K
Koji Yokota
Researcher at Toyota
Publications - 82
Citations - 2459
Koji Yokota is an academic researcher from Toyota. The author has contributed to research in topics: Exhaust gas & Catalysis. The author has an hindex of 20, co-authored 82 publications receiving 2426 citations. Previous affiliations of Koji Yokota include Tosoh.
Papers
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Journal ArticleDOI
The new concept 3-way catalyst for automotive lean-burn engine: NOx storage and reduction catalyst
Naoki Takahashi,Hirofumi Shinjoh,Tomoko Iijima,Tadashi Suzuki,Kiyoshi Yamazaki,Koji Yokota,Hiromasa Suzuki,Naoto Miyoshi,Shinichi Matsumoto,Tsuneyuki Tanizawa,Toshiaki Tanaka,Syu-shi Tateishi,Kouichi Kasahara +12 more
TL;DR: In this article, a 3-way catalysts for a lean-burn engine have been developed, and their NOx purification mechanisms have been studied, which consist of precious metals, aluminum oxide and some other metal compounds such as NOx, storage compounds.
Proceedings ArticleDOI
Development of New Concept Three-Way Catalyst for Automotive Lean-Burn Engines
Naoto Miyoshi,Shinichi Matsumoto,Kenji Katoh,Toshiaki Tanaka,Jun Harada,Naoki Takahashi,Koji Yokota,Masahiro Sugiura,Kouichi Kasahara +8 more
Patent
Method and apparatus for reducing nitrogen oxides from internal combustion engine
TL;DR: In this paper, an improved method and apparatus provide a catalytic system with which the nitrogen oxides in the exhaust from a lean burnt engine or a diesel engine can be effectively reduced irrespective of the concentration of oxygen gas in exhaust without impairing the good fuel economy of those engines.
Patent
NOx decreasing apparatus for an internal combustion engine
TL;DR: In this article, a lean NOx reduction catalyst capable of reducing NOx through reaction of H 2 with NOx at low temperatures below 350°C is installed in a downstream portion of an exhaust pipe of an internal combustion engine in or near a muffler.
Journal ArticleDOI
Research on new DeNOx catalysts for automotive engines
TL;DR: In this article, the performance and durability of Cu-ZSM-5 catalysts for selective reduction of NOx in an oxidizing atmosphere were studied and shown that these catalysts exhibited substantial NOx conversion performance in a leanburn engine exhaust and the simulated gas.