LOAD ANALYSIS OF PROPULSION ENGINE DURING SHIP’S SPEED ACCELERATION

Theory, Analysis , Design Methodology, Resistance and Propulsion of Ships

Examensarbete On Estimation of Momentary Average Engine Speed and Acceleration

The engine speed is one of the most important signals in the engine management system of a combustion engine. The signal is used to control the fuel injection, estimate the engine torque, and to generate reference values. Combustions in the cylinders result in the engine speed oscillating around a momentary average, and many applications are depending on stable estimates of this average engine ...

Estimation of Indicated– and Load– Torque from Engine Speed Variations

The importance of control systems and diagnostics in vehicles are increasing and has resulted in several newmethods to calculate better control signals. The performance can be increased by calculating these signals close to optimum, but that also require more and precise information regarding the system. One of the wanted control signals are the crankshaft torque and the thesis presents two dif...

Revolution Speed Limiter for Engine Subjected to Large Load Variation

Engine speed limiters are safety devices to prevent the engine to exceed a predetermined high speed. The presented speed limiter is designed for large load variations which requires accurate and fast Air-Fuel ratio control. It is based on feedback linearization and on-line estimation of the load torque. Experimentations was done with a Sea-Doo r © watercraft powered by a Rotax r © four-stroke e...

Speed perception during acceleration and deceleration.

We have recently shown that stimulus acceleration affects subsequent preferred speed and tuning widths of macaque area MT neurons (A. Schlack, B. Krekelberg, & T. D. Albright, 2007). Given the close link between area MT and speed perception, this predicts that speed perception should depend on the acceleration context. Here, we show that this is indeed the case for both speed discrimination and...