Control strategy, apparatus and nonvolatile computer storage medium

A control strategy for a continuously variable valve lift mechanism, wherein two valves of the continuously variable valve lift mechanism for the same cylinder correspond to eccentric wheels with different profiles, and the control strategy comprises:

• after an engine is energized, the continuously variable valve lift mechanism self learning to determine a current position;
• if the self learning is successful, the continuously variable valve lift mechanism being located at a maximum lift position, preparing for starting the engine, and determining a regulating mode based on a starting temperature, wherein at the time of normal temperature start, regulation is performed from the maximum lift position to a minimum lift position, and at the time of low temperature start, regulation is performed from the maximum lift position to a position where the two valves for the same cylinder have a maximum lift difference;
• if the self learning fails, entering a preliminary start mode;
• entering a CVVL control mode based on an operation condition of the engine;
• and
• powering off the engine.

An apparatus, comprising:

• one or a plurality of processors;
• a memory;
• and
• one or a plurality of programs stored in the memory, when executed by the one or the plurality of processors, the one or the plurality of programs executing a control strategy for a continuously variable valve lift mechanism,
• wherein two valves of the continuously variable valve lift mechanism for the same cylinder correspond to eccentric wheels with different profiles, and the control strategy comprises:
• after an engine is energized, the continuously variable valve lift mechanism self learning to determine a current position;
• if the self learning is successful, the continuously variable valve lift mechanism being located at a maximum lift position, preparing for starting the engine, and determining a regulating mode based on a starting temperature, wherein at the time of normal temperature start, regulation is performed from the maximum lift position to a minimum lift position, and at the time of low temperature start, regulation is performed from the maximum lift position to a position where the two valves for the same cylinder have a maximum lift difference;
• if the self learning fails, entering a preliminary start mode;
• entering a CVVL control mode based on an operation condition of the engine;
• and
• powering off the engine.

A nonvolatile computer storage medium configured to store one or a plurality of programs, wherein when executed by one apparatus comprising one or a plurality of processors, the one or the plurality of programs enable the apparatus to execute a control strategy for a continuously variable valve lift mechanism,

• wherein two valves of the continuously variable valve lift mechanism for the same cylinder correspond to eccentric wheels with different profiles, and the control strategy comprises:
• after an engine is energized, the continuously variable valve lift mechanism self learning to determine a current position;
• if the self learning is successful, the continuously variable valve lift mechanism being located at a maximum lift position, preparing for starting the engine, and determining a regulating mode based on a starting temperature, wherein at the time of normal temperature start, regulation is performed from the maximum lift position to a minimum lift position, and
• at the time of low temperature start, regulation is performed from the maximum lift position to a position where the two valves for the same cylinder have a maximum lift difference;
• if the self learning fails, entering a preliminary start mode;
• entering a CVVL control mode based on an operation condition of the engine;
• and
• powering off the engine.