Engine knock control with knock pulse duration adjustment

摘要: A vehicle mounted, spark ignited, internal combustion engine subject to bursts of ringing knock vibration varying duration corresponding intensity includes apparatus effective generate pulses in response the and duration. Further delays trailing edge each pulse by a common predetermined favorably reduce ratio durations such before application control reducing parameter engine. The reduced between short long provides more uniform over total range intensity. may also include delay leading eliminate noise improve signal ratio. If so, this is inserted prior latter greater than that former.