Multi-speed transmission

US7670246B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Michael Kamm · Bodnegg, DE
• Gabor Diosi · Friedrichshafen, DE
• Josef Haupt · Tettnang, DE
• Gerhard Gumpoltsberger · Friedrichshafen, DE
• Peter Ziemer · Tettnang, DE
• Martin Brehmer · Tettnang, DE

Key dates

• Filing date: Jul 5, 2007
• Grant date: Mar 2, 2010
• Expiry date: Apr 28, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2200/2043
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The 8-gear transmission comprising an input shaft (AN), an output shaft (AB), four planetary gearsets (RS1, RS2, RS3, RS4), eight rotary shafts (1, 2, 3, 4, 5, 6, 7, 8) and five shifting elements (A, B C, E, E). The first shifting element (A) is arranged within the power flow between the third shaft (3) and a housing (GG) of the transmission, the second shifting element(B) is arranged within the power flow between the fourth shaft (4) and the housing (GG), the third shifting element (C) is arranged within the power flow between the first and the fifth shafts (1, 5), the fourth shifting element (D) is arranged within the power flow between the fifth and the eighth shafts (5, 8), and the fifth shifting element (E) is arranged within the power flow between the fifth and the seventh shafts (5, 7).