Engines and exhaust after treatment systems for future automotive applications

Alkemade, Ulrich G.; Schümann, B.

doi:10.1016/j.ssi.2006.05.051

Cited by 115 publications

(72 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many efforts were being made in the past years to develop novel automotive exhaust gas sensors that are sensitive, selective, long-term stable, and cost effective (Riegel et al, 2002;Moos, 2005;Alkemade and Schumann, 2006;Zhuiykov and Miura, 2007;Fergus, 2007;Moos and Scho¨nauer, 2008). However, per today, only sensors based on yttria stabilized zirconia like the binary lambda probe, the wide-band lambda probe (also Universal Exhaust Gas Oxygen sensor, UEGO sensor, or linear lambda probe), and the amperometric NO x sensor have been serialized.…”

Section: Exhaust Gas Sensorsmentioning

confidence: 99%

“…Nitrogen oxide removal (NO x = NO and NO 2 ) from exhausts of leanly operated engines is not possible by TWC, since the reducing components CO, H 2 , and hydrocarbons are oxidized by O 2 instead of being used for NO x reduction (Alkemade and Schumann, 2006). To overcome this, the NSC has been originally developed for direct injection gasoline engines that are operated in the lean mode (Takeuchi and Matsumoto, 2004) and has later been applied also for Diesel exhaust gas aftertreatment (Kasˇpar et al, 2003).…”

Section: Application To No X Storage Catalystsmentioning

confidence: 99%

“…Since Diesel engines are operated leanly and Nitrogen Oxides (NO x ) cannot be removed with conventional Three-Way Catalysts, or TWC (Alkemade and Schumann, 2006;Shelef and McCabe, 2000), novel exhaust gas aftertreatment concepts have emerged.…”

Section: Introduction Technical Backgroundmentioning

confidence: 99%

See 2 more Smart Citations

Automotive Catalyst State Diagnosis Using Microwaves

Moos

Fischerauer

2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

View full text Add to dashboard Cite

-The state of catalysts plays a key role in automotive exhaust gas aftertreatment. The soot or ash loading of Diesel particulate filters, the oxygen loading degree in three-way catalysts, the amount of stored ammonia in SCR catalysts, or the NO x loading degree in NO x storage catalysts are important parameters that are today determined indirectly and in a model-based manner with gas sensors installed upstream and/or downstream of the catalysts. This contribution gives an overview on a novel approach to determine the catalyst state directly by a microwave-based technique. The method exploits the fact that the catalyst housing acts as a microwave cavity resonator. As "sensing" elements, one or two simple antennas are mounted inside the catalyst canning. The electrical properties of the catalyst device (ceramic honeycomb plus coating and storage material) can be measured. Preferably, the resonance characteristics, e.g., the resonance frequencies, of selected cavity modes are observed. The information on the catalyst interior obtained in such a contactless manner is very well correlated with the catalyst state as will be demonstrated for different exhaust gas aftertreatment systems.Re´sume´-Diagnostic de l'e´tat de catalyseurs d'automobiles a`l'aide de micro-ondes -L'e´tat des catalyseurs joue un roˆle essentiel dans le post-traitement des gaz d'e´chappement automobiles. Le chargement en suie ou en cendres des filtres Diesel a`particules, la teneur en oxyge`ne dans les catalyseurs trois voies, la quantite´d'ammoniac stocke´e dans les catalyseurs SCR ou le niveau de chargement en NO x dans les catalyseurs de stockage de NO x sont des parame`tres importants de´termine´s aujourd'hui de manie`re indirecte et sur la base de mode`les avec des capteurs de gaz se trouvant en amont et/ou en aval des catalyseurs. Cette contribution pre´sente une nouvelle approche permettant de de´terminer l'e´tat du catalyseur, directement en utilisant une technique a`micro-ondes. La me´thode exploite le fait que le boıˆtier du catalyseur agit comme cavite´re´sonnante de micro-ondes. En tant qu'e´le´ments de de´tection, une ou deux antennes simples sont installe´es a`l'inte´rieur du conditionnement du catalyseur. Les proprie´te´s e´lectriques du dispositif catalytique (nid d'abeille en ce´ramique plus reveˆtement et mate´riau de stockage) peuvent eˆtre mesure´es. De pre´fe´rence, les caracte´ristiques de re´sonnance, par exemple les fre´quences de re´sonnance, des modes de cavite´se´lectionne´s, sont observe´es. Les donne´es obtenues de cette manie`re sans contact, sont tre`s bien corre´le´es avec l'e´tat du catalyseur, tel que cela sera de´montre´pour diffe´rents syste`mes de post-traitement des gaz d'e´chappement.

show abstract

Section: Exhaust Gas Sensorsmentioning

confidence: 99%

Section: Application To No X Storage Catalystsmentioning

confidence: 99%

See 1 more Smart Citation

Automotive Catalyst State Diagnosis Using Microwaves

Moos

Fischerauer

2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

View full text Add to dashboard Cite

show abstract

“…Thus, other technologies are being developped, including the SCR with the presence of reductants in the exhaust, e.g. hydrocarbon [26], and the NOx storage and reduction (NSR) [27][28][29][30][31][32][33][34], which seems to be the most promising technology and to which is dedicated in this chapter.…”

Section: Automobile Exhaust Aftertreatmentmentioning

confidence: 99%

NOx Storage and Reduction for Diesel Engine Exhaust Aftertreatment

Pereda‐Ayo¹,

González‐Velasco²

2013

Diesel Engine - Combustion, Emissions and Condition Monitoring

View full text Add to dashboard Cite

“…Therefore, the described lambda probe has been well established for more than 40 years in serial application. On that basis, further developments for example of wide-range lambda sensors, NO x sensors (Brosha, 2002;Kato et al, 1996;Alkemade and Schumann, 2006) or NH 3 sensors (Wang et al, 2009) were possible and YSZ became the standard material in exhaust gas sensing.…”

Section: Introductionmentioning

confidence: 99%

Platform to develop exhaust gas sensors manufactured by glass-solder-supported joining of sintered yttria-stabilized zirconia

Schubert

Wollenhaupt

Kita

et al. 2016

J. Sens. Sens. Syst.

View full text Add to dashboard Cite

Abstract.A manufacturing process for a planar binary lambda sensor is shown. By joining the heating and the sensing components via glass soldering with a joining temperature of 850 • C, a laboratory platform has been established that allows the manufacturing of two independent parts in high-temperature co-fired ceramics technology (HTCC) with electrodes that are post-processed at lower temperatures, as is required for mixedpotential sensors. The final device is compared to a commercial sensor with respect to its sensing performance. Important processes and possible origins of problems as well as their solutions during sensor development are shown, including heater design and joining process.

show abstract

Engines and exhaust after treatment systems for future automotive applications

Cited by 115 publications

References 3 publications

Automotive Catalyst State Diagnosis Using Microwaves

Automotive Catalyst State Diagnosis Using Microwaves

NOx Storage and Reduction for Diesel Engine Exhaust Aftertreatment

Platform to develop exhaust gas sensors manufactured by glass-solder-supported joining of sintered yttria-stabilized zirconia

Contact Info

Product

Resources

About