| 发明名称 |
Fuel system protection in a multi-fuel internal combustion engine |
| 摘要 |
A method of protecting a direct injection fuel injector in a multi-fuel engine, the method includes selectively operating the multi-fuel engine with a directly injected fuel introduced through the direct injection fuel injector and a second fuel; when fuelling the multi-fuel engine with the second fuel, selectively commanding a fuel system protection technique when determining that the direct injection fuel injector requires cooling, an age of directly injected fuel is above a predetermined value, transmission status has changed, an engine shutdown event has occurred and a global positioning system signal indicates an engine shutdown event will occur; wherein the fuel system protection technique includes commanding that the directly injected fuel be a portion of total fuel consumed and reducing quantities of the second fuel that is injected so that total fuel consumed equals a desired amount of fuel measured on an energy basis. |
| 申请公布号 |
US9624864(B2) |
申请公布日期 |
2017.04.18 |
| 申请号 |
US201514678694 |
申请日期 |
2015.04.03 |
| 申请人 |
WESTPORT POWER INC. |
发明人 |
Dunn Mark E.;Wu Ning;Zhang Dehong;Karimi-Sharif Hamed;Bzymek Raymond |
| 分类号 |
F02D41/30;F02D19/06;F02D41/00;F02D19/08;F02D41/38;F02D41/22 |
主分类号 |
F02D41/30 |
| 代理机构 |
|
代理人 |
Mager Carie C.;Kyle C. Larry |
| 主权项 |
1. A method of protecting a direct injection fuel injector in a multi-fuel engine, said method comprising:
selectively operating said multi-fuel engine with at least one of a directly injected fuel introduced through said direct injection fuel injector and a second fuel; when fuelling said multi-fuel engine with said second fuel, selectively commanding a fuel system protection technique when determining that at least one of said direct injection fuel injector requires cooling based on a temperature model for said direct injection fuel injector, an age of directly injected fuel is above a predetermined value, transmission status has changed, an engine shutdown event has occurred and driving pattern recognition predicts a shutdown event will occur; wherein said fuel system protection technique comprises commanding that said directly injected fuel be a portion of total fuel consumed and reducing quantities of said second fuel that is injected so that total fuel consumed equals a desired amount of fuel measured on an energy basis. |
| 地址 |
Vancouver CA |
