ENGINE INTRODUCTION The 2.2 L VARICOR engine used on this vehicle is a state of art modern Direct Injection Common Rail diesel unit. This engine is using twin overhead camshafts and 16 valves which help in good breathing. Delphi common rail diesel injection system with 1600 bar injection pressure is used and controlled by a fast 32-bit electronic control unit. The engine performance is optimized for various engine speed, load and operating conditions depending upon the various sensors input. The turbocharger (VTT) used on this engine works on Variable Turbine Technology (VTT) has low inertia of turbine and compressor wheels which reduce the turbo lag at low engine speeds and improves the transient response of the vehicle. This turbocharger incorporates many movable vanes in the turbine housing to control the exhaust flow against the turbine blades which enables higher power, torque, lower fuel consumption and emissions of the engine. The actuation of the vane angle is done electrically by the EMS The fuel economy and emission has been optimized at source by means of low engine friction, faster engine warm up, centralized injectors, optimized combustion, closed coupled catalytic converter, closed loop operation of the turbocharger (VTT) etc. Hydraulic Lash Adjusters and Roller Finger Followers are used for maintenance free quiet operation and reduced friction. Toothed belt drive with automatic belt tensioner is used for quiet engine operation for longer period. The engine NVH is optimized by means of optimized engine mounts, multiple injection strategy etc. The engine weight has been optimized by using Aluminum cylinder head, gallery cooled piston, non-linered cylinder block with spherical skirt, superior alloy material for high strength. The CCC (Close Coupled Catalytic Converter) is fitted in this vehicle to further reduce the emissions. The CCC filters harmful carbon particles before they leave the exhaust.
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