| 摘要 |
PROBLEM TO BE SOLVED: To effectively reduce pulsation in a low pressure side, by most suitably setting a mounting angle difference (phase difference of plunger lift) of each single cylinder pump unit, in the case of using two of more single cylinder pumps, provided with a suction chamber in an opposite side to a forced feed chamber, as the single cylinder pump unit. SOLUTION: Setting a respective mounting angle difference (phase difference of plunger lift) of a single cylinder pump unit 1 to a prescribed value is aimed, in an opposite side to a forced feed chamber of a plunger, the single cylinder pump unit 1 provided with a suction chamber communication with a fuel supply passage 23 is used by a quantity of (m) also when (n) is assumed for a number of mountains of a cam per one turn of a drive shaft, a plunger lift phase differenceΔθis set so as to obtain a relationΔθ≈(360/n)×(1/2)×(1/m).
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