NOx Trap Catalyst Technologies and Exhaust Emission Control to Expand Lean Burn Operation for Gasoline Engine Application
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概要
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Studies were conducted on catalyst and emission control technologies with the aim of extending lean operation of gasoline direct injection engines for better fuel economy. A 99.5 % NOx purification efficiency was obtained with a potassium-based NOx-trap catalyst by enhancement of gas diffusivity in the washcoat and also sulfur purge capability. Combined with HC reduction technologies such as a larger valve-overlapping during cold start catalyst warm-up and HC slip prevention control during NOx purge operation, a vehicle with this catalyst meets the Japanese SULEV regulation.
- 公益社団法人 自動車技術会の論文
公益社団法人 自動車技術会 | 論文
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