21-10. Piston Engines
Всего заданий: 295
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Заданий на экзамен: 30
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1. The waste gate of a turbocharged engine seizes on the climb before critical altitude, the manifold pressure would:
2. The ignition timing of a piston engine needs to be advanced:
3. The valve and ignition timings of the theoretical Otto cycle are modified in order to improve:
4. One of the advantages of a turbocharger over a supercharger is that:
5. ow when the inlet valve opens the residual heat from the slow burning mixture may be still so high that it ignites the charge in the induction manifold, producing «popping» noises. Overheating of the cylinder heads can result from using weak mixtures, because due to the slow burning of the mixture not all of the heat energy is converted into work and thus dissipates into the cylinder heads.
Note: when we refer to the mixture ratio as rich or weak, we compare the actual mixture ratio to the chemically correct ratio of 15:1. Anything lower than this is referred to as rich, anything higher than this is referred to as weak (or lean).
