Results 271 to 280 of about 19,399 (314)

Differences in Efficiency between SI Engine and Diesel Engine

MTZ worldwide, 2009
For discussing the differences in efficiency between a SI engine and a diesel engine in the vehicle a detailed split of loss calculation is used normally as method. The comparison of engine concepts at identical operating points gives only limited information.
Raffael Kuberczyk, Hans-Jürgen Berner, Michael Bargende   +2 more
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3500 SI Engine Application Flexibility

Journal of Engineering for Gas Turbines and Power, 1991
The 3500 Spark-Ignited Engine is a 170 mm bore by 190 mm stroke family including 8, 12, and 16-cylinder models rated at 54 bkW per cylinder. Initial production included low-emission versions of the 12 and 16 cylinder engines in 1986. This paper describes basic combustion and attachment developments that have broadened the product offering for improved ...
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New Engine Simulation Structure Model Applied to SI Engine

The Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse), 2017
High ratio emissions that outcome from incomplete combustion cause air contamination, poorer the performance of the spark ignition (SI) engine and raise fuel consumption. Uncompleted combustion emitted a high ratio of CO, HC, NOx and PM harmful emissions such as come into atmosphere.
Mohammad Javad Nekooei, Jaswar Koto
openaire   +1 more source

Measurement and analysis of engine starts in SI engines

MTZ worldwide, 2006
Just like the scientist uses his microscope to study tiny pathogens as the cause of major epidemics, engineers developing vehicle engines have to study a growing number of engine process details. Although modern engine management systems are capable of storing ever more complex models for engine control, checking and coordinating these models is ...
Olaf Kannapin, Jürgen Schröder, Peter Strauß   +2 more
openaire   +1 more source

SI Engine Modeling Using Neural Networks

SAE Technical Paper Series, 1998
<div class="htmlview paragraph">SI engines are dynamic systems with highly nonlinear characteristics which are controlled by ECUs performing complex control algorithms. Hardware-in-the-Loop (HIL) simulation is an important tool to support test and verification during the development phase.
M. Ayeb, D. Lichtenthäler, T. Winsel, H. J. Theuerkauf   +3 more
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Defect engineering of Si nanocrystal interfaces

physica status solidi (a), 2012
AbstractThe photoluminescence of Si nanocrystals is often assigned to exciton recombination confined within the nanocrystals. However, localized radiative or non‐radiative defects at the nanocrystal (NC) interface can drastically influence the NCs ensemble and reduce the luminescence output.
Zacharias, Margit, Hiller, Daniel, Hartel, Andreas Markus, Gutsch, Sebastian   +3 more
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Fuel-injection control of SI engines

Proceedings of 1994 33rd IEEE Conference on Decision and Control, 2002
It is known that about 50% of air pollutants comes from automotive engine exhaust, and mostly in a transient state operation. However, the wide operating range, the inherent nonlinearities of the induction process and the large modeling uncertainties make the design of the fuel-injection controller very difficult. Also, the unavoidable large time-delay
null Sei-Bum Choi, null Mooncheol Won, J.K. Hedrick   +2 more
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Strain Engineering for Si CMOS Technology

ECS Meeting Abstracts, 2006
Abstract not Available.
Devendra Sadana, Stephen Bedell, Alexander Reznicek, Joel de Souza, Huajie Chen, Fogel Keith   +5 more
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Modeling SI-engines for Hybrid Vehicles

SAE Technical Paper Series, 2001
<div class="htmlview paragraph">One of the most attractive features of hybrid vehicles powered by SI-engines with three way catalysts is the potential of reaching extremely low emissions. In conventional drive trains, limitations in the air/fuel control result in lambda excursions during transients.
Petter Strandh, Rolf Egnell
openaire   +1 more source

Civil Engineering Calculations Using SI Units

Engineering Issues: Journal of Professional Activities, 1976
The change from customary U.S. to the SI units of measurement will be more than a simple matter of converting numbers. It will require rethinking of computation approaches as the new system is absolute rather than gravitationally based. Mass, weight and force are not interchageable. Weight, which is a force unit, is a newton, not a kilogram.
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