Piping and instrumentation diagram (P&ID)

Piping and instrumentation diagram (P&ID)

TOP 10 REASONS- WHY ONE SHOULD BE A MECHANICAL ENGINEER??

1.You get the opportunity to create something tangible and useful. Your creations will be used by others.It gives u the greatest joy.

2.Its the broadest branch of engineering…so your career options are open even after u graduate:-

 Defence ,Civil services,High end R&D,Manufacturing,Design,Energy sector,Management,Entrepreneurship,Masters(ME/MS)

3.Variety to be learnt- u learn how to design and make things ranging from a Safety Pin to a Spacecraft.

4.Easy to imagine and visualize whatever u learn

5.Develop a range of skills – u learn the work of a machine operator (machinist), a smith, a foundryman, a mechanic,a plant manager,a researcher and a policy maker.

6.U work with massive machines (majestic in nature) to tiny precision instruments,micro and nano devices. U’ll be savviest engineer.

7.Importance of your work.U form the human resource that is required for the survival of any industry and forms the backbone of modern human life.u r the person who may generate power/energy from natural resources,make equipments and processes to mine minerals,make cars, bikes ,buses, trucks, planes,ships(transportation can be compared to human blood that transports nutrients), make machines that manufacture products ranging from food to surgical instruments to weapons,mange factories and businesses.

8.Get paid handsomely(after gaining a few years experience even if not as a fresher).

9.Not much of girls hanging around(they usually don’t prefer to opt for this course,its thought to be a manly course).U dont have to worry about getting dressed perfectly for class or for girls giggling at u for some silly or not so silly but serious reason.Ur in a man’s world.But there are a few out of the ordinary and brainy girls who do take up this course and love it.

10.It sounds and feels nice to be called a Mechanical Engineer.

Base of Design

Base of Design.

Before design a 3D model, every engineering must understand the concept of the model and how is the mechanism work. This is the best process to build a 3D model. For example, using Transmission as the planning concept to build 3D, or applied Electrical component. This is convenience for assembly a structure and simulate the mechanism.

ALL WHEEL DRIVE

All Wheel Drive

• An AWD vehicle (short for All-wheel drive vehicle) is one with a powertrain capable of providing power to all its wheels, whether full-time or on-demand.It appears in everything from supercars with out-of-this-world performance like the Audi R8 to family crossovers and SUVs like the Volvo XC90.

Advantages

• As compared to rear wheel driven car, there is a faster and safer travelling due to good road holding on curves.
• Gives sportier handling and traction to a broader range of cars.
• A lower flat floor lines is provided due to dispensing with the propeller shaft resulting in lowering of centre of gravity.
• The engine, clutch, gear box and final drive are combined similar to the rear engine car. This provides a more comfortable drive due to final drive spring. 
• Good road adhesion is obtained due to a large part of the vehicle’s weight being carried on the driving wheels under normal conditions.

REAR ENGINE REAR WHEEL DRIVE

Rear engine rear wheel drive

• Rear-engine, Rear-wheel-drive layout places both the engine and drive wheels at the rear of the vehicle.
  

Advantages

• Better road adhesion preferably on steep hills and while accelerating with increased weight on the driving wheels.
• Generally a proportional part of weight of the car is transferred to the front wheels while braking. Therefore, due to the firm road surface contact maintained by rear engined car results in assistance to stopping of the vehicle.
• In this arrangement, front wheels are only for steering purposes.
• The necessaity of the propeller shaft is altogether eliminated due to the combination of engine, gear box and final drive. This also requires only one common oil sump.
• Good visibility and stream lining is provided by proper design of vehicle front.

FRONT ENGINE FRONT WHEEL DRIVE

Front engine front wheel drive

Front-wheel drive is the most common form of engine/transmission layout used in modern passenger cars, where the engine drives the front wheels only.In this layout a front mounted engine-clutch-gear box unit drives a beam type rear axle suspended on leaf sprints through a propeller shaft with two universal joints. Most front wheel drive vehicles today feature transverse engine mounting, though many in prior decades were positioned longitudinally instead.

Advantages

• Balanced weight distribution between the front and the rear wheels.
• Easy front wheel steering.
• Behind the rear seats, large luggage space is available.
• Accessibility to various components like engine, gearbox and rear axle is better in comparison to other layouts. The control linkages-accelerator, choke, clutch and gearbox are short and simple.
• Full benefits of the natural air stream created by vehicle’s movement is taken by the forward radiator resulting in reduced power losses from a large fan.
• Small length of the propeller shaft permits the angularity of the universal joints to be small and easily provided by simple types.

BEAM ENGINE

A Beam Engine is a type of steam engine where a pivoted overhead beam is used to apply the force from a vertical piston to a vertical connecting rod. This configuration, with the engine directly driving a pump, was first used by Thomas Newcomen around 1705 to remove water from mines in Cornwall. The efficiency of the engines was improved by engineers including James Watt who added a separate condenser, Jonathan Hornblower and Arthur Woolf who compounded the cylinders, and William McNaught (Glasgow) who devised a method of compounding an existing engine. Beam engines were first used to pump water out of mines or into canals, but could be used to pump water to supplement the flow for a waterwheel powering a mill.