Patent ID: 9194349
Filing Date: 2015-11-24
Classification: F02M

Abstract:
1. A fuel injection arrangement for piston engine comprising at least one fuel injector means of which fuel may be injected into a combustion chamber of the engine, the fuel injector comprising at least one fuel injection valve arranged to meter the fuel into the combustion chamber, the fuel injection arrangement further comprising an intensifier piston arrangement comprising a piston space and a piston member therein having a first area which is arranged to be influenced by a work fluid and which first area at least partially borders a first work space of the intensifier piston arrangement; and the piston member having a second area which at least partially borders a second work space of the intensifier piston arrangement, and the intensifier piston arrangement comprises a counter member and the piston member is provided with a longitudinally extending cavity providing a space into which the counter member is arranged to extend at least partly, and the second area is at least partly defined by the piston member and the counter member, wherein the second work space is defined by the cavity in the piston member and the counter member and the second work space is arranged inside the piston member; and the second work space being arranged in flow connection with the at least one injection valve of the injector so that the valve needle is arranged to be lifted by the pressure or the fuel in the second work space.