Estimating the Effects of Altitude, Ambient Temperature and Turbocharger Match on Engine Performance

Abstract

The authors have outlined the simple theory of the exhaust gas driven turbocharger in association with the diesel engine. After a short statement of early empirically based assessments of the effect of altitude on supercharged engine output the theory is used to derive a method of calculation of engine performance, using a digital computer. A semi-empirical graphical method is then developed which may be used to assess the effect of turbocharger match, altitude, ambient temperature and fuel consumption on a known engine. Experimental evidence of the validity of the method is given.

A Framework to Assure the Trustworthiness of Physical Model-Based Digital Twins for Marine Engines

“…The sensitivity analysis results (derived trade-offs) are presented in Table 11, whereas the comparisons of the trade-offs with pertinent studies are presented in Table 12 for the ambient temperature variations and Table 13 for the anomalies, respectively. The ambient temperature trade-offs were compared with the trade-offs reported by Whitehouse et al [62], Serrano et al [63], MAN [64], whereas the anomaly condition trade-offs were compared to those reported by Kowalski [60]. From these tables, it is deduced that the predicted trade-offs are sound corresponding to the reported ones.…”

One-dimensional pulse-flow modeling of a twin-scroll turbine

“…In the early days, ICE simulation was conducted on mean-value basis where the whole engine flow system is treated to behave quasi-steadily [22].…”

The Application of Modern Control Theory to a Turbocharged Diesel Engine Powerplant

“…(13) and Winterbone et al (14) developed quasi-steady models for calculating the transient response of turbocharged diesel engines from one proposed by Whitehouse et al (15) for predicting the steady-state performance of engines at high altitudes. These models were based on the thermodynamic equations describing the combustion and turbomachinery processes: they had the advantage over block diagram models of being nonlinear.…”