Results 91 to 100 of about 23,414 (253)

Investigation Of Low GWP Refrigerant Interaction With Various Lubricant Candidates

, 2012
Refrigerants used in various air conditioning and refrigeration industries are going through changes today and continued changes into the near future. These changes are being driven by environmental and energy efficiency regulations and could result in ...
Beattie, Roger J., Karnaz, Joseph A.
core   +1 more source

On the Friction and Wear Mechanisms of Electrified Steel Contacts in CO2: Unveiling the Role of Carbon‐Rich Tribofilms Under Dry Sliding Conditions

Advanced Materials Interfaces, EarlyView.
This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos, Seungjoo Lee, Cagatay Yelkarasi, Leonardo I. Farfan‐Cabrera, Ryuichi Okamoto, Hitoshi Washizu, Ali Erdemir   +6 more
wiley   +1 more source

Study of the Cylinder Deactivation on Tribological Parameters and Emissions in an Internal Combustion Engine

, 2022
In the present investigation, a study is carried out using numerical simulation on the effects of cylinder deactivation on tribological parameters and emissions in an internal combustion engine.
Sofia Orjuela Abril, Marlen Del Socorro Fonseca-Vigoya, Orjuela Abril, Martha Sofia, FONSECA VIGOYA, MARLEN DEL SOCORRO, Pardo García, Carlos Eduardo, Orjuela Abril, Sofía, Carlos Pardo García   +6 more
core   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

Advanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang, Liao Wu, Shuai He, Zhao Sha, Yuwan Huang, Shuying Wu, Dewei Chu, Chun H. Wang, Shuhua Peng   +8 more
wiley   +1 more source

Influence of Compression Rings on the Dynamic Characteristics and Sealing Capacity of the Combustion Chamber in Diesel Engines

, 2021
Internal combustion engines are widely implemented in several applications; however, they still face significant challenges due to the sealing capacity of the compression rings.
Marlen Del Socorro Fonseca-Vigoya, FONSECA VIGOYA, MARLEN DEL SOCORRO, Pabón León, Jhon, Daniel Maestre-Cambronel, Carlos Pardo-García, Brando Hernández-Comas, Pardo García, Carlos Eduardo, Jhon Pabón-León, Maestre Cambronel, Daniel Esteban, Hernández Comas, Brando   +9 more
core   +1 more source

Next‐Generation Water Treatment With Molybdenum Disulfide: Dual‐Functionality in Pollutant Adsorption and Photocatalysis

Advanced Materials Technologies, EarlyView.
ABSTRACT Molybdenum disulfide (MoS2) has attracted attention as a promising material due to the growing demand for environmentally friendly, cost‐effective, and efficient water treatment techniques. With its physicochemical characteristics, this stratified bidimensional material allows it to be highly effective in adsorption and catalytic performance ...
Pariksha Bishnoi, Gunjan Chauhan, Phil Hart, Samarjeet Singh Siwal, Vijay Kumar Thakur   +4 more
wiley   +1 more source

Development of chloride-free oil with sulfur-based EP additive for cold forming of stainless steel

Mechanical Engineering Journal, 2018
Galling and wear have been a tribology problem in sheet metal forming of stainless steel. Although lubrication oil with chlorinated extreme pressure (EP) additives have been used, environmental and safety issues have demanded not to use chlorinated EP ...
Tomohiro TAKAKI, Kazuhiko KITAMURA, Junichi SHIBATA   +2 more
doaj   +1 more source

ENVIRONMENTALLY TOLERABLE LUBRICANTS

, 2000
Sažetak Ekološki prihvatljiva maziva su ona, koja će u kontaktu s okolišem uzrokovati minimum štetnog djelovanja, i kod proizvodnje i primjene i kod zbrinjavanja otpada. Jedan od uvjeta ekološke prihvatljivosti je biološka razgradljivost maziva.
Milka Šateva, Šateva, Milka, Jasmina Vržina, Vržina, Jasmina, Vesna Schiesl, Schiesl, Vesna   +5 more
core   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Exhaust Emissions and Physicochemical Properties of n-Butanol/Diesel Blends with 2-Ethylhexyl Nitrate (EHN) or Hydrotreated Used Cooking Oil (HUCO) as Cetane Improvers

Energies, 2018
Currently, n-butanol is a promising oxygenate (potentially of renewable origin) to be used in blends with conventional diesel fuel in compression ignition engines.
Iraklis Zahos-Siagos, Vlasios Karathanassis, Dimitrios Karonis   +2 more
doaj   +1 more source