| EFFECT OF ACTIVE ECO-MODE ON REDUCTION OF ON-ROAD CO2
EMISSIONS IN LIGHT-DUTY GASOLINE VEHICLE |
| Seungil Lee 1, Yongjoo Lee 1, Joohan Kim 1, Namho Kim 1, Cha-Lee Myung 1, Hoimyung Choi 2, Kyoungdoug Min 1 |
1Department of Mechanical Engineering, Seoul National University
2Department of Mechanical Engineering, Gachon University |
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| ABSTRACT |
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To suppress CO2 emissions through policies and technology development, eco-driving techniques are required
to be actively practiced as an effective method to improve fuel efficiency. Among the methods to practice eco-driving, the
active eco-mode is a function that changes the driving mode of a vehicle by the driver’s choice. This study aims to analyze the
effect of driving modes (normal-mode, eco-mode) on CO2 emissions through on-road tests under different driving conditions.
The eco-mode activation under normal temperature conditions emitted relatively less CO2 emissions than the normal-mode
driving. Under high-temperature conditions, fuel economy deteriorated since an additional load was required for heating,
ventilating, and air conditioning (HVAC) system operation. However, when using the eco-mode, the control of the HVAC
system was integrated with the effect of powertrain logic, which achieved a higher reduction rate of CO2 emissions than the
normal temperature condition. In particular, the impact of reducing fuel consumption was confirmed in the urban section with
many stops and departures, which is determined to result from a combination of gear shifting and acceleration pedal filtering
strategies. Meanwhile, the eco-mode logic has not been applied much in rural and motorway sections. |
| Key Words:
Real driving emission, Eco-driving, CO2 emissions, Fuel consumption, PEMS |
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Corresponding Author.
Kyoungdoug Min , Email. 
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