The Idle Stop-Start System is a low cost method for increasing fuel economy and decreasing emissions. It can reduce CO2 emissions by up to 3.5%

1. Deivanayagam H,
Mechanical Engineer,
Tirunelveli.

2. Brief working of the system
 Turns off the engine when the vehicle stops for a
short interval of time especially in traffic
congestion or in traffic signals
 Engine get restarted automatically when the
vehicle is ready to move.

3. Achievable Improvements
 Increased fuel economy
 Decreased emissions

5. Sensors
Engine Temperature
External Temperature
Cabin Temperature
Battery status
Steering angle
Seat belt connection
Brake pedal position
Accelerator pedal position

6. Sensors
Clutch pedal position (non-hybrid)
Gear shift (non-hybrid)
Wheel speed

7. Temperature sensors
 To record the temperature in various parts with the
assistance of respective temperature sensors
 Will help engine to avoid cold start by maintaining
Engine in the apropos temperature range

8. Position sensors
 To find the positions of key parts of the vehicle
 Brake pedal and acceleration pedal positions helps
the system to ensure that the engine is at rest or in
motion.
 Clutch pedal position and gear shift to find
whether the car is in gear or neutral

9. Other sensors
 Wheel speed sensor to measure the speed and to
send appropriate signal to the system
 Battery status sensor to signal the system about
the back up in the battery which is mandatory to
restart the engine comfortably
 Seat belt connection sensor is to ensure safety