Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 04-01-2017, 03:57 PM   #11 (permalink)
Master EcoModder
Stubby79's Avatar
Join Date: Sep 2012
Location: Victoria, BC
Posts: 1,747

Firefly EV - '98 Pontiac Firefly EV
90 day: 107.65 mpg (US)

Little Boy Blue - '05 Toyota Echo
90 day: 33.35 mpg (US)

BlueZ - '19 Nissan 370Z Sport
90 day: 17.19 mpg (US)
Thanks: 75
Thanked 576 Times in 426 Posts
Originally Posted by jamesqf View Post
Have I missed something here? All the BSFC graphs I see seem to show that the engine is less efficient at low RPM & higher load.
High load = good. Low load = bad.

You're rarely going to be working in the optimal range/load -- you don't need the 50+ hp being generated to cruise along at normal speeds -- so the next best thing you can do is to run at the lowest RPM that will give you a decent load (~80%, above which most engines tend to run rich).

The more energy the engine can create per stroke (without running rich), the more efficient it is going to be. If you're making 10hp @ 1500 rpm, you're a lot more efficient than making it at 3000.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Reply  Post New Thread

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com