Internal-combustion engine having an engine braking device
AssigneeDaimlerChrysler AG
InventorsErwin Schmidt, Siegfried Sumser
Life of this patent
Estimating the term…
Abstract
An internal-combustion engine has an engine braking device which has brake valves by way of which the combustion chamber content of the cylinders can be diverted in the engine braking phase. In the engine braking operation, the brake valves are changed into the opening position. In order to increase the operational reliability of the engine braking device, a blocking device is provided which acts upon the brake valves and which can be adjusted between a holding position and a release position. In the holding position of the blocking device, the brake valves are held in the opening position.
Claims7
An internal-combustion engine having an engine braking device, comprising:
- an engine cylinder;
- a hydraulically operated brake valve arranged at said cylinder, said brake valve being movable between an open position and a closed position;
- and
- a hydraulic blocking device operatively coupled via a throttle valve to said brake valve, said blocking device being adjustable between a holding position in which the brake valve is held in the open position and a release position, and comprising a hydraulic feed pipe communicating the hydraulic supply line with the brake valve, a pressure sensor which measures a pressure in the feed pipe and an adjustable shut-off valve for shutting-off the hydraulic supply communicating with the throttle valve.
An internal-combustion engine having an engine braking device, comprising:
- an engine cylinder;
- a brake valve arranged at said cylinder, said brake valve being movable between an open position and a closed position;
- and
- a blocking device operatively coupled to said brake valve, said blocking device being adjustable between a holding position in which the brake valve is held in the open position and a release position, further comprising a prestressing device for adjusting a desired pressure wherein the brake valve is hydraulically actuated and the blocking device comprises:
- a hydraulic supply pump;
- a hydraulic supply pipe communicating the pump with the brake valve;
- and
- an adjustable shut-off valve for shutting-off the hydraulic supply.
Dependencies are inferred from the claim text.