The analysis of ways to ensure low emission (methane inclusive) from natural gas fuelled engines

The results of research work on unsupercharged and turbocharged V-type engines with natural gas fuelling system have been presented in the paper. For lower emission the original gas supply system has been designed which ensures very proper control of air-fuel ratio in both cylinder banks. It was stated, that lowering the emission needs very precise control of gas-air ratio, application of lean mixture on partial loads, control of turbocharging and appropriate choice of converters with palladium catalytic coach.

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