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: Demand-driven oil pump without suction stage (V6) pump with slide-valve control (electronically controlled) two-stroke moped engine Cylinder head with piezo injector