Solid injection in internal combustion engines involves the direct delivery of________________?
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Answer: A. liquid fuel only
Explanation
Solid injection in internal combustion engines involves delivering liquid fuel directly into cylinders. High-pressure fuel pumps inject liquid fuel without using compressed air assistance. Solid injection systems atomize liquid fuel solely through fine spray nozzle orifices. Diesel engines commonly use solid injection systems to supply fuel to combustion chambers. Early diesel engines used compressed air blast injection to atomize heavy liquid fuels. Modern common-rail fuel systems deliver precise amounts of liquid fuel under high pressure.
Automotive diesel engines use solid fuel injection for high thermal efficiency and power. Eliminating air compressors simplifies diesel engine design and improves mechanical reliability. Precise solid fuel injection reduces exhaust emissions in modern commercial truck engines. Liquid fuel and air describes older blast injection systems using compressed air. Solid fuel involves powdered coal engines which are not standard internal combustion designs. Solid fuel and air mixes pulverized coal with combustion air in experimental turbines.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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