Patent Number: 6,293,888

Title: Wide ratio coverage continuously variable transmission

Abstract: Provided with a wide ratio coverage CVT which has a driving power source, a first coupling axis, a clutch section, a second coupling axis, and a forward and rearward driving section, the CVT comprising: an input axis; an output axis located on the same axis with the input axis; a continuously variable unit section having a first continuously variable axis rotatably mounted on the output axis, a continuously variable driving part mounted on the first continuously variable axis, a continuously variable driven part mounted on a second continuously variable axis, and a continuously variable coupler for transmitting rotational power from the continuously variable driving part to the driven part; a coupling section having a first coupler integrally formed with the second continuously variable axis, a second coupler integrally formed with the output axis, and a third coupler for transmitting rotational power from the first coupler to the second coupler; and a gear section provided in the form of a gear set located between the input axis and the continuously variable unit section, the respective components of the gear section being operatively coupled to the input axis, the output axis, and the first continuously variable axis. It is possible to prevent a rapid decrease in the transmission efficiency at high and low speeds, reducing fuel consumption and exhaust gas and enhancing acceleration performance with a wider ratio coverage.

Inventors: Moon; Byung Il (Seoul 136-100, KR)


International Classification: F16H 37/06 (20060101); F16H 37/08 (20060101); F16H 037/08 ()

Expiration Date: 09/25/2018