Mode of control of the heating capacity of a hydrodynamic brake
AssigneeDaimler-Benz Aktiengesellschaft
InventorsWolf-Dieter Kurz, Hans Hanke, Andreas Braatz
Life of this patent
Estimating the term…
Abstract
Method of and apparatus for control of the heating capacity of a hydrodynamic brake which is associated with a liquid-cooled internal combustion engine, in the cooling medium circuit of which heat exchangers, a cooling medium circulating pump and the hydrodynamic brake acting as a heater are arranged. A regulation of the state of charge of the working chamber of the hydrodynamic brake occurs by a pressure regulator valve. In the case of a method and apparatus for controlling the heating capacity taking an available drive power into consideration, the pressure regulator valve which influences the heating capacity is controllable as a function of the load of the internal combustion engine.
Claims22
A method of controlling the heating capacity of a hydrodynamic brake for a liquid cooled internal combustion engine controlled in response to movement of an acceleration pedal, the engine having a cooling circuit comprising at least one heat exchanger, a cooling medium circulating pump, the hydrodynamic brake serving as a heat exchanger and a pressure regulator valve means actuatable in response to movement of the acceleration pedal for regulating the state of charge of the hydrodynamic brake, the steps comprising
- circulating the cooling medium through the cooling circuit, and
- controlling the heating capacity of the hydrodynamic brake as a function of the load of the internal combustion engine by actuating at least the pressure regulator valve means by movement of the accelerator pedal.
A method of controlling the heating capacity of a hydrodynamic brake for a liquid cooled internal combustion engine operably responsive to movement of an accelerator pedal and having a cooling circuit comprising at least one heat exchanger, a cooling medium circulating pump, the hydrodynamic brake serving as a heat exchanger, a pressure regulator valve means for regulating the state of charge of the hydrodynamic brake and a flow regulator valve means responsive to movement of the accelerator pedal, the steps comprising
- circulating cooling medium through the cooling circuit, and
- controlling the heating capacity of the hydrodynamic brake as a function of the load of the internal combustion engine by actuating the flow valve means by movement of the accelerator pedal.
Apparatus for controlling the heating capacity of a hydrodynamic brake for a liquid cooled internal combustion engine operably responsive to movement of an accelerator pedal, the engine having a cooling circuit comprising at least one heat exchanger, a cooling medium circulating pump, the hydrodynamic brake serving as a heat exchanger and a pressure regulator valve means for regulating the state of charge of the hydrodynamic brake,
- means for controlling the heating capacity of the hydrodynamic brake as a function of the load of the internal combustion engine by actuating at least the pressure regulator valve means and
- means for controlling the actuation of the pressure regulator valve means in response to movement of the accelerator pedal.
Apparatus for controlling the heating capacity of a hydrodynamic brake for a liquid cooled internal combustion engine operably responsive to movement of an accelerator pedal and having a cooling circuit comprising at least one heat exchanger, a cooling medium crculating pump, the hydrodynamic brake serving as a heat exchanger, a pressure regulator valve means for regulating the state of charge of the hydrodynamic brake and a flow regulator valve means responsive to movement of the accelerator pedal,
- means for circulating cooling medium through the cooling circuit, and
- means for controlling the heating capacity of the hydrodynamic brake as a function of the load of the internal combustion engine by actuating the flow valve means by movement of the accelerator pedal.
Dependencies are inferred from the claim text.