Fuel, Intake and Electronic Systems

The individual cylinder banks receive precisely balanced air charge delivery from two symmetrical intake plenums which have equal length ram intake runners, The fuel injectors are mounted in the inlet flanges.



Elastic sealing plates are used to attach the plenum assemblies to the cylinder heads. This feature acts as a sound barrier and limits vibration to the electronic throttle valve assemblies.



Each intake plenum chamber is equipped with a fast acting, electronic throttle valve assembly.
Hot wire airflow sensors are used in conjunction with Digital Motor Electronics for measurement of physical air mass. Precise and rapid load sensing allows improved adaptation to changing engine operating conditions.

The crankcase ventilation system vents crankcase vapors direct to the intake plenum to prevent oil mist contamination.

After engine shutdown, the air flow sensing wire is superheated to vaporize any contaminants which may have adhered during the previous engine operating period.



The DME 1.2 Engine Management System represents a further development in Motronic engine control. DME 1.2 is actually two individual Motronic six cylinder engines which share a common crankshaft. Precise balance and synchronization is achieved with the employment of a third management system - EML. In addition to throttle synchronization, EML provides failsafe throttle operating programs, maximum RPM and vehicle speed limits and cruise control operation.

For complete DME information, see TRI 12 01 87 (2083).
For complete EML information, see TRI 12 01 87 (1171).



Each cylinder bank has it's own secondary ignition distributor and high tension cables. All secondary wiring is routed and protected in a special plastic conduit developed for this purpose.