Results 51 to 60 of about 3,879,883 (226)

Peripheral Anterior Chamber Depth and Angle Measurements Using Pentacam After Implantation of Toric and Non-toric Implantable Collamer Lenses

Frontiers in Medicine, 2021
Purpose: To evaluate the characteristics of peripheral anterior chamber measurements by Pentacam after posterior implantable collamer lenses (ICL) and toric ICL (TICL) with central hole (V4c) implantation.Methods: Prospective, non-randomized consecutive ...
Jiao Zhao, Jing Zhao, Jing Zhao, Jing Zhao, Wen Yang, Huamao Miao, Huamao Miao, Huamao Miao, Lingling Niu, Lingling Niu, Lingling Niu, Jianmin Shang, Jianmin Shang, Jianmin Shang, Xiaoying Wang, Xiaoying Wang, Xiaoying Wang, Xingtao Zhou, Xingtao Zhou, Xingtao Zhou   +19 more
doaj   +1 more source

Research on the Pressure Impact Characteristic of Continuous Rotary Electro-Hydraulic Servo Motor

IEEE Access, 2019
In order to reduce the pressure impact of continuous rotary electro-hydraulic servo motor, ensure the smooth pressure transition during the motor commutation, and improve the control accuracy, a kind of pre-compression chamber structure was proposed. The
Xiaojing Wang, Zhiqi Shen, Shuai Chen, Yuwei Sun   +3 more
doaj   +1 more source

Phenomenological model for unburned hydrocarbon emissions from spark-ignition, pre-chamber, and dual-fuel internal combustion engines

International Journal of Engine Research
Considering the strict regulations on the transport sector emissions, predictive models for engine emissions are essential tools to optimize high-efficient low-emission internal combustion engines (ICE) for vehicles.
E. Malfi, Stefania Esposito, Massimiliano De Felice, Heinz Pitsch, Stefan Pischinger, V. De Bellis   +5 more
semanticscholar   +1 more source

Experimental Study of Ignition Characteristics in Oblique-Injected Annular Combustors Using a Pre-Chamber Ignition System

Aerospace Research Communications
In this work, a pre-chamber ignition system is used to initiate the ignition in a premixed oblique-injected annular combustor. Although the introduction of the oblique-injecting burner in the gas turbine improved the gyratory flow motion and flow ...
Haroun Hassan, Haroun Hassan, Chenghao Qian, Hui Wang, Jinxiang Zhu, Haiwen Ge, Elsayed Barakat, Elsayed Barakat, Elsayed Barakat, Gaofeng Wang   +9 more
doaj   +1 more source

Coke-oven wastewater treatment in a dual-chamber microbial fuel cell with thiocyanate-degrading biofilm enriched at the air cathode

Water Science and Technology, 2022
Coke-oven wastewater is usually treated with the activated sludge process, which requires large amounts of electrical energy for aeration and sludge disposal. A more sustainable treatment is strongly required.
Kaho Yamada, Toshikazu Fukushima, Stefano Freguia   +2 more
doaj   +1 more source

The Influence of Pre-Chamber Parameters on the Performance of a Two-Stroke Marine Dual-Fuel Low-Speed Engine

Journal of Marine Science and Engineering
With increasing environmental pollution from ship exhaust emissions and increasingly stringent International Maritime Organization carbon regulations, there is a growing demand for cleaner and lower-carbon fuels and near-zero-emission marine engines ...
Hao Guo, Zhongcheng Wang, Song Zhou, Ming Zhang, Majed Shreka   +4 more
semanticscholar   +1 more source

Influences of the pre-chamber orifices on the combustion behavior in a constant volume chamber simulating pre-chamber type medium-speed gas engines

Combustion Engines, 2022
The study aims to clarify the influence of pre-chamber (PC) configurations on the combustion process in the main chamber (MC) of medium-speed spark-ignition gas engines equipped with an active PC. A constant volume combustion chamber was prepared to simulate the chamber configurations of the gas engines.
Takuya Wakasugi, Daisuke Tsuru, Hiroshi Tashima   +2 more
openaire   +1 more source

Numerical Study on the Design of a Passive Pre-Chamber for a Heavy-Duty Hydrogen Combustion Engine

SAE technical paper series
Lean-burn hydrogen internal combustion engines are a good option for future transportation solutions since they do not emit carbon-dioxide and unburned hydro-carbons, and the emissions of nitric-oxides (NOx) can be kept low.
Ralph Maas, Cemil Bekdemir, Bart Somers
semanticscholar   +1 more source

Lean Burn Gas Engine with a Pre Chamber Ignition System: Grid Independence Study and Design Optimization [PDF]

, 2020
Pre-chamber ignition systems are used in the lean burn gas engines to avail benefits of low emissions and high efficiency. Numerical investigations of these pre-chamber ignition systems are challenging due to the requirement of local refinement inside ...
Blesinger, Georg, Ghael, Kamlesh, Koch, Thomas, Rosenthal, Felix, Toedter, Olaf   +4 more
core   +2 more sources

Pre-chamber ignition system development for lean-burn Gasoline Direct Injection engine [PDF]

, 2020
Recent regulation changes to restricted fuel usage in motor-sport events resulted in motor-sport engine manufacturers focusing on improving thermal efficiency and often claim thermal efficiency figures well above equivalent road car engines. With limited
Palakunnummal, M., Palakunnummal, M.
core   +1 more source