View Single Post
Old 10-06-2014, 04:13 PM   #9 (permalink)
adam728
EcoModding Apprentice
 
adam728's Avatar
 
Join Date: May 2008
Location: Michigan
Posts: 161

Mazda3 - '08 Mazda 3 S
90 day: 29.65 mpg (US)

DR650SE - '13 Suzuki DR650SE
90 day: 46.16 mpg (US)

Wife's - '12 GMC Terrain SLE-2
Thanks: 2
Thanked 22 Times in 18 Posts
Quote:
Originally Posted by Fat Charlie View Post
If you're engine braking and bringing yourself closer to the point where you have to get back on the gas, you are using fuel. It just doesn't look like it at the moment.
If injectors are not firing, and no fuel is being burned, how do you use fuel, but it doesnt look like it at the moment? Maybe you worded this differently than you meant it.


I do understand that engine off coasting in neutral is best as an overall efficiency sort of thing. My Mazda is a prime example, lift your foot off the gas at 55 and the short gearing engine brakes you to 35 (injectors off the whole time) in the same distance that it would coast down to only 47-48 mph or so in neutral. So I'll actually have to get back on the throttle to make it to the intersection on the way to work, using more gas than an engine off neutral coast would. But that still doesn't mean its burning fuel while coasting down.
__________________
  Reply With Quote