Fuel Consumption Improvement of Vehicles by Idling Stop

Investigation has been carried out for the effect of the idling stop for a short time when stopping by the traffic signal. The amount of the fuel consumption by the idling stop is formulated by the following equations.

Where

Fs

Saved fuel consumption (cc),

I

Fuel consumption during idling (cc/s),

Tis

Period during the idling stop (s),

S2

Additional fuel consumption by restarting the engine (cc),

S3

Energy consumption at the battery for starting, in fuel consumption equivalence (cc),

Nis

Frequency of idling stop.