| 发明名称 | Method for diagnosing a clogging of an injector in an internal combustion engine | ||
| 摘要 | A method is provided for diagnosing a clogging of an injector in an internal combustion engine equipped with a fuel rail and with a plurality of fuel injectors hydraulically connected to the fuel rail. The method includes, but is not limited to determining a value of a pressure drop in the fuel rail due to a quantity of fuel injected by a tested injector, and diagnosing the clogging of the tested injector if the determined pressure drop value is lower than a threshold value of this pressure drop. | ||
| 申请公布号 | US8897996(B2) | 申请公布日期 | 2014.11.25 |
| 申请号 | US201113316623 | 申请日期 | 2011.12.12 |
| 申请人 | GM Global Technology Operations LLC | 发明人 | Massaro Antonio |
| 分类号 | F02M65/00;F02D41/38;F02D41/22;F02M51/00;F02D41/24 | 主分类号 | F02M65/00 |
| 代理机构 | Ingrassia Fisher & Lorenz, P.C. | 代理人 | Ingrassia Fisher & Lorenz, P.C. |
| 主权项 | 1. A method for diagnosing a clogging of an injector in an internal combustion engine equipped with a fuel rail and with a plurality of fuel injectors hydraulically connected to the fuel rail, the method comprising: injecting a quantity of fuel by a tested injector; determining a value of a pressure drop in the fuel rail due to fuel injection; diagnosing the clogging of the tested injector if the value of the pressure drop is lower than a threshold value of the pressure drop; and determining the value of the pressure drop in the fuel rail for each injector, each value of the pressure drop due to the quantity of fuel injected by a related injector; and determining the threshold value based at least in part on an average of values of the pressure drop. | ||
| 地址 | Detroit MI US | ||