Variable intake valve and exhaust valve timing strategy for improving performance in a hydrogen fueled engine

A method for operating a hydrogen fueled internal combustion engine, the engine also including a combustion chamber, an intake manifold, an exhaust manifold, at least one intake valve, at least one exhaust valve, a hydrogen injector, and a compression device, the method comprising:

• compressing air using the compression device;
• injecting hydrogen and mixing at least said hydrogen with air discharged from the compression device;
• and
• opening the intake valve to induct at least air into the combustion chamber wherein the intake valve opening time varies with a first operating condition to reduce the tendency of backfiring, pre-ignition, and/or backflash;
• and
• varying the exhaust valve closing time with a second operating condition.

A system for a hydrogen fueled engine, comprising:

• a combustion chamber;
• a hydrogen injector;
• a compression device;
• a controller to vary an intake valve opening timing and an exhaust valve closing timing with an operating condition to reduce backfiring, pre-ignition, and/or backflash.