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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.