What Causes Diesel Fuel to Burn Poorly?
1 Answers
Diesel fuel burns poorly due to slight deviations in spark plug ignition timing, impurities in the air filter, and other factors. Reasons related to diesel fuel: Poor diesel quality: The performance indicators of the diesel used do not meet standard requirements, leading to incomplete combustion and black smoke. Additionally, low-quality diesel can damage the diesel filter, causing the diesel inside the engine to degrade, which results in black smoke. Clogged air intake: Diesel engine fuel tanks are not sealed, and prolonged exposure to air inevitably allows impurities and dust to enter the air filter. These particles can clog the air intake, preventing sufficient air supply during diesel combustion, which easily leads to incomplete combustion and black smoke. Insufficient compression: One of the conditions for diesel combustion is a pressurized environment. However, wear on components like valves and piston rings can reduce compression pressure, failing to meet combustion requirements. This worsens combustion conditions, leading to black smoke. Solutions: Modern fuels are high-cleanliness products with various additives to aid combustion and meet emission standards. Three years ago, diesel from Shandong refineries typically had a density above 0.85g/m³, with some even reaching 0.88g/m³ or 0.89g/m³. The higher density allowed for more complete combustion of heavier components, making the diesel feel more powerful. However, with increased crude oil refining in Shandong, the root cause of high density has been addressed. Additionally, the proportion of heavy components like catalytic diesel has significantly decreased, and post-hydrotreatment diesel density has dropped considerably.
