Invention Grant
- Patent Title: Adaptive closed-loop knock control for a turbocharged engine
- Patent Title (中): 涡轮发动机的自适应闭环控制
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Application No.: US752569Application Date: 1991-09-05
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Publication No.: US5231830APublication Date: 1993-08-03
- Inventor: Robert Entenmann , Bernhard Stengel , Stefan Unland , Matthias Philipp , Oskar Torno , Ulrich Rothhaar , Siegfried Rohde
- Applicant: Robert Entenmann , Bernhard Stengel , Stefan Unland , Matthias Philipp , Oskar Torno , Ulrich Rothhaar , Siegfried Rohde
- Applicant Address: DEX Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DEX Stuttgart
- Priority: DEX3911748 19890411
- Main IPC: F02B37/12
- IPC: F02B37/12 ; F02D23/00 ; F02D43/00 ; F02D45/00 ; F02P5/15 ; F02P5/152 ; F02P5/153
Abstract:
The method for closed-loop knock control of a internal combustion engine, includes retarding the ignition angle when at least one cylinder knocks and then resetting the ignition angle at a later time. For internal combustion engines with a turbocharger, the method also includes reducing the boost pressure when an ignition-angle limiting value dependent on an exhaust gas temperature is reached, and then increasing the boost pressure again as soon as the ignition-angle limiting value is again crossed due to resetting of the ignition angle. The ignition angle and boost pressure values established are stored as a function of the respective operating condition of the internal combustion engine for adaptive process control and used as starting values when the same engine operating conditions are again reached.
Public/Granted literature
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