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Technical Paper

Emission Reduction Potential by Means of High Boost and Injection Pressure at Low- and Mid-Load for a Common Rail Diesel Engine under High EGR Rates

2013-10-14
2013-01-2541
The emission reduction potential of high boost and high injection pressures was investigated on a 4-cylinder small bore diesel engine at high rates of exhaust gas recirculation. For this reason an external boosting system was built up, which allowed to generate the desired boost pressure independent from the engine's operating point. In order to simulate conditions comparable to a real turbocharged engine, also the influence of the turbine on the exhaust back pressure was considered. The whole measurement campaign was carried out at two load points (low- and mid-load), which represent characteristic engine operating points of the Urban Driving Cycle (UDC). On the one hand could be shown, that there is an enormous potential in the reduction of particulate matter (PM) up to 75 % and of carbon monoxide (CO) up to 15 % at the mid-load point by increasing the boost pressure.
Journal Article

A New Measurement Technique for Online Oil Dilution Measurement

2013-10-14
2013-01-2521
New trends in the development of combustion engines lead to changed engine operating conditions which also result in changed loads of the engine parts and functional components. The application of regenerative fuels and new exhaust after- treatment systems can for example lead to an increased input of fuel into the engine oil. Oil dilution is an issue that impacts the engine operation and life cycle and therefore gains importance during the development process of combustion engines. In order to improve oil dilution to preclude destructive amounts of fuel in the oil it is necessary to investigate and optimize the fuel in oil sorption and desorption processes. At the University of Applied Sciences Regensburg a new measurement technique has been developed that realizes the online analysis of the fuel quantity in the engine oil.
Magazine

Aerospace & Defense Technology: April 2016

2016-04-01
Electronic Warfare Next Generation FPGAs for Electronic Warfare Systems Materials: Composites Managing the Impact of Nanomaterials in Aerospace Manufacturing Aerospace Materials/Manufacturing Turbine Flow Meters Alternative Power Sources Designing a Power Generation System for a More-Electric Aircraft
Magazine

Aerospace Engineering & Manufacturing 2009-05-01

2009-05-01
An eye for detail Manufacturers hone next-generation designs with advanced measurement and inspection tools. Emissions progress New European research and development efforts aim to achieve step changes in engine emissions performance. Seeing virtually everything Simulating larger systems helps engineers understand more interactions.
Magazine

Aerospace & Defense Technology: December 2022

2022-12-01
Why are Aerospace & Defense Companies Embracing Additive Manufacturing? Simplifying Power Design with Modular Architectures The Role of DevSecOps in Modern Edge Systems Making Machines Curious Designing Multi-Channel Microwave Radio Systems Using Optical Interconnects Solving Military Satellite, Radar and 5G Communications Challenges with GaN-on-SiC MMIC Power Amplifiers Advanced Airborne Defensive Laser for Incorporation on Strike Fighter Aircraft A technical and operational analysis of an airborne "hard-kill" Ytterbium fiber laser-based anti-missile system for use on strike fighters. Additive Manufacturing Utilizing a Novel In-Line Mixing System for Design of Functionally Graded Ceramic Composites Exploring the development of a direct ink writing system with multimaterial and in-line mixing capabilities for printing inks composed of high solids-loaded ceramic particulate suspensions.
Magazine

Aerospace & Defense Technology: June 2021

2021-06-01
Advanced CT Inspection and Data Analysis Designing for the Connected Battlespace Engineering an Aircraft Hydrogen Powertrain Open System Software for Critical Applications Making Fully Digital Beamforming for Radar and Electronic Warfare Applications a Reality Defeating Commercial Drone Threats with Software Defined Radio Quantifying Eye Movement Trajectory Similarity for Use in Human Performance Experiments in Intelligence, Surveillance, and Reconnaissance (ISR) Research Using ScanMatch, a Matlab software package, to determine the similarity of two strings of eye tracking data provides useful background and recommendations for potential applications in Intelligence, Surveillance, and Reconnaissance (ISR) research. Stochastic Surveillance and Distributed Coordination Designing fast and unpredictable motion strategies for robotic surveillance agents in complex environments using Markov chain modeling and optimization methods.
Magazine

MOBILITY ENGINEERING: March 2017

2017-03-01
A greener future for two-wheelers New BS VI emissions standards for two-wheelers are an enviro-opportunity. Additive manufacturing How 3D printing will transform the A&D support chain. Autonomous plows ahead Agriculture, construction, mining-even marine-are advancing autonomous technology to improve the productivity and safety of vehicles on the job. Bridging the power gap with 48 volts New 48-V technologies are poised to arrive in volume to help meet CO2 regulations and satisfy the "vampire" power demands of new electrical subsystems and accessories. Advances in lightweight electronics protection Conformal coatings increase reliability of aerospace and military assemblies.
Article

Boeing reports on its environmental efforts

2019-06-05
The strategy identifies 2025 as a target year to collaborate with communities around the globe and create products focused on environmental performance, emissions and waste reduction, and lower levels of water and energy consumption at work sites.
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