| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine fuel piping structure, capable of cooling the fuel flowing in the fuel circuit of a diesel engine, in particular one capable of fuel return circuit and including a fuel supply circuit which has no wasteful volume. SOLUTION: Part of a fuel circuit located between a fuel tank 5 and a unit injector 2 is formed in a suction manifold 3, so that it capable of cooling with sucked air. A fuel supply piping 8 and a fuel return piping 9 are connected with the central parts in the longitudinal direction of fuel circuits 3a, 3b, 3c, 3d formed in the suction manifold 3. The circuits are processed separately from the two ends of each about the longitudinal direction of the suction manifold 3, which should facilitate processing. |
