h a l f b a k e r yThis would work fine, except in terms of success.
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Some CVTs offer the driver the option to manually select several pre-set ratios like a manual transmission.
Instead, why not have a manually controlled sliding lever so you can retain control of gear ratios but still have an infinite ammount of ratios. This would allow compression braking and other
features not available on an automatically-controlled CVT.
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One of the most impressive things to me about the CVT is its ability to "hold back" the vehicle on downhill sections of road. Even with only six preset ratios, it works like a charm. |
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I really am not sure that I'd get much out of having the slider. As the terrain changes, you'd still have to be moving the shifter around to fine tune the ratio. It might be overkill. I'd try it though. |
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Indeed [half], I've got a 1.0 Micra with CVT and it does an excellent job of maintaining a steady speed when u're going downhill. However, [Pa've], my rather primitive CVT computer doesn't allow me to use the car's maximum power; if I floor it just goes straight up to the red line where it develops no torque whatsoever, it won't allow the engine to run at either peak torque or peak power with full throttle. |
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The idea of manually controlling the CVT ratio is certainly interesting but it'd be a hell of a lot of work; my car reacts to every movement I make on the gas pedal so you'd end up being like a helicopter pilot, having to work 3 things at once. |
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I have considered this is the past. It would require relearning how to drive to some extent but would be very interesting. I think a decent onboard computer would be (will be?) the better solution in the end. |
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I should have said, this idea would be mainly for racing or sports car applications, where you want total control of every part of the car, without any computer interfering. For everyday applications, a computer would be the best controller. |
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"...control of every part of the car, without any computer interfering.", ooh-ooh do the fuel injectors next. |
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[half], we could also manually retard and advance the spark like motorcycles in the 40s. |
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I believe the advantage of a CVT is that the proper ratio is selected automatically? |
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Actually the advantage of a CVT is that it can create an infinite number of gear ratios for the best possible acceleration, gas millage, cruising rpm, etc. The fact that it can only be controlled by a computer (unless there's a virtual gear ratio selector like on Audi CVTs) is a downside. |
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You could abuse this to play music with your engine. |
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With my conventional manual
transmission, I often find myself skipping
from 1 to 3, because I don't see the need
to spend any amount of time in 2. With
the Manual CVT, the driver could push the
lever forward as they accelerate, selecting
the desired ratio, without ever decoupling
the ICE from the drive wheels. Optimize
the ratio for performance or for economy;
whatever the situation requires. [+] |
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i desgined a trans like this for my ranger rover to include the trnsfer box...may build it someday...
thanks
Nick |
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