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  2. Tecumseh Products - Wikipedia

    en.wikipedia.org/wiki/Tecumseh_Products

    In 1956 Tecumseh entered the small engine market acquiring Lauson and in 1957, acquired the Power Products Company- maker of 2 cycle engines found in many antique chainsaws. [6] [7] In 2007, the company's former gasoline engine and power train product lines were sold to Platinum Equity LLC. In December 2008, the company closed its engine ...

  3. Pneumatic valve springs - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_valve_springs

    Racing engines often fail at high rotational speeds because mechanical springs are unable to retract the valves quickly enough to provide clearance for the piston. Renault's pneumatic valve technology replaced steel springs with light weight compressed air bellows. These could retract valves more quickly and reduce the possibility of piston ...

  4. Diving air compressor - Wikipedia

    en.wikipedia.org/wiki/Diving_air_compressor

    Filling a cylinder from the panel Low pressure breathing air compressor intended for use with airline diving equipment. High pressure diving compressors are generally three- or four-stage-reciprocating air compressors that are lubricated with a high-grade mineral or synthetic compressor oil free of toxic additives (a few use ceramic-lined cylinders with O-rings, not piston rings, requiring no ...

  5. Compressor - Wikipedia

    en.wikipedia.org/wiki/Compressor

    In the case of small reciprocating compressors, the compressor flywheel may drive a cooling fan that directs ambient air across the intercooler of a two or more stage compressor. Because rotary screw compressors can make use of cooling lubricant to reduce the temperature rise from compression, they very often exceed a 9 to 1 compression ratio.

  6. Air-start system - Wikipedia

    en.wikipedia.org/wiki/Air-start_system

    Further gears in the engine gearbox connect to the engine shaft (high pressure spool on multi-spool engines). Compressed air is sent to the ATS turbine from the aircraft auxiliary power unit ( bleed air from the gas generator or from a free-turbine load compressor, eg PW901 APU), from an already-running engine (bleed air) on a multi-engined ...

  7. Centrifugal compressor - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_compressor

    The simplest inlet to a centrifugal compressor is typically a simple pipe. Depending upon its use/application inlets can be very complex. They may include other components such as an inlet throttle valve, a shrouded port, an annular duct (see Figure 1.1), a bifurcated duct, stationary guide vanes/airfoils used to straight or swirl flow (see Figure 1.1), movable guide vanes (used to vary pre ...