Abstract
A conventional multi-point Diesel rotary fuel injection pump system and an own-designed multi-point Gasoline electronic injection system are applied to the intake of a standard 4 stroke,
1900 cm3, 4 cylinder pre-chamber automotive Diesel engine to obtain an hybrid combustion.
Hybrid combustion is analyzed varying the amount of total fuel introduced, the diesel and gasoline mixture, the homogeneous and heterogeneous charge relation, the cooling system temperature and the engine speed to obtain the main and the intake start injection time, the engine torque, the exhaust temperature, and the pre-chamber and chamber pressure signal to calculate the heat release.
Characterization of hybrid combustion will determine which are the conditions under fuel consumption, NOx generation and combustion noise that can be reduced respect to the original standard automotive pre-chamber diesel engine combustion process.