To conduct a laboratory test, a multicylinder spark-ignition engine is connected to a dynamometer (a device that measures the shaft power output), as shown in the sketch.

For the following control volumes, draw a sketch indicating all heat and work interactions (i.e., all values of Q̄ and W̅):

A. The control volume contains only the engine, and the control surface cuts through the hoses to and from the radiator, through the air and fuel supply lines, through the exhaust pipe, and through the shaft connecting the engine and dynamometer.

B. Same as in part A, but now the radiator is included within the control volume.

Transcribed Image Text:

Fan Radiator Air Fuel ↓↓ Engine Exhaust Dynamometer FY