The Plunger and Barrel assembly is found in many fuel injection system,Where a plunger reciprocates within a stationary barrel.The plunger operates by moving upwards and downwards and its function relates to helping build up the pressure of the fuel before it gets atomized into the combustion chamber. FoR Woodward fuel injection pump and MAN B&W Generator. #tripnijoseph #sharing #caring #knowledge #generator #spare #injectionpump #onboard | Trip ni joseph