FUEL SUPPLY CONTROL SYSTEM AND OPERATING METHOD THEREOF Russian patent published in 2010 - IPC F02M61/18 F02M51/06 F02M47/02 

FIELD: engines and pumps.

SUBSTANCE: fuel supply control system in internal combustion engine includes an atomiser; at that, atomiser is hydraulically operated with two non-spring-loaded locking elements and independent pilot valves located in independent control chambers with two independent intermediate control chambers, each of which is connected to its independent high pressure hydraulic accumulator. Locking elements are made coaxially without separation of holes of various levels or with their separation. In this case, in spraying device there made are annular grooves between holes of various levels interacting with annular projections of corresponding locking elements. In addition, system is equipped with two independent control units of fuel supply with various control programmes, which are made with possibility of axial linear movement along axis of distribution shaft, each of which consists of one shaped cam per an atomiser with programme of at least one fuel supply cycle. Cam is provided with section with alternate angle, of constant or variable height along axis of distribution shaft, plunger installed on platform, hydraulic cylinder installed on the base with a hole, and spring is installed between platform and base. In addition, system is equipped with low pressure hydraulic accumulator. Negative pressure is created, opened, two independent pilot valves are connected in series, two independent external cavities of varying final volume, at least two independent control chambers of independent pilot valves, at least two independent control chambers of locking elements, to which fuel is supplied at least from one high pressure hydraulic accumulator through at least two independent intermediate control chambers, fuel is supplied at least for two locking elements, at least through two levels of holes of spraying device simultaneously or at different times, pressure is created in two independent cavities of varying final volume, fuel is supplied under pressure through two independent chambers of independent pilot-operated valves to the second external cavity of final volume, closed. Two independent pilot valves, simultaneously or at different times, supply pressure to two locking elements from above, fuel is tripped, there continuously changed is time of filling the final volume or time of filling the final volume and level of final volume at different times of simultaneously, manually or automatically.

EFFECT: implementation of maximum indicated efficiency and minimisation of fuel flow for control, implementation of monitoring of fuel combustion and optimisation of fuel combustion at changing conditions.

7 cl, 5 dwg