| 摘要 |
A fuel delivery system (10) includes a fuel rail (22) to supply fuel to at least one fuel injector (26), a high pressure fuel pump (20) to provide fuel to the fuel rail (22), a fuel regulator (28) to regulate fuel pressure at the fuel rail (22), and flow restriction structure (30, 32) disposed in a fuel return line (34) between the fuel regulator (28) and the high pressure fuel pump (20). The flow restriction structure (30, 32) is constructed and arranged to substantially prevent bubbles from reaching the high pressure fuel pump (20) when the high pressure fuel pump is providing fuel in a certain flow range to the fuel rail (22). The flow restriction structure defines at least one flow restricting orifice.
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