Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 122
DME 7.8 DME 7.80 · large valve small valve lift
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DME 7.8 DME 7.80
large valve small valve lift
Inlet opens 9° after TDC 39° after TDC
Inlet closes 61° after BDC 19° after BDC
Exhaust opens 50° before BDC
Exhaust closes 4° before TDC
Engine cooling
Type Liquid cooling,
two radiators
(Tiptronic additional radiator)
two electric fans, two-stage control
Engine lubrication
Type integrated dry sump lubrication
Oil cooling via oil-water heat exchanger
Oil pressure n=5,000 rpm Approx. 6.5 bar at 90 °C
Oil consumption Up to 0.5 l/1,000 km
Emission control
EURO II Oxygen sensing with 2 sensors before the cata-
lytic converter, 3-way catalytic converter system
with one TWC each on the left and the right (RoW)
EURO III Additional secondary air system and sensing after
the TWC (4 sensors) European OBD
USA LEV OBD II + ORVR Oxygen sensing and sensing after the TWC (4
sensors), 3-way catalytic converter system with
one cascade catalytic converter each on the left
and right (with two metal carriers), secondary-air
system, OBD II and ORVR
Fuel system
Fuel injection ME 7.8 (digital engine electronics)
Triggering of injection sequential
Fuel supply 1 electric pump, non-return
0-5.1 page 2 Engine specifications
msp_dmFL Printed in Germany – 8, 2002
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