MAN direct injection with bowl-in piston function of the rocker and valves (fine springs enable smooth operation). function of the cut up injection nozzle. function of the bowl-in piston. function of the air-cooled cylinder. description ordernumber 1167 see also: exhaust turbocharger with charging-pressure control common-Rail high-pressure pump with injector Diesel cylinder two-stage turbocharger (bi-turbo)