POWER TRANSMISSION DEVICE FOR VEHICLE

Japanese Patent JP2017155778

A

PROBLEM TO BE SOLVED: To suppress torsional resonance of a power transmission passage at a downstream side of an output shaft while minimizing increase of a weight, in a power transmission device for a vehicle including a crank-type transmission unit.SOLUTION: As auxiliary power transmission means S2 disposed in parallel with a plurality of transmission units 14 and connecting an input shaft 12 and an output shaft 13, includes a planetary gear mechanism 47 and a clutch 48 for blocking power transmission of the planetary gear mechanism, driving force is transmitted from an output shaft side to an input shaft side through the auxiliary power transmission means, and engine brake and regeneration brake can be acted in decelerating the vehicle. As a damping mass 64 is disposed on an element 51 constantly connected to the output shaft and having a maximum rotational radius among three elements of the planetary gear mechanism, resonance frequency of the torsional resonance of the power transmission passage at the downstream side of the output shaft is shifted to the outside of a normal rotational frequency region only by adding minimum necessary damping mass, and the damping effect can be constantly achieved during running of the vehicle.SELECTED DRAWING: Figure 1

SASAKI AKIHIKO
YAMAMOTO KAZUHIKO
ICHIKAWA KAZUKI

JP2016037721A

September 07, 2017

February 29, 2016

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HONDA MOTOR CO LTD

F16H29/04; F16H3/54; F16H37/02

JP2014035036A	2014-02-24
JP2015209907A	2015-11-24

WO2012176494A1

2012-12-27

Ochiai Patent Office

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