| 发明名称 |
ROBUST DIRECT INJECTION FUEL PUMP SYSTEM |
| 摘要 |
A method for a PFDI engine may comprise, during a first condition, comprising direct-injecting fuel to the PFDI engine, estimating a fuel vapor pressure, and setting a fuel lift pump pressure greater than the fuel vapor pressure by a threshold pressure difference, and during a second condition, comprising port-fuel-injecting fuel to the PFDI engine, setting a DI fuel pump command signal greater than a threshold DI fuel pump command signal without supplying fuel to a DI fuel rail. |
| 申请公布号 |
US2015198081(A1) |
申请公布日期 |
2015.07.16 |
| 申请号 |
US201414155250 |
申请日期 |
2014.01.14 |
| 申请人 |
Ford Global Technologies, LLC |
发明人 |
Surnilla Gopichandra;Pursifull Ross Dykstra;Meinhart Mark;Basmaji Joseph F. |
| 分类号 |
F02B17/00 |
主分类号 |
F02B17/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for a PFDI engine, comprising:
during a first condition, including direct-injecting fuel to the PFDI engine,
estimating a fuel vapor pressure, andsetting a fuel lift pump pressure greater than an estimated fuel vapor pressure by a threshold pressure difference; and during a second condition, including port-fuel-injecting fuel to the PFDI engine,
setting a DI fuel pump command signal greater than a threshold DI fuel pump command signal without supplying fuel to a DI fuel rail. |
| 地址 |
Dearborn MI US |
