The dynamic nonlinear models of engines which are studied in this paper are models of reciprocating engines which predict the time development of the time averaged mean values of the engine states rather than their instantaneous values. Such models can be made quite compact and relatively simple. Recent work indicates that they can also be made quite accurate. Thus they are attractive subjects for descriptive analysis using the theory of nonlinear differential equations and frequency analysis (of the linearized model). Such a study is carried out here for a mean value engine model of a large turbocharged two-stroke diesel engine.
