Fuel System - N14, N18: Notes

The N14/N18 4-cylinder gasoline engine works with direct fuel injection. Direct fuel injection increases performance. The fuel delivery pressure is a maximum of 120 bar (idle speed: 50 bar, full load: 120 bar).

The use of direct fuel injection creates a homogeneous mixture formation in the entire combustion chamber. Homogeneous mixture formation means that the fuel-air ratio is regulated stoichiometrically in the same way as for intake pipe fuel injection (Lambda = 1). "Stoichiometrically" refers to a fuel-air ratio of 14.7 kilograms of air to 1 kilogram of fuel. The homogeneous mixture formation means that conventional exhaust gas treatment can be deployed.