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Old 10-15-2012, 11:09 AM   #253 (permalink)
Piwoslaw
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Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
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Quote:
Originally Posted by AndrzejM View Post
I'm thinking... If water pump will be electric, and the water flow should be the same there's no point in this because power that mechanic pump will use will be less than electric.
But the pump's flow doesn't have to be the same, in fact most of the time it can be less, for example during warmup. Also, at higher engine rpms the water flow isn't greater, since the pump just starts cavitating, losing energy with no gains.

The speed of an electric pump can be regulated as needed - it depends on engine load & temperature, not rpms.
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