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This Paper presents comparative analysis of heat release in base line and insulated (Piston crown with plasma sprayed zirconia coating) diesel engine. The coating system affects the fuel consumption, the power and the combustion efficiency, pollution contents and the fatigue lifetime of engine components. ...Experimental research of insulated diesel engine incorporating thermal barrier coating (TBC) has produced controversial result. Some publications report that engine efficiency increases with insulation, while others argue that efficiency decreases. ...Several disadvantages such as producing nitrogen oxides also exist when a coating system is used. In this Paper, all effects, advantages and disadvantages of thermal barrier coatings are investigated based on experimental result.

By increasing coulomb efficiency, the quantity of hydrogen gas produced during electrodeposition was minimized, and as a result, gas pinholes remaining in the coating were reduced, increasing the smoothness of the coating beyond than that of the current materials. ...By increasing the percentage of highly dissociative strong acid components included in the neutralizing acid of the electrodeposition coating, it was possible to improve electrical conductivity and coulomb efficiency and achieve excellent throwing power.

The results indicate a more efficiency of organometallic coating when compared with tin coating, in all media. When the biofuel solutions are compared, it is observed that the soybean biodiesel is more corrosive than diesel.

In this context, the robustness of the piston ring running face, as characterized by wear resistance and scuff resistance in particular, plays an increasing role. As coatings are a crucial surface design element, they inevitably are a primary focus for addressing friction loss and increasing robustness in the piston ring/cylinder tribological system. ...This paper will outline the development of a new generation tetrahedral amorphous carbon (ta-C) piston ring coating called DuroGlide®, which is setting new standards in high-performance, low-friction piston ring technology. ...DuroGlide-coated piston rings demonstrate outstanding durability, friction, and scuff resistance compared to any ring coatings and contribute, in combination with advanced top and oil ring designs, fuel economy savings up to 1.2 percent for commercial vehicle engines.

The objective of this study is to investigate the performance, combustion and emission characteristics of Jatropha biodiesel and its blend fueled in standard CI engine (without coating piston crown) and thermal barrier coating (with coating of piston crown) CI engine at optimum injector opening pressure (IOP) and injection timing (IT). ...The working conditions for the standard and thermal barrier coating of piston crown CI engine were kept exactly the same to ensure a realistic comparison between the two configurations of the engine. ...The test results indicate that performance, combustion and emission characteristics of the B20 fueled with thermal barrier coating CI engine for all load range has improved. At full load at B20 fuel, emissions such as UBHC and smoke opacity were observed to be lower compared to the standard CI engine.

Environmental and health concerns have created the need for a replacement coating for cadmium and nickel-cadmium-diffused plating. Ion vapor deposition and other alternatives have been proposed, but do not provide all of the coating characteristics and properties obtained from nickel and nickel-cadmium-diffused coatings. ...Ion vapor deposition and other alternatives have been proposed, but do not provide all of the coating characteristics and properties obtained from nickel and nickel-cadmium-diffused coatings. ...Our company has instituted a search for replacement coatings. This paper documents the testing and investigation undertaken in the replacement coating program.

The results of this study demonstrate that the coating is a promising coating composition to consider for high-temperature aerospace and advanced heat engine applications. ...A new oxide aluminum-chromium carbide-based coating has been developed for practical application in automobiles. CrC layer has strengthened oxide aluminum layer by filing surface defects and pores. ...The excellent results in hydrogen make this coating of particular interest for use in automotive engines. Based upon observed tribological mechanics a model has been developed to describe thermo-mechanical behavior of oxide aluminum-chrome carbide composition under friction.

The uptake of the ethanol alcohol solution by the elastomer was found to be a function of the surface temperature and remained absorbed into the coating during the ice accretion process changing the characteristics of the coating in such a way that led to a reduction in the ice/surface bond strength.

A new oxide aluminum-chromium carbide-based coating has been developed for practical application in automobiles. CrC layer has strengthened oxide aluminum layer by filing surface defects and pores. ...The results of this study demonstrate that the composite is a promising coating composition to consider for high-temperature aerospace and advanced heat engine applications. ...The excellent results in hydrogen make this coating of particular interest for use in automotive engines. Based upon observed tribological mechanics a model has been developed to describe thermo-mechanical behavior of oxide aluminum-chrome carbide composition under friction.

Regarding exterior atmospheric corrosion protection, tin coatings are not sacrificial to exposed sheet steel, and therefore, tin coated sheet could be expected to provide exterior corrosion protection similar to terne coated sheet at similar coating weights. Tin coatings may require a primer coating for added exterior corrosion protection in fuel tank applications. ...However, in high-temperature testing in high methanol fuel blends, hot-dip tin sheet experienced some coating etching that was likely related to the added contaminants of formic acid and chlorides. ...Regarding exterior atmospheric corrosion protection, tin coatings are not sacrificial to exposed sheet steel, and therefore, tin coated sheet could be expected to provide exterior corrosion protection similar to terne coated sheet at similar coating weights.

Aluminum coatings by ion vapor deposition (IVD) represent the leading edge of finishing technology. IVD equipment has achieved the status of a proven production process offering both reliability and cost effectiveness. ...However, the IVD process and aluminum coating are extremely versatile, and the variety of applications has greatly expanded. Operating experience over the past decade has led to equipment and process refinements. ...In addition to the United States, coating facilities have been established in France, England, Canada, Japan and Australia. These facilities include independent job shops which offer contract coating service.

Mechanically plated finishes primarily used by the automotive industry have been specified for the following reasons: 1) Torque drive relationships. 2) Assured product reliability through elimination of hydrogen embrittlement. 3) Simplicity of coating application and waste treatment. 4) Corrosion protection. 5) Multiple coating applications. ...Fastener components and their protective coatings must also be compatible to the bimetallic surfaces with which they come in contact. Promising new mechanical plating developments are geared toward supplying finishes with characteristics necessary for bimetallic fastening while keeping cost factors in perspective.

Testing included: coating removal rates, sandwich corrosion, intergranular attack/end grain pitting and hydrogen embrittlement Stripping efficiency was evaluated on several different coating schemes: Epoxy Primer (MIL-P-23377TY1CL3) + Polyurethane Topcoat (MIL-C-83286), Epoxy Primer + Polysulfide (MIL-S-81733) + Polyurethane Topcoat, Epoxy Primer + Koroflex (TT-P-2760TY1CL2) + Polyurethane Topcoat. ...Testing included: coating removal rates, sandwich corrosion, intergranular attack/end grain pitting and hydrogen embrittlement Stripping efficiency was evaluated on several different coating schemes: Epoxy Primer (MIL-P-23377TY1CL3) + Polyurethane Topcoat (MIL-C-83286), Epoxy Primer + Polysulfide (MIL-S-81733) + Polyurethane Topcoat, Epoxy Primer + Koroflex (TT-P-2760TY1CL2) + Polyurethane Topcoat.

Application of a methanol-resistant polymer coating on a steel substrate was found to be a viable solution for methanol-resistant fuel tanks. ...It was found that the coating melted and resolidified in a continuous film adjacent to the welds. The resistance seam-welding operational envelopes were shifted toward lower welding travel speeds and welding currents.

It is based on CrN coating via PVD process, which provides improved wear resistance with enhanced toughness. This coating also presents reduced friction, that can represent up to 0.7% of reduction in fuel consumption, compared to gas nitrided steel on top ring which is the baseline technology used for spark ignited (SI) engines. ...This coating also presents reduced friction, that can represent up to 0.7% of reduction in fuel consumption, compared to gas nitrided steel on top ring which is the baseline technology used for spark ignited (SI) engines.

Coating black paint on the door sash of automobiles has been a separate process from the body coating. ...Recently, moany automotive manufacturers are switching this secondary coating process to adhesive tape technology for various advantages. These advantages include reduction of VOC (volatile organic carbon), rationalization of assembly process, cost reduction and so on.

As the upstream sensor, there is employed an element which obtains an additional catalyst coating layer to enhance combustion of CH4 and H2 that reaches to the surface of the element. Meanwhile, as the downstream sensor, there is employed an element having an electrode that is intentionally inactive with CH4, to eliminate the temperature dependent chemical reaction of CH4 remaining after the catalyst converter, and to avoid false catalyst monitoring.

In the third phase of the work, the test engine was modified to operate in the LHR mode so the engine components such as cylinder head, valves, and piston crown were initially machined to 300 microns for the required coating thickness to maintain the compression ratio and then the components were firstly coated with 100 microns bond- coat of Nickel, Chromium, and aluminum alloys (NiCrAl) and on the top of it 200 microns of lower thermal conductivity ceramic material Yttrium Stabilized Zirconia (8%YSZ) coated with help of plasma spray coating techniques. ...In the third phase of the work, the test engine was modified to operate in the LHR mode so the engine components such as cylinder head, valves, and piston crown were initially machined to 300 microns for the required coating thickness to maintain the compression ratio and then the components were firstly coated with 100 microns bond- coat of Nickel, Chromium, and aluminum alloys (NiCrAl) and on the top of it 200 microns of lower thermal conductivity ceramic material Yttrium Stabilized Zirconia (8%YSZ) coated with help of plasma spray coating techniques. Then the LHR engine was fuelled with WCOME and tested for its characteristics in the fourth phase. ...This improvement could be due to the combination of thermal barrier coating and the presence of iron oxide nanoparticles which ensures complete combustion of injected WCOMEN.

Delete AS7108, clarify thickness requirements for coating of threads, clarify tape test requirements, update references, and general revision.

This specification covers the engineering requirements for producing a thin tin coating on aluminum alloys by an immersion process.