Delphi Launches First Compact, Fully-Integrated Electronic Unit Injector

                'Places Delphi two years ahead of competition'

    FRANKFURT, Germany, Sept. 10 A revolutionary new
Electronic Unit Injector (EUI) has been developed by Delphi Automotive Systems
, the world's second largest supplier of diesel fuel injection
technologies, for use in large diesel engines.  The new, compact injector can
directly replace previous generation injectors, providing much greater
flexibility in cylinder head packaging.  It also improves peak injection
pressure and injector responsiveness, and is half the weight of previous
designs, saving 6.6kg on a six-cylinder engine.
   
    "We believe the E1 places us two years ahead of the competition," said
Guy C. Hachey, president, Delphi Energy & Chassis Systems.  "It is a highly
attractive technology for diesel engines from 9.0 litres up to 16 litres."

    EUI systems use a separate pump for each injector, traditionally
integrating the pump with the injector body and mounting the spill valve and
control solenoid on the side of the body.  This provides a highly effective
unit with excellent responsiveness, but the offset forging required makes it
both bulky and complicated to manufacture.

    Delphi has overcome these issues by developing new technologies that allow
the spill valve and control solenoid to be integrated within the injector
body, concentric with the pump and nozzle mechanisms.  This provides a very
compact unit which, compared with the previous generation EUI, is no larger
than the conventional injector body alone and uses 40 percent fewer
components.

    The shorter, more direct fuel path allows more accurate fuel metering,
improved injector responsiveness and a peak injection pressure of 2000 bar, up
15 percent compared with the previous generation unit with no increase in
power consumption.  Elimination of the offset forging considerably increases
opportunities for improved cylinder head and valvetrain layouts and reduces
the weight of each unit from 2.2kg to 1.1kg -- resulting in a considerable
saving on six and eight cylinder engines.  The unit is designed to be
maintenance free for 1 million km, providing further savings for vehicle
operators.

    The E1 was designed at Delphi's Park Royal Technical Centre in London,
where Euro IV and Euro V versions are currently under development.  To achieve
the fine tolerances necessary for the E1 (many smaller than one micron),
Delphi has installed a new manufacturing line at its specialist heavy-duty
plant in Stonehouse (UK), where production of the E1 has already started for a
European heavy-duty application.  An electronic unit pump with a separate
injector is available for cam-in-block applications.