View Single Post
Old 10-15-2013, 08:49 AM   #27 (permalink)
niky
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 2,173
Thanks: 1,739
Thanked 589 Times in 401 Posts
Quote:
Originally Posted by euromodder View Post
It's clever, but it wouldn't last overnight as the engine cools off.
Oh, definitely not. The capacitor charge won't even last within the day.

Quote:
Originally Posted by euromodder View Post
My car also re-starts rather easily, and within the time it takes to get the clutch pedal to the floor, but that's probably due to it being only 1L
The difference here is SkyActiv doesn't put much stress on the starter or battery due to the way it "primes" itself to fire. How much stress is avoided, however, is not known.

Quote:
Originally Posted by euromodder View Post
The max. charge is always limited to what the battery will hold.
Even without AC or radio on, it's still limited to what the manufacturer put in as excess battery capacity - which is also costing mileage (weight, recharging).
A few stop/starts too soon after one another, and the engine stays on as the battery's reserve capacity gets too low.

When coasting down, it's not using regenerative braking either.
Mazda doesn't use a big battery pack. It's funny, actually, that it seems to have more stored up "stop time" than the CR-Z in similar conditions. The CR-Z has a battery pack taking up two-thirds of the otherwise humongous GE chassis rear cargo box.

The Mazda6, on the other hand, claims a lighter curb weight than its competitors, and if the capacitors take up any trunk space, it's hard to see where. Whereas with something like an Optima hybrid, you've got a lot of chunky hardware eating into the trunk.

Quote:
Originally Posted by euromodder View Post
Stop/start is rather tedious in that kind of situation.
By the time it shuts down , it often has to restart again .
One'd be better off trying to keep rolling, even coasting engine on.
There's a deactivation switch, but after trying it both ways, I left i-stop on. Didn't mind the shutdown... and it seemed to do more good than harm (as per the onboards... testing it out full-tank to full-tank would have taken more days than I had with the car). Simply applying less pressure on the brakes kept it from going off at stops I thought would be too short.
  Reply With Quote
The Following User Says Thank You to niky For This Useful Post:
MetroMPG (10-15-2013)