Borgwarner Inc.

Christian Longacre

Jason Paul Moscetti

Evan Lucas

Zachary Ashton

Ryan Howell

Sean N Hastings

Srikar Yellapragada

An exhaust gas turbocharger () including a turbine section (), a compressor section (), a bearing housing () disposed between an fluidly connected to the turbine section () and the compressor section (), and an oil flow means connected to the bearing housing () for controlling and metering oil flow to the bearing assembly ().

System and method for distributing and controlling oil flow

A turbocharger () includes a wastegate valve () supported on the turbine housing (), and a pneumatic actuator () configured to actuate the wastegate valve (). The pneumatic actuator () includes a housing () separated into compartments () by a separating member (). The actuator () includes a piston () disposed in the housing () that defines at least a portion of the separating member (), a piston-biasing spring () disposed in the housing (), a first in let () that is in fluid communication with the first compartment (), the first inlet configured to be connected to a non-zero-pressure fluid source (), and a second inlet () that is in fluid communication with the second compartment (), the second inlet () configured to be connected to a non-zero-pressure fluid source ().

Corrosion resistant pneumatic actuator

An oil-lubricated, tapered-land thrust bearing assembly () for automotive turbochargers () including a thrust bearing (). The thrust bearing () includes an assembly of a base () with at least one insert (or), which is designed to control the oil film as a purposefully compliant structure based on applied force to optimize performance at low and high power operation. The ramp angle is relatively large at a low load and decreases to a smaller ramp angle at higher loads. On one side of the turbocharger (), the thrust bearing assembly () may operate with a flinger sleeve () and a thrust washer () within a complementary bearing housing cover ().

Tapered-land thrust bearing for turbochargers

A bearing system and method may include a first bearing assembly that may have an inner race. An outer race may be disposed around the inner race and may be rotatable relative to the inner race. A second bearing assembly may be disposed around the first bearing assembly. The second bearing assembly may be an air bearing. The outer race may be engageable with the inner race through the engagement mechanism that acts on the outer race so that the inner and outer races rotate together.

Growing community of inventors

Arden, NC, United States of America

Christian Longacre