A.restricted turbocharger air intake B.oil leak into the turbocharger C.dribbling injector D.low fuel viscosity
The exhaust valve opens before bottom dead center in a four stroke engine to() Ⅰ.allow for blow down Ⅱ.Reduce pumping losses
A.Ⅰ only B.Ⅱ only C.both Ⅰ and Ⅱ D.neither Ⅰ nor Ⅱ
A.Constant volume B.Constant pressure C.Pulse pressure D.Radial flow