- Tytuł:
- Investigating the Effects of Variable Valve Timing on Spark Ignition Engine Performance
- Autorzy:
-
Bapiri, Sepehr
Sorusbay, Cem - Powiązania:
- https://bibliotekanauki.pl/articles/103037.pdf
- Data publikacji:
- 2019
- Wydawca:
- Stowarzyszenie Inżynierów i Techników Mechaników Polskich
- Tematy:
-
spark ignition engine
variable valve timing
turbocharger
AVL BOOST
engine performance
fuel consumption
silnik o zapłonie iskrowym
zmienny rozrząd zaworów
turbosprężarka
wydajność silnika
zużycie paliwa - Opis:
- In this study, a prototype four-stroke spark ignition engine with four cylinders (two valves per cylinder), with and without turbocharger, as well as variable valve timing system to adjustment of variable valve duration has been investigated. This study covers the effects of intake valve opening (IVO), Intake valve closing (IVC), exhaust valve opening (EVO) and exhaust valve closing (EVC) angles on engine performances and fuel economy. The calculations of engine performance were carried out using the 1-Dimensional simulation with AVL BOOST software. The effects of different valve timing strategies and a combination of them from simulations were analyzed and compared with the reference fixed valve timing cases. It was shown that substantial improvements in fuel consumption and performance can be achieved. The improvements of Indicated Specific Fuel Consumption (ISFC) are remarkable in turbocharged models. Furthermore, we can see the noticeable improvements in torque and power in the naturally aspirated engine.
- Źródło:
-
Advances in Science and Technology. Research Journal; 2019, 13, 2; 100-111
2299-8624 - Pojawia się w:
- Advances in Science and Technology. Research Journal
- Dostawca treści:
- Biblioteka Nauki
Artykuł