Exploration of flame characteristics of gasoline engine fuelled by gasoline-pentanol blends using combustion endoscopy
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View abstract on PubMed
Summary
This summary is machine-generated.Higher-order alcohols like pentanol improve spark-ignition engine performance when blended with gasoline. Adding pentanol increases flame speed, enhancing combustion efficiency and reducing harmful emissions like CO and HC.
Area Of Science
- Combustion science
- Alternative fuels
- Internal combustion engines
Background
- Spark-ignition (SI) engines require enhanced fuel efficiency and reduced emissions.
- Higher-order alcohols like pentanol are under-researched as gasoline alternatives.
- Previous studies suggest pentanol-gasoline blends improve SI engine performance and emissions.
Purpose Of The Study
- To analyze the flame characteristics (speed and distribution) of pentanol-gasoline blends in an SI engine.
- To evaluate the impact of varying pentanol concentrations on in-cylinder combustion.
- To correlate flame behavior with engine performance and emissions.
Main Methods
- Pentanol was blended with gasoline at 10%, 20%, and 30% by volume.
- Blends were tested in a twin-cylinder gasoline engine with a Multi-Point Fuel Injection (MPFI) system.
- In-cylinder combustion was visualized using an AVL Visio scope camera to capture flame images.
Main Results
- Pentanol addition increased flame speed and combustion rate.
- Flame intensity and distribution area expanded with higher pentanol content.
- Engine performance improved, with a 5.71% higher Brake Thermal Efficiency (BTE) for the 30% pentanol blend at full load.
- Carbon Monoxide (CO) and Hydrocarbon (HC) emissions decreased, while Nitrogen Oxide (NO) emissions increased.
Conclusions
- Pentanol-gasoline blends up to 30% show promise for SI engines.
- Increased pentanol content enhances combustion, engine efficiency, and reduces specific emissions.
- Pentanol is a viable gasoline additive without requiring engine modifications.
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