REDUCING EXHAUST EMISSIONS IN ETHANOL-FUELED ENGINES DURING COLD START
This work describes the improvements on exhaust emissions and cold start obtained through utilization of a new type of cold-start auxiliary system for ethanol-fueled engines. Lower amounts of the gasoline used to help cold start and of ethanol injected during cold start and warm-up were used via introduction of a fuel injector in the new cold-start auxiliary system. The redesigned system allowed for faster and uniform cold start, in comparison to the conventional system, of around 31.1%. Reductions of raw hydrocarbon and carbon monoxide emissions in the cold stage of the FTP-75-based emissions test cycle were about 8.6 and 17.2%, respectively, while oxides of nitrogen and aldehyde emissions remained unchanged.
Keywords: aldehyde emissions; cold start; ethanol fuel; internal combustion engine
Document Type: Research Article
Affiliations: 1: F.A. Powertrain Ltd., Engine Engineering Division, Betim, Brazil 2: Pontifical Catholic University of Minas Gerais, Department of Mechanical Engineering, Belo Horizonte, Brazil
Publication date: 01 August 2003
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content