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Viewing 1 to 30 of 13036
2017-09-04
Technical Paper
2017-24-0044
Jeremy Rochussen, Jeff Son, Jeff Yeo, Mahdiar Khosravi, Patrick Kirchen, Gordon McTaggart-Cowan
Alternative fuel injection systems and advanced in-cylinder diagnostics are two important tools for engine development; however, the rapid and simultaneous achievement of these goals is often limited by the space available in the cylinder head. Here, a research-oriented cylinder head is developed for use on a single cylinder 2-litre engine, and permits three simultaneous in-cylinder combustion diagnostic tools (cylinder pressure measurement, infrared (IR) absorption, and multi-color pyrometry). In addition, a modular injector mounting system enables the use of a variety of direct fuel injectors for both gaseous and liquid fuels. The design of the all-new cylinder head was derived from a production cylinder head, which was sectioned and laser scanned to create a parametric model.
2017-09-04
Technical Paper
2017-24-0174
Laura Tribioli, Paolo Iora, Raffaello Cozzolino, Daniele Chiappini
Road transportation is proved to be one of the main contributor to pollutant and global greenhouse gas emissions. This, together with the rising of fuel price, is striving the automotive sector research towards innovative solutions. Promising solutions fuel cell vehicles, which generally make use of polymer electrolyte membrane fuel cells with the possibility of further reducing pollutant emissions, giving a satisfactory range without the need of an internal combustion engine. Nonetheless, even being a relatively mature technology, there are still some disadvantages related to the use of fuel cells for vehicles, such as high costs, low power density, and lack of hydrogen infrastructures. The latter issue could be solved by using an on-board fuel processor for hydrogen production.
2017-09-04
Technical Paper
2017-24-0159
Davide Di Battista, Marco Di Bartolomeo, Carlo Villante, Roberto Cipollone
Internal combustion engines is actually one of the most important source of pollutants and greenhouse gases emissions. In particular, on-the-road transportation sector has taken this environmental challenge and worldwide governments set up regulations in order to limit the emissions and fuel consumption from vehicles. Among the several technologies under development, an ORC unit bottomed exhaust gas seems to be very promising, but it still has several complications when it is applied on board of a vehicle (weight, encumbrances, backpressure effect on the engine, safety, reliability). In this paper, a comprehensive mathematical model of an ORC unit bottomed a heavy duty engine, used for commercial vehicle, has been developed. The model is completed with the sizing of the two exchangers involved in the ORC plant: the heat recovery vapor generator (HRVG) and the condenser.
2017-09-04
Technical Paper
2017-24-0152
Mirko Baratta, Daniela Misul, Jiajie Xu, Alois Fuerhapter, Rene Heindl, Cesare Peletto, Jean Preuhs, Patrick Salemi
The present paper is the outcome of the research activity carried out by Centro Ricerche Fiat, Politecnico di Torino, Delphi and AVL within the Gason research project of the EC (H2020 program). The overall goal of the research project is to develop CNG-only SI engines which are able to comply with post-EuroVI emission regulations and 2020+ CO2 emission targets, with reference to the new homologation cycle and real driving conditions. The work presented in this paper aimed at developing a small displacement turbocharged engine, which combines the advanced VVA MultiAir system for the air metering with the direct injection of natural gas. The activity focused on the development and fluid-dynamic characterization of the gaseous-fuel injector. Moreover, the combined use of CFD analysis and optical-access PLIF experimental techniques allowed the design of the combustion chamber to be optimized from the mixture formation point of view.
2017-09-04
Technical Paper
2017-24-0151
Matteo De Cesare, Nicolo Cavina, Luigi Paiano
New gasoline engine design is highly influenced by CO2 and emission limits defined by legislations, the demand for real-conditions fuel economy, higher torque, higher specific power and lower costs. Downsizing concepts, including turbocharging in combination with direct injection, have contributed significantly to the recent improvement of gasoline engines. However, other technologies are under evaluation to allow further steps of enhancement for the even more challenging requirements. The main issues of gasoline engines in terms of efficiency and performance are knocking, part-load losses, and thermal stress at high power conditions. This work presents a comparison at concept level between the main technologies that are currently being developed, considering not only the technical benefits, but also their cost-effectiveness.
2017-09-04
Technical Paper
2017-24-0147
Marco Chiodi, Andreas Kaechele, Michael Bargende, Donatus Wichelhaus, Christian Poetsch
In the competition for the powertrain of the future the internal combustion engine faces tough challenges. Reduced environmental impact, higher mileage, low cost and new technologies are required to maintain its global position in public and private mobility. For decades researchers have been investigating the Homogeneous Charge Compression Ignition (HCCI) promising higher efficiency due to the rapid combustion and therefore low exhaust gas temperatures. Consequently there is no need for a rich mixture to cool the turbocharger under high load. As the combustion does not have a distinguished flame front it is able to burn very lean mixtures, reducing HC and CO emissions. However, until recently, HCCI was considered to be only applicable as a part load process. The 3D engine development tool QuickSim which has been developed at the FKFS in Stuttgart is able to simulate the entire flow path of the engine, including conventional and HCCI combustion.
2017-09-04
Technical Paper
2017-24-0135
Shuxia Miao, Lin Luo, Yan Liu, Zhangsong Zhan
New emissions regulations of light-duty vehicles (China 6) will be implemented in China from July 1, 2020. This standard includes two stages, China 6a and China 6b, in which the PM limits of 4.5 mg/km and 3.0 mg/km are introduced respectively, the PN limit is set to be 6×10e11 #/km for both stages. The WLTC testing cycle will be implemented in China 6 regulation as well. In this study a light-duty vehicle satisfying China 6(b) emission standards was developed by improving the engine raw emissions, optimizing the calibration and adding a coated GPF to the after-treatment system. The impacts of ash content and consumption of engine oil and the fast ash accumulation to vehicle emissions and backpressure were analyzed through dynamometer testing. The vehicle after-treatment system was then designed and developed to meet China 6(b) emission standards. The characteristics of soot accumulated through mimicking routine driving under cold environments were tested.
2017-09-04
Technical Paper
2017-24-0120
Matthew Keenan
It appears that the earliest public domain reference regarding automotive catalysis was from January 1959 and written by GM and presented at the annual SAE meeting in Detroit. The publication related hydrocarbon control of a gasoline vehicle using an oxidation catalyst. The results showed 85 – 100% hydrocarbon reduction over the temperature range 600 – 750oC, under different vehicle operating conditions from idle to accelerations. The catalyst contained no precious metals but the full chemical composition was not disclosed. However, interestingly air was required to be pumped into the exhaust as the application didn’t always operate under stoichiometric conditions, but operated periodically under rich conditions. Hence oxygen was required to oxidise the gasoline derived hydrocarbons.
2017-07-10
Technical Paper
2017-28-1930
Anil Kumar Jaswal, Pradeep Chandrasekaran, Surendran Ramadoss
Abstract Indian Automobile Industry has started using Six Sigma for Vehicle Design and process improvement to compete with Global competition. This Paper describes how the Tools of Six Sigma shall be used as an Effective Tool for both redefining the Design and the Process Improvement. This Paper talks on the evolution of DMADV approach in Indian Automobile Industry compared to the related Trends in Other Manufacturing Sectors. The Author describes how the warranty failures in Commercial Segment Vehicle Category which was the selling talk for the Competition was addressed in Leading Indian Automobile OEM. As this Failure was adversely impacting customer satisfaction and no solution seemed forthcoming, top Management indicated to use a radically different approach to solve the problem within a years’ time.
2017-07-10
Technical Paper
2017-28-1933
Alberto Boretti
Abstract The paper captures the recent events in relation with the Volkswagen (VW) Emissions Scandal and addresses the impact of this event on the future of power train development. The paper analyses the impact on the perspectives of the internal combustion engine, the battery based electric car and the hydrogen based technology. The operation of the United States Environmental Protection Agency (EPA), VW and the United States prosecutor, sparked by the action of the International Council on Clean Transportation (ICCT) is forcing the Original Equipment Manufacturers (OEM) towards everything but rationale immediate transition to the battery based electric mobility. This transition voids the value of any improvement of the internal combustion engine (ICE), especially in the lean burn, compression ignition (CI) technology, and of a better hybridization of powertrains, both options that have much better short term perspectives than the battery based electric car.
2017-07-10
Technical Paper
2017-28-1959
Abhishek Taluja, Simson T. Wilson, Santosh Lalasure, K. Rajakumar
The Ride Comfort has always been an important attribute of a vehicle that gets trade-off with handling characteristics of a vehicle. However, to cater the growing customer requirements for better ride comfort in a vehicle without compromising on other attributes, evaluating and achieving optimal ride comfort has become a significant process in the vehicle development. In the current engineering capability and virtual engineering simulations, creating an accurate and real time model to predict ride comfort of a vehicle is a challenging task. The qualitative evaluation of ride attributes has always been the proven conventional method to finalize the requirements of a vehicle. However, quantitative evaluation of vehicle ride characteristics benefits in terms of target setting during vehicle development process and in robust validation of the final intended product against its specifications.
2017-06-27
WIP Standard
J646
Figures 1 to 5 illustrate in simplified form some of the more common planetary gear arrangements in order to establish applicable terminology. Gear ratio is the numerical ratio of input to output speed.
CURRENT
2017-06-27
Standard
AIR6027A
The information presented in this AIR is intended to provide designers of armed unmanned systems with guidelines that may be applied to ensure safe integration and operation of weapons on unmanned platforms. The guidelines have been developed from experiences gained in the design and operation of weapons on manned aircraft that have been accepted by relevant safety authorities in the USA and Europe and proven effective over many years. Whilst the guidelines have been developed from experience with aircraft operations, the concepts are considered equally applicable to non-aircraft systems, such as those used on the surface or undersea environments.
CURRENT
2017-06-27
Standard
AS4270A
This document establishes techniques for validating that a mission store complies with the interface requirements delineated in MIL-STD-1760.
CURRENT
2017-06-27
Standard
AS4764A
This document establishes techniques for validating that an aircraft station complies with the interface requirements delineated in MIL-STD-1760.
2017-06-27
WIP Standard
J139
To provide standard terminology and definitions with regard to ignition systems for spark-ignited internal combustion engines.
CURRENT
2017-06-21
Standard
ARP9009A
This SAE Aerospace Recommended Practice (ARP) specifies for quality requirements that are additive to a procurement document or contract, where an organization: a. needs to provide additional guidance for suppliers and other organizations in the delivery of products, goods and services in accordance with stated quality demands, and b. needs to provide information in addition or in absence of existing quality system requirements to provide the assurance of conformity to customer and applicable regulatory requirements. NOTE: In this ARP, the term ‘product’ applies only to the product intended for, or required by, a customer.
CURRENT
2017-06-20
Standard
AIR4844C
The following terminology has been generated by the ATA/IATA/SAE Commercial Aircraft Composite Repair Committee (CACRC) and provides terminology for design, fabrication, and repair of composite and bonded metal structures. The purpose of this AIR is to provide terminology that should be used when developing CACRC repair documents or repair documents produced by airlines or airframe and engine manufacturers. It is intended to develop this AIR into an AS.
CURRENT
2017-06-19
Standard
AS7202A
This document has been declared "CANCELLED" as of June 2017 and has been superseded by PRI AC7202. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index noting that it is superseded by PRI AC7202. Cancelled specifications are available from SAE.
CURRENT
2017-06-19
Standard
AS7201A
This document has been declared "CANCELLED" as of June 2017. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index. Cancelled specifications are available from SAE.
CURRENT
2017-06-19
Standard
AS7200/1B
This document has been declared "CANCELLED" as of June 2017 and has been superseded by PRI AC7200/1. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index noting that it is superseded by PRI AC7200/1. Cancelled specifications are available from SAE.
CURRENT
2017-06-19
Standard
AS7115A
This document has been declared "CANCELLED" as of June 2017 and has been superseded by PRI AC7115. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index noting that it is superseded by PRI AC7115. Cancelled specifications are available from SAE.
CURRENT
2017-06-19
Standard
AS7112/2A
This document has been declared "CANCELLED" as of June 2017 and has been superseded by PRI AC7112/2. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index noting that it is superseded by PRI AC7112/2. Cancelled specifications are available from SAE.
CURRENT
2017-06-19
Standard
AS7112/4A
This document has been declared "CANCELLED" as of June 2017 and has been superseded by PRI AC7112/4. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index noting that it is superseded by PRI AC7112/4. Cancelled specifications are available from SAE.
2017-06-15
WIP Standard
AIR5919B
This SAE Aerospace Information Report (AIR) is intended to document and provide access to information obtained by an industry survey. It summarizes and documents data regarding possible alternatives to the use of cadmium plating on general connectors and connector accessories typically used in aerospace and military defense electrical interconnect systems.
2017-06-13
WIP Standard
AS6171/22
To define capabilities and limitations of SEM-EDS as it pertains to counterfeit detection of EEE parts and suggest possible applications to these ends. Additionally, this document outlines requirements associated with the application of SEM-EDS including: Operator training; Sample preparation; Data interpretation; Equipment maintenance; and Reporting of data. If SAE AS6171/22 is invoked in the contract, the base document, AS6171 General Requirements shall also apply.
CURRENT
2017-06-12
Standard
AS7001A
This document has been declared "CANCELLED" as of June 2017. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index. Cancelled specifications are available from SAE.
CURRENT
2017-06-12
Standard
AS7002A
This document has been declared "CANCELLED" as of June 2017. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index. Cancelled specifications are available from SAE.
CURRENT
2017-06-12
Standard
AS7106/2B
This document has been declared "CANCELLED" as of June 2017. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index. Cancelled specifications are available from SAE.
CURRENT
2017-06-12
Standard
AS7106/3A
This document has been declared "CANCELLED" as of June 2017. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index. Cancelled specifications are available from SAE.
Viewing 1 to 30 of 13036

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