Authors

H. Yamashita, D. Shimo, T. Yamamoto, E. Nakai, M. Hitomi, Mazda Motor Corporation, Hiroshima, Japan

Year

2026

Print Info

Production/Publication ÖVK

Summary

Mazda is pursuing carbon neutrality through a multi‑solution approach combining BEVs, PHEVs, and high‑efficiency ICEs using carbon‑neutral fuels. This study evaluates the feasibility of pairing microalgae‑derived fuels with on‑board CO₂ capture to further reduce ICE emissions.
Algal fuels can lower well‑to‑wheel CO₂ emissions by ~90%, while engine exhaust—containing CO₂ concentrations far higher than ambient air—offers a low‑energy source for separation. A dual‑bed temperature swing adsorption (TSA) system using zeolite 13X was developed and tested with real engine exhaust. Phase‑change‑assisted thermal management enabled rapid adsorption–desorption cycling.
A system and its key technologies capable of achieving a CO₂ capture ratio exceeding 20% under WLTC‑equivalent conditions—while maintaining energy consumption significantly lower than that of direct air capture (DAC)—have been developed and demonstrated.

ISBN

978-3-9504969-5-6

DOI

https://doi.org/10.62626/tts9-immz Copy link

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