METHOD OF FUEL-AIR MIXING IN COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE AND ENGINE FOR IMPLEMENTING THE METHOD Russian patent published in 2008 - IPC F02B31/00 F02M29/04 

FIELD: mechanical engineering; combustion engines.

SUBSTANCE: according to proposed method, in compression ignition engine one air flow designed for delivery into combustion chamber is swirled and fuel is introduced into flow at compression stroke. Additional flow of gas medium is introduced into air at combustion chamber input in form of jet distributed over periphery of flow, toroidal swirl is created in flow by delivering jets at angle from 30° to 90° to vector of axial velocity of air flow in direction of movement and tangentially to imaginary circumference located concentrically relative to air flow and having diameter from approximately 0.3 to approximately 0.8 of diameter of air flow. Gas medium is formed out of zone of introduction of jets, and acoustic oscillations are excited in each jet of jet forming section. Compression ignition internal combustion engine has at least one cylinder accommodating piston, cylinder head with intake and outlet branch pipes with intake and outlet valves, accordingly, air charge swirler, combustion chamber formed by piston crown, cylinder wall and head, and nozzle. Engine is furnished with air-fuel mixer located before intake valve in end face part of intake branch pipe in housing of which annular space and channels are made distributed over periphery of branch pipe. Axes of channels are orientated at angle from approximately 30° to approximately 90° to axis of intake branch pipe and tangentially to imaginary circumference arranged concentrically to intake branch pipe of diameter from approximately 0.3 to approximately 0.8 of diameter of intake branch pipe, and distributing unit connected to gas medium source. Annular space communicate with distributing unit through throttling channel.

EFFECT: provision of all-duty intensification of mixing, reduced toxicity and soot formation, increased engine power rating owing to increased fill factor.

3 cl, 12 dwg