Optimal Usage of Engine Torque for a Disconnect Device in Situations Where Battery Power is Constrained Stellantis

Format:

Book

Conference/Event

Author/Creator:

Sha, Hangxing, author.

Contributor:

Banuso, Abdulquadri

Khanal, Shishir

Madireddy, Krishna Chaitanya

Patel, Nadirsh

Rock, Joe

Conference Name:

WCX SAE World Congress Experience (2025-04-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

This paper introduces a novel approach to optimize battery power usage and optimal engine torque for Axle disconnect device engagement under power constrained scenarios for range extended hybrid vehicles. Range extended hybrid architecture provides benefits of BEV architecture and relief the range anxiety that BEV drivers often have. The Axle disconnect device helps improve the efficiency of the battery power usage when it is disconnected and provides better drivability and performance to fulfill driver demand when it is connected [1]. Under power constraint scenario, the disconnect device engagement could take too long or eventually fail to engage and result in degradation for drivability and vehicle level performance. This novel approach is utilizing the engine to either generate more power to spin up the disconnect motor faster under discharge limited case or generate less power to allow the disconnect motor to spin down under charge limited case. The effectiveness of this approach is demonstrated through vehicle results by reducing the spin up time from longer than 2sec to 0.73sec and spin down time from longer than 3sec to 0.2sec under battery power constraint scenarios

Notes:

Vendor supplied data

Publisher Number:

2025-01-8578

Access Restriction:

Restricted for use by site license