SIX WEEKS TRAINING REPORT (2 June-14 July, 2012)

Stan Autos, Jalandhar

Submitted by:Manhar Parmjot Singh

Registration Number: 10900912Programme Name: B.Tech-M.Tech (M.E.)

Section: M3902A17

School of Mechanical EngineeringLovely Professional University, Phagwara.

 INDEX

Organization overview ( type, location,work-culture,external guide).

Technology learnt.

Gantt chart.

ORGANIZATION OVERVIEW

Joined Industrial Training at Stan Autos, Jalandhar. Leading agency which deals with the selling and servicing of cars of Maruti-

Suzuki Company. Well known for its well standard, better infrastructure and its qualitative

features of servicing. Located at G.T road, opposite to Delhi Public School ,Jalandhar. Work culture of the organization was very enthusiastic. Source of the external was staff members of workshop. Taught the practical skills that are essential for the development of

knowledge.

TECHONOLOGY LEARNT

Air filter Important part of a car's intake system, as it catches the dirt and other foreign

particles in the air, preventing them from entering and damaging the engine. Composed of fibrous materials to remove solid particulates such as dust, mold,

and bacteria from the air. Used in applications where air quality is important, especially in engines. All of the air that enters the system first passes through the air filter. Vehicles have a specific holder for this filter, a plastic or metal box. The holder

is connected to the intake manifold by a large plastic tube through which the air flows.

Affects car's performance & should be changed regularly, or the vehicle's gas mileage will suffer.

Air filter(Cont.)

A dirty filter cause systems to run ineffectively, as emissions control system, which regulates the car's air-fuel mixture. It also cause spark plugs, which ignite the fuel to foul, as there will be too much fuel without enough air.

Intercooler

Type of radiator that cools the air compressed by a supercharger or turbocharger.

Compressing the air heats it, which makes it less dense,. Intercoolers are simple

radiators which decreases the temperature of intake air & increasing its density

before combustion and provides more oxygen to increase combustion.

The “inter” means between, as intercoolers are positioned between the turbo or

supercharger and the intake manifold.

Widely used in automotive for forced induction internal combustion engines to

improve their efficiency by increasing intake air charge density.

Intercooler(Cont.)

Passing a compressed and heated intake charge through an intercooler

reduces its temperature and pressure to reduce the cylinder combustion

temperature, avoid detonation, excessive wear, or heat damage to an engine

block.

Increases system performance.

Mounted in areas of an automobile with maximum air flow i.e. in front.

Exhaust gas recirculation(EGR)

Is a nitrogen oxide (NOx) emissions reduction technique used in petrol &

diesel engines.

Works by recirculating a portion of an engine's exhaust gas back to the

engine cylinders & this exhaust displaces the amount of combustible matter

in the cylinder.

Increases the efficiency of gasoline engines by following mechanisms:

i. Reduced throttling losses. Increase in inlet manifold pressure and reduced

throttling losses.

ii. Reduced heat rejection. Low combustion temperatures reduces NOx

formation & reduces the loss of thermal energy to combustion chamber

surfaces, leaving more for conversion to mechanical work .

iii. Reduced chemical dissociation. Low peak temperatures result in more of

the released energy near TDC,& results in the dissociation of combustion

products.

EGR valve cools the exhaust valves and makes them last far longer.

Oil Filter

Located on the side of the engine block.

Circulates the oil through the engine; every time the engine oil circulates, it

passes through the oil filter.

Protects the engine by catching any large particles in the oil to avoid damage to

engine.

It also protects the engine by retaining a small amount of oil when the car is

turned off.

Should be replaced within 3,000 miles (4,828 km),to

avoid it for clogging.

Flywheel

Heavy rotating boy that acts as reservoir of energy. Acts as an energy bank between source of power & driven machinery.

Two distinct applications: 1. Power is supplied at uniform rate, while demand for power by driven machinery

is variable e.g. punch press.2. Power is supplied at variable rate, while requirement of driven machinery is at

uniform rate e.g. internal combustion engine.

Functions:I. Store & reduce energy when needed.II. Reduce power capacity of electric motor.III. Reduce amplitude of speed fluctuation.

Throttle

Mechanism by which the flow of a fluid is managed by obstruction to increase

or decrease engine's power.

In IC engine, throttle valve directly regulates the amount of air entering the

engine, indirectly controlling the charge.

Controlled with a throttle pedal or accelerator.

Throttle body is the part of the air intake system that controls the amount of air

flowing into the engine.

Throttle(Cont.)

It is located between the air filter box and the intake manifold. The throttle plate inside the throttle body, is a butterfly valve that regulates the

airflow & is placed on the entrance of the intake manifold.

Differential

Device capable of transmitting torque and rotation through three shafts. It

receives one input and provides two outputs, in automobiles.

In an automobile,it allows each of the driving wheels to rotate at different

speeds, while supplying equal torque to each of them.

Allows the driving road wheels to rotate at different speeds while cornering.

This is necessary while turning, making the wheel that

is travelling around the outside of the turning curve

roll farther and faster than the wheel that is travelling

inside.

Differential Gear Train on a Turning Car

The outer wheel traverses an arc with radius ro and the inner wheel traverses an

arc with radius ri. The lengths of the arcs traversed are so, sn, and si. The outer

arc so is larger than the inner arc si for a given traversed angle theta. Some way

of ensuring that the outer wheel is able to turn slightly faster than the inner

wheel ,in order to prevent binding and slippage of the tires on the road.

the automobile differential solves this

problem with only one transmission and

one drive shaft for both driven wheels.

Rolling Contact Bearing

Balls or rollers are introduced between surfaces that are in relative motion.

Serves the purpose of reducing rotational friction and support radial and axial

loads.

Applications:

Machine tool spindles.

Automobile front & rear axles.

Deep groove ball bearing

Radii of ball is slightly less than radii of curvature of grooves.

Advantages:

High load carrying capacity.

Takes load in radial & axial direction.

Less friction loss & temperature rise.

Generates less noise.

Operating conditions

Lifespan: calculated life for a bearing is based on the load it carries and its operating speed.

Failure modes: If a bearing is not rotating, maximum load is determined by force that causes

non-elastic deformation of balls. If that same bearing is rotating, that deformation tends to knead the ball into

roughly a ball shape.

Lubrication: It is needed for a bearing to operate properly. to increase lifespan of bearing, viscosity of lubricant is high.

GANTT CHART

Week 1

Week 2

Week 3

Week 4

Week 5

Week 6

02/06/2012

07/06/2012

12/06/2012

17/06/2012

22/06/2012

27/06/2012

02/07/2012

07/07/2012

12/07/2012

Industrial training

No. of days to complete

Thanks