Recent emission regulations and the trend towards utilization of waste gases and renewable fuels have generated a rising interest in using gas engines in applications where Diesel/HFO engines were commonly used. Since various types of gas engines with distinct advantages and shortcomings are available in the market, there is an uncertainty about the suitability of these engines for applications with a demand for fast transient response behaviour.
This paper explains general physical and thermodynamic properties of the most common industrial gas engine types. We point out what should be observed when using these engines for stationary or maritime applications. Automotive applications are not covered in this paper.