NANO

GENERAL 2 Performance:  Fully electronic sequential fuel injection system in both CNG and gasoline modes.  Distributor less Grouped Ignition (Wasted Spark Ignition)  Minimum power drop in CNG, close to theoretical values.  Specific ECU tuning for petrol and CNG. 1. Dual independent spark advance management (knock, drivability etc). 2. Dual air-fuel ratio control and management (lambda close loop control). 3. Emission control strategies specific to petrol and CNG.  Fuel cut-off during decelerations  Dedicated and independent engine over speed control.  Smooth transition from petrol – CNG – petrol.  Transition to petrol in case of misfire detected in CNG mode & vise versa.  Accessory load compensation for smooth idle. 1. Alternator load 2. Power steering load 3. Air conditioner load 4. Cooling fan load  Transition management based on : 1. Driver’s request: Petrol – CNG- petrol 2. Fault diagnosis: CNG – petrol & Petrol - CNG 3. Empty CNG tank detection: CNG-petrol & Petrol - CNG Additional Features  Warm up Corrections  Mode Based transient injection control  Model based transient ignition control  Model based air/water temperature compensation  Limp home and recovery  Adaptive fuel injection control  Catalyst light-off control during engine warm up  Altitude compensation  Engine Knock Control  Fuel Pump relay Control  Post Ventilation – Fan control 4. GENERAL INSTRUCTION / PRECAUTIONS WHILE WORKING ON CNG VEHICLE: In Workshop  Provide safe locations for parking and working e.g. away from openings in the ground like drains and pits, and sources of ignition  Clearly identify each CNG vehicle, e.g. with suitably positioned signs, as a reminder to people working on the vehicle, and anyone in the vicinity, especially those who may be carrying out ‘hot work’ (welding, burning, infrared heating etc.)  Provide plant and equipment that is suitable for its intended use;  Do not take vehicles with leaking CNG systems inside a workshop or other building, as dangerous concentrations of vapors could accumulate;  Trained staff on what to do in an emergency.  Wear suitable personal protective equipment (PPE) to prevent cold burns, eye damage and the discharge of static electricity;