Abstract The Piston is a crucial element of an I.C engine. reciprocating component the engine that converts thermal energy and pressure liberated by ignition air-fuel into mechanical work. design selection material challenging assignment for designer. This paper describes procedure piston four-stroke petrol optimization with different materials was carried out in present analysis done consideri...

A large number of non-stationary dynamic signals are generated in the working machinery and equipment. Especially, diesel engines often encounter non-stationary transient and time-varying modulation signals, such as the impulse response signals caused by cylinder piston wear. These kinds of signals generated from diesel engine are analyzed by the method of the Local Wave time-frequency proposed...

Based on the V-type diesel engine crankshaft system, the paper combined the finite element method (fem) and multi-body dynamics method together, made a virtual simulation analysis. First, by 3d software and finite element software to establish the multi-body dynamic models of the crankshaft, bearing and piston, then simulated the actual engine working condition, and got the data such as cranksh...

The hydraulic free-piston engine (HFPE) is a kind of hybrid-powered machine which combines the reciprocating piston-type internal combustion and plunger pump as whole. In recent years, HFPE has been investigated by number research groups worldwide due to its potential advantages high efficiency, energy savings, reduced emissions multi-fuel operation. Therefore, our study aimed assess operating ...

Free-piston engine linear generators (FPELGs) are an innovative power device that exhibits the distinctive dynamics of pistons and performance free-piston engines. Furthermore, single-cylinder/single-piston FPELG structure type has more advantages than other types, including a straightforward ease control. However, when coupled with various rebound devices, operational characteristics piston FP...

We describe the external and internal hydrogen interaction on contacting surfaces in “cylinder–piston rings” friction coupling. Under influence of high temperatures pressure, oil combustion chamber at a temperature up to 1473 K decomposes forms small amounts water. External (H2) is subsequently formed. Hydrogen removal from piston rings reduces heterogeneity structure, residual stresses, uneven...

a newly developed heavy duty diesel engine in dual fuel mode of operation has been studied in detail. the main fuel would be natural gas and diesel oil as pilot injection. the importance and effects of mixture preparation and formation through ports, valves and in cylinder flow field with different swirl ratio and tumble on diesel combustion phenomena is an accepted feature which has been studi...

One of the main sources of efficiency loss in heat engines is the inability of a sinusoidally displaced piston engines to approximate the ideal heat volumetric cycles the engines require. While attempts have been made to address this issue in the past, recent developments in Stirling engine technology utilizing rolling diaphragm seals on the cylinders has offered an opportunity to greatly incre...

Gas compression in a positive displacement (PD) type piston engine, or piston compressor, has long been modeled as a quasi-static process in which the piston is assumed to move infinitely slow inside a cylinder. The gas compression mechanism is therefore regarded as being governed by the basic thermodynamic principles. Energy transfer is accomplished quasi-statically with a piston reducing the ...

This study deals with the frictional power of each moving part in hydrogen fueled multi-cylinder spark ignition engine. The parts such as piston, rings, bearings, cam, and roller follower are considered for this study. engine was run at a constant speed 1500 rpm different loads. indicated is calculated using in-cylinder pressure data, brake measured respect to component calcu-lated models avail...