Optimal Hybridization of Conventional ICE Vehicles Academic Article

abstract

• Most commercially available hybrid electric vehicle (HEV) drivetrains are made of small internal combustion (IC) engines and large electric drives to improve fuel economy. They usually have higher cost than the conventional IC-engine-based vehicles because of the high costs of the electric drives. This paper proposes a hybridized powertrain composed of the original full-size engine of the vehicle and a universally optimum size parallel electric drive. The dynamic programming (DP) algorithm was used to obtain the sensitivity of the maximum miles per gallon (MPG) values versus the power rating of the electric drive. This sensitivity was then analyzed to determine the optimal window of the electric drive power ratings. This was proven to be universal for all passenger cars of various masses and engine powers. The fuel economy and vehicle performance of this HEV was compared with those of the 2019 Toyota Corolla, a conventional IC-engine-based vehicle, and the 2019 Toyota Prius, a commercially available HEV. The results showed that the proposed universally optimized HEV powertrain achieved better fuel economy and vehicle performance than both the original ICE and HEV vehicles, at low additional vehicle cost.

authors

• Ehsani, Mehrdad

published proceedings

• Engineering

author list (cited authors)

• Hu, Z., Mehrjardi, R. T., Lai, L., & Ehsani, M.

citation count

• 1

complete list of authors

• Hu, Zhemin||Mehrjardi, Ramin Tafazzoli||Lai, Lin||Ehsani, Mehrdad

publication date

• November 2021

publisher

• MDPI  Publisher

published in

• Engineering  Journal

keywords

• 7 Affordable And Clean Energy

Digital Object Identifier (DOI)

• 10.3390/eng2040037

start page

• 592

end page

• 607

volume

• 2

issue

• 4

URL

• http://dx.doi.org/10.3390/eng2040037

user-defined tag

• 7 Affordable and Clean Energy