each of the flumes 52 are aligned with a respective fuel spray jet 60 the passageways 62 are positioned to be in substantial alignment with a respective one of the fuel spray jets 60 when the piston is at a desired predetermined position e g within about ten degrees tdc so that at least a portion of the fuel in the spray jet is transported through the passageway 62 and subsequently conducted to a predetermined position within the combustion chamber 58 more specifically the passageways 62 are preferably tapered front to back as best shown in fig5 i e the entrance ports 64 of the passageways 62 have a larger cross sectional area than that of the rear exit ports 66 it is desirable that the collective total cross sectional areal of the rear and side exit ports 66 and 68 not be less than the cross sectional area of an associated entrance port so that fuel momentum is maintained during flow through the flume 52 desirably the rear and side exit ports 66 and 68 have a small chamfer at the respective port opening to increase the dispersion angle the fuel exiting the ports in a second alternate embodiment illustrated in fig6 a combustion chamber 70 has the flume 52 described in the previous embodiment mounted on the cylinder head 72 this arrangement enables fuel to be injected into the combustion chamber over a wider range of piston positions and injection timing because the position of the piston 74 is not as critical as it is in the earlier described embodiments it should be understood that the flumes may have different.