Timeline for Optimal RPM range for manual transmission
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 1, 2016 at 17:44 | vote | accept | amphibient | ||
| Mar 1, 2016 at 10:46 | comment | added | I have no idea what I'm doing | I thought an engine runs most efficiently at the peak of it's torque? | |
| Feb 28, 2016 at 1:18 | comment | added | krthkskmr | By fuel efficiency, I mean the amount of mechanical work that can be done by the engine from the fuel consumed. I am isolating the system to the engine because outside of this, too many factors come in to play. You are right, about the lambda sensor, in fact, ECUs can even attempt to compensate for the change in RPM but the system is not perfect because multiple other factor come into play again, like air temperature, altitude etc. I confined the answer to these conditions since they were sufficient to answer the question. | |
| Feb 27, 2016 at 14:38 | comment | added | sweber | Nice answer, but: What exactly do you mean by fuel efficiency? It usually means how much mechanical work you get out of a certain amount of fuel. It is about at the RPM of max torque. But it is not equal to best milage, which usually means low RPM. Efficiency is not so good there, but the low RPM means low fuel consumption. Another point: I guess an ECU knows that there's less air than expected in the cylinder. It also knows if the ratio is correct from the lambda sensor. So, no unburned, wasted fuel. | |
| Feb 27, 2016 at 10:05 | history | edited | krthkskmr | CC BY-SA 3.0 |
Fixed grammatical errors.
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| Feb 27, 2016 at 2:28 | history | answered | krthkskmr | CC BY-SA 3.0 |