| 摘要 |
<p>Provided is a common rail fuel injection system which can suppress pressure fluctuation within an injector due to fuel injection by a simple means, can obtain an even injection pressure characteristic, and can reduce harmful exhaust gas from a diesel internal combustion engine without enlarging sizes of a common rail and a fuel injection pipe. The common rail fuel injection system includes injectors having a fuel intake port and being provided for respective cylinders of a mutli-cylinder diesel internal combustion engine, a common rail accumulating pressurized fuel, a high-pressure supply pump supplying high-pressure fuel, a fuel supply pipe causing the common rail and the high-pressure supply pump to communicate with each other, and fuel injection pipes communicating with pressure supply ports provided in a common rail and causing injectors and the pressure supply ports to communicating with each other, wherein the fuel injection pipes cause at least three injectors to communicate with one another in series, the number N P of pressure supply ports is less than the number P I of injectors, and supply of high-pressure fuel to the respective injectors for the cylinders is performed through fuel injection pipes of two lines.</p> |
