2. A gasoline engine has a volumetric has a volumetric compression ratio of 10 and before compression has air at 290 K, 85 kPa, in the cylinder. The combustion peak pressure is 6000 kPa. Assume cold air properties. What is the highest temperature in the cycle? Find the temperature at the beginning of the exhaust (heat rejection) and the overall cycle efficiency.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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1. Cylinder conditions at the start of compression of a four-stroke cycle SIO engine are
27C and 100 kPa. The engine has a compression ratio of = 6:1, and heat addition
from combustion is qin = 2400 kJ/kg. Calculate: Temperature at each state of the cycle,
using air-standard Otto cycle analysis with constant specifics heats.
2. A gasoline engine has a volumetric has a volumetric compression ratio of 10 and
before compression has air at 290 K, 85 kPa, in the cylinder. The combustion peak
pressure is 6000 kPa. Assume cold air properties. What is the highest temperature in
the cycle? Find the temperature at the beginning of the exhaust (heat rejection) and the
overall cycle efficiency.
3. A supercharged spark-ignition engine operates on the air-standard Otto cycle. The
inlet conditions are 210kPa and 100°C and the maximum temperature and pressure are
2250°C and 7.5MPA. Determine (a) the network; (b) the cycle efficiency. (use k=1.4)
Transcribed Image Text:1. Cylinder conditions at the start of compression of a four-stroke cycle SIO engine are 27C and 100 kPa. The engine has a compression ratio of = 6:1, and heat addition from combustion is qin = 2400 kJ/kg. Calculate: Temperature at each state of the cycle, using air-standard Otto cycle analysis with constant specifics heats. 2. A gasoline engine has a volumetric has a volumetric compression ratio of 10 and before compression has air at 290 K, 85 kPa, in the cylinder. The combustion peak pressure is 6000 kPa. Assume cold air properties. What is the highest temperature in the cycle? Find the temperature at the beginning of the exhaust (heat rejection) and the overall cycle efficiency. 3. A supercharged spark-ignition engine operates on the air-standard Otto cycle. The inlet conditions are 210kPa and 100°C and the maximum temperature and pressure are 2250°C and 7.5MPA. Determine (a) the network; (b) the cycle efficiency. (use k=1.4)
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