. Can you identify the cycle (Otto, Diesel, Carnot, and so on)?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
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Chapter10: Heat Exchangers
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5. A Wankel engine (Figure 12-16) uses triangular rotors in a specially shaped combustion chamber to replace
the traditional piston and cylinder. As the rotor turns, each of its three sides goes through a four-step cycle.
During the intake
stroke, fresh air is
mixed with fuel
as it is drawn into
the engine. The
rotor then seals
off the fuel-air
mixture and com-
Figure 12-16
Problem 12-5
Intake
Compression
Power
Exhaust
mences to com-
press it. In the
power stroke, the spark plug ignites the mixture. The burning gases expand, adding momentum
to the rotor. As the rotor completes its cycle, the burned gases leave the engine through the ex-
haust port, and the cycle begins over again.
From the above description of a Wankel engine, identify the four thermodynamic processes that drive this
device. Can you identify the cycle (Otto, Diesel, Carnot, and so on)?
Transcribed Image Text:5. A Wankel engine (Figure 12-16) uses triangular rotors in a specially shaped combustion chamber to replace the traditional piston and cylinder. As the rotor turns, each of its three sides goes through a four-step cycle. During the intake stroke, fresh air is mixed with fuel as it is drawn into the engine. The rotor then seals off the fuel-air mixture and com- Figure 12-16 Problem 12-5 Intake Compression Power Exhaust mences to com- press it. In the power stroke, the spark plug ignites the mixture. The burning gases expand, adding momentum to the rotor. As the rotor completes its cycle, the burned gases leave the engine through the ex- haust port, and the cycle begins over again. From the above description of a Wankel engine, identify the four thermodynamic processes that drive this device. Can you identify the cycle (Otto, Diesel, Carnot, and so on)?
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