METHOD FOR CONTROLLING FUEL SUPPLY SYSTEM TO INTERNAL COMBUSTION GAS ENGINE WITH TWO-SECTIONAL POWER SUPPLY SYSTEM Russian patent published in 2021 - IPC F02D19/02 F02D41/30 F02M21/02 

FIELD: power systems.

SUBSTANCE: invention can be used in power systems for gas internal combustion engines. A method for controlling a fuel supply system to a gas internal combustion engine with a two-section power supply system includes alternating and/or joint operation of both the section (7) of the centralized staged supply of gaseous fuel in the form of compressed combustible gas (CCG) and the main section (8) of the distributed gas fuel supply, installed directly in the intake manifold and made with the possibility of phased supply of gas fuel to each cylinder (17) separately through separate injectors (16) of the gas injector ramps (15). The main section (8) of the distributed supply of gaseous fuel to each cylinder separately is made with the possibility of independent continuous regulation of the phased supply of gaseous fuel to each nozzle (16) from the ramp (15) of the injectors for supplying gaseous fuel to each individual cylinder (17) in accordance with their order work in the internal combustion engine. Section (7) of the centralized staged supply of gas fuel is made with the possibility of a stepwise change in the supply through the block (9) of valve-injectors (10) with at least one stage of supply. The amount of supply of each of the stages of the centralized staged gas fuel supply section (7) is less than or equal to the maximum supply of the main section of the distributed gas fuel supply. The regulation of the operation of the gas internal combustion engine is carried out sequentially. Initially, the gas fuel supply is continuously changed in the range from the minimum to the maximum supply of the main section (8) of the distributed gas fuel supply. Then, if it is necessary to further exceed its specified maximum value, the steps of the staged feed of the centralized section (7) are sequentially switched on, starting from the first minimum stage by opening one injector valve (10) of the block of the centralized staged gas fuel supply section to its maximum supply by opening all valves - nozzles (10) of the unit, which is made with the possibility of a stepwise change in the supply of CCG by the unit (9) of valve-nozzles (10) through the evaporator-swirler (11). Further, between the switching of the steps, they are adjusted, continuously changing within the range from the minimum to the maximum supply of the main section (8) of the distributed supply with hysteresis in both directions, both increasing and decreasing the supply of CCG within the specified limits in accordance with the road situation until the next maximum supply of the main section (8) distributed supply of gas fuel and the need to further increase the total supply of fuel by both sections (7) and (8). Next, they move to the next stage of the section (7) of the centralized staged gas fuel supply, and the supply of the main section (8) of the distributed gas fuel supply is reduced to a minimum. Then, the supply regulation is sequentially repeated within the limits of the possible hysteresis supply of the main section (8) of the distributed gas fuel supply at each subsequent stage of the centralized supply section (7) until it is necessary to exceed the next limit above the specified supply. At the end, if it is further required, the excess is structurally achieved the maximum possible fuel supply by both sections (7) and (8). If it is necessary to reduce the supply of gaseous fuel, the above sequence of actions is repeated in reverse order from the structurally maximum possible fuel supply by both sections (7) and (8) to the minimum supply of one separately operating main section (8) of the distributed gaseous fuel supply. In this case, the current supply of CCG by each section and air is measured in uniform mass or weight units.

EFFECT: simplifying the sequence of actions of the method for supplying fuel to a gas internal combustion engine with a two-section power supply system.

1 cl, 5 dwg