The performance and emissions characteristics of diesel/biodiesel/alcohol blends in a diesel engine
| Autor: | Quanchang Zhang, Qixin Ma, Chao Yang, Jichao Liang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Diesel engine
Thermal efficiency 020209 energy 02 engineering and technology Combustion Cylinder (engine) law.invention chemistry.chemical_compound Diesel fuel 020401 chemical engineering law 0202 electrical engineering electronic engineering information engineering Ternary blends 0204 chemical engineering Biodiesel Ethanol COV Pulp and paper industry TK1-9971 General Energy chemistry Volume (thermodynamics) Alcohols Environmental science Electrical engineering. Electronics. Nuclear engineering Combustion and emissions |
| Zdroj: | Energy Reports, Vol 7, Iss, Pp 1016-1024 (2021) |
| ISSN: | 2352-4847 |
| Popis: | Biodiesel has great potential as an alternative fuel for diesel engines. However, poor low-temperature flow property and high viscosity of biodiesel limit its use in engines. Therefore, alcohol comes into researchers’ eyes as a promising additive for diesel–biodiesel (DB) blends. In this study, the effects of lower and higher alcohol contents with different speeds on combustion and emissions characteristics were investigated in a modified single cylinder diesel engine. The results indicated that the maximum pressure rise rate (MPRR) maintained a consistent drop ratio as speed increased from 1500 rpm to 1800 rpm for the tested fuels. However, B10E10 (10% biodiesel and %10 ethanol by volume) had a big drop, which meant that engine’s power ability had a big loss at high speed. The declining rate with speed decreased for indicated thermal efficiency (ITE) when adding alcohol to diesel–biodiesel blends, especially n-pentanol. Moreover, compared with other tested fuels, B10P10 (10% biodiesel and 10% n-pentanol) had smaller cycle variation and more stable combustion state as speed changed, despite it had the highest coefficient of variation (COV) at 1000 rpm. It can be found that has advantages in combustion stability, and can well reduce the total hydrocarbon (THC) and carbon monoxide (CO) emissions under the condition of medium speed commonly used by vehicle. Overall consideration, using diesel/biodiesel/alcohol ternary fuels may be a better choice for diesel engines. |
| Databáze: | OpenAIRE |
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