| 摘要 |
PROBLEM TO BE SOLVED: To reduce pulsation resonance pressure and to suppress fluctuation in fuel pressure by specifying resin pipe volume with a fuel passage formed inside with the lateral cross sectional shape of a circular arc part and a straight part. SOLUTION: A resin delivery pipe 1 is made of a hollow resin pipe made of composite resin so that a fuel passage is formed inside, injection passages of the number same to that of cylinders are formed in the longitudinal direction with an interval, and connectors are provided on one end in the longitudinal direction. The lateral cross section (cross section orthogonal to the longitudinal direction) of the resin delivery pipe 1 has at least one circular arc part 4 and at least one straight part 5 (flat part when seen three dimensionally). And pulsation in the resin delivery pipe 1 generated by fuel injection is buffered by displacement of the straight part 5. Here, the volume of the resin delivery pipe 1 is made >=100 cm<3> . |
