Typical Energy Expenditure %

[aerohead]

Originally Posted by Tahoe_Hybrid

this

There's a danger in this characterization of the energy breakdown,which needs to be emphasized.In the context of 'combined EPA cycles',and only within this context is this data correct.
In the real world, motorists might encounter what Wolf H. Hucho has attempted to emphasize since the mid-1970s;that out on the open road,of the power available to actually propel a vehicle,aerodynamic forces can absorb 80% or more of this power,depending on velocity.
The casual observer might be left with the impression that aerodynamics constituted only a minor fraction of the road load,which would be a gross under representation of reality.And an why an understanding of aerodynamics has failed to capture the minds of the motoring public.A recipe for disaster.

[redpoint5]

Yeah, I wasn't particularly happy with the breakdown here, but it is the first relevant reply to my question and seems useful.

1% on brake drag, huh?

Power steering is next to nothing now that hydraulic systems have been replaced by electric.

[aerohead]

Originally Posted by redpoint5

Yeah, I wasn't particularly happy with the breakdown here, but it is the first relevant reply to my question and seems useful.

1% on brake drag, huh?

Power steering is next to nothing now that hydraulic systems have been replaced by electric.

I've given you #17 permalink as to braking.Some of that was done at the national level as far as statistical analysis goes.

[redpoint5]

Originally Posted by aerohead

I've given you #17 permalink as to braking.Some of that was done at the national level as far as statistical analysis goes.

I guess I forgot about that one, perhaps because it didn't seem realistic to me. 33.5% lost to braking?

I should watch an EPA cycle someday. 10% braking on the highway is absurd. Only time I touch the brakes on the highway is if someone cuts me off.

[Tahoe_Hybrid]

Originally Posted by redpoint5

Yeah, I wasn't particularly happy with the breakdown here, but it is the first relevant reply to my question and seems useful.

1% on brake drag, huh?

Power steering is next to nothing now that hydraulic systems have been replaced by electric.

it's different on the hybrid model of the same SUV shown, as there is still some DIY improvements on the hybrid model that could take it down to 0.30 from 0.34 (the one shown is 0.367 or 0.38) considerable improvement over the previous model design which is 0.45 and the model design before that was 0.55 or higher (think square box shape)... the 2015 models are 0.34 as well as the 2021 model .


the 2015 only had a 2mpg gain going from the 2014 to the 2015 model.... and that gain is from the 8 or 10 speed transmission mostly..

Originally Posted by redpoint5

I guess I forgot about that one, perhaps because it didn't seem realistic to me. 33.5% lost to braking?

I should watch an EPA cycle someday. 10% braking on the highway is absurd. Only time I touch the brakes on the highway is if someone cuts me off.

heavy footed drivers