A three-way catalyst system for a five-stroke engine

Noga, Marcin

doi:10.4467/2353737XCT.19.039.10213

Artykuł - szczegóły

Tytuł artykułu

A three-way catalyst system for a five-stroke engine

Autorzy

Noga Marcin

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.4467/2353737XCT.19.039.10213

Warianty tytułu

Trójfunkcyjny reaktor katalityczny dla silnika z dodatkowym rozprężaniem gazów wylotowych

Języki publikacji

Abstrakty

This paper presents the results of research on the development of an exhaust gas aftertreatment system for a turbocharged five-stroke engine. This engine was designed and constructed at Cracow University of Technology. A characteristic feature of the five-stroke engine is the use of an additional expansion process to increase overall efficiency. A challenge for a catalytic converter is the fact that it has a low exhaust gas temperature. Two three-way catalytic converters were tested – one with a ceramic support and the second with a metal support. The results of the tests showed that the reactor with a ceramic support obtains an acceptable conversion efficiency starting with an exhaust gas temperature of 280°C. For the metal-support reactor, a few percent increase in torque and a decrease in the brake-specific fuel consumption of the engine was obtained; however, the converter itself did not show signs of operation even with an exhaust gas temperature of over 380°C. The performed analyses highlighted directions of further development works in this area.

W artykule przedstawiono efekty badań nad opracowaniem układu oczyszczania spalin dla turbodoładowanego silnika pięciosuwowego, który został zaprojektowany i wykonany na Politechnice Krakowskiej. Cechą charakterystyczną silnika pięciosuwowego jest zastosowanie dodatkowego rozprężania spalin w celu zwiększenia sprawności ogólnej. Wyzwanie dla reaktora katalitycznego stanowi niska temperatura spalin. Badaniom poddano dwa reaktory trójfunkcyjne, z rdzeniem ceramicznym i z rdzeniem metalowym. Wyniki przeprowadzonych prób wskazały, że reaktor ceramiczny uzyskuje akceptowalną sprawność konwersji od temperatury spalin 280°C. Dla reaktora metalowego uzyskano kilkuprocentowy wzrost momentu obrotowego i obniżenie jednostkowego zużycia paliwa silnika, jednak sam reaktor nie wykazywał oznak działania nawet przy temperaturze spalin powyżej 380°C. Przeprowadzone analizy wskazały kierunki dalszych prac rozwojowych w przedmiotowym obszarze.

Słowa kluczowe

five-stroke engine spark ignition three-way catalyst exhaust gas aftertreatment conversion efficiency

silnik z dodatkowym rozprężaniem gazów wylotowych zapłon iskrowy trójfunkcyjny reaktor katalityczny układy oczyszczania spalin sprawność konwersji

Wydawca

Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki

Czasopismo

Technical Transactions

Rocznik

2019

Tom

Vol. 116, iss. 3

Strony

149--183

Opis fizyczny

Bibliogr. 49 poz., wykr., tab., il.

Twórcy

autor

Noga Marcin

noga@pk.edu.pl

Cracow University of Technology, Faculty of Mechanical Engineering, Institute of Automobiles and Internal Combustion Engines

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Uwagi

Section "Mechanics"

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-acec241a-41f1-4f3e-bda0-cbca6c05844c