Effect of Injection Pressure

High-Speed Schlieren Movies of Diesel Sprays
Parameter Low Pressure Injection High Pressure Injection
Ambient O2 [%] 21 21
Ambient Temperature [K] 1000 1000
Ambient Density [kg/m3] 28 28
ΔPinj [MPa] 71 136
Orifice Diameter [mm] 0.200 0.200
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Fuel is #2 diesel fuel. Injector tip to wall is 109 mm.

The spray penetration rate increases with increasing injection pressure.