What does this TDI means

We all have seen some of the car has written TDI on their back.
What does this TDI means?

Here you know-

Turbocharged Direct Injection(TDI):

Turbocharged Direct Injection or TDI is a design of turbodiesel engines, which feature turbocharging and cylinder-direct fuel injection,developed and produced by the Volkswagen Group.

TDI engine uses direct injection,where a fuel injector sprays atomized fuel directly into the main combustion chamber of each cylinder,rather than the pre-combustion chamber prevalent in older diesels which used indirect injection. The engine also uses forced induction by way of a turbocharger to increase the amount of air which is able to enter the engine cylinders,and most TDI engines also feature an intercooler to lower the temperature (and therefore increase the density) of the 'charged', or compressed air from the turbo, thereby increasing the amount of fuel that can be injected and combusted.

Cars using this technology includes Audi R10 TDI,Volkswagen Polo 1.6 TDI,Tata Indigo eCS LX TDI ,Tata Indica Vista Terra TDI ,Audi Q7 3.0 TDI and many more.

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INJECTOR PRESSURE

Q. What is an INJECTOR PRESSURE in heavy vehicles? Why it is used?

A. Injector pressure i s the pressure at which the fuel can be injected into the vehicle. In heavy vehicles, injector pressure is 220 kg/cm square. It is used to set up the standard fuel injection in the vehicles. With the help of injector pressure we can calculate the amount of fuel needed, through the following formula:
Est. Horsepower x B.S.F.C / No. of injectors x duty cycle = lb/hr per injector
cc = lb/hr x 10.5

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V-ENGINE

V-ENGINE-

A "V" engine, or Vee engine is a common configuration for an internal combustion engine. The cylinders and pistons are aligned, in two separate planes or 'banks', so that they appear to be in a "V" when viewed along the axis of the crankshaft. The Vee configuration generally reduces the overall engine length, height and weight compared to an equivalent inline configuration.

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The difference between disc brakes and drum brakes.

The difference between disc brakes and drum brakes.

Disc brakes are generally considered superior to drum brakes for several reasons. First, they dissipate heat better (brakes work by converting motion energy to heat energy). Under severe usage, such as repeated hard stops or riding the brakes down a long incline, disc brakes take longer to lose effectiveness (a condition known as brake fade). Disc brakes also perform better in wet weather, because centrifugal force tends to fling water off the brake disc and keep it dry, whereas drum brakes will collect some water on the inside surface where the brake shoes contact the drums.

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Regenerative Braking :

It is used on automobiles to recoup some of the energy that is lost while the vehicle is stopping.This technology is used on hybrid vehicles that use both gas and electricity as sources of power. The energy that is recouped during braking is saved in a storage battery and used later to power the motor whenever the vehicle is using its electric power source.

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Piston Ring

A piston ring is a split ring that fits into a groove on the outer diameter of a piston in a reciprocating engine such as an internal combustion engine or steam engine.

The three main functions of piston rings in reciprocating engines are :

Sealing the combustion chamber so that there is no transfer of gases from the combustion chamber to the crank.

Supporting heat transfer from the piston to the cylinder wall.
Regulating engine oil consumption.

The gap in the piston ring compresses to a few thousandths of an inch when inside the cylinder bore.

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Automotive Braking System

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Fuel Pump

Fuel Pump- It is a device which is used to lifts the fuel from the fuel tank and supplies to the carburetor.

PURPOSE- As we know that there are two methods of feeding the fuel to the engine the first one is gravity method and the other one is under pressure. In the gravity system, the fuel tank is located at a higher level, so that the fuel flows to the engine with the force of gravity and in this case the fuel pump is not required, as in Scooters, Motorcycles etc. But in the pressure system the fuel is drawn by the FUEL PUMP through the filter, Like in Motor Cars and other Automotive Engines

What will happen if someone adds oil to the fuel of four stroke bike engine?


This will result in damaging of the engine faster. Adding oil will lead to the higher wear and tear of the cylinder liner, piston and damage to the piston. It will lead to abnormal combustion and knocking and detonation. Dark smoke and abnormal sounds will be generated by the engine. One should not mix oil with the fuel of four stroke engine.

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THERMAL ENGINEERING-I

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Suspension system:
Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels and allows relative motion between the two.[1] Suspension systems serve a dual purpose — contributing to the vehicle's roadholding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants comfortable and reasonably well isolated from road noise, bumps, and vibrations,etc.
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THERMAL ENGINEERING -1

SI ENGINE

2-STROKE Vs 4-STROKE

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