HEXA

ENGINE 76 Distinct Features of VARICOR System :  The VARICOR System is powered by 2.2 L VARICOR engine which uses contemporary Delphi 1600 bar fully-electronic Common Rail Injection system.  In case of engine getting overheated, ECU reduces the power of the engine as a precaution from getting damaged.  Fault detection – ECU constantly monitors the functioning of various sensors & actuators and detects the faults generated in the system & indicates the status of fault via the “MIL” lamp.  Corrections for different environmental conditions such as hot climate, cold climate & altitude. VARICOR engine adjusts automatically to suit variation in external environment conditions.  Cylinder balancing: The engine speed is well balanced by reducing cyclic variations in the engine as all the injectors/Injection parameters are precisely controlled by ECU.  Anti-Oscillation Strategy (AOS): Jerks during sudden accelerations on ARIA VARICOR has been minimized by using this strategy. The engine speed, vehicle speed & gear change is continuously monitored & adjustments are made in such a way to enhance driving pleasure. ADVANTAGES OF A VARICOR TECHNOLOGY  Electronically controlled fuel injection system  High pressure injection (1600 bar) for better emissions & pilot injection for good NVH.  Improved Power and Torque throughout engine speed range  Excellent drivability.  Improved Gradeability /Restart ability·  Excellent cruising ability Lower fuel consumption  Improved noise characteristics during cruising  Smoother running & enhanced driving pleasure  Cleaner exhaust  Less CO and particulate emissions. ECU : The Electronic control Unit is a 32 bit microprocessor which controls the injection parameters ( Fuel System) as well as some of the vehicle related outputs such as Fan, AC drivability in gears, variable nozzle turbine (VNT) turbocharger, EGR Control module etc. NOTE  For ECU details please refer Engine Section of this manual. VARICOR System Cleanliness Instructions : Follow the below recommended cleanliness procedures before removal of any common rail system components: This is to prevent dust entry in the system and to avoid damage to the accurately machined common rail system components·  Wash hands before the work. If necessary wear new plastic gloves.  As soon as there is an opening into the system, it must be blocked using special cap. After removal and plugging, each component of the injection system must be stored in a new hermetically sealed bag.  All plugs / caps and packaging are disposable and should be discarded after single use.  Before disconnecting the battery make sure that no data is required from the electronic control unit  (ECU), as battery cable disconnection will erase any fault codes and idle / drive values held in the keep alive memory (KAM). It is not necessary to disconnect or remove electronic control modules.  Disconnect the battery ground cable.  Follow the cleanliness and safety instructions and use the correct tightening torques.  Once the engine stops wait for 5 min then start working on the CR system. Do not work on the injection system with the engine running.  After opening the injection circuit it is strictly forbidden to use any tools/ equipment made of a material which may cause a risk of shedding particles or fibers (wood, cloth, cardboard…). In the same way, the use of a blower, brush or bristles is banned because these tools are liable to introduce contaminants into the system.