TY - JOUR
TI - A control method of fuel distribution by combustion chamber zones and its dependence on injection conditions
AU - Shatrov Mikhail G
AU - Malchuk Valery I
AU - Dunin Andrey Y
AU - Shishlov Ivan G
AU - Sinyavski Vladimir V
JN - Thermal Science
PY - 2018
VL - 22
IS - 15
SP - 1425
EP - 1434
PT - Article
AB - A method of fuel injection rate shaping of the Diesel engine common rail fuel  system with common rail injectors and solenoid control is proposed. The  method envisages the impact on control current of impulses applied to the  control solenoid valve of the common rail injectors for variation of the  injection rate shape. At that, the fuel is supplied via two groups of  injection holes. The entering edges of the first group with the coefficient  of flow, μсB, were located in the sack volume and the entering edges of the  second group (coefficient of flow, μсH) - on the locking taper surface of  the nozzle body. The coefficients of flow, μсB, and μсH differ considerably  and depend on the valve needle position. This enables to adjust the  injection quantity by injection holes taking into account operating  conditions of the Diesel engine and hence - by the combustion chamber zones.  Using the constant fuel flow set-up, characteristic of the effective  cross-section of the common rail fuel system injector holes was  investigated. The diameter of injector holes was 0.12 … 0.135 mm. The  excessive pressure at the entering edges varied from 30 to 150 MPa and more  and the excessive pressure in the volume behind the output edge - from 0 to  16 MPa.