A model of a flat triple pendulum with obstacles imposed on its position is used for the modelling of a piston-connecting rod-crankshaft system of a mono-cylinder four-stroke combustion engine. The introduced selfexcited system can be only treated as the first step in more advanced modelling of real processes, but some examples of numerical simulations exhibit well known six stages of the pisto...

We report our results on non-periodic experimental time series of pressure in a spark ignition engine. The experiments were performed for a low rotational velocity of a crankshaft and a relatively large spark advance angle. We show that the combustion process has many chaotic features. Surprisingly, the reconstructed attractor has a characteristic butterfly shape similar to a chaotic attractor ...

Internal combustion engines with a crankshaft have been successfully developed for many years. They are lacking in the fact that piston trajectory, i.e., position as function of time, is limited by motion law. Position-controlled electric linear machines directly coupled to allow realize free-piston engines. Unlike crankshaft-based engines, they higher degree freedom shaping including adaptive ...

In conventional internal combustion (IC) engines, engine valve displacements are fixed relative to crankshaft position. If these valves are actuated as a variable function of crankshaft angle, significant improvements in fuel economy can be achieved. Existing electromagnetically actuated variable-valve-timing (VVT) systems characteristically use springs to provide the large inertial power to mo...

Diesel engines used in power plants and marine propulsion are especially sensitive to outage events. Any advance in the early detection of failure will increase the reliability of the electricity supply and improve its productivity by reducing costly power outages. Fault detection and diagnosis is important technology in condition-based maintenance for diesel engines. This article presents a cl...

In this study a coupled thermodynamics and crankshaft dynamics model of large two-stroke diesel engine was utilised, to map the relationship Instantaneous Crankshaft Torque (ICT) with following frequently occurring malfunctioning conditions: (a) change in Start Injection (SOI), (b) Rate Heat Release (RHR), (c) scavenge air pressure, (d) blowby. This performed using frequency analysis on ICT, wh...

The crankshaft is one of the main components that converts potential energy fuel into rotating power for piston engine. Because in process working changes piston's back and forth motion a shaft. To minimize effects damage occurs due to various types dynamic loads acting on components, design should first know stress distribution. Meanwhile, as tool analyzing it, Solidworks software used. From r...