Delphi to Present Key Research Findings at SAE 2001 World
Congress
DETROIT, Feb. 27 The analysis of rollover data as it
relates to driver injuries in two different countries ... future electrical
architecture of vehicles, worldwide ... maximizing fuel economy and driving
comfort ... these are just a few of the topics to be covered by more than 100
Delphi Automotive Systems engineers, researchers and scientists at
the Society of Automotive Engineers (SAE) 2001 World Congress.
Delphi representatives will present 34 technical papers on many of
Delphi's key research studies, including issues such as advanced digital
audio, mobile multimedia systems, vehicle architectures, driver system safety
and comfort, valve train actuation, and the future of 42-Volt systems. In
addition, Delphi engineers will lead and participate in a number of technical
sessions and panel discussions on topics such as vehicle telematics and user
interface, globalization, and cockpit craftsmanship, during the March 5-8
tradeshow at Cobo Center in Detroit.
"Delphi has conducted an extensive amount of research on topics that are
extremely important to our customers and the public," said J.T. Battenberg
III, Delphi chairman, chief executive officer and president. "We are looking
forward to the opportunity to share our knowledge on such significant issues
with our colleagues and customers."
Highlights of nine significant Delphi papers to be presented at SAE
include:
"Peripheral SDAR Interoperability"
(Monday, March 5, at 1:30 p.m., room D0-02, Cobo Center)
Radio broadcasting has entered the digital era, where services are
delivered from the studio to the listener entirely in the digital domain.
Delphi brings this technology into the vehicle with its Satellite Digital
Audio Receiver Systems (SDARS), which provide the means to receive high-
quality digital radio services. This paper will outline a set of common
operating characteristics that may be used in peripheral SDARS, allowing them
to exist on the same audio system or be interchangeable at a receiver module
level.
"LIN Bus and its Potential for use in Distributed Multiplex Applications"
(Monday, March 5, at 2 p.m., room D2-09, Cobo Center)
As automotive architectures grow in both the sophistication of features
and complexity, they are becoming increasingly more challenging to manage.
Each new innovation typically requires additional mechanical actuators and
associated electrical controllers. This paper discusses a new architecture,
which will support the ability to add new features and enable the vehicle
assembly plants to easily assemble and test each subsystem: a distributed
multiplex arrangement that reduces the number of wires while enabling
flexibility and expandability. The LIN Bus with its low cost and rail-to-rail
capability may be the key enabling technology to make the multiplexed
architecture a reality.
"A Comprehensive Hazard Analysis Technique for Safety Critical Automotive
Systems"
(Tuesday, March 6, at 9 a.m., room D0-03, Cobo Center)
Hazard analysis plays an important role in the development of safety
critical systems. As automotive systems become more sophisticated in
functionality, design, and applied technology, the need for a more
comprehensive hazard analysis approach has arisen. This paper describes a
comprehensive hazard analysis approach for system safety programs, involving
the application of a number of hazard analysis techniques and then integrating
their results. This comprehensive approach attempts to overcome the narrower
scope of individual techniques while obtaining the benefits of all of them.
"U.S. and U.K. Field Rollover Characteristics"
(Tuesday, March 6, at 9 a.m., room M2-30, Cobo Center)
This study analyzes U.S. and U.K. accident data to identify parameters
that may influence rollover inclination and to analyze driver injury rate.
The results indicate that pre-rollover characteristics and overall injury
distribution are somewhat similar in the United States and in the United
Kingdom. For belted and unbelted drivers, serious injuries were most frequent
in the head and in the thorax, emphasizing the need to provide protection in
both these areas. The pre-rollover and injury information obtained in this
study may thus be useful for the development of global preventive measures.
Another paper relating to rollover, "Near and Far-Side Adult Front Passenger
Kinematics in a Vehicle Rollover," by Chantal Parenteau and Madana Gopal, will
be presented Tuesday, March 6, at 10 a.m., room M2-30, Cobo Center.
"Virtual Thermal Comfort Modeling"
(Tuesday, March 6, at 3 p.m., room W2-69, Cobo Center)
Simulation of passenger compartment climatic conditions is becoming
increasingly important as a complement to wind tunnel and field testing to
help achieve improved thermal comfort while reducing vehicle development time
and cost. This paper discusses a comfort model with the ability to predict
local thermal comfort level of an occupant in a highly non-uniform thermal
environment. The model predicts comfort as a function of air temperature,
surrounding surface temperatures, air velocity, humidity, direct solar flux,
as well as the level of activity and clothing type of each individual.
"Belt-Driven Starter-Generator for Future 42-Volt Systems"
(Tuesday, March 6, at 4 p.m., room M3-31, Cobo Center)
This paper explores issues related with the design and implementation of
belt-driven starter-generators for future 42-Volt systems. Belt-driven
starter-generators can offer many advantages including smooth restarts, high
efficiency and convenient packaging. Future vehicle systems require these
characteristics to enable fuel economy functions like "engine off at idle" and
"x-by-wire." A prototype system based on a belt-driven induction machine
mounted on a small, European engine is described in the paper. In addition,
test results for both cranking and generation are shown and analyzed, while
comparisons with various engine-starting, machine thermal, and electrical
model results are analyzed.
"Characterization of the Dynamic Response of a Cylinder Deactivation Valve
Train System"
(Tuesday, March 6, at 9 a.m., room W2-64, Cobo Center)
Automobile manufacturers and suppliers have made improved fuel efficiency
an important goal. Cylinder deactivation is a new technology with test
results proving the ability to maximize this key objective. Deactivating
cylinders can significantly reduce engine pumping losses under certain vehicle
operating conditions. This paper presents a theoretical and experimental
study of a cylinder deactivation valve train system for the integration into
an engine management system (EMS).
"A Study of Optimization and Verification for Cam Phaser Position Control
using Robust Engineering Techniques"
(Wednesday, March 7, at 3:30 p.m., room D0-06, Cobo Center)
One of the most significant areas of development in engine hardware and
engine management systems (EMS) is valve train actuation. This presentation
details the verification and comparison of position control algorithms for a
continuously variable cam phaser. Cam phasing is the shifting of the valve
events in the crank angle (or cam angle) domain. The paper also describes the
cam phaser hardware and software and the robust engineering strategy as well
as the methodology for achieving the paradoxical tradeoff between performance
and simplicity.
"Mobile MultiMedia Open Computing Platform"
(Wednesday, March 7, at 4:30 p.m., room D0-07, Cobo Center)
Under the brand name "Communiport(R)," Delphi has been introducing many
new products into the mobile multimedia infotainment market. Each of these
products has been uniquely designed with software tailored to the specific
application. To meet speed-to-market requirements, to develop a myriad of new
products while keeping development resources to a minimum, to maximize reuse,
and to establish an open architecture demanded by our customers, Delphi is
developing an open computing platform (OCP) for its next generation
"Communiport" products. This paper describes the OCP, from a hardware and
software perspective, how we got there, and where we are heading.
For more information about Delphi Automotive Systems, visit Delphi's
Virtual Press Room at http://www.delphiauto.com/vpr .
