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Video

Safety Element out of Context - A Practical Approach

2012-05-22
ISO 26262 is the actual standard for Functional Safety of automotive E/E (Electric/Electronic) systems. One of the challenges in the application of the standard is the distribution of safety related activities among the participants in the supply chain. In this paper, the concept of a Safety Element out of Context (SEooC) development will be analyzed showing its current problematic aspects and difficulties in implementing such an approach in a concrete typical automotive development flow with different participants (e.g. from OEM, tier 1 to semiconductor supplier) in the supply chain. The discussed aspects focus on the functional safety requirements of generic hardware and software development across the supply chain where the final integration of the developed element is not known at design time and therefore an assumption based mechanism shall be used.
Video

Comparison of Powertrain Configuration Options for Plug-in HEVs from a Fuel Economy Perspective

2012-05-25
Software products in the automotive industry are by nature widely distributed and costly to update (recall), so high reliability is clearly of utmost importance. Just as clearly, the increasing reliance on remote access to such systems, for diagnostic and other purposes, has made security an essential requirement, and traditional techniques for software development are proving to be inadequate in dealing with these issues. Correctness by Construction is a software design and development methodology that builds reliability and security into the system from the start. It can be used to demonstrate, with mathematical rigor, a program's correctness properties while reducing the time spent during testing and debugging. This paper will discuss the use of Correctness by Construction, and its accompanying SPARK language technology, to improve automotive systems' security and reliability. (The approach can also account for safely issues, although that is not the focus of this paper.)
Video

Enabling Exponential Growth of Automotive Network Devices while Reducing the Wired Communication Infrastructure with Security, Reliability, and Safety

2012-05-22
The CAN protocol has served the automotive and related industries well for over twenty-five (25) years now; with the original CAN protocol officially released in 1986 followed by the release of CAN 2.0 in 1991. Since then many variants and improvements in CAN combined with the proliferation of automotive onboard microprocessor based sensors and controllers have resulted in CAN establishing itself as the dominant network architecture for automotive onboard communication in layers one (1) and two (2). Going forward however, the almost exponential growth of automotive onboard computing and the associated devices necessary for supporting said growth will unfortunately necessitate an equivalent growth in the already crowded wired physical infrastructure unless a suitable wireless alternative can be provided. While a wireless implementation of CAN has been produced, it has never obtained real traction within the automotive world.
Video

Impact of Auxiliary Loads on Fuel Economy and Emissions in Transit Bus Applications

2012-05-25
The first commercially available plug-in hybrid electric vehicle (PHEV), the General Motors (GM) Volt, was introduced into the market in mid-December 2010. The Volt uses a series-split powertrain architecture, which provides benefits over the series architecture that typically has been considered for use in electric-range extended vehicles (EREVs). A specialized EREV powertrain, called the Voltec, drives the Volt through its entire range of speed and acceleration with battery power alone and within the limit of battery energy, thereby displacing more fuel with electricity than a PHEV, which characteristically blends electric and engine power together during driving. This paper assesses the benefits and drawbacks of these two different plug-in hybrid electric architectures (series versus series-split) by comparing component sizes, system efficiency, and fuel consumption over urban and highway drive cycles.
Video

Experimental Study into a Hybrid PCCI/CI Concept for Next-Generation Heavy-Duty Diesel Engines

2012-06-18
This paper presents the first results of an experimental study into a hybrid combustion concept for next-generation heavy-duty diesel engines. In this hybrid concept, at low load operating conditions, the engine is run in Pre-mixed Charge Compression Ignition (PCCI) mode, whereas at high load conventional CI combustion is applied. This study was done with standard diesel fuel on a flexible multi-cylinder heavy-duty test platform. This platform is based on a 12.9 liter, 390 kW heavy-duty diesel engine that is equipped with a combination of a supercharger, a two-stage turbocharging system and low-pressure and high-pressure EGR circuitry. Furthermore, Variable Valve Actuation (VVA) hardware is installed to have sufficient control authority. Dedicated pistons, injector nozzles and VVA cam were selected to enable PCCI combustion for a late DI injection strategy, free of wall-wetting problems.
Video

Modernizing the Opposed-Piston Engine for Efficient, Clean Transportation

2012-05-10
Historically, the opposed-piston, two-stroke (OP2S) diesel engine set combined records for fuel efficiency and power density that have yet to be met by any other engine type. However, with modern emissions standards, wide-spread development of this engine for on-highway use stopped. At Achates Power, state-of-the-art analytical tools and engineering methods have produced an OP2S engine that, when compared to a leading medium-duty engine, has demonstrated a 21% fuel efficiency gain and engine-out emissions levels meeting U.S. EPA10 with conventional after-treatment. Among the presentation topics covered are thermodynamic efficiency, demonstrated engine results, cost and weight advantages, and overcoming two-stroke engine challenges. Presenter David Johnson, Achates Power Inc.
Video

ThrottleCharger; Fuel Economy Improvement using Throttling Work for Electric Power Generation.

2012-05-10
Ford's EcoBoost GTDI engine technology (Gasoline Direct Injection, Turbo-charging and Downsizing) is being successfully implemented in the market place with the EcoBoost option accounting for significant volumes in vehicle lines as diverse as the F150 pickup truck, Edge CUV and the Lincoln MKS luxury sedan. A logical question would be what comes after GTDI? This presentation will review some of the technologies that will be required for further improvements in CO2, efficiency and performance building on the EcoBoost foundation as well as some of the challenges inherent in the new technologies and approaches. Presenter Eric W. Curtis, Ford Motor Co.
Video

Development of High-Efficiency Rotary Engines

2012-05-10
In this presentation, we will explain how the traditional Miller Cycle - which has its limitations in the traditional four-stroke, Otto Cycle engine provides new opportunities for greater fuel efficiency gains and engine downsizing when incorporated in a split-cycle combustion process. Results will also be shared from studies showing how these implementations can provide both significant drops in fuel consumption and increases in power when incorporated into some of today's most economic vehicles. Presenter Stephen Scuderi, Scuderi Group LLC
Video

Advanced Combustion & System Engineering - Affordable Fuel Economy?

2012-05-10
Future fuel economy targets represent a significant challenge to the automotive industry. While a range of technologies are in research and development to address this challenge, they all bring additional cost and complexity to future products. The most cost effective solutions are likely to be combinations of technologies that in isolation might have limited advantages but in a systems approach can offer complementary benefits. This presentation describes work carried out at Ricardo to explore Intelligent Electrification and the use of Stratified Charge Lean Combustion in a spark ignition engine. This includes a next generation Spray Guided Direct Injection SI engine combustion system operating robustly with highly stratified dilute mixtures and capable of close to 40% thermal efficiency with very low engine-out NOx emissions.
Video

A Pathway to Lean Engine Operation: Pre-Chamber Jet Ignition Combustion

2012-05-10
Turbulent Jet Ignition is an advanced spark initiated pre-chamber combustion system for otherwise standard spark ignition engines. Combustion in the main chamber is initiated by jets of partially combusted (reacting) pre-chamber products which provide a high energy ignition source. The resultant widely distributed ignition sites allow relatively small flame travel distances enabling short combustion durations and high burn rates. This presentation outlines development of this combustion concept in a modern normally aspirated PFI production engine. Experimental results have highlighted high thermal efficiency (42.8%), significant fuel economy improvement (>20%), low engine out NOx (<10 ppm), knock limit extension, high load capability (>13 bar IMEPn) and high speed operation (5500 rev/min). Presenter William P Attard, MAHLE Powertrain LLC
Collection

Brakes and Electronic Stability Control, 2005

2010-09-15
The 19 papers in this technical paper collection cover vehicle brake system performance, vehicle brake noise, antilock braking control of electric vehicles, enhanced traction stability control systems, and more.
Collection

Brake Technology, 2007

2010-09-23
The 14 papers in this technical paper collection cover brake subsystem performance and their impact on the overall vehicle brake system, electro-mechanical brakes and controls, and vehicle performance and NVH issues.
Collection

Latest Advances in Commercial Vehicle Chassis and Suspensions, 2010

2010-09-27
The 30 papers in this technical paper collection focus on heavy tire modeling/testing and evaluation; vehicle dynamics; wide based tires, sustainability and maintenance; air suspension, off-road chassis and suspension; hybrid drive and chassis; all wheel/multi-wheel drive vehicle dynamics and performance; testing and experimental analysis of chassis and suspension; and advanced chassis control and rollover.
Collection

Latest Advances for Commercial Vehicle Drivetrains, Powertrains, and Transmissions 2010

2010-09-27
This technical paper collection contains 53 technical papers. Topics covered include engine exhaust aftertreatment and integration; hybrid vehicle integration and optimization; powertrain and drivetrain NVH; advanced transmission and driveline component design; diesel engine system design; fuel economy; alternative fuels; and advanced engine component design.
Collection

Tire and Wheel Technology, 2011

2011-04-12
The 9 papers in this technical paper collection cover tire and wheel technologies. Topics include: the friction circle and tire characteristics; tire sensors; electromechanical energy scavenger for automotive tires; tire slippage on wheels of passenger cars; influence of tire stiffnesses on tire mounting; a dynamics wheel model for transient simulation; and more.
Collection

Steering and Suspension Technology, 2011

2011-04-12
The 6 papers in this technical paper collection cover steering and suspension technologies. Topics include: twin level steering system; ride comfort improvement; small amplitude torsional steering column dynamics; HBMC (hydraulic body motion control system) for production vehicle application; and the development of hybrid EPS.
Collection

Brake Technology, 2011

2011-04-12
The 6 papers in this technical paper collection include the following topics: high temperature brake cooling; brake rotors; development of electrically-driven intelligent brake system; ABS stopping distance; static brake testing; and more.
Collection

High Efficiency IC Engines, 2011

2011-04-12
The 10 papers in this technical paper collection discuss high efficiency IC engines. Topics include: fuel reactivity controlled compression ignition (RCCI) combustion in light- and heavy-duty engines; fuel effects on reactivity controlled compression ignition (RCCI) combustion at low load; advantages of variable compression ratio in internal combustion engines; piston and valve deactivation for improved part load performances of internal combustion engines; and more.
Collection

Brake Colloquium, 2011

2011-09-18
This technical paper collection discusses the latest scientific discovers and technological innovations in brake materials, components, systems, testing, modeling and aftermarket.
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