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E ND | I think the old "CVT's drain power" is just a wive's tale going back to hydro's and other attempts at it. In the AGCO CVT there is a hydrostat component of how it varies the power delivery and speed but from my understanding of that system it's never actually transferring power hydrostatically except in reverse.
Powershifts have a lot of moving parts and parasitic loss in their own rite, so is there a difference there? Not really sure but I think it's pretty negligible.
The CVT's are definitely able to "find" more power and productivity in the gaps in speed and pulling power in a powershift transmission and let the logic in the engine lug it down into the ideal powerband, a decision usually left to the operator in a powershift. Unless you've studied the torque curves and are an engineer, it's pretty hard to get that right 100% of the time! They'll handle variable loads throughout the field more efficiently and get more done in a day when you're not hunting for the right gear or settling for a gear that's not quite fast enough to use the HP.
If you have an application that requires max HP and super consistent ground conditions, you could just as well have a powershift. | |
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CVT/ IVT vs powershift
