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Re: Motronic or KE-Jet? A new (but long) twist
In message <email@example.com> BRIT4VWS@aol.com writes:
>> Curiously, the system used in the Audi 5000 turbos and UrQ is
>> "K-Jetronic" even though it had all the characterics of a "Motronic"
>> system (fuel, spark and boost all managed by one digital ECU). This
>> is probably because these Audi systems used Hitachi ECUs instead of Bosch.
It's a good summary, but it's US-centric. Although we had the same
terminology in the UK, almost no engines had OXS-sensor controls until
1990. Our original ur-quattro (no, it's not tautology) had no fuel
control in the ECU - there are no electrically controlled components
in the fuel system at all. The later MB version (like mine) has
a fuel frequency valve but still no OXS sensor - it "flies blind" using
tables and calculations based on rpm, air temperature and boost. The
last ur-quattros use Motronic 2.4.1 EFI with an OXS sensor.
UK Audi quattro Owners Club
Phone: 0385 302803 Fax: 0870 0883933