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Delphi Keeps Harley-Davidson at the Peak in Setting Standards

27 July 2000

Delphi Introduces Two Industry Firsts for Popular Harley-Davidson Softail Platform

             
    TROY, Mich. - Delphi Automotive Systems has been selected to supply the 
engine management system (EMS) electronics for the 2001 Softail platform for 
Harley-Davidson Motorcycles.  The Delphi EMS system is the first "ion-sense" 
and hybrid engine controller based-technologies ever used on a motorcycle.  
The 2001 Harley-Davidson engine management system utilizes a Delphi engine 
control module, manifold absolute pressure (MAP) sensor and dual ignition coil.

    "Our systems approach integrates hardware with electronics controllers,
engine management software and algorithms to deliver a highly efficient and
sophisticated engine management system," said Chuck Meier, general director of
North America Regional Marketing & Sales for Delphi Delco Electronics Systems.
"This engine management system meets the performance, emissions and fuel
economy demands required by our customer and end-users."

    The Delphi EMS features "ion-sense" technology to help control engine
knock by measuring knock intensity in the cylinder combustion chamber.  With
"ion-sensing" technology, knock detection is achieved using the spark plug gap
itself as the knock detector.  It is more cost-effective as well as
aesthetically appealing since it does not require added external hardware on
the engine.

    The hybrid engine controller technology is another first for the
motorcycle industry.  The hybrid controller uses a ceramic substrate with
surface mounted electronic components in a sealed package.  Hybrid
microelectronics offers superior packaging density and environmental
robustness, to withstand higher temperatures and vibration than traditional
circuit board technology.  In addition, the Delphi controller is
reprogrammable through a serial interface communication port allowing it to be
programmed using an off-board service tool.

    The system employs speed-density fuel control, which uses synchronous
manifold pressure sensing to monitor the engine load.  This is an improved
method of measuring engine load that is more tolerant of engine-to-engine
variations.

    With the Delphi EMS, the key features and functions of the 2001 Softail
platform include:

    *  Hybrid ECM technology for compact and rugged applications.
    *  Cylinder-independent sequential port fuel injection.
    *  Cylinder-independent spark timing control.
    *  Synchronous manifold pressure sensing of engine load.
    *  Predictive load estimation for accurate transient control.
    *  Control of idle air for turnkey starting and idle speed control.
    *  Cylinder identification without the use of a camshaft sensor.
    *  Barometric pressure compensation for operation at any altitude.
    *  Knock control using "ion-sense" technology.
    *  Engine speed-governing control.
    *  Engine management systems diagnostics.
    *  Communication interface to instrument cluster, security module and
       service tools.

    "Harley-Davidson customers demand reliable and durable and engine
performance," said Meier.  "Our new electronics technologies assure these
requirements are met.  We are proud to be on the Harley-Davidson team as a
supplier."

    Multi-national Delphi Automotive Systems, with headquarters in Troy,
Mich., USA, Paris, Tokyo and Sao Paulo, Brazil, is a world leader in mobile
electronics and transportation components and systems technology.  Delphi's
three business sectors -- Dynamics & Propulsion; Safety, Thermal & Electrical
Architecture; and Electronics & Mobile Communication -- provide comprehensive
product solutions to complex customer needs.  Delphi has approximately 216,000
employees and operates 179 wholly owned manufacturing sites, 41 joint
ventures, 53 customer centers and sales offices and 31 technical centers in 39
countries.