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Anti-reflection coating (hereafter abbreviated as AR coating) on the surface of cover glass can offer a meter without the hood. ...In addition, the AR coating has a high reliability for the instrument panels of automobiles. The AR coating meter offers new instrument panel design for Toyota Prius. ...Thin films of AR coating are uniformly deposited on a large polymethylmethacrylate substrate in an ambient atmosphere by sol-gel dip coating and cured at low temperature.

A relation is observed between AC OFF stage odor evaluations made on air conditioning system equipped with evaporators treated with current hydrophilic coatings, new developed hydrophilic coating and hydrophobic polyurethane varnish and SEM analysis results obtained on the same surface coatings before and after ageing. ...The purpose of this document is to present the study devoted to odor level decrease in the frame of the development of coating for evaporators. Odor evaluation of evaporators at the different stages of climatisation running shows higher level at the AC OFF stage, which potential cause is localized on the surface coating of the evaporator. ...Odor evaluation of evaporators at the different stages of climatisation running shows higher level at the AC OFF stage, which potential cause is localized on the surface coating of the evaporator. Moreover, regulation restricts strongly hexavalent chromium use that enters in composition of chromate/phosphate chromate conversion chemicals.

This specification covers interior aircraft cabin coatings, which when tested under specified conditions exhibit low heat release and smoke release properties.

Direct Coating is a new processing technique which applies a single-layer polyurethane coating directly to a plastic part within a 2-shot molding cycle. ...A 2-shot molding prototype tool was made, and part molding trials were conducted using metallic pigmented polyurethane coating. Initial molding trials showed promising results of the coating quality and pigment dispersion. ...The advantages of Direct Coating over traditional paint are improved surface quality, scratch resistance, and cost-effective processing.

For short missions such as those typical for shuttle flights, microbial proliferation in the coatings has not been a major issue, despite the fact that the coatings are continuously moist and an ideal breeding ground for microbial species. ...A hydrophilic, antimicrobial coating has been developed for the condensing heat exchanger and filter assembly (CHFXA) for the Columbus Orbital Facility of the International Space Station. The coating is a single-phase, alumina-based, ceramic coating containing silver oxide as a biocide. ...To overcome this problem, slurping condensing heat exchangers have been developed that combine a hydrophilic coating on the air flow passages and an additional slurping section added to the air outlet of the heat exchanger to achieve efficient air-water separation.

Thermal barrier coatings (TBCs) were used to simulate adiabatic engines with the intention not only for reduced in-cylinder heat rejection and thermal fatigue protection of underlying metallic surfaces, but also for possible reduction of engine emissions. ...The insulation of the combustion chamber with this coating, which is ceramic based, influences the combustion process and hence the performance and exhaust emissions characteristics of the engines. ...A plasma sprayed thermal barrier coating was deposited on top of a piston for a Diesel engine and its effect on the engine performance is studied.

Cu, DLC, AlN, h-BN etc. are the candidate coatings for this kind of application. In this paper AlN coating has been developed and applied on 800 W OBC enclosure through Physical Vapor Deposition process. ...An ideal solution for this problem can be to deploy a conductive coating on the enclosure that are capable of spreading the heat evenly on the surface from the hotspots using in-plane thermal conduction.

Evaporators for automotive air-conditioning systems are being coated externally to improve corrosion resistance, water drainage, and reduce potential odor concerns. The coating durability and efficiency in achieving its corrosion resistance depends on the coating uniformity and adhesion characteristics. ...The coating durability and efficiency in achieving its corrosion resistance depends on the coating uniformity and adhesion characteristics. Good coating adhesion on aluminum surface can be achieved after freeing the surface from the oxide and flux residues. ...Evaporators manufactured by the Controlled Atmosphere Brazing (CAB) process have flux residue remaining on the surface, the presence of which interferes with the coating process and also affects the performance of coated components. A methodology to quantify the effect of high Nocolok flux residue on heat exchanger coating uniformity has been presented.

For short missions such as those typical for shuttle flights, microbial proliferation in the coatings has not been a major issue, despite the fact that the coatings are continuously moist and a breeding ground for microbes. ...Additionally, characterization of the coating physical properties has been performed. Results of the coating long-term evaluation are presented in this paper. ...A hydrophilic, antimicrobial coating has been developed for the condensing heat exchanger and filter assembly (CHXFA), part of the Environmental Control and Life Support System (ECLSS) of the Columbus Orbital Facility (COF), the European laboratory module of the International Space Station (ISS).

The approach consists in the definition of a thicker equivalent coating material that reproduces the thermal behavior of the real thin coating. The calculations are performed using a commercial 3D-CFD software for a Diesel engine considering two configurations: conventional metallic piston and coated piston top. ...The main idea when coating the combustion chamber with these materials is to obtain a reduction of the temperature difference (thermal swing) between gas and walls during the engine cycle and minimize heat losses. ...Nevertheless, the new generation of insulating coatings is posing challenges to numerical modelling, as layer thickness is very small (~100 μm).

Thermal Barrier Coating is an attractive and promising method in providing thermal insulation for the engine components due to its good thermo-mechanical properties. ...This research has been executed on three cylinder naturally aspirated diesel engine to understand the effect of the ceramic compound coating Yttria-Stabilized Zirconia, on engine performance and emission characteristics. This investigation compares the performance & emission characteristics of two different configurations namely, Engine Build I (Baseline Engine) and Engine Build II (Ceramic coated on cylinder head (incl. valves) of the Engine). ...Test results revels, that Ceramic coating on Cylinder head produce a reduction in fuel consumption, delivers higher performance and better emission characteristics.

The objective of this paper to understand how the silver ion coating on HVAC unit is contributing to improving cabin air quality. In addition, Consumers / Automobiles Manufacturers / OEM will be looking for Continuous Improvement in Air Quality through a solution which is Sustainable, Easy to Apply & Effective in increasing the Freshness & Hygiene of the Cabin Air.

This paper discusses the implementation of insulation or thermal barrier coating (TBC) as a means of reducing local oil viscosity and power cylinder friction in internal combustion engines with minimal side-effects of increased wear.

However, the ceramic structure of most phosphor coatings might introduce an error, due to its thermal insulation properties, when being exposed to rapidly changing temperatures.

This paper presents application and impact of thermal swing coating on thermal efficiency. Thermal swing coating material follows gas temperature quickly throughout the cycle which reduces the temperature difference between gas and coating surface and thus reduces the heat loss. ...A Sensitivity analysis was done to choose the best feasible thermal swing coating material and then thermal swing coating was applied on piston’s top surface and head. Initially analysis was done for single representative point (2000 RPM and 4 BMEP) with coating and without coating. ...Initially analysis was done for single representative point (2000 RPM and 4 BMEP) with coating and without coating. The study was extended for complete WLTP cycle and performance of uncoated and coated model were compared.

This paper aims to simulate how the piston top’s thermal barrier coating affects the engine’s thermal efficiency and emissions. Accordingly, a Thin-wall heat transfer model in AVL Fire software was employed. ...The effects of increasing the piston top surface temperature, comparing different thermal barrier coating material, were simulated at the engine’s rated power operating point, so as the piston top’s surface roughness. ...Comparing among the different coating materials, SiRPA (quartz reinforced porous anodic alumina), Zirconia (zirconium oxide), and YSZ (yttria-stabilized Zirconia), SiRPA was found to be the most effective one in term of thermal flux reduction, which could promote ITE by 0.8%.

This study looked into the application of active thermal coatings on the surfaces of the combustion chamber as a method of improving the thermal efficiency of internal combustion engines. ...The active thermal coating was applied to a production aluminium piston and its performance was compared against a reference aluminium piston on a single-cylinder diesel engine. ...A detailed energy balance approach was employed to study the thermal behaviour of the active thermal coating. In general, improvements in indicated specific fuel consumption were not statistically significant for the coated piston over the whole test matrix.

Thermal Barrier Coatings (TBCs) selectively manipulate the in-cylinder surface temperature, providing an avenue for improving thermal and combustion efficiency. ...This study follows prior work of authors with Yttria Stabilized Zirconia, which systematically engineered coatings for HCCI combustion. Herein, a modeling study was used to assess the impacts of various TBC material properties, e.g. density, thickness, and thermal conductivity on the temperature swing effect. ...A novel TBC formulation was developed, leverages a class of materials that, to the author’s best knowledge, have not been used as a thermal barrier coating previously. A systematic experimental investigation was carried out using single-cylinder research engine.

Heat transfer models have been developed for diesel engine performance with and without thermal insulation coating that is incorporated in the simulated program. A wall heat transfer model has been formulated and developed and coupled along with the above combustion and gas-wall heat transfer model to predict the effect of varying wall temperature on combustion, heat release, heat transfer and overall performance of a low heat rejection direct injection diesel engine.

Abstract The proven impact of combustion chamber deposits, CCD, on advanced compression ignition, ACI, combustion strategies has spurred researchers to develop thermal barrier coatings, TBC, which can mimic CCD benefits on combustion efficiency and operational range expansion.