TDI ENGINE.pptx

TDI 2L Diesel Engine

1. VOLKSWAGEN TDI ENGINE

2. CONTENT Introduction & History History & Motor Racing Direct & In-direct Injection Forced vs Free Injection OHV vs OHC Engine 2.0 TDI Turbo Lag

3. INTRODUCTION TDI  (Turbocharged Direct Injection) is a marketing term used by  Volkswagen Group  for its  turbocharged   diesel engines  that have an  intercooler  in addition to the turbo compressor.

4. HISTORY Volkswagen’s first turbocharged 5-cylinder diesel engine was used in 1978 in Mercedes-Benz 300SD In 1 986 Fiat Corma was the first car to come with Volkswagen’s 2.0L diesel engine. Volkswagen Group's first TDI engine was introduced in the 1989  Audi 100 TDI sedan .

5. MOTOR RACING The first TDI engine used by Volkswagen Group for motor racing was in the  Audi R10 TDI , which competed in 24 hours of Le Mans Race and recorded a victory. In the nine years from 2006 to 2014, the Audi R10 and its successors ( R15   and R15 ) won the 24 Hours of Le Mans eight times

6. DIRECT and INDIRECT INJECTION Direct Injection When a fuel injector sprays the diesel fuel directly into the main combustion chamber, which therefore increases the torque output and has a 10–15% lower fuel consumption. In-Direct Injection When f uel goes into a pre-combustion chamber (instead of main combustion chamber) or an air cell to begin the process that then spreads into the main combustion.

7. FORCED vs FREE INJECTION Free Injection Fuel mixture is injected into the combustion chamber at pressure equal or nearly close to atmospheric pressure. Those engines are known as Naturally Aspirated Engines. Forced Injection Fuel mixture is injected into the combustion chamber at very high pressure by means of turbo or superchargers to get more power and torque from engine.

8. TURBO vs SUPERCHARGER Turbo-Charger Exhaust gases are used to run turbine which then rotates compressor to compress air to increase its pressure. Super-Charger The compressor is run by getting torque from engine Fly-Wheel using belt and pulley mechanism which then compresses the air to increase its pressure.

9. SV vs OHV engines Side Valve Engine Intake and exhaust valve are located on the side of combustion chamber of the cylinder. Most 2-Stroke engines had this configuration. Insensitive to low octane fuel L ow mechanical engine noise S implicity, reliability and low cost Over Head Valve Engine In such type of engines, intake and exhaust valves are fitted on the top of cylinder head. H igher low-end torque Compact size High power output

10. SC vs OHC ENGINE Side CAM Engine In such type of engines, cams are located below the head of engine and on the side of combustion chamber and push rods are used to operate Valves. Over Head CAM Engine In these engines cams are located above the head of engine in direct contact with valve. There is no need for using push rods in such engines.

11. Turbo Lag Turbo-charger needs a certain gas pressure to work, only available when engine revs are high enough. To avoid this, variable turbine geometry (VTG) turbocharger is used. Low Rpm Narrow cross section area of exhaust. High Rpm Larger cross section area of exhaust.

12. 2.0L DIESEL ENGINE It’s a 4-Cylinder Inclined DOHC Diesel Engine. It produces 180Hp @4000 RPM. 360 Nm of torque @2500 RPM.

13. 2.0L DIESEL ENGINE It’s a turbo-charged engine equipped with intercooler to cool down compressed air. Consumable fuel is diesel. Equipped with Common-Rail (third generation direct diesel injection). Diesel Particulate Filter DPF are installed which are very effective in cutting emissions, making advanced engines much cleaner than older engines. Equipped with VTG system to avoid turbo lag.

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