| 摘要 |
The present invention relates to a combustion engine as well as a method for engine braking in such a combustion engine comprising at least one cylinder (2) having a cylinder volume (6) and a piston displaceable in said cylinder (6), an intake air channel (9) having a first pressure PI, a first inlet valve (7) arranged between the intake air channel (9) and the cylinder volume (6), an exhaust air channel (10) having a second pressure P2, a first outlet valve (8) arranged between the cylinder volume (6) and the exhaust air channel (10), and a storage reservoir (11) having a third pressure P3 that is higher than said first pressure PI and said second pressure P2, the storage reservoir (11) being arranged in controllable fluid communication with the cylinder volume (6). The method being characterized by taking place during two-stroke cycle and comprises the steps of, displacing the piston from the upper dead centre towards the lower dead centre, keeping the first inlet valve (7) open during at least a part of the time the piston is displaced from the upper dead centre to the lower dead centre, displace the piston from the lower dead centre towards the upper dead centre, and keeping the fluid communication between the storage reservoir (11) and the cylinder volume (6) open during at least a part of the time the piston is displaced from the lower dead centre to the upper dead centre. |
