Method for Operating an Internal Combustion Engine, in Particular of a Motor Vehicle, in an Engine Braking Operation
AssigneeDaimler AG
InventorsMarc Oliver WAGNER, Thomas SCHUHMACHER
Life of this patent
Estimating the term…
Abstract
A method for operating an internal combustion engine, in particular of a motor vehicle, in an engine braking operating, having at least one engine braking mode and having at least one cylinder at least of a first cylinder bank, where the at least one cylinder has at least one outlet valve and at least one inlet valve, where, in a first engine braking mode, an outlet stroke of all outlet valves of the at least one cylinder of the first cylinder bank of the internal combustion engine is permanently switched off.
Claims9
-6. (canceled)
A method for operating an internal combustion engine of a motor vehicle in an engine braking operation, comprising the steps of:
- in a first engine braking mode, switching off an outlet stroke of all outlet valves of all cylinders of a first cylinder bank;
- adjusting an opening time point of all inlet valves of all cylinders of the first cylinder bank to late;
- in the first engine braking mode, closing all outlet valves of all cylinders of a second cylinder bank for a first time, then opening all outlet valves of all cylinders of the second cylinder bank for a first time, then closing all outlet valves of all cylinders of the second cylinder bank for a second time, and then opening all outlet valves of all cylinders of the second cylinder bank for a second time, in order to release compressed gas respectively from all cylinders of the second cylinder bank by respective pistons guided in all cylinders of the second cylinder bank;
- and
- in the first engine braking mode, adjusting an opening time point of all inlet valves of all cylinders of the second cylinder bank to late.
A method for operating an internal combustion engine of a motor vehicle in an engine braking operation, comprising the steps
- in a first engine braking mode, switching off an outlet stroke of all outlet valves of all cylinders of a first cylinder bank;
- adjusting an opening time point of all inlet valves of all cylinders of the first cylinder bank to late:
- in the first engine braking mode, opening all outlet valves of all cylinders of a second cylinder bank in a region of an upper dead center and then closing all outlet valves of all cylinders of the second cylinder bank, in order to release compressed gas respectively from all cylinders of the second cylinder bank by respective pistons guided in all cylinders of the second cylinder bank;
- and
- in the first engine braking mode, adjusting an opening time point of all inlet valves of all cylinders of the second cylinder bank to late.
Dependencies are inferred from the claim text.