INVESTIGATION OF ENGINE RESTART STABILITY AFTER IDLE STOP FOR A MILD TYPE HEV POWERTRAIN

YU, S. E.; OHN, H. S.; MIN, K. D.

doi:2013.14.5.683

International Journal of Automotive Technology > Volume 14(5); 2013 > Article

Engine, Emission Technology

International Journal of Automotive Technology 2013;14(5): 683-692.
doi: https://doi.org/10.1007/s12239-013-0074-3

INVESTIGATION OF ENGINE RESTART STABILITY AFTER IDLE STOP FOR A MILD TYPE HEV POWERTRAIN

S. E. YU¹, H. S. OHN², K. D. MIN¹

¹Seoul National University
²HYUNDAI MOTOR COMANY

ABSTRACT

Stringent regulations on exhaust emissions and fuel economy for vehicles have become major issues in the automotive industry. Hybrid electric vehicles (HEV) are one of the crucial alternative plans to current conventional vehicles, but they have drawbacks, which include increases in total hydrocarbon (THC) emission from the engine and deterioration of the combustion stability with frequent stopping and restarting of the engine. Intake port fuel film is evaporated up during the deceleration state due to the fuel-cut. The

Key Words: Mild gasoline hybrid powertrain, FFID (Fast Flame Ionization Detector), Fuel film, Idle stop and go, Injection quantity, THC (Total Hydrocarbon)