METHOD OF CONTROLLING THE INJECTION OF FLUID INTO AN INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO2002079623

A8

The invention relates to a method of controlling the injection of a fluid into an internal combustion engine (1), comprising a piston (3) reciprocating in a cylinder (2) between top and bottom dead center points, and a nozzle (4) arranged in the cylinder (2). The method comprises the steps of injecting a fluid with an initial injection pressure (NOPI) into the cylinder (2), said fluid being ignited, so that the pressure in the cylinder (2) increases, thereby causing the piston (3) to be displaced towards the bottom dead center point in the cylinder (2), and that a least one injection pause (UI) is effected during the injection of the fluid. The injection of the fluid, immediately after the injection pause (UI), is effected so that the injection pressure (NOPI+1)has increased in an interval of more than 0 bar and up to 2000 bar relative to an injection pressure (NCPI) prevailing immediately prior to the injection pause (UI), and that the injection pause (UI) is effected for a duration corresponding to an angle of rotation ( alpha ) of an engine crankshaft (10) in the interval 1° -30°, preferably in the interval 1° -20°.

EISMARK JAN (SE)
ANDERSSON ARNE (SE)
HOEGLUND ANDERS (SE)
SVENSSON BO (SE)

PCT/SE2002/000615

May 13, 2004

March 27, 2002

Click for automatic bibliography generation  

VOLVO TEKNISK UTVECKLING AB (SE)
EISMARK JAN (SE)
ANDERSSON ARNE (SE)
HOEGLUND ANDERS (SE)
SVENSSON BO (SE)

F02B23/06; F02B75/02; F02D41/04; F02D41/38; F02D41/40; F02M45/02; F02M45/04; F02M45/08; F02M47/02; F02M57/02; F02M59/36; F02M61/18; F02B3/06; (IPC1-7): F02B3/12; F02M45/02

View/Download PDF      PDF Help

Previous Patent: METHOD OF OPERATING A SELF-IGNITED INTERNAL COMBUSTION ENGINE

Next Patent: MOTOR COMPRISING A SEPARATE PISTON HEAD