May 2018
Intermediate to advanced
1160 pages
30h 12m
English
Content preview from Thermal Engineering
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Chapter 11
Performance of Internal Combustion Engines
11.1 ❐ PERFORMANCE PARAMETERS
The performance of an engine is an indication of the degree of success with which the conversion of chemical energy contained in the fuel is done into useful mechanical work. The degree of success is compared on the basis of following parameters:
- Specific fuel consumption (SFC)
- Brake mean effective pressure (BMEP)
- Specific power output (SP)
- Specific weight (SW)
- Exhaust smoke and other emissions
However, in the evaluation of engine performance, the following performance parameters are chosen:
- Power and mechanical efficiency
- Mean effective pressure and torque
- Specific output
- Fuel-air ratio
- Volumetric efficiency
- Specific fuel consumption
- Thermal efficiency ...
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