INTERNAL COMBUSTION ENGINE OPERATING ON GASEOUS FUEL AND CONTROL METHOD OF INTERNAL COMBUSTION ENGINE OPERATING ON GASEOUS FUEL Russian patent published in 2011 - IPC F02D19/02 F02M21/02 

FIELD: engines and pumps.

SUBSTANCE: in internal combustion engine operating on gaseous fuel the ignition device (16; 60, 62; 64; 66) is arranged in the direction of gaseous fuel flow injected through injection valve (40) to combustion chamber (10). Ignition device can directly ignite fuel flow and control unit (70) intended to monitor the actuation time of ignition device (16; 60, 62; 64; 66) and actuation time of injection valve (40) in the cylinder for the purpose of implementing the change by means of this type of combustion of gaseous fuel injected through injection valve to cylinder between combustion of pre-mixed air-and-fuel mixture and diffusion combustion; at that, control unit (70) chooses as the operating mode of engine the operation on poor pre-mixed air-and-fuel mixture for pre-mixing and combustion of gaseous fuel at poor ratio of the quantity of air to the quantity of fuel when the engine operates in the specified working area, and chooses as the operating mode of the engine the diffusion combustion for diffusion combustion of gaseous fuel when the engine operates in the area of higher loads then the specified working area.

EFFECT: increasing efficiency and decreasing the level of exhaust from the area of low loads to the area of high loads.

20 cl, 37 dwg