Method for eliminating detonation in a cylinder of an...

F - Mech Eng,Light,Heat,Weapons – 02 – P

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F02P 5/153 (2006.01)

Patent

CA 2397477

A method eliminates detonation in an internal combustion engine (10) by identifying conditions that identify the imminence thereof. The method centers about the pressure inside the cylinder (16) of the internal combustion engine (10). The method tracks the pressure and when small rapid changes or fluctuations (38) in the pressure occur, the ignition timing is advanced for that particular cylinder (16). An alternative method utilizes a model of pressure based on an array of inputs and how the pressure should act based thereon. The method may also be used to maximize performance of the output of each cylinder (16) by retarding the ignition timing until the small fluctuations (38) appear. The ignition timing could immediately be advanced to prevent a detonation thus identifying a maximized output performance without reaching a detonation condition.

L'invention concerne un procédé permettant d'éliminer les détonations dans un moteur (10) à combustion interne par identification des conditions indiquant l'imminence d'une détonation. Ce procédé se centre autour de la pression interne du cylindre (16) du moteur (10) à combustion interne. Le procédé consiste à surveiller la pression et à avancer le réglage de l'allumage pour ce cylindre (16) en particulier lorsque se produisent de petits changements rapides ou fluctuations (38) de pression. Un autre procédé consiste à utiliser un modèle de pression basé sur un réseau d'entrées et sur la façon dont la pression réagit. Ce procédé peut également être utilisé pour maximiser la performance de la sortie de chaque cylindre (16) en retardant le réglage de l'allumage jusqu'à l'apparition des petites fluctuations (38). Le réglage de l'allumage peut être avancé immédiatement pour prévenir une détonation, identifiant ainsi une performance de sortie maximisée sans atteindre des conditions de détonation.

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