CONTROL METHOD OF GAS ENGINE AND GAS ENGINE SYSTEM Russian patent published in 2011 - IPC F02D19/02 F02M21/02 

FIELD: engines and pumps.

SUBSTANCE: control method of gas engine system consists in supply of air through turbocharger, its mixing with fuel gas and supply of mixed gas to combustion chamber. Fuel gas flows through fuel gas supply line and its amount is controlled through fuel flow control valve. At low calorific value of fuel gas or high engine output power some portion of fuel gas is supplied to upstream fuel gas supply lines (30) relative to fuel flow control valve (20). Discharged fuel gas is supplied to combustion chamber through discharge control valve (33). The rest portion of fuel gas is supplied through the main gas supply line (26) and then to fuel flow control valve (20). Discharged fuel gas flow is set lower than the flow value of fuel gas on discharge side (26). At high calorific value of fuel gas or low output power of engine the discharge control valve (31) is closed to supply the fuel gas only to the main gas supply line (26). Branch line of discharge gas supply line (32), which is connected to combustion chamber, can be equipped with gas control valve (33). Also, the invention deals with gas engine system in which the above method is implemented.

EFFECT: control of gas engine is provided depending on calorific value of fuel gas and output power of engine, and spread of flow of potentially hazardous air-gas mixture is decreased.

6 cl, 2 dwg