Variable intake valve and exhaust valve timing strategy for...

Details Variable intake valve and exhaust valve timing strategy for... Variable intake valve and exhaust valve timing strategy for...

2005-11-29

2009-02-10

Huynh, Hai H (Department: 3741)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S527000, C123S435000, C123S436000, C123S559100, C123SDIG013

Reexamination Certificate

active

07487750

ABSTRACT:
A method for a hydrogen fueled internal combustion engine to reduce backfiring, pre-ignition, and/or backflash, 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, a compression device, and a variable valve timing system coupled to the intake valves. The method comprises 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 an operating condition.

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