Seminar Topic on Four wheel steering system

August 24th, 2010 by CJ Samson | 46 Comments | Filed in Automobiles, Mechanical Seminar Topics

Four-wheel steering, 4WS, also called rear-wheel steering or all-wheel steering, provides a means to actively steer the rear wheels during turning maneuvers. It should not be confused with four-wheel drive in which all four wheels of a vehicle are powered. It improves handling and helps the vehicle make tighter turns. Production-built cars tend to understeer or, in few instances, oversteer. If a car could automatically compensate for an understeer /oversteer problem, the driver would enjoy nearly neutral steering under varying conditions. 4WS is a serious effort on the part of automotive design engineers to provide near-neutral steering.  The front wheels do most of the steering. Rear wheel turning is generally limited to half during an opposite direction turn. When both the front and rear wheels steer toward the… Read the rest

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Catalytic converter for cars

August 23rd, 2010 by CJ Samson | 39 Comments | Filed in Automobiles, Mechanical Seminar Topics

Millions of cars or the road means only one thing, an excellent source for air pollution. The amount of pollution that all cars produce together can create big problems. The amount of pollution that all cars produce together can cause big problems. Government created laws that restrict the amount of pollution that cars produce to solve it. Auto makers have made many improvements to car engines and fuel systems to keep up with these laws. In 1975, an interesting device called catalytic converter was created. The device, converts harmful pollutants into less harmful emissions before they ever leave the car’s exhaust system.

The exhaust from the combustion in a car engine is comprised of six main ingredients:

  1. Nitrogen gas, Carbon dioxide and water

… Read the rest

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Hybrid vehicles

August 14th, 2010 by admin | 25 Comments | Filed in Automobiles, Mechanical Seminar Topics, Power & Energy

The dictionary defines hybrid as something of mixed origin. A hybrid vehicle is one that combines a smaller than normal internal combustion gasoline engine with an electric motor. An engine that combines two or more sources of power is called a hybrid engine.

Typical features in a hybrid include the following:
• Produces much less power than an average
• Produces much less pollution than standard gasoline cars
• Usually constructed of ultra light weight materials like carbon fiber or aluminum to overcome the power gap.
• Generally designed to be more aerodynamic than most cars, allowing them to “slice” through the air instead of pushing it out of the way
• A process called regenerative braking is employed to store… Read the rest

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Air Cars

August 13th, 2010 by CJ Samson | 269 Comments | Filed in Mechanical Engineering Projects, Mechanical Seminar Topics, Power & Energy

We do it every day without thinking. Start the engine, drive around, fill up with fuel, pay a lot of money and pollute the atmosphere some more! But, it doesn’t have to be that way, many alternative sources of fuel are being developed.

Science fiction novelist Jules Verne had predicted that cars would one day run on air.  Guess what the future of fuel is? You guessed it right, its air!  Think about a car that runs on air. The air we breathe, the air that is for free. Imagine, it costs nothing to fill up your car with gas, and that gas also happens to be the same gas that fills our lungs with every breath!

The future of transportation will soon be… Read the rest

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Electronic fuel injection (EFI)

July 30th, 2010 by CJ Samson | 39 Comments | Filed in Automobiles, Mechanical Seminar Topics

Electronic Fuel Injection (EFI) is a substitute for the conventional metering system which mixes the air and fuel in the correct ratio before feeding it down to the main cylinder to power the vehicle.

Usually in a bike a carburetor is responsible for carrying out this task. But, the downside of using a carburetor is that it has fixed settings and it has certain limitations. To overcome this negative aspect of a new system has been introduced. However, for this brand new system to work, it needs data from several sensors. These sensors include an engine speed sensor, temperature sensor, voltage sensor, throttle position sensor, oxygen sensor and an air flow sensor. The data collected from the various sensors are send to the Electronic control unit… Read the rest

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Hydrogen (water) Powered vehicle

July 29th, 2010 by CJ Samson | 234 Comments | Filed in Automobiles, Mechanical Engineering Projects, Mechanical Seminar Topics, Power & Energy

Not a Gimmick! Finally the science of Hydrogen automotive power has been made a reality! Technically a device that converts the energy stored in hydrogen into motion can be called a Hydrogen engine. Hydrogen would make a great fuel for the environment since burning Hydrogen produces nothing but water!

Hydrogen Powered vehicle essentially consists of the following

1)      Fuel tank

Liquid hydrogen is stored in a tank at the rear of the car and is pumped forward to the fuel cell stack as and when required.

2)      Fuel Cell Stack

When Hydrogen is combined with Oxygen in a fuel cell a chemical reaction creates electricity.

Hydrogen Powered vehicle

1)      Battery Pack

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Remote controlled material handling equipment (RCMHE)

July 28th, 2010 by CJ Samson | 103 Comments | Filed in Mechanical Engineering Projects, Mechanical Seminar Topics, Robots

Prior to the introduction of the so called “Material handling equipment” humans had to perform physical labor to carry out heavy duty tasks. This could be made possible by employing a huge number of workers. However, when the goods came in bulk unloading and loading turned out to be a very time consuming affair. The use of Material handling equipment in logistics has played a significant role in making the loading and unloading activities easier and faster.

Ask yourself the question “Why are ‘Remote controlled’ material handling equipment used?” and almost instantly you arrive at the logical answer that the chief benefit would be allowing personal to control their machine from a safe distance.

Remote control can be achieved by two different modes:… Read the rest

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Remote controlled material handling robotic crane for Bomb squads

July 27th, 2010 by CJ Samson | 79 Comments | Filed in Mechanical Engineering Projects, Mechanical Seminar Topics, Robots

It might be just a box of tools or a suitcase someone lost, either way suspicious unattended packages are reason enough to clear Airports, Shopping malls or the whole neighborhood. But while most humans are evacuated from the potential blast zone, one team is doing just the opposite. They are coming in for a closer look! And yes, you guessed it.  It is the Bomb squad. But the men in the bomb squad dare not get too close! In the past, they would have been forced to risk their lives inching ever closer to a device that could detonate at any moment.  But now, they need not put their life at stake. It is time to change working the dangerous way. That is, by hand!

All… Read the rest

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Fire Fighting Robot

July 26th, 2010 by CJ Samson | 113 Comments | Filed in Mechanical Engineering Projects, Mechanical Seminar Topics, Robots

A robot system for fire fighting in tunnels

Different kinds of accidents are possible in a tunnel but, accidents involving fire are the most dangerous of all. If it is not possible to extinguish the fire in minutes, it would be so hot that human life will be at risk. But, one of the biggest fears among emergency personnel who should respond to tunnel fires is the possibility of finding hazardous material fueling fire! That was exactly what happened on the 13th of May,1949 which resulted in the Holland tunnel fire. When something as grave as that happens, there is threat to life not only because of the rampaging fire but also because of the toxic materials. In such a situation it is best to leave… Read the rest

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Over speed indicator and Accident Avoidance systems in a four wheeler

July 18th, 2010 by CJ Samson | 148 Comments | Filed in Automobiles, Mechanical Engineering Projects, Mechanical Seminar Topics

Except for the Autobahn in Germany, almost all roads have specific speed limits. And it is difficult for the driver to always look out for speed limits signs and adjust his speed accordingly. Over speed indicator is a device that tells the driver if he is exceeding the particular speed limit. With the over speed indicator in your car you can be sure that you are not going get yourself booked for over speeding. The system has a computer which stores the speed limits of different areas. The GPS in the system feeds the exact location of the car to the computer which looks up in its database to determine the permissible speed for the area and limits the car within the allowable speed.

Accident Avoidance… Read the rest

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