METHOD FOR VEHICLE ENGINE IGNITION Russian patent published in 2015 - IPC F02P5/00 

FIELD: transport.

SUBSTANCE: method consists in the following: with each engine revolution time of cylinder piston passing through characteristic (reference) point is fixed, crankshaft revolution period and engine load are measured, from results of these measurements optimal timing angle is determined and at the moment of cylinder piston passing through point advancing top dead centre for an angle equal to calculated optimal timing angle the ignition pulse is generated in ignition coil control circuit and on ignition plugs, additionally, engine temperature, air-and-fuel mixture temperature and fuel injector opening duration are measured, and when optimal timing angle is determined pressure in engine cylinder versus crankshaft angle response characteristic is calculated for each of its possible values with regard to results of these measurements, according to calculated response characteristic, the crankshaft angle is determined for which this pressure is maximal, herewith, as rough value of optimal timing angle that value is assumed at which crankshaft angle corresponding to maximum pressure in cylinder is most close to specified, selected in the range of 185° to 195°, actual crankshaft angle is measured at which pressure in cylinder is maximal, and as refined value of optimal timing angle its rough value decreased by difference between specified and measured in previous crankshaft revolution actual crankshaft angle value corresponding to pressure maximum in cylinder is assumed.

EFFECT: higher combustion efficiency of air-and-fuel mixture.

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