View Full Version : How does that new transmission work?

12-01-2002, 08:49 PM
The new tranny from Honda. I think its called CVT or some shit. Its the 1 speed transmission. How does it work?

12-01-2002, 08:59 PM

12-01-2002, 09:13 PM
can someone answer i really wanna know this shit

12-01-2002, 09:16 PM
CVT came out in the 1996 civic HX, nothing new. Subaro used one before that in the Justy.

what it does is that it creates infinite ratios in a range, so it can use any ratio it needs.... i just dont want to explain it..... ok ok, i don't know how to.

12-01-2002, 09:29 PM
Cars need transmissions because of the physics of the gasoline engine. First, any engine has a redline -- a maximum rpm value above which the engine cannot go without exploding. Second, if you have read How Horsepower Works, then you know that engines have narrow rpm ranges where horsepower and torque are at their maximum. For example, an engine might produce its maximum horsepower at 5,500 rpm. The transmission allows the gear ratio between the engine and the drive wheels to change as the car speeds up and slows down. You shift gears so the engine can stay below the redline and near the rpm band of its best performance.
Ideally, the transmission would be so flexible in its ratios that the engine could always run at its single, best-performance rpm value. That is the idea behind the continuously variable transmission (CVT). A CVT has a nearly infinite range of gear ratios. In the past, CVTs could not compete with four-speed and five-speed transmissions in terms of cost, size and reliability, so you didn't see them in production automobiles. These days, improvements in design have made CVTs more common. The Toyota Prius is a hybrid car that uses a CVT.

CVT uses a belt that continuously changes length creating an almost infinite number of different gear ratios rather than only 4, 5, or 6 with conventional transmissions.

12-01-2002, 09:55 PM
CVT technology has advanced, it used to be that CVTs could only handle small motors with small tourque. Audi has done some nice work and the CVT is now available in some A-series cars. nissan in japan has CVT in a skyline with 8 speed presets.