Patent ID: 9702279
Date: 2017-07-11
CPC Classifications: F01L,Y10T

Claim:
1. A variable valve lift (VVL) system for operating at least one engine valve of an internal combustion engine comprising: a VVL rocker assembly operable in a first lift mode and a second lift mode; a valve position sensor for monitoring a position of the at least one engine valve and for providing data indicative of a position of the at least one engine valve; and an engine control unit (ECU) operatively connected to the VVL rocker assembly and in communication with the valve position sensor, the ECU programmed to determine, from the data indicative of the position of the at least one engine valve, a current lift mode, whether the VVL rocker assembly is in said first lift mode or said second lift mode, wherein the ECU is programmed to determine a maximum valve position from the data indicative of the position of the at least one engine valve.