抄録
According to its powertrain strategy, BMW introduces the new 6- and 4-cylinder inline petrol engine generation, featuring a stratified DI combustion system with High Precision Injection. The spray-guided combustion system eliminates the disadvantages of the wall- and air-guided 1st generation DI combustion systems, providing a stratified mixture at the spark plug and significantly reduced wall wetting. The piezo injector permits an extremely fast actuation, providing high flexibility for the calibration strategy to supply a very efficient combustion with low unburnt hydrocarbon and carbon monoxide emissions. The paper presents the realised potentials and technical features of this new engine generation.
