256 / 1131
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,
Close-
Coupled 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.