| Description |
1 online resource ([56] p.) : col. ill. |
| Series |
NREL/SR ; 5400-52577 |
|
NREL/SR ; 5400-52577.
|
| System Details |
Full text available via Internet in .pdf format. Adobe Acrobat Reader required. |
| Type Of Report |
Subcontract report. |
| Note |
Title from title screen (viewed November 2, 2011). |
|
"October 2011." |
|
"Prepared under Subcontract No. NFM-0-40043-01." |
|
"July 20, 2011."--P. 1. |
| Summary |
A new Volvo Penta carbureted 4.3 GL engine underwent emissions and dynamometer durability testing from break-in to expected end of life using an accelerated ICOMIA marine emissions cycle and E15 fuel. Only ethanol content was controlled. All aging used splash-blended E15 fuel. Exhaust emissions, exhaust gas temperature, torque, power, barometric pressure, air temperature, and fuel flow were measured at five intervals using site-blended E15 aging fuel and certification fuel (E0). The durability test cycle showed no noticeable impact on mechanical durability or engine power. Emissions performance degraded beyond the certification limit for this engine family, mostly occurring by 28% of expected life. Such degradation is inconsistent with prior experience. Comparisons showed that E15 resulted in lower CO and HC, but increased NOX, as expected for non-feedback-controlled carbureted engines with increased oxygen in the fuel. Fuel consumption also increased with E15 compared with E0. Throughout testing, poor starting characteristics were exhibited on E15 fuel for hot re-start and cold-start. Cranking time to start and smooth idle was roughly doubled compared with typical E0 operation. The carburetor was factory-set for lean operation to ensure emissions compliance. Test protocols did not include carburetor adjustment to account for increased oxygen in the E15 fuel. |
| Funding |
Report and the work described herein were funded by the American Reinvestment and Recovery Act (ARRA) under stewardship of the Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Vehicle Technologies Program. |
|
DE-AC36-08GO28308 |
| Subject |
Vehicles -- Motors -- Exhaust gas -- Testing.
|
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Marine engines -- Research.
|
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Fuel switching.
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| Added Author |
Cahoon, Mel.
|
|
Kolb, Richard.
|
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National Renewable Energy Laboratory (U.S.)
|
|
Vehicle Technologies Program (U.S.)
|
| Gpo Item No. |
0430-P-05 (online) |
| Sudoc No. |
E 9.18:NREL/SR-5400-52577 |
|
