Heavy-Duty Vehicle Transmission Benchmarking – Volvo I-Shift 12-Speed Automated Manual Transmission

Wileman, Craig; Southwest Research Institute

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Heavy-Duty Vehicle Transmission Benchmarking – Volvo I-Shift 12-Speed Automated Manual Transmission

2025-01-01
By Wileman, Craig

English

Details You May Also Like

Details:

Creators:

Wileman, Craig
Corporate Creators:

Southwest Research Institute
Corporate Contributors:

United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Vehicle Safety Research
Subject/TRT Terms:

[+]

AT2612F Benchmarks Heavy Duty Vehicles I-Shift Manual Transmissions Testing Torque Transmission Volvo
Publication/ Report Number:

DOT HS 813 620
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Department of Transportation. National Highway Traffic Safety Administration
Abstract:

The objective of this project was to evaluate and characterize the Volvo I-Shift 12-speed AMT (automated manual transmission) available for use in heavy-duty vehicles produced for the North American market. The evaluation of this transmission consisted of in-gear efficiency mapping, torque converter mapping, torque converter engagement strategy characterization, oil pump testing, parasitic loss determination, shift schedule identification with laden versus unladen shift algorithm mapping, characterization of ratio spread, and packaging envelope. The transmission benchmarking efforts undertaken as part of this project sought to provide NHTSA with powertrain data that improves vehicle modeling and standard writing activities. This report details the technological advancements of the I-Shift transmission and the empirical data collected as part of the project.
Format:

PDF
Funding:

NHTSA Contract No. GS07F6087P, Task Order No. 693JJ918F000246
Collection(s):

NHTSA - Vehicle Safety Research
Main Document Checksum:

[+]

urn:sha-512:3d9234cdbf759d35e0a8b557834214fd2cb3b5a9a98b68529691bba23271ba6712d6489e50bc3750d54e919447eceb7cc6bb9521d7c0d0e495bdf82e102208ee
Download URL:

https://rosap.ntl.bts.gov/view/dot/79092/dot_79092_DS1.pdf
File Type:

[PDF-1.92 MB]