Idle Stop-Start Systems

Deivanayagam H,Mechanical Engineer,

Tirunelveli.

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.

Achievable ImprovementsIncreased fuel economy

Decreased emissions

SensorsEngine TemperatureExternal TemperatureCabin TemperatureBattery statusSteering angleSeat belt connectionBrake pedal positionAccelerator pedal position

SensorsClutch pedal position (non-hybrid)Gear shift (non-hybrid)Wheel speed

Temperature sensorsTo 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

Position sensorsTo find the positions of key parts of the

vehicleBrake 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

Other sensorsWheel 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