![Department of Energy (DOE) Logo](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEii0hqSsNQ9ciqa5Jbd1KnK5a3iAymzUMj_BaaoEkPGqbNw2qtnpbLCRpSEslLeAK69DfPOCKdFuGIlYeDEgtbmR1qHFF3Tj_uR-7Adjhd5Yt-EKvonU5aLtgyF8jP8em0Cm-EOpO7gwQc/s320/doe.jpg)
Vehicle results include the following when E15 and E20 were compared with traditional gasoline:
- Tailpipe emissions were similar;
- Under normal operations, catalyst temperatures in the 13 cars were largely unchanged;
- When tested under full-throttle conditions, about half of the cars exhibited slightly increased catalyst temperatures with E15 and E20, compared to traditional gasoline; and,
- Based on informal observations during testing, drivability was unchanged.
- As ethanol content increased:
- Regulated emissions remained largely unchanged,
- Engine and exhaust temperatures increased;
- Regulated emissions remained largely unchanged,
- Engine performance was inconsistent, even with traditional gasoline;
- Commercial engines, as well as more sophisticated residential engines, exhibited no particular sensitivity to ethanol from a durability perspective; and,
- The effect of E15 and E20 on the durability of smaller, less expensive residential engines (e.g., line trimmers) was not clear given that a number of these engines failed regardless of fuel type.
No comments:
Post a Comment