We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Impact of Engine Inertia on P2 Mild HEV Fuel Consumption.
- Authors
Yakhshilikova, Gulnora; Ruzimov, Sanjarbek; Tonoli, Andrea; Mukhitdinov, Akmal
- Abstract
The energy management system (EMS) of a hybrid electric vehicle (HEV) is an algorithm that determines the power split between the electrical and thermal paths. It defines the operating state of the power sources, i.e., the electric motor (EM) and the internal combustion engine (ICE). It is therefore one of the main factors that can significantly influence the fuel consumption and performance of hybrid vehicles. In the transmission path, the power generated by the ICE is in part employed to accelerate the rotating components of the powertrain, such as the crankshaft, flywheel, gears, and shafts. The main inertial components are the crankshaft and the flywheel. This additional power is significant during high-intensity acceleration. Therefore, the actual engine operation is different from that required by the power split unit. This study focuses on exploring the influence of engine inertia on HEV fuel consumption by developing a controller based on an equivalent consumption minimisation strategy (ECMS) that considers crankshaft and flywheel inertia. The optimal solution obtained by the ECMS controller is refined by incorporating the inertia effect of the main rotating components of the engine into the cost function. This reduces the engine operation during high inertial torque transient phases, resulting in a decrease in vehicle CO2 emissions by 2.34, 2.22, and 1.13 g/km for the UDDS, US06, and WLTC driving cycles, respectively.
- Subjects
ENERGY consumption; INTERNAL combustion engines; COST functions; ENERGY management; FLYWHEELS; ENGINES; DRIVE shafts; HYBRID electric vehicles
- Publication
World Electric Vehicle Journal, 2024, Vol 15, Issue 5, p220
- ISSN
2032-6653
- Publication type
Article
- DOI
10.3390/wevj15050220