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Viewing 211 to 240 of 170105
Event
2014-12-10
The automotive industry is facing a combination of challenges over the next decade. Fuel economy regulations are increasing for light-duty vehicles, and U.S. EPA Tier 3 emissions standards are requiring lower tailpipe emissions. Advanced combustion techniques are being pursued to enable improved fuel economy, and lower NOx and PM emissions can be obtained by the more homogeneous combustion from these techniques. However, CO and HC emissions are often higher from advanced combustion engines, and the higher efficiency of these engines results in lower exhaust temperatures. The combination of higher CO and HC emissions with lower exhaust temperatures challenges conventional oxidation catalysts. Thus, new catalyst technologies are being pursued to lower light-off temperatures to enable emissions compliance. Research on novel catalyst formulations for control of CO and HC emissions will be presented.
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2014-12-10
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2014-12-10
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2014-12-10
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2014-12-10
Accelerated aging of automotive gasoline emissions catalysts has been performed on bench engines for decades. The EPA regulations include an accelerated aging cycle called the Standard Bench Cycle (SBC) that is modeled on the RAT-A cycle developed by GM Corp. and published in 1988. However, this cycle cannot be used for diesel aftertreatment components because it is based on stoichiometric operation, whereas diesel engines typically operate under excess air (lean) conditions. The necessity for accelerated aging cycles for diesel emissions systems can be illustrated by considering that the full useful life requirement in the United States for heavy-duty on-highway trucks is 435,000 miles, and off-road applications may be 8,000 hours. Aging under normal operating conditions is excessively time-consuming and expensive. This need was recognized, and the DAAAC Protocol™ developed to provide accelerated aging cycles for the vast majority of diesel emissions system applications. Although the DAAAC Protocol™ was developed for heavy-duty applications, there are no reasons not to utilize it for light-duty applications as well.
Event
2014-12-10
Spark-plug sized particle sensors are developing rapidly due to onboard diagnostics (OBD) regulations demand in the US and Europe and eventually worldwide. Particle sensors will be one of the key enablers for exhaust particle filters to continue their success in keeping particle emissions below or equal to the regulatory limits not only in brand new vehicles, but also in vehicle lifetime. Beyond OBD, particle sensors have numerous applications in engine research and development, retrofit technologies, environmental research and modeling, and instrumentations. Before spreading the use of particle sensors in the market place, it is critical that their performance and durability are well understood. The performance of particle sensors is critical as we need to understand what property of particulate matter (PM) do they measure (mass, number, surface area, size, etc…), the fundamentals of such measurement and the dependent variables, and how it relates to our current measurement method of PM.
Event
2014-12-10
Upcoming tighter LEVIII emission regulations, especially SULEV-20 and SULEV-30 standards, are placing a greater burden on OEM’s to reduce PGM consumption since 84% of passenger cars must comply with LEVIII by 2022. Over the last few years, BASF has developed an innovated approach for multi-catalyst systems to allow OEMs to successfully meet their goals. The material discusses this approach. Beginning with an analysis of the vehicle’s ECU properties followed by an analysis of ECU-catalyst and front and rear catalysts synergies, as well as PGM loading and cell density effects. Once best performing catalyst technologies are identified, a PGM optimization is conducted to provide the most cost effective catalyst system to OEMs. Past programs have resulted in a 20-40% PGM reduction.
Event
2014-12-10
Temperature and gas and surface concentration gradients exist in catalytic reactors, yet often the composition of the catalyst in the reactor is itself homogeneous. Taking advantage of the existing and evolving reaction gradients, by using tailored gradients in active site distributions, can be used to improve catalyst performance and durability. For example, previous research has shown that “front-loading” catalysts can reduce the light off temperature for CO oxidation. In this study, a combination of experimental and modeling results will be presented that indeed demonstrate that there are benefits to designing oxidation catalysts with a non-uniform distribution in active sites, and these benefits become more significant the more the catalyst is “challenged”. Such results could prove particularly important for future low-temperature combustion technologies, which appear to not only result in lower temperature exhaust, but the exhaust also contains higher levels of CO and hydrocarbons.
Event
2014-12-10
This session will provide insight into the major design characteristics and performance of electric drivetrains for passenger vehicles.
Event
2014-12-10
Optimizing the performance of the electric drivetrain requires the latest motor control algorithms and system modeling
Training / Education
2014-12-10
In the fast paced and competitive environment of today's global economy, the work of technical professionals is often the difference between success and failure in an organization. Providing leadership for engineers is uniquely challenging, and the transition from working engineer to first-line technical supervisor is one of the most difficult career challenges that an engineer may face. First-time engineering supervisors and mid-level managers who wish to sharpen their skills and learn new techniques for guiding, coaching, and motivating working engineers, technicians, and designers will find this seminar valuable.
Training / Education
2014-12-10
ISO 26262: Road Vehicle - Functional Safety is now becoming a condition of compliance for doing business in the automotive sector. The Scope states: “ISO 26262 is intended to be applied to safety-related systems that include one or more electrical and/or electronic (E/E) systems and that are installed in series production passenger cars with a maximum gross vehicle mass up to 3,500 kg…" This course provides background for reading and applying the standard and explains its scope, the major differences from the general safety standard IEC 61508, and how the scope changes with the introduction of new systems.
Training / Education
2014-12-10
The certification of transport category cabin interiors requires a thorough understanding of Part 25 Transport Category aircraft cabin interior safety and crashworthiness regulations and compliance requirements. Regardless of whether it is a simple modification, a specialized completion (VIP or VVIP) or airline passenger configuration, engineers, designers, and airworthiness personnel must understand and adhere to these requirements. This two day seminar will begin with a discussion of Commercial off the Shelf (COTS) test requirements. The instructor will then guide participants through the various cabin interior emergency provisions and their requirements such as supplemental passenger oxygen, emergency equipment, seats, flammability, emergency exits, emergency lighting and escape path markings, and various other cabin interior systems.
Training / Education
2014-12-10
Increased public pressure to improve commercial truck safety and new stopping distance regulations have intensified the need to better understand the factors influencing heavy vehicle braking performance. To assist individuals and their organizations in preparing for these new truck braking standards, this seminar focuses attendees on understanding medium-duty hydraulic brake systems and heavy-duty air brake systems and how both systems' performance can be predicted, maintained and optimized. The function and application of the major brake system components will be explained and attendees will discover how brakes, tires and roadways interact as a system.
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2014-12-09
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2014-12-09
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2014-12-09
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2014-12-09
Lean NOx Trap (LNT) is one of the two NOx control technologies for diesel cars. However, LNT generates high levels of H2S during its desulfation process. We have successfully developed an advanced CSF technology that can effectively control the H2S emission and at the same time maintain its oxidation function for CO/HC. We will show engine and lab data for LNT+CSF system, discuss the chemistry for H2S control and illustrate the functional principle for CSF design.
Event
2014-12-09
Recent legislation has been enacted requiring unprecedented reductions in greenhouse gas emissions, and thus improved fuel efficiency, from internal combustion engines. The aggressive rate of improvement in fuel consumption mandated by this legislation has resulted in the proposal of more exotic combustion strategies than have previously been considered for serial production. The new combustion strategies that are being considered for near term applications can result in substantially different operating environments and thus the required performance of the emission control system. To deliver the most efficient engine system for each application, the impact of the combustion strategy on emission control system requirements must be taken into account when selecting the combustion strategy for production to ensure the benefits of the combustion strategy are not offset by penalties associated with treating exhaust emissions. This discussion will present data on the impact of novel combustion strategies on the operating environment for the emissions control system.
Event
2014-12-09
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2014-12-09
The Tier-III and LEV-III fleet emission rollout is reviewed with the federal fuel economy standards. An emission rollout is generated compliant to the light duty LEV-III emission regulations to 2025. PGM loadings are estimated for the fleet based on current 4 cylinder Bin-4 and PZEV applications. Pd and Rh loadings will increase as the fleet average approaches SULEV30 in 2025. Non-traditional technologies such as HC trap and SCR catalyst may find a market.
Event
2014-12-09
The proposed legislative requirements on particle number emissions for EU6c and the reduced particle mass emission limits of CARB LEV-III / EPA Tier-3 pose a new challenge in the development of gasoline direct injection engines. Bosch is actively pursuing system level solutions, including the development of next generation DI injection systems, to aid OEMs in meeting the new legislative requirements without the need for additional exhaust gas after-treatment or penalties in fuel economy. This presentation will highlight key development areas and show system level pathways to successfully address these challenges.
Event
2014-12-09
Viewing 211 to 240 of 170105

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