Patent ID: 6978769

Claim:
Method of controlling fuel injection to a combustion chamber, comprising the steps of: supplying fuel to a pump ( 2 ), which comprises a piston ( 7 ) reciprocating in a cylinder ( 6 ), pressurizing the fuel by applying a force to the piston ( 7 ) by means of an actuator ( 8 ), so that the piston ( 7 ) is moved from a first end position ( 9 ) towards a second end position ( 10 ), and injection of fuel, corresponding to a partial volume of the fuel pressurized in the cylinder ( 6 ), into the combustion chamber ( 4 ), characterized by returning the piston ( 7 ) towards the first end position ( 9 ) by means of the pressurized fuel, so that the piston ( 7 ) acts with a driving force on the actuator ( 8 ).