Results 11 to 20 of about 3,898,800 (181)

Evolution of lubricant degradation and lubricant behaviour in a piston assembly of a reciprocating gasoline engine [PDF]

open access: yes, 2013
The most difficult and challenging area for the tribology of reciprocating internal combustion engines to improve efficiency and life is the lubricant health within the piston ring pack.
Notay, Rai Bahadur Raman Singh
core   +6 more sources

In-cylinder fuel and lubricant effects on gasoline engine friction [PDF]

open access: yes, 2007
The purpose of the research reported in this thesis was to investigate the viability and quantify the potential gains of improving fuel economy of the gasoline engine through strategic application of additives.
Smith, Oiver Mark Edward
core   +6 more sources

Effects of Injector Spray Angle on Performance of an Opposed-Piston Free-Piston Engine

open access: yesEnergies, 2020
A free-piston engine is a novel internal combustion engine which has the advantages of a variable compression ratio and multi-fuel adaptability. This paper focuses on numerical simulation for combustion process and spray angle optimization of an opposed ...
Qinglin Zhang   +3 more
doaj   +1 more source

Free-piston diesel engine dynamics and control [PDF]

open access: yesProceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001
Free-piston diesel engines are characterized by freely moving pistons without any rigid crankshaft or camshaft connected to the pistons. This allows a highly compact and efficient engine design, but requires automatic control of the piston motion. This paper present a dynamic mathematical model of a free-piston diesel engine, a control oriented dynamic
Tor Arne Johansen   +3 more
openaire   +1 more source

Investigation of a piston mass impact on the pulse tube engine performance using analytical and experimental methods

open access: yesCase Studies in Thermal Engineering, 2020
In this research we have formulated a model using the mechanical-acoustical method and we have constructed an experimental apparatus to investigate the performance of the free piston pulse tube engine.
Alexander I. Dovgyallo   +2 more
doaj   +1 more source

Bore polishing of diesel engine cylinder liners [PDF]

open access: yes, 1987
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.There are two important omissions in the literature on bore polishing, firstly there is no evidence of the successful development of a reliable tribo test ...
Al-Khalidi, Ghazi
core   +7 more sources

Numerical Investigation of a Free-Piston Hydrogen-Gasoline Engine Linear Generator

open access: yesEnergies, 2020
The free-piston engine linear generator (FPELG) is being investigated by many researchers because of its high thermal efficiency and its variable compression ratio. However, all researchers focused on the FPELG characteristics with mono-fuel.
Ziwei Zhang, Huihua Feng, Zhengxing Zuo
doaj   +1 more source

An investigation of a hypocycloid mechanism based twin-rotor piston engine [PDF]

open access: yes, 2014
A unique mechanism is investigated in this paper to show the working principles of a novel hypocycloid twin-rotor piston engine (HTRPE), which provides the basis for the structural design, kinematic and dynamical analysis necessary to realize the engine.
Gu, Fengshou   +8 more
core   +1 more source

Study on Leakage Effect Factors of Two-Stroke Micro Free Piston Swing Engine

open access: yesMicromachines, 2022
The two-stroke micro free piston swing engine (MFPSE) is a portable power device. Its seal performance plays an important role in the dynamic properties and efficiency of microengines.
Shujing Miao   +5 more
doaj   +1 more source

Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings

open access: yesTribology Online, 2017
The first piston ring application of a hydrogen-free diamond-like carbon (H-free DLC) coating to a mass-production gasoline engine reduces friction. It is found that the friction reduction effect between the cylinder bore and piston is 18%.
Tsuyoshi Higuchi   +4 more
doaj   +1 more source

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