Continuously variable transmission and a working machine including a continuously variable transmission

US8747269B2 · kind B2 · utility

Assignee

• Volvo Construction Equipment AB · SE

Inventors

• Per Mattsson · Walter-Bruch-Straße, SE
• Mats Akerblom · Eskilstuna, SE

Key dates

• Filing date: Jul 16, 2010
• Grant date: Jun 10, 2014
• Expiry date: Jul 16, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2200/2023
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A continuously variable transmission includes a variator unit having a variator input shaft and a variator output shaft, and first, second and third planetary gear sets. The first and second planetary gear sets are arranged together and each includes a first member operatively connected to a common transmission input shaft and a second member operatively connected to a common output shaft, each of the first and second planetary gear sets further including a third member. The third planetary gear set has a first, second and third member. The variator input shaft is operatively connected to the third member of the second planetary gear set and the variator output shaft is operatively connected to the third member of the first planetary gear set. The first member of the third planetary gear set is operatively connected to the variator output shaft. The second member of the third planetary gear set is selectively connectable to the third member of the second planetary gear set and selectively connectable to the transmission housing. The third member of the third planetary gear set is operatively connected to a transmission output shaft. The common output shaft is selectively connectabl…