A group of Mitsubishi 2 MW generators [MGS1500B – S16R-PTA-S] converted to run a mix of diesel and natural gas in the Kurdistan Region of Iraq for the sovereign oil company.
There is flexibility with the quality of gas an operator uses. An operator can run on a lower-cost, lower-quality gas at a lower substitution rate, or use a higher-quality fuel at a slightly higher cost with a higher substitution rate.
In the United States, dual fuel engines must meet applicable compression ignition emissions regulations. While specifics may vary, typically an oxidation catalyst to lower carbon monoxide (CO) and non-methane hydrocarbon (NMHC) emissions is required.