Device for setting the movement behavior of gas-exchange valves of an internal combustion engine
AssigneeSiemens Aktiengesellschaft
InventorsErhard Otto, Gerd Rösel, Wolfgang Schulte, Hong Zhang
Life of this patent
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Abstract
A device for setting movement behavior of gas-exchange valves of an internal combustion engine with a camshaft. The device has a control unit that generates a setting signal for a setting element of a setting device that adjusts the camshaft. A pilot control system is provided which additively corrects the setting signal including determining an estimated value for adjusting the camshaft without taking account of the delay time of the setting device.
Claims6
A device for setting movement behavior of gas-exchange valves of an internal combustion engine having a camshaft, the device comprising:
- a setting device having a setting element to be connected to the camshaft and being a system subject to a delay time;
- a control unit connected to said setting element and generating a setting signal received by and controlling said setting element for adjusting the camshaft;
- and
- a pilot control system for additively correcting the setting signal and connected to said control unit, said pilot control system determining an estimated value for adjusting the camshaft without taking account of the delay time of said setting device, and said pilot control system correcting the setting signal in dependence on the estimated value and a specified required value.
Dependencies are inferred from the claim text.