FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: central fuel meter is made in form of several (N) similar design simple and slow-acting fuel valves. Each fuel valve, by signal from separate circuit of electronic control unit, is periodically opened for fuel metering period of time not exceeding sum of N periods of maximum possible frequency of pulses from speed transmitter or from ignition system of internal combustion engine and it injects 1/N portion of fuel required for operation mode of internal combustion engine. At preset parameters of internal combustion engine, number N is defined only by possibility of reliable realization of simplified requirements to separate fuel valve. The greater the number N, the greater the time of opening and closing of fuel valve, and the smaller the amount of fuel handled by valve and the smaller the value of travel of valve movable portion. Moments of beginning of opening of each fuel valve determined by electronic control unit are periodically repeated at frequency N times smaller than pulse recurrence rate of speed transmitter, and phases of moments of beginning of opening of separate fuel valves in central fuel meter relative to each other are equally shifted cyclically in time through value of current interval between two neighboring pulses of speed transmitter. EFFECT: possibility of realization of central injection and metering of gaseous or liquid fuel in internal combustion engines of any power rating at any preset number of cylinders, any summary swept volume and any maximum speed of crankshaft of internal combustion engine. 2 cl, 2 dwg
Authors
Dates
1996-08-27—Published
1993-12-08—Filed