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Design and Analysis of a hydraulic All-Wheel-Drive-lock system.

Kalén, Erik LU (2022) MMEM01 20222
Machine Elements
Abstract
The feasibility of implementing a hydraulic load-holding solution in a BorgWarner all-wheel-drive (AWD) coupling was investigated in this work. There exist many sophisticated valve designs intended for load holding applications, but this work focused on simple solenoid valves to reduce cost and complexity. To evaluate the feasibility of the intended load-holding solution, a leakage and pressure drop study of an AWD-coupling was conducted. The leak rate across valve components in a static, pressurized system is normally determined with physical measurements of leaked volume or mass, but in this work, leak rate was estimated with pressure measurements and liquid bulk modulus. To investigate the reasonableness of the bulk modulus method, two... (More)
The feasibility of implementing a hydraulic load-holding solution in a BorgWarner all-wheel-drive (AWD) coupling was investigated in this work. There exist many sophisticated valve designs intended for load holding applications, but this work focused on simple solenoid valves to reduce cost and complexity. To evaluate the feasibility of the intended load-holding solution, a leakage and pressure drop study of an AWD-coupling was conducted. The leak rate across valve components in a static, pressurized system is normally determined with physical measurements of leaked volume or mass, but in this work, leak rate was estimated with pressure measurements and liquid bulk modulus. To investigate the reasonableness of the bulk modulus method, two independent reality checks were made by the author.
2Two system level concepts and four valve concepts were generated in this work. Each valve concept featured a valve design that had been selected using the general orifice equation. To model the valve concepts and analyze the operation in the current AWD-coupling, the author utilized a 1-D computer simulation approach in the Siemens AMESim environment, instead of prototyping real concepts. The simulations were oriented towards the broad, conceptual perspective to cover many aspects of the valve operation and hydraulic load holding in the AWD-coupling application. According to the simulation results, some potential and some problems were found with the intended load-holding solution. (Less)
Please use this url to cite or link to this publication:
author
Kalén, Erik LU
supervisor
organization
course
MMEM01 20222
year
type
H2 - Master's Degree (Two Years)
subject
language
English
id
9101531
date added to LUP
2022-10-11 07:48:03
date last changed
2022-10-11 07:48:03
@misc{9101531,
  abstract     = {{The feasibility of implementing a hydraulic load-holding solution in a BorgWarner all-wheel-drive (AWD) coupling was investigated in this work. There exist many sophisticated valve designs intended for load holding applications, but this work focused on simple solenoid valves to reduce cost and complexity. To evaluate the feasibility of the intended load-holding solution, a leakage and pressure drop study of an AWD-coupling was conducted. The leak rate across valve components in a static, pressurized system is normally determined with physical measurements of leaked volume or mass, but in this work, leak rate was estimated with pressure measurements and liquid bulk modulus. To investigate the reasonableness of the bulk modulus method, two independent reality checks were made by the author. 
2Two system level concepts and four valve concepts were generated in this work. Each valve concept featured a valve design that had been selected using the general orifice equation. To model the valve concepts and analyze the operation in the current AWD-coupling, the author utilized a 1-D computer simulation approach in the Siemens AMESim environment, instead of prototyping real concepts. The simulations were oriented towards the broad, conceptual perspective to cover many aspects of the valve operation and hydraulic load holding in the AWD-coupling application. According to the simulation results, some potential and some problems were found with the intended load-holding solution.}},
  author       = {{Kalén, Erik}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Design and Analysis of a hydraulic All-Wheel-Drive-lock system.}},
  year         = {{2022}},
}