Process and device for evaluating the quality of a fuel-air...

Details Process and device for evaluating the quality of a fuel-air... Process and device for evaluating the quality of a fuel-air...

G - Physics

01

N

G01N 27/00 (2006.01) F02D 41/14 (2006.01) F02P 17/12 (2006.01) G01N 33/00 (2006.01) G01N 33/22 (2006.01)

Patent

CA 2200661

The quality of a fuel-air mixture shall be evaluated by a process and a device during a phase of combustion, especially in a spark ignition engine, in order to make possible a low-emission, fuel-saving and knock-free operation. An electrical testing pulse (P) is sent for this purpose to the spark plug during the phase of combustion (V) following the ignition pulse (Z). The effect of the actual fuel-air mixture of the combustion chamber on the testing pulse is detected and evaluated as an electrical variable.

La qualité d'un mélange carburant-air doit être évaluée au moyen d'un procédé et d'un dispositif durant une phase de combustion, particulièrement dans un moteur à explosion, pour rendre possible un fonctionnement économique à faible taux d'émission et sans détonations. Une impulsion électrique (P) d'essai est envoyée à cette fin à la bougie durant la phase de combustion (V) après l'impulsion d'allumage (Z). L'effet du mélange carburant-air réel de la chambre de combustion sur l'impulsion d'essai est détecté et évalué comme variable électrique.

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