Gearbox for a hybrid vehicle, drivetrain having a gearbox of said type, and method for operating the same

US10486518B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Johannes Kaltenbach · Friedrichshafen, DE
• Christian Mittelberger · Ravensburg, DE
• Stefan Renner · Leonberg, DE
• Stefan Blattner · Weingarten, DE

Key dates

• Filing date: Nov 2, 2016
• Grant date: Nov 26, 2019
• Expiry date: Dec 2, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/62
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A hybrid vehicle transmission (1) having internal combustion engine (8) and electric machine (5). The transmission (1) comprises main transmission (HG) with two parallel partial transmissions; output shaft (4); first (R1), second (R2), third (R3), fourth (R4) and output constant (R5) gear planes each comprising a fixed gear on countershaft (VW) and respective meshing loose gear; first (A), second (B), third (C), fourth (D), fifth (E), sixth (F), seventh (G) and eighth (H) shift elements. Whenever eighth shift element (H) is engaged, the loose gear of fifth gear plane (R5) is engaged with the output shaft (4) of the main transmission (HG), whenever the seventh shift element (G) is engaged, loose gear of fourth gear plane (R4) is engaged with the output shaft (4), and whenever the sixth shift element (F) is engaged, loose gear of fourth gear plane (R4) is engaged with the first transmission input shaft (2).