Unisia Jecs Corporation

Nissan Motor Company Limited

Shouichi Tsuchiya

Takashi Murasugi

Atsuhiro Mori

Masanori Koda

Tatsuya Morishita

Satoshi Kohno

Masamichi Matsuoka

A flywheel for an internal combustion engine includes a flexible plate connected to a crankshaft of the engine. A mass member is connected to the flexible plate. A clearance is formed at an axially outer portion with respect to a connecting portion of the flexible plate to the crankshaft. A spring member is disposed in the clearance such that both ends of the spring member being in contact with clearance defining surfaces of the flexible plate and the mass member, respectively. This flywheel enables the prevision of the spring member without increasing a thickness of an installing portion to the crankshaft.

Flywheel for internal combustion engine

A vibration damping equipment for a torsional damper comprises a hub plate, side plates, a torsion spring, a friction block, and low rigidity members. Each low rigidity member is interposed between the hub plate and each friction block to be adjacent to each other through a partition of the hub plate. The low rigidity members are connected to each other on at least one axial side of the partition.

Vibration damping equipment for torsional damper, including a low

Friction blocks are held between a driver plate and a friction ring fixedly held on a side plate using a plate spring, and are received in circumferentially spaced windows of an annular disc. The annular disc is affixed to a torque converter cover and disposed between the driver and side plates both of which are secured to an engine crankshaft. The friction blocks have, within the windows, a play in the circumferential direction of the annular disc. The annular disc is resiliently coupled with the driver and side plates by coil springs operatively disposed in corresponding windows of the driver plate, side plate, and the annular disc. Rotation of the driver and side plates relative to the annular disc far enough to consume the circumferential play of the friction blocks in the corresponding windows causes the annular disc to entrain all of the friction blocks in its further movement. Relative mobility of the friction blocks to each other in the circumferential direction of the annular disc is restricted by two floating rings, the first of which is disposed between the annular disc and the friction ring and the second of which is disposed between the annular disc and the driver plate.

Flywheel with friction generating device

A torsional damper comprises damper elements which are resiliently coupled by a spring arrangement and a friction generating device. One of the damper elements has a radially extending wall. The friction generating device includes a plurality of friction blocks received by the other damper element with play in the circumferential direction, and a spring arranged to bias the plurality of friction blocks against the radially extending wall. In order to absorb the shock of engagement of each of the plurality of friction blocks with the other damper element, a cushion is provided.

Torsional damper having a resiliently coupled damper element and a

A torque transmission device for an automatic power transmission employs a viscous coupling interposed between a crankshaft and a converter cover of a torque converter. The viscous coupling is effective for damping torsional vibration input from the camshaft by viscosity thereof.

Growing community of inventors

Atsugi, Japan

Shouichi Tsuchiya