Results 81 to 90 of about 709 (208)

The Influence of Helium Addition on the Combustion Process in a Hydrogen-Fueled Turbulent Jet Ignition Engine

Applied Sciences
There are considerably fewer requirements for the quality of hydrogen combusted in an engine than its quality for fuel cells. Therefore, the analysis was carried out on the combustion of hydrogen–helium mixtures in an engine with a two-stage combustion ...
Dawid Mielcarzewicz, Ireneusz Pielecha
doaj   +1 more source

Flow characteristics of a motored spark ignition engine with a prechamber.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1989
To understand the effect of a torch jet on the flow characteristics in a prechamber spark ignition engine, a laser Doppler anemometer (LDA) is used to measure the velocity in a main chamber under the motored condition. The engine is operated at a constant speed of 1000 rpm with a wide open throttle (WOT).
Namekawa, Shoji, Ryu, Hano, Iijima, Toshio, Asanuma, Tsuyoshi   +3 more
openaire   +2 more sources

Numerical simulations of a prechamber autoignition cogeneration engine operating on natural gas [PDF]

, 2009
A numerical simulation of a prechamber autoignition gas engine has been performed based on an experimental test case. With a simplified finite-rate/eddy-dissipation model for the combustion of natural gas, it was possible to properly reproduce the ...
Heyne, Stefan, Favrat, Daniel, Favrat, D., Favrat, D, Millot, G, Heyne, S, Millot, Gregory   +6 more
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Experimental study on the effect of pre-chamber structural parameters on combustion and emissions characteristics of ethanol pre-chamber engine

Case Studies in Thermal Engineering
To achieve low-carbon and sustainable development in the automotive industry, ethanol pre-chamber engines offer significant technical potential. The structural parameters of the pre-chamber significantly influence the formation of the pre-chamber spray ...
Kaichang Lai, Fangxi Xie, Hong Chen, Jiakun Du, Xiaoxiao Jiang, Jingxun Yang   +5 more
doaj   +1 more source

Fuel System for a Gas Engine with a Scavenged Prechamber [PDF]

, 2021
V první části práce pojednává o konstrukčním řešení palivové tratě pro přívod paliva do aktivně vyplachované předkomůrky a sacího potrubí zkušebního jednoválce. V textu je uvedeno a porovnáno několik variant.
Štěpán Kyjovský
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Controllability of Pre-Chamber Induced Homogeneous Charge Compression Ignition and Performance Comparison with Pre-Chamber Spark Ignition and Homogeneous Charge Compression Ignition

Applied Sciences
This paper presents an experimental and numerical evaluation of the pre-chamber induced HCCI combustion concept (PC-HCCI) in terms of engine performance, emissions, and controllability.
Josip Krajnović, Sara Ugrinić, Viktor Dilber, Darko Kozarac   +3 more
doaj   +1 more source

Combustion analysis in a natural gas engine with pre-chamber by three-dimensional numerical simulation

Nihon Kikai Gakkai ronbunshu, 2015
Highly efficient natural gas engines have been widely used in wide range of sectors from industry and transportation. However, because combustion process in gas engines with a pre-chamber is very complicated, it is difficult to experimentally investigate
Satoshi HOKIMOTO, Tatsuya KUBOYAMA, Yasuo MORIYOSHI, Toshio YAMADA   +3 more
doaj   +1 more source

Utilization of a Telemetric Prechamber in the Management of Patients with Normal Pressure Hydrocephalus

World Neurosurgery
Normal pressure hydrocephalus is a preventable and treatable cause of dementia. A telemetric prechamber allows individually tailored ventriculoperitoneal shunt valve adjustments in patients treated with the shunting procedure.In this pilot, prospective randomized trial, 33 adult patients were divided into Group A (with an implanted telemetric ...
Miroslav Cihlo, Pavel Trávníček, Svatopluk Řehák, Lucie Kukrálová, Karel Zadrobílek, Jan Pospíšil, Pavel Dostál, Vlasta Dostálová   +7 more
openaire   +2 more sources

Starting flow in an impulse wind tunnel with a throttled prechamber

Journal of Physics: Conference Series, 2019
Abstract The unsteady axisymmetric flow forming in the process of starting an impulse wind tunnel equipped with a throttled prechamber was numerically simulated. A regime with the operating flow Mach number M = 8 was under consideration. Numerical simulation on the basis of Reynolds-averaged Navier–Stokes code and the k-ω SST turbulence ...
Yu P Gounko, I N Kavun
openaire   +1 more source

Design and simulation of prechamber with high pressure CNG injector system for single cylinder four stroke engine [PDF]

, 2012
This thesis presents an ignition system to improve engines efficiency. The method used in this study is by using a prechamber as a pre-ignition system for the engine, where the prechamber is located at the top of cylinder head.
Mohd Fadzli, Mat Lazim
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