[rao_battula]

Originally Posted by sanjaykk

Here it is. Its in malayalam. Transalation provided below.
Title: Mechanism to stop vehicles at signals

Bangalore: Bosch company has informed that it has developed a mechanism by which vehicle engines automatically switch off at signals and at traffic jams. Vehicles fitted with this mechanism from Bosch will switch off engines if idle for a fixed time. Subsequently, if the clutch is pressed, the engine will be functional again. The company clarified that by using this mechanism, apart from fuel savings, CO2 emission can be reduced by 8%.
</Translation>

Is there any mention of price and can this be fitted to our existing vehicles? Any reviews of the solution on web?

Link: Green Car Congress: Bosch Start-Stop System to Move to Series Production; Standard Equipment on BMW 1-Series


Some one claims that this is not by Bosch. Here is the excerpt from above link:

Hello,

The above mentioned text was sent by me. Here it is again:

The Automatic Start/Stop (and also the High Precision Injection) presented by Bosch and used by BMW are already invented by Telcopol Ltd (in Finland) and they are subject to their IPRs (patents) For more info see Telcopol email: vazvan@telcopol.com or b_vazvan@hotmail.com. So it sounds very funny that Bosch or BMW now claims to have developed such innovations. The concept of Volvo in 90's is not a practical neither economic solution. Bosch and BMW first must obtain a license from Telcopol in order to be able to sell cars having these technologies!

SAM


From Telcopol

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Mods: I have pasted the content it it bit hard to find out on the site.

-BSR

[Sahil]

Since my car does have the start stop button it often crosses my mind that I should be a good citizen and switch off the engine when the signal timer reads more than 100 seconds,as cranking the engine back is very quick thanks to the button.
However on the flipside i too believe that starting up an engine would consume more fuel and in addition more engine oil is also consumed.
Only a thorough exercise on this by an expert can help us decide

[asr245]

Originally Posted by Sahil

Since my car does have the start stop button it often crosses my mind that I should be a good citizen and switch off the engine when the signal timer reads more than 100 seconds,as cranking the engine back is very quick thanks to the button.
However on the flipside i too believe that starting up an engine would consume more fuel and in addition more engine oil is also consumed.
Only a thorough exercise on this by an expert can help us decide

From what I think, bigger the engine longer is the wait period required. Do those big diesel railway engines shut down during the stop period at a station? I think not. That's what my above statement is based on (however flawed it might be).

[Sahil]

dude how can you compare a train engine here?!? :

My 3 liter engine takes barely a second to start..if you must go into such comparisons a luna probably has the smallest engine in india on wheels and it takes a decade to start :

[nickatnite]

There is really nothing one can do other than let the engine idle. Stopping and starting will only result in more consumption as one member pointed out earlier. If there was a way to avoid this, then companies would have mass marketed this technology. There isn't or it hasn't been perfected yet.