Table of contents: Gasoline consumption ↓ Injection ↓
Gasoline consumption
High-tech Audi engines are also helped by electronics to "curb the thirst" of the engine a little. At cruising speed, the Audi can get by with 8.5 liters per 100 km. On the other hand, it will not be a problem to increase fuel consumption to more than 12 liters per 100 km.
Injection
The six-cylinder engine with a working volume of 2.8 liters has an MPI injection system. The abbreviation MPI hides the abbreviation of the English name Multi Point Injection. (The identification feature of the MPI injection system is the fresh air flow meter in the air intake hose at the rear right in the engine compartment.)
The almost identical MPFI fuel injection system of the 2.6L engine is called by this abbreviation only for the sake of distinction, which stands for Multi Point Fuel Injection. (Identification feature: absence of fresh air flow meter.)
The distinguishing feature of these two systems is the method of measuring the amount (or mass) of air sucked in:
- MPI does this by using a hot wire air flow meter.
- In MPFI, an intake manifold air pressure sensor is used for this purpose (built into the control unit and connected by a hose to the intake manifold), and also the intake air temperature sensor (in the intake manifold).