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2. Exhaust heat recovery system - Wikipedia

   en.wikipedia.org/wiki/Exhaust_heat_recovery_system

   Rankine cycle systems vaporize pressurised water using a steam generator located in the exhaust pipe. As a result of the heating by exhaust gases, the fluid is turned into steam. The steam then drives the expander of the Rankine engine, either a turbine or pistons. This expander can be directly tied to the crankshaft of the thermal engine or ...

3. Expansion chamber - Wikipedia

   en.wikipedia.org/wiki/Expansion_chamber

   When the descending piston first exposes the exhaust port on the cylinder wall, the exhaust flows out powerfully due to its pressure (without assistance from the expansion chamber) so the diameter/area over the length of the first portion of the pipe is constant or near constant with a divergence of 0 to 2 degrees which preserves wave energy.

4. Tuned exhaust - Wikipedia

   en.wikipedia.org/wiki/Tuned_exhaust

   The layout of a 4-2-1 system is as follows: four pipes (primary) come off the cylinder head, and merge into two pipes (secondary), which in turn finally link up to form one collector pipe. [2] Compared with a 4-1 exhaust system, a 4-2-1 often produces more power at mid-range engine speeds (RPM), while a 4-1 exhaust produces more power at high RPM.

5. Turboexpander - Wikipedia

   en.wikipedia.org/wiki/Turboexpander

   A turboexpander, also referred to as a turbo-expander or an expansion turbine, is a centrifugal or axial-flow turbine, through which a high-pressure gas is expanded to produce work that is often used to drive a compressor or generator.

6. Expander cycle - Wikipedia

   en.wikipedia.org/wiki/Expander_cycle

   Compared with a standard expander cycle, this allows higher engine thrust at the cost of efficiency by dumping the turbine exhaust. [3] [4] The Mitsubishi LE-5A was the world's first expander bleed cycle engine to be put into operational service. [5] The Mitsubishi LE-9 is the world's first first stage expander bleed cycle engine. [6]

7. Exhaust system - Wikipedia

   en.wikipedia.org/wiki/Exhaust_system

   The end of the final length of the exhaust pipe where it vents to open air, generally the only visible part of the exhaust system part on a vehicle, often ends with a straight or angled cut but may include a decorative tip. The tip is sometimes chromed. It frequently has a larger pipe than the rest of the exhaust system.