نتایج جستجو برای: automobile engine

تعداد نتایج: 80648  

Journal: :Environmental science & technology 2005
Sebastien Rauch Harold F Hemond Bernhard Peucker-Ehrenbrink Kristine H Ek Gregory M Morrison

Platinum, Pd, Rh, and Os were found to occur at elevated concentrations in airborne particles (PM10) collected at urban sites in Boston, MA. Average Pt, Pd, Rh, and Os concentrations were 6.9 +/- 1.9, 8.1 +/- 1.8, 1.50 +/- 0.50, and 0.068 (-0.068 + 0.070) pg m(-3), respectively. Elevated Pt, Pd, and Rh concentrations are attributed to automobile catalysts, which use Pt, Pd, and Rh for the remov...

2015
Chao-Wu Chou Wen-Chih Liao Simon Wu

The impact of global warming and climate change is one of the most critical challenges of the 21st century. The greenhouse effect caused by technological development and industrial pollution has accelerated the speed of global warming. The continuous improvement in automobile energy consumption is one of the most effective ways to reduce global warming. A comparative analysis is proposed to exa...

1998
G. J. Hoolboom B. Szabados

The advantages/disadvantages of energy storage devices, which can provide nonpolluting automobile systems are discussed. Four types of storage devices are identified: electro-chemical (batteries) hydrogen electro-mechanical (flywheels) Molten salt heat storage A high speed flywheel with a small permanent magnet motor/generator has more advantages than any of the other systems and might become a...

2009
Petr Ježdík Jiří Novák

− The paper describes an unusual approach to diagnose standard ignition subsystem of fuel engines. All the information about real state conditions of the ignition coils and sparks is taken from simple measurement of power consumption transient of the electric control systems of engine. The transient is processed by continuous wavelet transformation (CWT). Result of the CWT is used for a classif...

1999
K. H. Kim Juqiang Liu Masaki Ishida Inho Kim

The TMO (Time-triggered Message-Triggered Object) structuring scheme is aimed at facilitating realtime (RT) distributed software engineering in a form which software engineers in the vast business software field can adapt to with small efforts. It is a syntactically simple and natural but semantically powerful extension of the conventional object structuring approaches. In the course of develop...

Journal: :Waste management 2008
S Murugan M C Ramaswamy G Nagarajan

Tests have been carried out to evaluate the performance, emission, and combustion characteristics of a single cylinder direct injection diesel engine fueled with 10%, 30%, and 50% of tyre pyrolysis oil (TPO) blended with diesel fuel (DF). The TPO was derived from waste automobile tyres through vacuum pyrolysis. The combustion parameters such as heat release rate, cylinder peak pressure, and max...

2016
Yoshiharu Soeta Seiji Nakagawa Yohei Kamiya Masaru Kamiya

The sound quality inside a car is a very important aspect of automobile design. Many different sources produce sounds that can be heard inside a car. Previous studies have investigated the sound quality of the sources, such as those produced by the engine [1,2], door closing [3,4], and power windows [5,6]. Recent developments in vehicle design have led to a reduction in various sound levels, pr...

2011
Evgeny Knutov Paul De Bra David Smits Mykola Pechenizkiy

Adaptive Hypermedia Systems (AHS) have long been concentrating on adaptive guidance of links between domain concepts. In this paper we first study parallels between navigation and linking in hypertext on the one hand and information searching or querying on the other hand. We show that to a large extent linking and searching can be modeled in the same way. Secondly we present a transition towar...

Journal: :Small 2022

Foam Thermoelectric Generators An elastic and durable thermoelectric generator using carbon nanotubes/polydimethylsiloxane foam shows stable power generation in the real stress environment of an automobile engine, where compressive vibrational stresses occur continuously irregularly. The proposed approach by Song Yun Cho, Bumjoon J. Kim, co-workers (article number 2106108) will significantly co...

Journal: :Tetsu To Hagane-journal of The Iron and Steel Institute of Japan 2023

Ferritic stainless steels are used for automobile exhaust parts because of their high heat and corrosion resistance. Among them, located upstream near the engine, so-called hot-end parts, example, manifolds, required to show excellent Since thermal fatigue is induced by repeating heating cooling with mechanical strain restriction, resistance one most important properties exhaust-parts materials.

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