TECHNICAL ASPECTS OF ENVIRONMENTAL SAFETY OF NATURAL GAS FUELLED VEHICLES
The goal of this research was to study the infuence of mixture formation on the level of harmful exhaust of a natural gas fuelled engine, evaluation of the engine performance with different air-fuel mixture compositions fnding the ways to satisfy the prescribed exhaust level norms. The research work has been conducted using a 6-cylinder row diesel engine of a foreign make, equipped with a turbo charger. The engine had the volume of 12 liters and capacity of 190 kWt. After its conversion to gas fuel the engine reached the capacity level of 230 kWt and its exhaust remained compliant with all modern standards regarding toxicity levels. The article includes sample design solutions for a gas engine converted from a diesel engine. A model of fuel supply control algorithm is provided. Test results quoted.