Control system for variable valve lift system of internal combustion engine, has variable valve control module which commands one of first transition from a variable valve low-lift profile to variable valve high-lift profile

摘要

The system includes a variable valve control module which commands one of a first transition from a variable valve low-lift profile to a variable valve high-lift profile, and a second transition from a variable valve high-lift profile to a variable valve low-lift profile based on a total delay. The total delay is estimated by a delay module based on at least one of a measured delay and an estimated delay of the variable lift system. The control module can be an application specific integrated circuit (ASIC), an electronic circuit, a processor, a memory that executes one or more software or firmware programs, a combinational logic circuit. An independent claim is also included for a variable valve lift system control method.