| 摘要 |
The engine includes in at least one engine cylinder, an extra exhaust valve operated by a hydraulic plunger cylinder device. The engine has a fuel system with a unit injector, the cam and rocker arm of which also drive a pump arrangement, which has a pump chamber communicating with the low pressure side of the fuel system. The plunger of the plunger cylinder device is loaded by the pressure in the pump chamber. When a valve disposed in the communication between the fuel system and the pump chamber is closed, the fuel volume enclosed during the pump stroke will displace the plunger, opening the exhaust valve. |
