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System and method for controlling engine knock using electro-hydraulic valve actuation

United States Patent

December 10, 2013
View the Complete Patent at the US Patent & Trademark Office
A control system for an engine includes a knock control module and a valve control module. The knock control module adjusts a period that one or more of an intake valve and an exhaust valve of a cylinder are open based on engine knock corresponding to the cylinder. The valve control module, based on the adjusted period, controls the one or more of the intake valve and the exhaust valve using one or more hydraulic actuators.
Brennan; Daniel G. (Brighton, MI)
GM Global Technology Operations LLC (
12/ 850,930
August 5, 2010
STATEMENT OF GOVERNMENT RIGHTS This invention was produced pursuant to United States Government Program No. DE-FC26-05NT42415 with the Department of Energy (DoE). The U.S. Government has certain rights in this invention.