| 发明名称 |
METHOD AND ENGINE BRAKE SYSTEM TO CONTROL AN ENGINE BRAKE OF A VEHICLE |
| 摘要 |
A method and system to control an engine brake of a vehicle is provided. The vehicle is provided with a combustion engine having cylinders, an exhaust pressure governor (EPG) regulating the air flow out of the cylinders, an intake air throttle valve (ITV) regulating the air flow into the cylinders, pressure sensing means for sensing a pressure downstream of the cylinders, wherein an engine braking torque can be regulated in two different engine braking modes (a, b), a first engine braking mode (a), in which the air flow through the EPG is regulated by a closed loop control using the pressure downstream of the cylinders and the ITV is regulated in a feed forward control dependent of the engine speed and a demanded brake torque; a second engine braking mode (b), in which the EPG is regulated in a feed forward control dependent of the engine speed and the demanded brake torque, and the my regulates the braking torque by a closed loop control using the pressure downstream of the cylinders. |
| 申请公布号 |
US2015047601(A1) |
申请公布日期 |
2015.02.19 |
| 申请号 |
US201214386380 |
申请日期 |
2012.04.25 |
| 申请人 |
Hellemann Fabian |
发明人 |
Hellemann Fabian |
| 分类号 |
F02D9/06;F02D41/14;F02D9/02;F01L13/06 |
主分类号 |
F02D9/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. Method to control an engine brake of a vehicle, the vehicle is provided with a combustion engine having cylinders, an exhaust pressure governor (EPG) regulating the air flow out of the cylinders, an intake air throttle valve (ITV) regulating the an flow into the cylinders, pressure sensing means for sensing a pressure downstream of the cylinders, wherein an engine braking torque can be regulated in two different engine braking modes (a, b),
a first engine braking mode (a), in which the air flow through the EPG is regulated by a closed loop control using the pressure downstream of the cylinders and the ITV is regulated in a feed forward control dependent of the engine speed and a demanded brake torque; a second engine braking mode (b), in which the EPG is regulated in a feed forward control dependent of the engine speed and the demanded brake torque, and the ITV regulates the braking torque by a closed loop control using the pressure downstream of the cylinders. |
| 地址 |
Goteborg SE |
