber offers many advantages.

Gasoline direct injection ( GDI):Automotive Technology

It is also known as a petrol direct-injection engine and it is a fuel injection employed in the latest four-stroke gasoline engines.

In this technology, the gasoline gets highly-pressurized and than injected via a common rail fuel line directly into the combustion chamber of each cylinder.

This direct injecting fuel technology requires a high-pressure injection into the combustion chamber.

Whereas low-pressure injection is used in the intake cylinder port.

The GDI technology is very rapidly adopted by automotive industries, with a growth rate of 2.5 % to 45 % for the model year 2008 to the model year 2014……..Continue Reading

Braking system in Automobile

Braking system in Automobile
A braking system in the Automobile. function and types of Automobile.

BRAKES are one of the most important control components of the vehicle. This is the main factor which helps to control the vehicles.

The braking system in automobile Helps to stop the vehicle at a particular distance.

With the Improvement of the Braking system, we are able to increase the speed of modern cars on the road.

The braking system used most frequently operates hydraulically, by pressure applied through a liquid.

These are mainly used to slow or stop the car and it is operated by the foot of the person and is known as service brakes.

And there is one more braking which used to park the car know as a parking-brakes system.

Which is mechanically operated by a separate foot or a hand lever.

In heavy vehicles like truck and buses, the braking system is operated pneumatically, means by air pressure.

All the Braking system in Automobile depend upon the friction between the moving parts and the stationary parts..continue Reading

Diesel Exhaust Fluid:- Automotive Technology

Diesel Exhaust Fluid Automotive Technology
Diesel Exhaust Fluid Automotive Technology

As the emission norms in the automotive sector are becoming strict.

Automotive Industries are adopting new technologies to meet the required emission norms.

One of the technologies being used for Reducing Emissions in a diesel engine is Selective Catalytic Reduction.

Which is often termed as SCR. In SCR, Diesel Exhaust Fluid is used to reduce Nitrox Emissions.

Now as we have learned that DEF is injected into exhaust which results in the reduction of Nitrox Emissions.

Let us now have look at Diesel Exhaust Fluid.


Diesel Exhaust Fluid (DEF) is often termed as Automotive Urea because it is a mixture of 67.5% of Deionized Water and 32.5& of Urea.

It is injected into the exhaust in the form of liquid.

When DEF is injected into hot exhaust gases, the water present in it evaporates.

The remaining urea is decomposed into ammonia (NH3) and isocyanic acid (HNCO).

(NH2)2CO             →           NH3              +            HNCO

Urea                                   Ammonia               Cyanic Acid

Now the Isocyanic acid is further hydrolyzed forming Ammonia (NH3) and Carbon Dioxide (CO2).

HNCO      →       NH3        +   CO2

Isocyanic Acid     Ammonia         Carbon Dioxide

Now the ammonia thus produced in the presence of oxygen and catalyst reduces Nitrox to Nitrogen, water, and carbon dioxide.

4NO        +      4NH3   +    O2   →     4N2   +    6H2O

  Nitric Oxide         Ammonia       Oxygen       Nitrogen         Water

6NO2       +        8NH3       →      7N2      +       12H2O

    Nitrogen Dioxide       Ammonia          Nitrogen              Water

DEF Freezing

DEF has a freezing temperature of -11oc due to which it becomes unfavorable for use in vehicles operating at very low temperatures.

To solve the problem of DEF Freezing it is heated by using engine heat or electric heater.

The process of melting the DEF must be done in a very short time in order to make it viable to be used.

When DEF is melted using Engine Heat, the coolant from the engine is circulated into coils present in the DEF tank.

This process generally takes time as DEF can only be melted when coolant flowing through coils is at sufficiently high temperature required to melt DEF.

The coolant can only attain that level of temperature when it is in operation for a few minutes...Continue Reading

Bharat stage 6:-


Nowadays the introduction of Bharat Stage-6 / BS VI / BS 6 technology in Indian Automotives is one of the hottest news.

It is the big leap for the Indian Automotive Sector as with the introduction of Bharat Stage 6 technology.

Indian Automotive sector will be able to cope up with European and American Vehicle Industries in terms of Emission Norms.

If we talk about Bharat Stage 4 Norms which imposed in India in 2010 but strictly imposed in 2017.

Companies offered a huge discount on vehicles on March 31st, 2017 as from April 1st, 2017

Bharat Stage 3 vehicles were to be banned.

But this scenario does not seem to happen in 2020 April, as companies are planning their strategies for 2020 well before.

Some of the vehicles are even coming into market Bharat stage 6 ready like Royal Enfield 650 Twins.

It is an appreciable step by Govt of India to skip BS V Emission Norms.

Now for most of the people who are not technical in the Automotive sector, these terms are not familiar.

They only know that Bharat Stage or BS term refers to emissions norms.

But how emissions are reduced, they are not familiar with it.

So, Revjust is bringing the series of articles where you can go in technical detail into these technologies.

Bharat stage 6 Norms:-

Bharat stage 6 emission norms

As stated in the previous article, Bharat Stage refers to the emission norms of automobiles in India.

Now let us have the look at what these norms are and how these are different from Bharat Stage 4 Norms.

M1: 4 wheeler Vehicle for passengers, with a maximum of 8 seats in addition to the driver seat.

M2:4 wheeler Vehicle for passengers, with more than 8 seats in addition to the driver seat.

M3: 4 wheeler Vehicle for passengers, with more than 8 seats in addition to the driver seat and mass exceeding 5 tonnes.

N1: 4 wheeler Vehicle for goods carriage with mass not exceeding 3.5 tonnes.

 N2: 4 wheeler Vehicle for goods carriage with mass not less than 3.5 tonnes but not exceeding 12 tonnes.

N3: 4 wheeler Vehicle for goods carriage with a mass exceeding 12 tonnes.

In Bharat Stage 6 / BS-VI Norms the independent limit of Nitrox (NOX) is not defined for three-wheelers.

So the limit shown here is Hydrocarbon and Nitrox (HC + NOX).

Emission Norms for Petrol engines

Now, Bharat Stage 6 / BS-VI Norms for petrol engines majorly focus on pollutants like Hydro Carbons, Carbon Monoxide, Nitrox, Nitrox, and Hydro Carbons Combined.

Car Maintenance:-

Car Maintenance
Car Maintenance

When it comes to taking care of our vehicles, many of us are not able to do it well.

Taking care of a vehicle/car or bike needs special attention, which many of us are not able to give due to our busy and tight schedules.

But the fact is you need no special time or skills for proper maintenance of your vehicle.

Here when I am talking about taking care of the vehicle or keeping the vehicle highly maintained,

It doesn’t mean highly specialized maintenance which is to be done with special tools and equipment.

But I am talking about basic care that your vehicle needs to increase the lifetime and reliability of your vehicle.

Now there are few points on which one should focus to increase vehicle reliability. …..Continue reading

Engine overheating:-

Engine Overheating | car Engine Overheating Reasons

In our daily lives, we face many problems. We know the solution to some but not for all.

One of the problems that people face is overheating of the Vehicle Engine.

An Engine overheating happens due to the Engine Cooling System Failure.

The function of the Engine Cooling System is to keep an Engine temperature in the operating range.

So, let us first figure out why Engine overheating happens.

What is an Automotive:-

What is an Automobile | Introduction about Automobile?

An Automobile is a vehicle which is not powered by human but rather controlled by a human.

An Automobile has huge varieties of the vehicle for example:- Cars, Buses, Trucks, Bikes, etc.

A three-wheeled vehicle, invented by Karl Benz in 1885, patented under the name ‘Benz Patent-Motorwagen’.

And at the same time, Another inventors ‘Gattieb Daimler’ and ‘Wilhelm Maybach’ from Germany got their patent filed for a motorcycle.

But the first vehicle available for people was Model-T Ford made Henry ford in 1908 It was the first mass-production automotive.