Sagar Adari

A thrust washer is provided. The thrust washer includes an annular base including a radially extending thrust surface, a further radially extending surface on an opposite side of the annular base from the radially extending thrust surface, an outer circumferential surface extending axially from the radially extending thrust surface to the further radially extending surface and an inner circumferential surface extending axially from the radially extending thrust surface to the further radially… Show more

A thrust washer is provided. The thrust washer includes an annular base including a radially extending thrust surface, a further radially extending surface on an opposite side of the annular base from the radially extending thrust surface, an outer circumferential surface extending axially from the radially extending thrust surface to the further radially extending surface and an inner circumferential surface extending axially from the radially extending thrust surface to the further radially extending surface. The thrust washer also includes radially extending connectors extending radially outward from the annular base. A motor vehicle drivetrain assembly, a torque converter and a method of connecting a thrust washer to a component are also provided. Show less

A torque converter is provided. The torque converter includes a front cover, an impeller shell and a turbine axially movable to frictionally engage the impeller shell such that the turbine forms a piston of a lockup clutch. A first pressure chamber is defined axially between the turbine and the impeller shell. The torque converter further includes a reaction plate positioned axially between the front cover and the turbine. A second pressure chamber is defined axially between the reaction plate… Show more

A torque converter is provided. The torque converter includes a front cover, an impeller shell and a turbine axially movable to frictionally engage the impeller shell such that the turbine forms a piston of a lockup clutch. A first pressure chamber is defined axially between the turbine and the impeller shell. The torque converter further includes a reaction plate positioned axially between the front cover and the turbine. A second pressure chamber is defined axially between the reaction plate and the turbine and a third pressure chamber is defined axially between the reaction plate and the front cover. A method of forming a torque converter is also provided. Show less

A torque converter is provided. The torque converter includes a damper assembly and a turbine assembly connected to the damper assembly. The turbine assembly includes an axially movable turbine piston, a spacer plate fixed to the turbine piston and a bias spring. The spacer plate retains the bias spring on the turbine piston with a preload force. A method of forming a torque converter is also provided. The method includes providing a bias spring contacting a front cover side surface of a… Show more

A torque converter is provided. The torque converter includes a damper assembly and a turbine assembly connected to the damper assembly. The turbine assembly includes an axially movable turbine piston, a spacer plate fixed to the turbine piston and a bias spring. The spacer plate retains the bias spring on the turbine piston with a preload force. A method of forming a torque converter is also provided. The method includes providing a bias spring contacting a front cover side surface of a turbine piston; and fixing a spacer plate to the turbine piston such that the spacer plate holds the bias spring against the front cover side surface of the turbine piston. Show less

A method of forming a damper assembly is provided. The method includes providing springs into an interior space of a spring retainer such that the springs circumferentially contact carrier pins; compressing the springs via the carrier pins into a preloaded orientation; providing tabs in the interior space of the spring retainer such that each of the tabs is between two of the carrier pins; and removing the carrier pins such that the tabs hold the springs in the preloaded orientation. A damper… Show more

A method of forming a damper assembly is provided. The method includes providing springs into an interior space of a spring retainer such that the springs circumferentially contact carrier pins; compressing the springs via the carrier pins into a preloaded orientation; providing tabs in the interior space of the spring retainer such that each of the tabs is between two of the carrier pins; and removing the carrier pins such that the tabs hold the springs in the preloaded orientation. A damper assembly and a torque converter are also provided. Show less

Wound Roll quality measurement plays a crucial role in predicting defects inside a wound roll. The quality of a wound roll is measured in terms of its hardness. A Rho Meter is one such instrument which measures the hardness of a wound roll in arbitrarily chosen unit
called Rho. The Rho Meter works on the principle of impact. The peak force exerted by the striker of the Rho Meter onto the surface of the roll is measured by the accelerometer on top of the striker and is converted into… Show more

Wound Roll quality measurement plays a crucial role in predicting defects inside a wound roll. The quality of a wound roll is measured in terms of its hardness. A Rho Meter is one such instrument which measures the hardness of a wound roll in arbitrarily chosen unit
called Rho. The Rho Meter works on the principle of impact. The peak force exerted by the striker of the Rho Meter onto the surface of the roll is measured by the accelerometer on top of the striker and is converted into arbitrary units called Rhos. The dependence of the Rho hardness of a wound roll on its radial modulus was studied. The moving components of the Rho Meter were modeled. The wound roll was modeled using a pre-existing code (Roll Compressor) that can predict the deformation response of a wound roll due to an external contact. These sub models were combined to produce a 1-D dynamic
model that could predict the maximum deceleration of the Rho Meter striker which could then be converted to Rho units.
The model made fairly good predictions of the hardness of the wound rolls. These predictions were validated with experimental results obtained by center winding rolls at constant but varied tensions. Also the case of variation in hardness values with variation of pile heights of wound rolls was studied. The deviation of the hardness values predicted by the 1-D code from the experimental values can be corrected by including the factors such as the dynamically varying pressures, radial modulus, shape of the Rho Meter striker and
interlayer slippage at the locality of impact. Also by refining the mesh of the Roll Compressor, better results can be obtained but requires longer computational times.
Show less