Route-Based Energy Analysis of Hybrid Rail Consists

Nitisha Ahuja; Jay D. Martin; Michael A. Yukish; Gary M. Stump; Lorri A. Bennett; Bryan W. Schlake; Joel R. Anstrom; Christopher D. Rahn

doi:10.1115/1.4064091

Route-Based Energy Analysis of Hybrid Rail Consists

Nitisha Ahuja, Jay D. Martin, Michael A. Yukish, Gary M. Stump, Lorri A. Bennett, Bryan W. Schlake, Joel R. Anstrom, Christopher D. Rahn

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Adding battery locomotives to traditional diesel locomotives to form a hybrid consist has the potential to reduce fuel consumption and emissions in freight rail operations. This paper provides route-based estimates of diesel (hp_d/ton) and battery (hp_b/ton) power requirements and diesel (gal/ton) and battery (hp_bhr/ton) energy requirements for hybrid consists. Given a route-specific power profile, the power split between the battery pack and the diesel engine is optimized to minimize fuel consumption by running the diesel engine at maximum efficiency during the entire route. Simulations for 200-mile round trips between Chicago and Harrisburg show that the diesel power is maximum in low-gradient regions at 1.05 (hp_d/ton) and battery power is maximum in hilly regions at 2 (hp_b/ton) for discharge and 6.5 (hp_b/ton) for charge. Maximum fuel efficiency gains of approximately 60%are seen in the mountains, where 2.09 (hp_bhr/ton) of battery energy is needed. Minimum fuel economy gains are observed in flat regions, with 20% fuel consumption reduction. With battery current and voltage limits, the battery pack size increases, and fuel savings decrease.

Original language	English (US)
Article number	011103
Journal	Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Volume	146
Issue number	1
DOIs	https://doi.org/10.1115/1.4064091
State	Published - Jan 1 2024

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Information Systems
Instrumentation
Mechanical Engineering
Computer Science Applications

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10.1115/1.4064091

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title = "Route-Based Energy Analysis of Hybrid Rail Consists",

abstract = "Adding battery locomotives to traditional diesel locomotives to form a hybrid consist has the potential to reduce fuel consumption and emissions in freight rail operations. This paper provides route-based estimates of diesel (hpd/ton) and battery (hpb/ton) power requirements and diesel (gal/ton) and battery (hpbhr/ton) energy requirements for hybrid consists. Given a route-specific power profile, the power split between the battery pack and the diesel engine is optimized to minimize fuel consumption by running the diesel engine at maximum efficiency during the entire route. Simulations for 200-mile round trips between Chicago and Harrisburg show that the diesel power is maximum in low-gradient regions at 1.05 (hpd/ton) and battery power is maximum in hilly regions at 2 (hpb/ton) for discharge and 6.5 (hpb/ton) for charge. Maximum fuel efficiency gains of approximately 60%are seen in the mountains, where 2.09 (hpbhr/ton) of battery energy is needed. Minimum fuel economy gains are observed in flat regions, with 20% fuel consumption reduction. With battery current and voltage limits, the battery pack size increases, and fuel savings decrease.",

author = "Nitisha Ahuja and Martin, {Jay D.} and Yukish, {Michael A.} and Stump, {Gary M.} and Bennett, {Lorri A.} and Schlake, {Bryan W.} and Anstrom, {Joel R.} and Rahn, {Christopher D.}",

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AU - Anstrom, Joel R.

AU - Rahn, Christopher D.

PY - 2024/1/1

Y1 - 2024/1/1

N2 - Adding battery locomotives to traditional diesel locomotives to form a hybrid consist has the potential to reduce fuel consumption and emissions in freight rail operations. This paper provides route-based estimates of diesel (hpd/ton) and battery (hpb/ton) power requirements and diesel (gal/ton) and battery (hpbhr/ton) energy requirements for hybrid consists. Given a route-specific power profile, the power split between the battery pack and the diesel engine is optimized to minimize fuel consumption by running the diesel engine at maximum efficiency during the entire route. Simulations for 200-mile round trips between Chicago and Harrisburg show that the diesel power is maximum in low-gradient regions at 1.05 (hpd/ton) and battery power is maximum in hilly regions at 2 (hpb/ton) for discharge and 6.5 (hpb/ton) for charge. Maximum fuel efficiency gains of approximately 60%are seen in the mountains, where 2.09 (hpbhr/ton) of battery energy is needed. Minimum fuel economy gains are observed in flat regions, with 20% fuel consumption reduction. With battery current and voltage limits, the battery pack size increases, and fuel savings decrease.

AB - Adding battery locomotives to traditional diesel locomotives to form a hybrid consist has the potential to reduce fuel consumption and emissions in freight rail operations. This paper provides route-based estimates of diesel (hpd/ton) and battery (hpb/ton) power requirements and diesel (gal/ton) and battery (hpbhr/ton) energy requirements for hybrid consists. Given a route-specific power profile, the power split between the battery pack and the diesel engine is optimized to minimize fuel consumption by running the diesel engine at maximum efficiency during the entire route. Simulations for 200-mile round trips between Chicago and Harrisburg show that the diesel power is maximum in low-gradient regions at 1.05 (hpd/ton) and battery power is maximum in hilly regions at 2 (hpb/ton) for discharge and 6.5 (hpb/ton) for charge. Maximum fuel efficiency gains of approximately 60%are seen in the mountains, where 2.09 (hpbhr/ton) of battery energy is needed. Minimum fuel economy gains are observed in flat regions, with 20% fuel consumption reduction. With battery current and voltage limits, the battery pack size increases, and fuel savings decrease.

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Route-Based Energy Analysis of Hybrid Rail Consists

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