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Effect of cylinder deactivation strategies on engine performances using onedimensional simulation technique
Izwan Hami1, Mohd Farid Muhamad Said2, Shahril Nizam Mohamed Soid3, Henry Nasution4.
In order to meet consumer and legislation requirements, big investments on key
technology strategies have been made to ensure fuel consumption is reduced.
Recent technologies for gasoline engines are lean combustion technologies
(including direct injection and homogenous charged compression ignition),
optimizing intake and exhaust valve timing with valve lift and also cylinder
deactivation system (CDA) have been practised to improve the engine efficiency.
The purpose of this study is to investigate the engine behavior when running at
different cylinder deactivation (CDA) strategies. One-dimensional engine model
software called GT-Power is used to predict the engine performances. Five strategies
were considered namely normal mode, spark plug off mode, cylinder deactivation
mode, intake normal with exhaust off mode, and intake off with exhaust normal
mode. Engine performance outputs of each strategy are predicted and compared
at BMEP of 3 bars with engine speed of 2500 rpm. Also, the effect of CDA strategies
on in-cylinder pressure and pumping loss are performed. The study shows that all of
these cylinder deactivation strategies are capable of reducing the pumping loss
(PMEP) and fuel consumption, thus increasing the thermal efficiency of the engine.
The results suggest that the most beneficial strategy for activating CDA is for the case
whereby both the intake and exhaust valves are kept closed. This CDA mode
capable of increasing brake thermal efficiency up to 22% at entire engine speeds
operation. This strategy successfully reduced the BSFC. It was found that most of these
cylinder deactivation strategies improve the engine performance during part load
engine condition.
Affiliation:
- Universiti Teknologi Malaysia, Malaysia
- Universiti Teknologi Malaysia, Malaysia
- Universiti Kuala Lumpur Malaysian Spanish Institute, Malaysia
- Universiti Teknologi Malaysia, Malaysia
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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6 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (1.4) |
Rank |
Q3 (Engineering (all)) |
Additional Information |
SJR (0.191) |
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