On-vehicle hybrid drive apparatus having a rotational damper

摘要

In an on-vehicle hybrid drive apparatus including a power-transmission shaft (22) transmitting rotation generated from an engine (3) into a transmission (4), and a motor-and-generator (7) fitted on the power-transmission shaft (6) and installed between the engine (3) and the transmission (4), a first friction element (8) is installed on the engine side for coupling the engine (3) with or uncoupling it from the motor-and-generator (7). A second friction element (9) is installed on the transmission side for coupling the motor-and-generator (7) with or uncoupling it from a transmission output shaft (12). A rotating damper (24) is installed downstream of the motor-and-generator (7) and disposed in a rotating-motion transmission system ranging from the motor-and-generator (7) to the transmission output shaft (12). The rotating damper (24) is preferably interleaved in a coaxially abutted shaft portion of a central motor-and-generator shaft (22) and a transmission input shaft (5).