Table 2 shows the chemical and physical properties
of DME and diesel. To ensure that the engine ran smoothly, the DME
fuel tank was equipped with a low-pressure fuel pump and a fuel
pressure regulator to the liquid DME supply line. To minimize the
effect of the surrounding temperature on the DME, a fuel temperature
control system was installed on the fuel feed and return lines. It
maintains an average temperature of 20 °C.