DETERMINATION OF HEAT SOAK CONDITIONS

摘要

A method and an arrangement for determining the presence of heat soak conditions in an internal combustion engine (1) of a type using fuel injection. Particularly useful when the or one of the fuels used in the engine (1) is susceptible to vaporisation in a fuel rail (8) due to high engine temperatures. The method includes the steps of measuring a first temperature in a tank (10) for the fuel, measuring a second temperature at the fuel rail (8), ascertaining the difference between the first and second temperature, wherein a significant difference indicates heat soak conditions. If heat soak conditions are detected then an auxiliary injector (20) may be operated or in dual fuel engines a higher boiling point fuel may be used.