Quote:
Originally Posted by robchalmers
sorry lads, I know load isn't proportional to throttle, i think my brain wasn't fully connected to my fingers when typing out my reasoning . from the Bgraphs you can see the sweet spot for each graph around round the 1500-2500 range. what I was trying to explain was its not ALWAYS great to grab the next cog as early as poss. Take the 2.0l zetec graph
the way i was taught to read Bgraphs is that at 245@2000you produce 145nm-ish of torque but if you're running 1000rpm you need to be putting in 320g to create the same 145 nm-ish of torque. Now its been a few years since doing thermodynamics so if I've got that wrong please tell me so i don't look too much of a idiot!  |
Yeah, you're reading it right, except that it's also proportional to gearing. You don't need 145NM of TQ to keep going down the road at 35MPH, so you're still burning less fuel.
Just being more efficient doesn't necessarily mean burning less fuel. It just means getting more work generated out of the fuel you're burning.
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