And The Phrase” The Sun Is On…!” Hurts..!

It is the day that i have awaited more than My 20th B’day. Ofcourse i dint worked that hard to deserve anything!

TORQUE_ A Technical Orchid……..Quest for Excellence is the event that i have wauted for.!The last event in the year 2011 in UCE…!

Initial hiccups couldn’t deter the determined organizers from conducting the event.!With a modest support from the department and a meagre amount of Rs.20,000/- funds!

I still wonder how these guys had managed such an event to fare far better than other events in University!

The very first day saw many fresh faces in department…

Enormous inflow of new waters flooded into old still waters.

With a big question mak on my face i continued to wonder ” Will it be a success..?”

There isn’t even a single instant from which i could learn nothing right from the startig of inagural function to the last word of Thanks gving speech of Valedictory!

Its alwaz irritating to sit in an audi hearing to some blah blah…of eminent speakers with all doors either closed or guarded by some self proclaimed coordinators.!

Somehow they got crowd for that Inagural!

I have managed to escape to stalls.!

I was participating in every torque…

This is my 3rd Torque and 3rd time i have been in stall!

When i was in 1st yr we dint celebrated even though we got some profits….!!

But as the time gre my mind started transforming and i found that celebration of every possible ocassion will be the essence of Engineering life.!

3 different teams in 3 Torques!

Ofcourse i(We) have started celebrating in 2nd yr!

The cricket fever which was feared of was perfectly battled!

Achievable target and dogged performance from Men In Blue and of course some luck of Mr.Cool MSD could have costed us dearly.!

But thanks to performers who kept the audience to glue to their chairs.!

U happened to be computer operator for that day’s culturals ” ROCK ON”

Very close to stage!

I Torque-10 It was ” MY Love Is Gone”

And In Torque-11 It was MJ’s ” DANGEROUS”

Everyone is going crazy of MJ these days….

I feel that MJ fever is still on even though MJ Departed.!

And the thing i came to know

and which has adrenalized my thoughts of organising a whole college event is That JNTU is under transformation!

I’m in the university since 3 yrs…

But i haven’t spotted A Jr Anchoring an Event…

Thanks to all enthusiastic jrs….

I expect their cooperation for whole college Techno-Cultural Fest!

And the other thing is A Boy and Girl from same class dancing together on same stage…!!

A welcomed sign for a world class university!

And the good news came by air in the midst of celebration that Men In Blue had edged Kangaroo’s out of CWC-11

Thunderous applause to MIB rocked the Whole university campus…!

Finally the show halted at 1:00 am

for the next few hours i have slept and when i woke up i found the Sun is Just on….

Another day of surprises is waiting!

SKYACTIV TECHNOLOGY

Highlights of the SKYACTIV technologies:

• SKYACTIV-G: a next-generation highly-efficient direct-injection gasoline engine with the world’s highest compression ratio of 14.0:1
• SKYACTIV-D: a next-generation clean diesel engine with the world’s lowest compression ratio of 14.0:1
• SKYACTIV-Drive: a next-generation highly-efficient automatic transmission
• A next-generation manual transmission with a light shift feel, compact size and significantly reduced weight
• A next-generation lightweight, highly-rigid body with outstanding crash safety performance
• A next-generation high-performance lightweight chassis that balances precise handling with a comfortable ride

– First product to be equipped with SKYACTIV technology will be a Mazda Demio featuring an improved, fuel-efficient, next-generation direct-injection engine that achieves fuel economy of 30 km/L.

Overview of the SKYACTIV technologies

1. SKYACTIV-G

A next-generation highly-efficient direct-injection gasoline engine that achieves the world’s highest gasoline engine compression ratio of 14.0:1 with no abnormal combustion (knocking)

• The world’s first gasoline engine for mass production vehicles to achieve a high compression ratio of 14.0:1
• Significantly improved engine efficiency thanks to the high compression combustion, resulting in 15 percent increases in fuel efficiency and torque
• Improved everyday driving thanks to increased torque at low- to mid-engine speeds
• A 4-2-1 exhaust system, cavity pistons, multi hole injectors and other innovations enable the high compression ratio

2. SKYACTIV-D

A next-generation clean diesel engine that will meet global emissions regulations without expensive NOx after treatments — urea selective catalytic reduction (SCR) or a Lean NOx Trap (LNT) — thanks to the world’s lowest diesel engine compression ratio of 14.0:1

• 20 percent better fuel efficiency thanks to the low compression ratio of 14.0:1
• A new two-stage turbocharger realizes smooth and linear response from low to high engine speeds, and greatly increases low- and high-end torque (up to the 5,200 rpm rev limit)
• Complies with global emissions regulations (Euro6 in Europe, Tier2Bin5 in North America, and the Post New Long-Term Regulations in Japan), without expensive NOx after treatment

3. SKYACTIV-Drive

A next-generation highly efficient automatic transmission that achieves excellent torque transfer efficiency through a wider lock-up range and features the best attributes of all transmission types

• Combines all the advantages of conventional automatic transmissions, continuously variable transmissions, and dual clutch transmissions
• A dramatically widened lock-up range improves torque transfer efficiency and realizes a direct driving feel that is equivalent to a manual transmission
• A 4-to-7 percent improvement in fuel economy compared to the current transmission

4. SKYACTIV-MT

A light and compact next-generation manual transmission with crisp and light shift feel like that of a sports car, optimized for a front-engine front-wheel-drive layout

• Short stroke and light shift feel
• Significantly reduced size and weight due to a revised structure
• More efficient vehicle packaging thanks to its compact size
• Improved fuel economy due to reduced internal friction

5. SKYACTIV-Body

A next-generation lightweight, highly-rigid body with outstanding crash safety performance and high rigidity for greater driving pleasure

• High rigidity and lightness (8 percent lighter, 30 percent more rigid)
• Outstanding crash safety performance and lightness
• A “straight structure” in which each part of the frame is configured to be as straight as possible. Additionally, a “continuous framework” approach was adopted in which each section functions in a coordinated manner with the other connecting sections
• Reduced weight through optimized bonding methods and expanded use of high-tensile steel

6. SKYACTIV-Chassis

A next-generation high-performance lightweight chassis that balances precise handling with a comfortable ride feel to realize driving pleasure

• Newly developed front strut and rear multilink suspension ensures high rigidity and lightness (The entire chassis is 14 percent lighter than the previous version.)
• Mid-speed agility and high-speed stability — enhanced ride quality at all speeds achieved through a revision of the functional allocation of all the suspension and steering components

DISI ENGINE

In developing the DISI engine, we aimed to cool the interior of the cylinder as much as possible by promoting fuel vaporization and uniform mixing of atomized fuel and air. This produces a high charging efficiency of the air-fuel mixture and a high compression ratio, which results in significant improvements in both torque and fuel efficiency.

Characteristics of the direct injection engine:

• Fuel is injected from a tiny nozzle into a relatively large cylinder, so it has a high latent heat of vaporization, which efficiently cools the air within (in-cylinder cooling effect).

• The air temperature in the cylinder decreases, which means:

• (1) more air may be charged into the combustion chamber, which produces increased torque.

• (2) the engine is less prone to knocking. This contributes to increased torque, and enables a higher compression ratio that also contributes to good fuel efficiency.

In a direct injection engine, however, the fuel skips the waiting period it would have to endure inside a standard engine and instead proceeds straight to the combustion chamber. This allows the fuel to burn more evenly and thoroughly. For the driver, that can translate to better mileage and greater power to the wheels.

In the past, direct injection posed too many technical hurdles to make it worthwhile for mass market gasoline automobiles. But with advances in technology and greater pressure to make cars run more cleanly and efficiently, it looks as if gasoline direct injection — or GDI as it’s referred to in industry lingo — is here to stay. In fact, most of the major car manufacturers make or plan to soon introduce gasoline cars that take advantage of this fuel saving and performance enhancing system.

INTERVIEW QUESTIONS:GERNAL:

• Explain the Second Law of Thermodynamics.
  The entropy of the universe increases over time and moves towards a maximum value.

 

• How do you measure temperature in a Wet Bulb Thermometer?
  Wet bulb temperature is measured in a wet bulb thermometer by covering the bulb with a wick and wetting it with water. It corresponds to the dew point temperature and relative humidity.

 

• What is Bending moment?
  When a moment is applied to bend an element, a bending moment exists in the element

 

• What are the points in the Stress Strain curve for Steel?
  Proportional limit, elastic limit or yield point, ultimate stress and stress at failure.

 

• Define Reynolds number.
  Reynolds number is the ratio of inertial force and viscous force. It is a dimensionless number. It determines the type of fluid flow.

 

• What is a Newtonian fluid?
  A Newtonian fluid possesses a linear stress strain relationship curve and it passes through the origin. The fluid properties of a Newtonian fluid do not change when any force acts upon it.

 

• How many Joules is 1 BTU?
  1 BTU is equal to 1055.056 joules.

 

• What is PS?
  PS is Pferdestarke, the German unit for Horsepower.

 

• Explain Otto cycle.
  Otto cycle can be explained by a pressure volume relationship diagram. It shows the functioning cycle of a four stroke engine. The cycle starts with an intake stroke, closing the intake and moving to the compression stroke, starting of combustion, power stroke, heat exchange stroke where heat is rejected and the exhaust stroke. It was designed by Nicolas Otto, a German engineer.

 

• Explain the nomenclature of a 6203-ZZ bearing.
  6 is the type code, which shows it is a single-row ball bearing, 2 is the series, means light, 03 is the bore, which is 17 mm and ZZ is the suffix meaning double shielded bearing.

 

• What is Gear ratio?
  It is the ratio of the number of revolutions of the pinion gear to one revolution of the idler gear.

 

• What is Annealing?
  It is a process of heating a material above the re-crystallization temperature and cooling after a specific time interval. This increases the hardness and strength if the material.

 

• Define Torque.
  Torque is defined as a force applied to an object that results in rotational motion.

 

• What is Ductile-Brittle Transition Temperature?
  It is the temperature below which the tendency of a material to fracture increases rather than forming. Below this temperature the material loses its ductility. It is also called Nil Ductility Temperature.