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) In an unused area of the test facility, lie two internal combustion engines that were brought in for assessment several years ago. Using what little information has been found, determine the relative efficiency of each. Take y for air as 1.4 for both.

) In an unused area of the test facility, lie two internal combustion engines that were brought in for assessment several years ago. Using what little information has been found, determine the relative efficiency of each. Take y for air as 1.4 for both.

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Hello, so i have attached two images. the first image is the quetions, i need part b) answered if possible. i have attached my findings to part a) to add to the little information we know to help with part b if needed. Thnks

a) The company has two diesel-powered standby generators, both of which are capable of supplying sufficient electrical power in the event of a failure. Both diesel engines have the same details on their name plates (given below), but one operates on the four- stroke cycle, whilst the other operates on a two-stroke cycle. As all the other information has been lost, you have been asked to determine the brake power, indicated power, and thus confirm the mechanical efficiency of each engine. Explain why these efficiency values may be different for each engine. Mean effective 550 KN/m² pressure Swept volume of 14 litres cylinder Speed of engine 150 revs/min Brake torque 2000 Nm Number of cylinders | 8 b) In an unused area of the test facility, lie two internal combustion engines that were brought in for assessment several years ago. Using what little information has been found, determine the relative efficiency of each. Take y for air as 1.4 for both.
Transcribed Image Text:a) The company has two diesel-powered standby generators, both of which are capable of supplying sufficient electrical power in the event of a failure. Both diesel engines have the same details on their name plates (given below), but one operates on the four- stroke cycle, whilst the other operates on a two-stroke cycle. As all the other information has been lost, you have been asked to determine the brake power, indicated power, and thus confirm the mechanical efficiency of each engine. Explain why these efficiency values may be different for each engine. Mean effective 550 KN/m² pressure Swept volume of 14 litres cylinder Speed of engine 150 revs/min Brake torque 2000 Nm Number of cylinders | 8 b) In an unused area of the test facility, lie two internal combustion engines that were brought in for assessment several years ago. Using what little information has been found, determine the relative efficiency of each. Take y for air as 1.4 for both.
1. Brake Power 2. Indicated Power 3. Mechanical Efficiency 2-stroke engine (10π) KW 154 kW 20.4% 4-stroke engine (10) KW 77 kW 40.8%
Transcribed Image Text:1. Brake Power 2. Indicated Power 3. Mechanical Efficiency 2-stroke engine (10π) KW 154 kW 20.4% 4-stroke engine (10) KW 77 kW 40.8%
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The p-v diagram all make sense, but the equations are unreadable. i dont understand where some units have come from etc, could you please further explain the equations. thnks, feel free to take the relevant amount of credits

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