Across
- 1. ___ ratio is the ratio of the cylinder volumes after and before the combustion process in the diesel cycle
- 3. Cycles where the working fluid remains a gas throughout the entire cycle.
- 5. Air-standard ___ reduce the analysis of gas power cycles to a manageable level.
- 6. The diameter of a piston
- 7. The ideal cycle which models the combustion process in both gasoline and diesel engines as a combination of 2 heat-transfer processes, one at constant volume and the other at constant pressure.
- 9. The exit through which the combustion products are expelled from the cylinder
- 10. Section added between the turbine and the nozzle of an aircraft turbine engine where additional fuel is injected into the oxygen-rich combustion gases leaving the turbine.
- 12. The distance between the top dead center and the bottom dead center and is the largest distance that a piston can travel in one direction within a cylinder.
- 14. The cycle used in aircraft gas-turbine
- 19. Engines which execute the entire cycle in just two strokes: the power stroke and the compression stroke
- 20. Audible noise occurring in the engine because of autoignition.
- 21. The ideal cycle for compress-ignition reciprocating engines. Using the air-standard assumptions, the cycle consists of 4 reversible processes: 1-2 isentropic compression, 2-3 constant P heat addition, 3-4 isentropic expansion, 4-1 constant volume heat rejection.
Down
- 1. ___ ratio is the ratio of the maximum volume formed in the cylinder to the minimum volume
- 2. An actual cycle stripped of all the internal irreversibilities and complexities.
- 4. ___ volume is the volume displaced by the piston as it moves between top dead center and bottom dead center.
- 6. Cycle used for gas turbine, which operates on an open cycle, where both the compression and expansion processes take place in rotating machinery.
- 8. A technique used to reduce the compression work for the gas turbine cycle
- 9. Heat ___ are devices designed for the purpose of converting usually heat into work
- 11. Position of the piston when it forms the largest volume in the cylinder
- 13. Combustion engines in which the piston execute 4 complete strokes within the cylinder
- 15. Engines in which the fuel is burned outside the system boundary
- 16. ___ ratio is the ratio of final to initial pressure during a compression process
- 17. The valve through which the air or air-fuel mixture is drawn into the cylinder
- 18. ___(or fan-jet) engine is the most widely used engine in aircraft propulsion