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Honda R&D Technical Review October 2021

Honda R&D Technical Review is a periodical containing research papers related to Honda R&D Center activities worldwide that cover automobiles, motorcycles, power products, aircraft engines, and other fundamental technologies. Honda Motor offers a book for the October 2021 issue with 77 pages containing 7 papers focusing on the following latest topics: Simultaneous Reduction of NOx and Smoke by Divided Diffusion Combustion Using High Dispersion Staggered Layout Nozzle Reproduction of Engine Torque Fluctuation with Low Inertia and High Stiffness Dynamometer Comprehensive Study of Solvents for Wet Process Applied to Sulfide-based All Solid State Battery

Automotive Engineering International 2006-10-01

Like a rolling home Suppliers are helping automakers engineer vehicles that allow passengers to bring along the comforts of home. Focusing on distraction An explosion of new features, functions poses challenges for safety. Performance goes green With record-high fuel prices and CO2 concerns providing the impetus, automakers are developing more fun-to-drive cars with an eye towards efficiency. GM re-engineers pickips More refined ride, higher-quality interiors, and greater efficiency are some of the highlights of the 2007 models. Jeep takes on tough terrain For 2007, the brand's iconic Wrangler is engineered to be more rugged off-road and more refined on it. Audi updates TT theme The second-generation rendition is bigger, more powerful, and uses a subtle metals mix and match. Vantage: as Aston to the core A common platform strategy is a vital element of the company's design and manufacturing flexibility.

Honda R&D Technical Review: April 2013

Honda's April 2013 R&D Technical Review features cutting-edge developments from Honda's worldwide R&D teams. This edition brings 15 original papers on the introduction of new technologies, and includes 11 additional of the company's best technical papers published since October 2012. They cover advancements in the following areas: • Low-engine-speed self- ignition, • Improvements of durability for lean, • NOx reduction behavior on Iron Ion-exchanged Zeolite Catalyst for ULEV 50 • Projected texture stereo vision in sunlight • Development of Battery System for EV • Development of Battery Traceability System for EV • Introduction of Solar Hydrogen Station Installed in Japan • Development of Electric Servo Brake System

Automotive Engineering International 2009-03-01

Lighten up! Automakers and suppliers accelerate their efforts to reduce vehicle weight by engineering them for greater use of lighter, stronger materials. Combustion research heats up As calls for lower CO2 emissions grow louder, fuel system, valvetrain, electronic control, and analytical technologies are helping to unlock greater efficiences inside the cylinder. Touching the future Sensors and screens are replacing push buttons as touch controls get more sophisticated and user-friendly. Waving the 'green' flag SAE 2009 World Congress host company Honda calls for collaboration and urgency in the race for green mobility.

High-Temperature Corrosion and Materials Application

As we strive for energy efficiency, the realm of high-temperature environments is expanding and the need for information on high temperature materials applications was never greater. This electronic publication addresses concerns, technologies, and materials available for those engaged in high-temperature applications. Topics include erosion and erosion-corrosion, low NOx combustion in coal-fired boilers, fluidized bed combustion, and the special demands of waste-to-energy boilers, waste incinerators, and black liquor recovery boilers in the pulp and paper industry. The corrosion induced by liquid metals is discussed and protection options are presented. Hydrogen damage is characterized and solutions given.

Automotive Engineering International 2006-08-01

Seats of power Car users are sitting on more advanced features than ever before, but increasing demands for "comfort" and other considerations have focused industry brainpower on slimmer seat designs, new trim materials, and innovative technology solutions. Big changes for powertrain control Electronics innovations are behind many of the advances in hybrid, diesel, and conventional gasoline engines. Plastic on the outside For many new vehicles, light weight is paramount, and so too is eye-catching design. That's why plastic body panels will become more prevalent. Toyota powers ahead The company's powertrain strategy follows Toyota President Watanabe's dream that a Toyota car be able to cross the American continent with no refueling while cleansing the atmosphere as it travels. The Honda way In the pipeline are a "dedicated hybrid car for family use," a super-clean diesel that meets U.S.

Automotive Engineering International 2008-06-01

Finding the right niche As technology, politics, and OEMs struggle to achieve environmental cohesion, small and niche companies are determined to ride out the maelstrom with their ability to adapt, react, succeed, and survive. Jaguar and Land Rover shift Access to technology and engineering takes center stage as the two brands transition from one giant parent to another as Tata takes over from Ford. Aston Martin bonds The company is developing closer ties with Tier 1 suppliers in its new role as an independent. Bentley has secret CO2 plans The company wants to combine luxury and high-performance hallmarks with massive cuts in emissions. Lotus small and manueverable The engineering arm's technology menu--including lightweight, small engines, and high performance--is being sampled across the world. Porsche looks to the future Gasoline hybrid technology, convergence potential, and diesels could be in store for the company.

Automotive Engineering International 2005-06-01

Technology development under pressure Achieving major cuts in CO2 emissions and fuel consumption continue to be the big challenges facing the European automotive industry. But are the targets realistic, can emerging technology deliver solutions, is driveability likely to suffer, and will the end-user face higher costs? Pulling power The European industry is creating more (or at least as much) with less for the latest-generation powertrains. Chassis evolution Is it time for suspension system designs--increasingly costly to develop--to be standardized to conform to the ride and handling requirements of particular types and segments of cars instead of constantly being re-invented? The mere idea is anathema to some, but tempting common sense to others. Creature comforts Priorities for interior design are many and include increased safety, reduced noise, greater comfort, less complex ergonomics, and more systems support for the driver.

Automotive Engineering International 2004-06-01

Ministering to the interior The design of passenger car interiors has been changing steadily as safety and comfort systems have been added. The "Playstation" generation is likely to bring an increasing influence on ergonomic and aesthetic design, allied to a reduction in driver workload and a further enhancement in safety systems' capability and flexibility. Highlights from New York The 2004 New York International Auto Show saw the most world debuts in the event's history, with strong themes in new midsize luxury cars and midsize SUVs. Divergent stands on safety The battle between consumer advocacy groups and automakers over safety heats up as Congress contemplates mandates. Sport compacts go drag racing Makers of entry-level front-wheel-drive cars hope to translate power under the hood into power in the showroom.


Spotlight on Matt Roney Tony Lewin talks with TRW's Matt Roney about the megatrends now shaping future vehicle technology-and the emphasis is on delivering maximum value. The new black Imagine a future where cars weigh half what they do today, emit less carbon dioxide and are much easier to recycle. That vision may well be on its way, as Ian Adcock, Paul Horrell and Lou Reade report. Safety first Volvo's electric-powered C30 presented its engineers with a unique set of safety challenges, not least integrating a 300Kgs battery pack.

Automotive Engineering International 2006-09-01

Systems drive safety Engineers are using a holistic approach to design safer vehicles by adding function and integrating multiple subsystems. The gas in greener Biodiesels promise to help reduce petroleum consumption and CO2 emissions, but much of the potential depends on production and infrastructure investment. Good vibrations Instead of excising all noise, vibration, and harshness, engineers are focusing more on making specific sounds and feedback "fit" a vehicle. SAE Commercial Vehicle Congress Preview International Truck and Engine executives head the charge for "positive industry change" at SAE's third Congress for the on- and off-highway communities.

Automotive Engineering International 2001-12-01

Concepts from Tokyo The Japanese brands showed an impressive number of concept vehicles at the 2001 Tokyo Motor Show, from styling exercises in search of what will come next, to "reference models" that are very close to production. Formula One technology: 2001 Engineering highlights of the recently completed season were the return of traction control, the widespread use of launch control, and the move toward wide V-angle engines. Adaptive front lighting Though there have been several early attempts at giving lighting systems some mechanical "intelligence," Hella believes the time is drawing near for the burgeoning capability of processors and sensors to play a significant role in enhanced frontal illumination. Instrument-cluster design trends Optrex America engineers show how automotive interior designers can use light to their advantage in designing displays for dashboard clusters.

Automotive Engineering International 2006-12-01

2006 Technology in review AEI editors look back at some of the most significant engineering and innovation stories of the past year. A new focus on emissions Cleaning up cold starts, adding precision are some of the strategies being employed by powertrain and controls engineers to further cut exhaust pollutants. Letting the sun shine in Increased modularity and reduced mass and complexity are the focus of covertible-top system engineers. Air conditioning and global warming Europe's legislated phaseout of R-134a, remaining issues with CO2 systems, and new proposals for R134-a replacements give engineers many challenges, hard choices to make, and not much time.
Technical Paper

Impact of PME Over Crystals Formation and Rig Test Performances Degradation

The use of biodiesel has risen worldwide in the last decade. Different countries use different biodiesel feedstocks which will depend on the resources available locally. Some problems due to biodiesel content and feedstock quality have been pointed out in the literature, which include cold flow properties issues of several methyl esters, especially Palm Methyl Ester (PME). The present work was carried out on diesel-biodiesel blends from 0 to 30%v/vPME in order to evaluate the impact of crystals formation on fuel filter plugging using a rig test. The fuel was maintained at 5°C and 20°C during soaking. The crystal particles formation was evaluated by the Turbiscan™ technique (based on multiple light scattering with near infra-red light), followed by particles mass weight determination by filtration. The fuel was then evaluated in the test rig until performances degradation in terms of fuel flow rate and filter pressure drop.
Technical Paper

Improved Thermal Efficiency using Hydrous Ethanol Reforming in Advanced Spark-Ignition Engines

Bio-ethanol can be produced from several type of biomass, and the CO2 emission of bio-ethanol is low compared with gasoline. Bio-ethanol is a high octane fuel, therefore, it has characteristics that allow it to burn at a high compression ratio condition. However, bio-ethanol is usually refined to be high purity ethanol (>99.5%). It requires much energy to refine; thus large-scale refinery plants are needed, increasing the cost of refining bio-ethanol. High purity ethanol (>99.5%) can be refined after fermentation and a distillation. If hydrous ethanol can be used as a fuel for engines, the distillation process can be simplified. As a result, the costs of refinement can be reduced. An innovated engine can be developed by using hydrous ethanol as the fuel because three highly efficient methods can be combined. First, exhaust heat can be recovered by the steam reforming of hydrous ethanol. Second, the reformed gas, which contains hydrogen, can be combusted under dilute conditions.
Technical Paper

Performance Evaluation and Emission Characteristics of Biodiesel-Alcohol-Diesel Blends Fuelled in VCR Engine

The diesel engine has for many decades now assumed a leading role in both the medium and medium-large transport sector due to their high efficiency and ability to produce high torque at low RPM. Furthermore, energy diversification and petroleum independence are also required by each country. In response to this, biodiesel is being considered as a promising solution due to its high calorific value and lubricity conventional petroleum diesel. However, commercial use of biodiesel has been limited because of some drawbacks including corrosivity, instability of fuel properties, higher viscosity, etc. Biodiesel are known for lower CO, HC and PM emissions. But, on the flip side they produce higher NOx emissions. The addition of alcohol to biodiesel diesel blend can help in reducing high NOx produced by the biodiesel while improving some physical fuel properties.
Technical Paper

Review and Validation of Models of Pressure Drop Across Diesel Particulate Filter and Particulate Loading Quantity

Diesel particulate filters (DPF) regeneration is required to remove accumulated particulate matter in DPF. High pressure drop across DPF triggers an active regeneration by the ECU to burn off the accumulated soot. In city driving such as in a small island as Malta, exhaust gas temperatures are not high enough for passive regenerations, and ECU active regeneration might fail due to short trips. The particulate loading quantity in DPF is beneficial information as it provides an estimate of the remaining mileage expectancy of the DPF. Many vehicles provide information on particulate filter loading quantity in the OBD data. However, since this parameter is not on the mandatory list, different manufacturers provide this loading parameter in different forms, e.g.: grams; percentage (%); remaining mileage; etc. Thus comparison of the loading quantity across different manufacturers is not straightforward.
Technical Paper

A Quasi Two Dimensional Model of Transport Phenomena in Diesel Particulate Filters - The Effects of Particle Diameter on the Pressure Drop in DPF Regeneration Mode-

Experimental and numerical studies on the combustion of the particulate matter in the diesel particulate filter with the particulate matter loaded under different particulate matter loading condition were carried out. It was observed that the pressure losses through diesel particulate filter loaded with particulate matter having different mean aggregate particle diameters during both particulate matter loading and combustion periods. Diesel particulate filter regeneration mode was controlled with introducing a hot gas created in Diesel Oxidation Catalyst that oxidized hydrocarbon injected by a fuel injector placed on an exhaust gas pipe. The combustion amount was calculated with using a total diesel particulate filter weight measured by the weight meter both before and after the particulate matter regeneration event.
Journal Article

Modeling of a DOC SCR-F SCR Exhaust Line for Design Optimization Taking Into Account Performance Degradation Due to Hydrothermal Aging

With the upcoming Euro 6c emission regulations, the performance of Diesel exhaust lines needs to be improved to meet NOX and soot emission targets. A promising exhaust line architecture to reach these requirements is the association of a Diesel Oxidation Catalyst (DOC), a Selective Catalytic Reduction coated on a particulate filter (SCR-F) and a Selective Catalytic Reduction (SCR) catalyst. To develop this system, the car manufacturers have to face several challenges. One of the first is the design of the exhaust line volumes, which has a strong impact on the light-off temperatures of the catalysts and so on system performance. Then, urea injection has to be optimized with an adapted control system to maximize NOx reduction while keeping low tailpipe ammonia emission. Moreover, performance degradation of catalysts due to harsh exhaust conditions during vehicle life time have to be detected by OBD system.
Technical Paper

The Impact of Injector Deposits on Spray and Particulate Emission of Advanced Gasoline Direct Injection Vehicle

Gasoline Direct Injection (GDI) engines have developed rapidly in recent years driven by fuel efficiency and consumption requirements, but face challenges such as injector deposits and particulate emissions compared to Port Fuel Injection (PFI) engines. While the mechanisms of GDI injector deposits formation and that of particulate emissions have been respectively revealed well, the impact of GDI injector deposits and their relation to particulate emissions have not yet been understood very well through systematic approach to investigate vehicle emissions together with injector spray analysis. In this paper, an experimental study was conducted on a GDI vehicle produced by a Chinese Original Equipment Manufacturer (OEM) and an optical spray test bench to determine the impact of injector deposits on spray and particulate emissions.