Abstract
The purpose of the work is to develop methods of managing the cycle of bifuel and single-fuel vehicleswith engines running both on petrol and gas fuel as well as physically and mathematically reasonable algorithmsfor an electronic control system. On the basis of full-scale tests of an internal combustion spark-ignition pistonengine and a technique developed for designing an ejeсtor with non-stationary physical parameters of workingbodies a method of compensating power losses by ejecting a portion of air with the help of pressure differenceon the valve of a gas electromagnetic injector is proposed. On the basis of the theoretical analysis and experimentaldata an algorithm of determining the fuel injection rate taking into account the subcritical or critical fueldischarge from the injector nozzle, the change in the speed of sound, the gas fuel pressure undershoot in the processof fuel feeding and the power supply voltage on the electromagnetic coil of the gas injector is developed. Amethod of determining the ignition advance angle when switching from petrol to gas fuel is developed for anelectronic control system of an internal combustion spark-ignition engine which serves as the basis for calculatingthe adjusting factors for liquefied petroleum gas and compressed natural gas.
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