Fuel Economy Improvement Using Combined CAI and Cylinder Deactivation (CDA) - An Initial Study

2005 ◽  
Author(s):  
K. J. Douglas ◽  
N. Milovanovic ◽  
James turner ◽  
D. Blundell
Keyword(s):  
Fuel Economy ◽  
Initial Study ◽  
Cylinder Deactivation ◽  
Fuel Economy Improvement

scholarly journals Estimation of Fuel Economy Improvement in Gasoline Vehicle Using Cylinder Deactivation

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3084
Author(s):  
Nankyu Lee ◽  
Jinil Park ◽  
Jonghwa Lee ◽  
Kyoungseok Park ◽  
Myoungsik Choi ◽  
...  
Keyword(s):  
Fuel Economy ◽  
Control Method ◽  
Measurement Data ◽  
Fixed Number ◽  
Test Vehicle ◽  
Cylinder Deactivation ◽  
Advantages And Disadvantages ◽  
Variable Type ◽  
Fuel Economy Improvement ◽  
Fixed Type

Cylinder deactivation is a fuel economy improvement technology that has attracted particular attention recently. The currently produced cylinder deactivation engines utilize fixed-type cylinder deactivation in which only a fixed number of cylinders are deactivated. As fixed-type cylinder deactivation has some shortcomings, variable-type cylinder deactivation with no limit on the number of deactivated cylinders is under research. For variable-type cylinder deactivation, control is more complicated and production cost is higher than fixed-type cylinder deactivation. Therefore, it is necessary to select the cylinder deactivation control method considering both advantages and disadvantages of the two control methods. In this study, a fuel economy prediction simulation model was created using the measurement data of various vehicles with engine displacements of 1.0–5.0 L. The fuel economy improvement of fixed-type cylinder deactivation was compared with that of variable-type cylinder deactivation using the created simulation. As a result of examining the fuel economy improvement of the test vehicle in the FTP-75 driving cycle, the improvement was 2.2–10.0% for fixed-type cylinder deactivation and 2.2–12.8% for variable-type cylinder deactivation. Furthermore, the effect of the engine load on fuel economy improvement under cylinder deactivation and the effect of changes in engine control were examined via a simulation.

Simulation of Fuel Economy Improvement by Using Cylinder Deactivation Control

2017 ◽  
Vol 25 (4) ◽  
pp. 467-473
Author(s):  
Kyoungseok Park ◽  
Nankyu Lee ◽  
Jinil Park ◽  
Jonghwa Lee
Keyword(s):  
Fuel Economy ◽  
Cylinder Deactivation ◽  
Fuel Economy Improvement
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