Engine plant comprising a plurality of turbo-charged combustion engines

Abstract

The engine plant comprises a plurality of turbocharged combustion engines (1, 2), the charging air systems of which are interconnected by means of a closeable conduit (14). Conduit (14) is adapted to supply supplementary charging air from the charging air system of a loaded engine (1) to the charging air system of an unloaded engine (2). A stop valve (15) is provided in the conduit and is controlled in dependence on the working condition of the associated engine (2) on the basis of a comparison between the charging air pressure and the exhaust gas pressure. Said comparison of pressures is effected by means of a surveillance unit (18) accommodating a duct system with two separate branches connected with the charging air system and the exhaust gas system, respectively. The branches are connected with a common outlet and a thermosensor is provided in either branch. By suitable dimensioning of the surveillance unit (18) it is obtained that said two thermosensors--dependent on the prevailing pressures--are either surrounded by two different gas flows or surrounded by the same gas flow. This provides for obtaining that a traditional measuring of pressures with the particular problems involved in this respect is avoided since the aim is now merely to detect a temperature difference which may be effected irrespective of the actual pressure conditions.