1.5L REVOTORQ ENGINE 1 1.1 GENERAL INFORMATION A. ENGINE INTRODUCTION DESCRIPTION The “1.5L REVOTORQ” is a new generation 4 Cylinder 1.5L Common-Rail Turbocharger Intercooled Diesel Engine. This Engine is fitted with “Delphi” common rail system with 1600 bar injection pressure which is controlled by a 32 bit Electronic Control Unit (ECU).The Engine performance is optimized for various engine speed, load and operating conditions depending upon the various sensor’s inputs. The variable geometry turbocharger used on this engine works on Variable Turbine Technology having 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 fuel economy and emission has been optimized at source by means of low engine friction, faster engine warm up, centralized solenoid injectors, optimized combustion, CloseCoupled Catalytic Converter (CCC) 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 power train stiffeners and stiffened engine components, 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.
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